djmil/corda-checkers
djmil/corda-checkers
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Major refactoring

Browse Source 
- abstract GameState as a base class for
  + GameProposale
  + GameBoard
  + GameResult

- GameView persepective approach
  as result significant downplay of DTO classes

- single GameCommand
- single transaction Commit flow with dedicated responder
- extensive use of orchestartion code flow pattern
This commit is contained in:
djmil 2023-09-21 16:21:58 +02:00
parent dc702f7584
commit 959ea0051d
61 changed files with 1767 additions and 1857 deletions
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242
backend/src/main/java/djmil/cordacheckers/cordaclient/CordaClient.java
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@ -14,31 +14,21 @@ import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Service; import org.springframework.stereotype.Service;
import org.springframework.web.client.RestTemplate; import org.springframework.web.client.RestTemplate;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.databind.ObjectMapper;
import djmil.cordacheckers.cordaclient.dao.GameState;
import djmil.cordacheckers.cordaclient.dao.HoldingIdentity; import djmil.cordacheckers.cordaclient.dao.HoldingIdentity;
import djmil.cordacheckers.cordaclient.dao.Piece; import djmil.cordacheckers.cordaclient.dao.Piece;
import djmil.cordacheckers.cordaclient.dao.GameBoard;
import djmil.cordacheckers.cordaclient.dao.GameBoardCommand;
import djmil.cordacheckers.cordaclient.dao.GameProposal;
import djmil.cordacheckers.cordaclient.dao.GameResult;
import djmil.cordacheckers.cordaclient.dao.VirtualNode; import djmil.cordacheckers.cordaclient.dao.VirtualNode;
import djmil.cordacheckers.cordaclient.dao.VirtualNodeList; import djmil.cordacheckers.cordaclient.dao.VirtualNodeList;
import djmil.cordacheckers.cordaclient.dao.flow.RequestBody; import djmil.cordacheckers.cordaclient.dao.flow.RequestBody;
import djmil.cordacheckers.cordaclient.dao.flow.ResponseBody; import djmil.cordacheckers.cordaclient.dao.flow.ResponseBody;
import djmil.cordacheckers.cordaclient.dao.flow.arguments.GameProposalCreateReq; import djmil.cordacheckers.cordaclient.dao.flow.arguments.Req;
import djmil.cordacheckers.cordaclient.dao.flow.arguments.GameProposalCreateRes; import djmil.cordacheckers.cordaclient.dao.flow.arguments.Rsp;
import djmil.cordacheckers.cordaclient.dao.flow.arguments.GameProposalListRes; import djmil.cordacheckers.cordaclient.dao.flow.arguments.ReqGameBoardMove;
import djmil.cordacheckers.cordaclient.dao.flow.arguments.Empty; import djmil.cordacheckers.cordaclient.dao.flow.arguments.ReqGameProposalCreate;
import djmil.cordacheckers.cordaclient.dao.flow.arguments.GameBoardCommandReq; import djmil.cordacheckers.cordaclient.dao.flow.arguments.RspGameState;
import djmil.cordacheckers.cordaclient.dao.flow.arguments.GameBoardResGameResult; import djmil.cordacheckers.cordaclient.dao.flow.arguments.RspGameStateList;
import djmil.cordacheckers.cordaclient.dao.flow.arguments.GameBoardListRes;
import djmil.cordacheckers.cordaclient.dao.flow.arguments.GameBoardResGameBoard;
import djmil.cordacheckers.cordaclient.dao.flow.arguments.GameProposalCommandAcceptRes;
import djmil.cordacheckers.cordaclient.dao.flow.arguments.GameProposalCommandReq;
import djmil.cordacheckers.cordaclient.dao.flow.arguments.GameProposalCommandRes;
@Service @Service
public class CordaClient { public class CordaClient {
@ -69,205 +59,110 @@ public class CordaClient {
} }
/** /**
* Obtain list of unconsumed (active) GameProposals * @param holdingIdentity
* @param myHoldingIdentity * @return list of unconsumed (active) GameStateViews
* @return GameProposals list in JSON form
*/ */
public List<GameProposal> gameProposalList(HoldingIdentity myHoldingIdentity) { public List<GameState> gameStateList(HoldingIdentity holdingIdentity) {
final RequestBody requestBody = new RequestBody( final RequestBody requestBody = new RequestBody(
"gp.list-" + UUID.randomUUID(), "gs.list-" + UUID.randomUUID(),
"djmil.cordacheckers.gameproposal.ListFlow", "djmil.cordacheckers.gamestate.ListFlow",
new Empty() new Req());
);
final GameProposalListRes listFlowResult = cordaFlowExecute( return cordaFlowExecute(holdingIdentity, requestBody, RspGameStateList.class)
myHoldingIdentity, .getResponce(requestBody);
requestBody,
GameProposalListRes.class
);
if (listFlowResult.failureStatus() != null) {
System.out.println("GameProposalCreateFlow failed: " + listFlowResult.failureStatus());
throw new RuntimeException("GameProsal: CreateFlow execution has failed");
}
return listFlowResult.successStatus();
} }
public UUID gameProposalCreate( public GameState gameStateGet(HoldingIdentity holdingIdentity, UUID gameStateUuid) {
final RequestBody requestBody = new RequestBody(
"gs.get-" + UUID.randomUUID(),
"djmil.cordacheckers.gamestate.GetFlow",
gameStateUuid);
return cordaFlowExecute(holdingIdentity, requestBody, RspGameState.class)
.getResponce(requestBody);
}
public GameState gameProposalCreate(
HoldingIdentity issuer, HoldingIdentity issuer,
HoldingIdentity acquier, HoldingIdentity acquier,
Piece.Color acquierColor, Piece.Color acquierColor,
String message String message
) throws JsonMappingException, JsonProcessingException { ) {
final RequestBody requestBody = new RequestBody( final RequestBody requestBody = new RequestBody(
"gp.create-" + UUID.randomUUID(), "gp.create-" + UUID.randomUUID(),
"djmil.cordacheckers.gameproposal.CreateFlow", "djmil.cordacheckers.gameproposal.CreateFlow",
new GameProposalCreateReq( new ReqGameProposalCreate(
acquier.x500Name(), acquier.x500Name(),
acquierColor, acquierColor,
message message));
)
);
final GameProposalCreateRes createResult = cordaFlowExecute( return cordaFlowExecute(issuer, requestBody,RspGameState.class)
issuer, .getResponce(requestBody);
requestBody,
GameProposalCreateRes.class
);
if (createResult.failureStatus() != null) {
System.out.println("GameProposal.CreateFlow failed: " + createResult.failureStatus());
throw new RuntimeException("GameProsal: CreateFlow execution has failed");
}
return createResult.successStatus();
} }
public String gameProposalReject( public GameState gameProposalReject(HoldingIdentity holdingIdentity, UUID gameProposalUuid) {
HoldingIdentity myHoldingIdentity,
UUID gameProposalUuid
) {
final RequestBody requestBody = new RequestBody( final RequestBody requestBody = new RequestBody(
"gp.reject-" +UUID.randomUUID(), "gp.reject-" +UUID.randomUUID(),
"djmil.cordacheckers.gameproposal.CommandFlow", "djmil.cordacheckers.gameproposal.RejectFlow",
new GameProposalCommandReq( gameProposalUuid);
gameProposalUuid.toString(),
GameProposalCommandReq.Command.REJECT
)
);
final GameProposalCommandRes actionResult = cordaFlowExecute( return cordaFlowExecute(holdingIdentity, requestBody, RspGameState.class)
myHoldingIdentity, .getResponce(requestBody);
requestBody,
GameProposalCommandRes.class
);
if (actionResult.failureStatus() != null) {
System.out.println("GameProposal.CommandFlow failed: " + actionResult.failureStatus());
throw new RuntimeException("GameProsal: CommandFlow execution has failed");
}
return actionResult.successStatus();
} }
public GameBoard gameProposalAccept( public GameState gameProposalCancel(HoldingIdentity holdingIdentity, UUID gameProposalUuid) {
HoldingIdentity myHoldingIdentity, final RequestBody requestBody = new RequestBody(
UUID gameProposalUuid "gp.reject-" +UUID.randomUUID(),
) { "djmil.cordacheckers.gameproposal.CancelFlow",
gameProposalUuid);
return cordaFlowExecute(holdingIdentity, requestBody, RspGameState.class)
.getResponce(requestBody);
}
public GameState gameProposalAccept(HoldingIdentity holdingIdentity, UUID gameProposalUuid) {
final RequestBody requestBody = new RequestBody( final RequestBody requestBody = new RequestBody(
"gp.accept-" +UUID.randomUUID(), "gp.accept-" +UUID.randomUUID(),
"djmil.cordacheckers.gameproposal.CommandFlow", "djmil.cordacheckers.gameproposal.AcceptFlow",
new GameProposalCommandReq( gameProposalUuid);
gameProposalUuid.toString(),
GameProposalCommandReq.Command.ACCEPT
)
);
final GameProposalCommandAcceptRes actionResult = cordaFlowExecute( return cordaFlowExecute(holdingIdentity, requestBody, RspGameState.class)
myHoldingIdentity, .getResponce(requestBody);
requestBody,
GameProposalCommandAcceptRes.class
);
if (actionResult.failureStatus() != null) {
System.out.println("GameProposal.CommandFlow failed: " + actionResult.failureStatus());
throw new RuntimeException("GameProsal: CommandFlow execution has failed");
}
return actionResult.successStatus();
} }
public List<GameBoard> gameBoardList(HoldingIdentity holdingIdentity) { public GameState gameBoardSurrender(HoldingIdentity holdingIdentity, UUID gameBoardUuid) {
final RequestBody requestBody = new RequestBody(
"gb.list-" + UUID.randomUUID(),
"djmil.cordacheckers.gameboard.ListFlow",
new Empty()
);
final GameBoardListRes listFlowResult = cordaFlowExecute(
holdingIdentity,
requestBody,
GameBoardListRes.class
);
if (listFlowResult.failureStatus() != null) {
System.out.println("GameBoard.ListFlow failed: " + listFlowResult.failureStatus());
throw new RuntimeException("GameBoard: ListFlow execution has failed");
}
return listFlowResult.successStatus();
}
public GameResult gameBoardSurrender(
HoldingIdentity myHoldingIdentity,
UUID gameBoardUuid
) {
final RequestBody requestBody = new RequestBody( final RequestBody requestBody = new RequestBody(
"gb.surrender-" +UUID.randomUUID(), "gb.surrender-" +UUID.randomUUID(),
"djmil.cordacheckers.gameboard.CommandFlow", "djmil.cordacheckers.gameboard.SurrenderFlow",
new GameBoardCommandReq( gameBoardUuid);
gameBoardUuid,
new GameBoardCommand(GameBoardCommand.Type.SURRENDER)
)
);
final GameBoardResGameResult moveResult = cordaFlowExecute( return cordaFlowExecute(holdingIdentity, requestBody, RspGameState.class)
myHoldingIdentity, .getResponce(requestBody);
requestBody,
GameBoardResGameResult.class
);
if (moveResult.failureStatus() != null) {
System.out.println("GameBoard.CommandFlow failed: " + moveResult.failureStatus());
throw new RuntimeException("GameBoard: CommandFlow execution has failed");
}
return moveResult.successStatus();
} }
public GameBoard gameBoardMove( public GameState gameBoardMove(HoldingIdentity holdingIdentity, UUID gameBoardUuid, List<Integer> move) {
HoldingIdentity myHoldingIdentity,
UUID gameBoardUuid,
List<Integer> move
) {
final RequestBody requestBody = new RequestBody( final RequestBody requestBody = new RequestBody(
"gb.move-" +UUID.randomUUID(), "gb.move-" +UUID.randomUUID(),
"djmil.cordacheckers.gameboard.CommandFlow", "djmil.cordacheckers.gameboard.CommandFlow",
new GameBoardCommandReq( new ReqGameBoardMove(
gameBoardUuid, gameBoardUuid,
new GameBoardCommand(move)) move));
);
final GameBoardResGameBoard moveResult = cordaFlowExecute( return cordaFlowExecute(holdingIdentity, requestBody, RspGameState.class)
myHoldingIdentity, .getResponce(requestBody);
requestBody,
GameBoardResGameBoard.class
);
if (moveResult.failureStatus() != null) {
System.out.println("GameBoard.CommandFlow failed: " + moveResult.failureStatus());
throw new RuntimeException("GameBoard: CommandFlow execution has failed");
}
return moveResult.successStatus();
} }
private <T> T cordaFlowExecute(HoldingIdentity holdingIdentity, RequestBody requestBody, Class<T> flowResultType) { private <T extends Rsp<?>> T cordaFlowExecute(HoldingIdentity holdingIdentity, RequestBody requestBody, Class<T> flowReponceType) {
try { try {
final String requestBodyJson = this.jsonMapper.writeValueAsString(requestBody); final String requestBodyJson = this.jsonMapper
.writeValueAsString(requestBody);
final ResponseBody startedFlow = cordaFlowPost( final ResponseBody startedFlow = cordaFlowPost(holdingIdentity, requestBodyJson);
holdingIdentity,
requestBodyJson
);
final String flowResult = cordaFlowPoll(startedFlow); final String flowResponce = cordaFlowPoll(startedFlow);
return this.jsonMapper.readValue(flowResult, flowResultType); return this.jsonMapper
.readValue(flowResponce, flowReponceType);
} }
catch (Exception e) { catch (Exception e) {
throw new RuntimeException("Unable to perform "+requestBody.flowClassName() throw new RuntimeException("Unable to perform "+requestBody.flowClassName()
@ -335,7 +230,6 @@ public class CordaClient {
} }
if (responseBody.isFlowCompleted() && responseBody.flowResult() != null) { if (responseBody.isFlowCompleted() && responseBody.flowResult() != null) {
System.out.println("resp: "+ responseBody.flowResult());
return responseBody.flowResult(); return responseBody.flowResult();
} }
} }

21
backend/src/main/java/djmil/cordacheckers/cordaclient/dao/GameBoard.java
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@ -1,21 +0,0 @@
package djmil.cordacheckers.cordaclient.dao;
import java.util.Map;
import java.util.UUID;
import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
@JsonDeserialize
public record GameBoard(
String opponentName,
Piece.Color opponentColor,
Boolean opponentMove,
Integer moveNumber,
Map<Integer, Piece> board,
GameBoardCommand previousCommand,
String message,
UUID gameUuid)
implements GameState {
}

46
backend/src/main/java/djmil/cordacheckers/cordaclient/dao/GameBoardCommand.java
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@ -1,46 +0,0 @@
package djmil.cordacheckers.cordaclient.dao;
import java.util.List;
public class GameBoardCommand {
public static enum Type {
MOVE,
SURRENDER,
VICTORY;
}
private final Type type;
private final List<Integer> move; // [0] from, [1] to
public GameBoardCommand() {
this.type = null;
this.move = null;
}
public GameBoardCommand(Type type) {
this.type = type;
this.move = null;
}
public GameBoardCommand(List<Integer> move) {
this.type = Type.MOVE;
this.move = move;
}
public Type getType() {
return type;
}
public List<Integer> getMove() {
return move;
}
@Override
public String toString() {
if (type == Type.MOVE)
return move.get(0) +"->" +move.get(1);
else
return type.name();
}
}

17
backend/src/main/java/djmil/cordacheckers/cordaclient/dao/GameProposal.java
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@ -1,17 +0,0 @@
package djmil.cordacheckers.cordaclient.dao;
import java.util.UUID;
import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
@JsonDeserialize
public record GameProposal(
String issuer,
String acquier,
Piece.Color acquierColor,
String message,
UUID gameUuid)
implements GameState {
}

16
backend/src/main/java/djmil/cordacheckers/cordaclient/dao/GameResult.java
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@ -1,16 +0,0 @@
package djmil.cordacheckers.cordaclient.dao;
import java.util.UUID;
import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
@JsonDeserialize
public record GameResult(
String whitePlayerName,
String blackPlayerName,
Piece.Color victoryColor,
UUID gameUuid)
implements GameState {
}

27
backend/src/main/java/djmil/cordacheckers/cordaclient/dao/GameState.java
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@ -1,7 +1,30 @@
package djmil.cordacheckers.cordaclient.dao; package djmil.cordacheckers.cordaclient.dao;
import java.util.List;
import java.util.Map;
import java.util.UUID; import java.util.UUID;
public interface GameState { public record GameState(
public UUID gameUuid(); Status status,
String opponentName,
Piece.Color opponentColor,
Map<Integer, Piece> board,
Integer moveNumber,
List<Integer> previousMove,
String message,
UUID uuid
) {
public static enum Status {
GAME_PROPOSAL_WAIT_FOR_OPPONENT,
GAME_PROPOSAL_WAIT_FOR_YOU,
GAME_PROPOSAL_REJECTED,
GAME_PROPOSAL_CANCELED,
GAME_BOARD_WAIT_FOR_OPPONENT,
GAME_BOARD_WAIT_FOR_YOU,
GAME_RESULT_YOU_WON,
GAME_RESULT_YOU_LOOSE;
}
} }

8
backend/src/main/java/djmil/cordacheckers/cordaclient/dao/Piece.java
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@ -4,12 +4,16 @@ public class Piece {
public enum Type { public enum Type {
MAN, MAN,
KING, KING;
} }
public enum Color { public enum Color {
WHITE, WHITE,
BLACK, BLACK;
public Color opposite() {
return this == WHITE ? BLACK : WHITE;
}
} }
Color color; Color color;

8
backend/src/main/java/djmil/cordacheckers/cordaclient/dao/flow/arguments/GameBoardCommandReq.java
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@ -1,8 +0,0 @@
package djmil.cordacheckers.cordaclient.dao.flow.arguments;
import java.util.UUID;
import djmil.cordacheckers.cordaclient.dao.GameBoardCommand;
public record GameBoardCommandReq(UUID gameBoardUuid, GameBoardCommand command) {
}

12
backend/src/main/java/djmil/cordacheckers/cordaclient/dao/flow/arguments/GameBoardListRes.java
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@ -1,12 +0,0 @@
package djmil.cordacheckers.cordaclient.dao.flow.arguments;
import java.util.List;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import djmil.cordacheckers.cordaclient.dao.GameBoard;
@JsonIgnoreProperties(ignoreUnknown = true)
public record GameBoardListRes(List<GameBoard> successStatus, String failureStatus) {
}

7
backend/src/main/java/djmil/cordacheckers/cordaclient/dao/flow/arguments/GameBoardResGameBoard.java
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@ -1,7 +0,0 @@
package djmil.cordacheckers.cordaclient.dao.flow.arguments;
import djmil.cordacheckers.cordaclient.dao.GameBoard;
public record GameBoardResGameBoard(GameBoard successStatus, String failureStatus) {
}

7
backend/src/main/java/djmil/cordacheckers/cordaclient/dao/flow/arguments/GameBoardResGameResult.java
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@ -1,7 +0,0 @@
package djmil.cordacheckers.cordaclient.dao.flow.arguments;
import djmil.cordacheckers.cordaclient.dao.GameResult;
public record GameBoardResGameResult(GameResult successStatus, String failureStatus) {
}

7
backend/src/main/java/djmil/cordacheckers/cordaclient/dao/flow/arguments/GameProposalCommandAcceptRes.java
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@ -1,7 +0,0 @@
package djmil.cordacheckers.cordaclient.dao.flow.arguments;
import djmil.cordacheckers.cordaclient.dao.GameBoard;
public record GameProposalCommandAcceptRes(GameBoard successStatus, String transactionId, String failureStatus) {
}

9
backend/src/main/java/djmil/cordacheckers/cordaclient/dao/flow/arguments/GameProposalCommandReq.java
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@ -1,9 +0,0 @@
package djmil.cordacheckers.cordaclient.dao.flow.arguments;
public record GameProposalCommandReq(String gameProposalUuid, Command command) {
public enum Command {
ACCEPT,
REJECT,
CANCEL
}
}

5
backend/src/main/java/djmil/cordacheckers/cordaclient/dao/flow/arguments/GameProposalCommandRes.java
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@ -1,5 +0,0 @@
package djmil.cordacheckers.cordaclient.dao.flow.arguments;
public record GameProposalCommandRes(String successStatus, String transactionId, String failureStatus) {
}

10
backend/src/main/java/djmil/cordacheckers/cordaclient/dao/flow/arguments/GameProposalCreateRes.java
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@ -1,10 +0,0 @@
package djmil.cordacheckers.cordaclient.dao.flow.arguments;
import java.util.UUID;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
@JsonIgnoreProperties(ignoreUnknown = true)
public record GameProposalCreateRes(UUID successStatus, String failureStatus) {
}

12
backend/src/main/java/djmil/cordacheckers/cordaclient/dao/flow/arguments/GameProposalListRes.java
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@ -1,12 +0,0 @@
package djmil.cordacheckers.cordaclient.dao.flow.arguments;
import java.util.List;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import djmil.cordacheckers.cordaclient.dao.GameProposal;
@JsonIgnoreProperties(ignoreUnknown = true)
public record GameProposalListRes(List<GameProposal> successStatus, String failureStatus) {
}

5
backend/src/main/java/djmil/cordacheckers/cordaclient/dao/flow/arguments/Empty.java → backend/src/main/java/djmil/cordacheckers/cordaclient/dao/flow/arguments/Req.java
View File

@ -3,6 +3,9 @@ package djmil.cordacheckers.cordaclient.dao.flow.arguments;
import com.fasterxml.jackson.databind.annotation.JsonSerialize; import com.fasterxml.jackson.databind.annotation.JsonSerialize;
@JsonSerialize @JsonSerialize
public class Empty { /**
* Representation of a request without arguments
*/
public class Req {
} }

11
backend/src/main/java/djmil/cordacheckers/cordaclient/dao/flow/arguments/ReqGameBoardMove.java Normal file
View File

@ -0,0 +1,11 @@
package djmil.cordacheckers.cordaclient.dao.flow.arguments;
import java.util.List;
import java.util.UUID;
public record ReqGameBoardMove(
UUID gameBoardUuid,
List<Integer> move
) {
}

6
backend/src/main/java/djmil/cordacheckers/cordaclient/dao/flow/arguments/GameProposalCreateReq.java → backend/src/main/java/djmil/cordacheckers/cordaclient/dao/flow/arguments/ReqGameProposalCreate.java
View File

@ -2,6 +2,10 @@ package djmil.cordacheckers.cordaclient.dao.flow.arguments;
import djmil.cordacheckers.cordaclient.dao.Piece; import djmil.cordacheckers.cordaclient.dao.Piece;
public record GameProposalCreateReq(String opponentName, Piece.Color opponentColor, String message) { public record ReqGameProposalCreate(
String opponentName,
Piece.Color opponentColor,
String message
) {
} }

19
backend/src/main/java/djmil/cordacheckers/cordaclient/dao/flow/arguments/Rsp.java Normal file
View File

@ -0,0 +1,19 @@
package djmil.cordacheckers.cordaclient.dao.flow.arguments;
import djmil.cordacheckers.cordaclient.dao.flow.RequestBody;
public interface Rsp <T> {
public T successStatus();
public String failureStatus();
public default T getResponce(RequestBody requestBody) {
if (failureStatus() != null) {
final String msg = requestBody.flowClassName() +" requestId " +requestBody.clientRequestId() +" has failed: " +failureStatus();
System.err.println(msg +". Reson " +failureStatus());
throw new RuntimeException(msg);
}
return successStatus();
}
}

22
backend/src/main/java/djmil/cordacheckers/cordaclient/dao/flow/arguments/RspGameState.java Normal file
View File

@ -0,0 +1,22 @@
package djmil.cordacheckers.cordaclient.dao.flow.arguments;
import djmil.cordacheckers.cordaclient.dao.GameState;
import djmil.cordacheckers.cordaclient.dao.flow.RequestBody;
public record RspGameState(
GameState successStatus,
String transactionId,
String failureStatus) implements Rsp<GameState> {
@Override
public GameState getResponce(RequestBody requestBody) {
if (failureStatus() != null) {
final String msg = requestBody.flowClassName() +" requestId " +requestBody.clientRequestId() +" has failed";
System.err.println(msg +". Reson " +failureStatus +". TransactionId " +transactionId);
throw new RuntimeException(msg);
}
System.out.println("[OK] "+transactionId);
return successStatus();
}
}

11
backend/src/main/java/djmil/cordacheckers/cordaclient/dao/flow/arguments/RspGameStateList.java Normal file
View File

@ -0,0 +1,11 @@
package djmil.cordacheckers.cordaclient.dao.flow.arguments;
import java.util.List;
import djmil.cordacheckers.cordaclient.dao.GameState;
public record RspGameStateList(
List<GameState> successStatus,
String failureStatus) implements Rsp<List<GameState>> {
}

22
backend/src/main/java/djmil/cordacheckers/gameproposal/GameProposalController.java
View File

@ -2,12 +2,14 @@ package djmil.cordacheckers.gameproposal;
import java.net.URI; import java.net.URI;
import java.util.List; import java.util.List;
import java.util.UUID;
import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity; import org.springframework.http.ResponseEntity;
import org.springframework.security.core.annotation.AuthenticationPrincipal; import org.springframework.security.core.annotation.AuthenticationPrincipal;
import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController; import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.util.UriComponentsBuilder; import org.springframework.web.util.UriComponentsBuilder;
@ -15,17 +17,13 @@ import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonMappingException; import com.fasterxml.jackson.databind.JsonMappingException;
import djmil.cordacheckers.cordaclient.CordaClient; import djmil.cordacheckers.cordaclient.CordaClient;
import djmil.cordacheckers.cordaclient.dao.GameState;
import djmil.cordacheckers.cordaclient.dao.HoldingIdentity; import djmil.cordacheckers.cordaclient.dao.HoldingIdentity;
import djmil.cordacheckers.cordaclient.dao.flow.arguments.GameProposalCreateReq;
import djmil.cordacheckers.cordaclient.dao.Piece; import djmil.cordacheckers.cordaclient.dao.Piece;
import djmil.cordacheckers.cordaclient.dao.GameProposal; import djmil.cordacheckers.cordaclient.dao.flow.arguments.ReqGameProposalCreate;
import djmil.cordacheckers.user.HoldingIdentityResolver; import djmil.cordacheckers.user.HoldingIdentityResolver;
import djmil.cordacheckers.user.User; import djmil.cordacheckers.user.User;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
@RestController @RestController
@RequestMapping("gameproposal") @RequestMapping("gameproposal")
@ -41,9 +39,9 @@ public class GameProposalController {
public ResponseEntity<String> findAllUnconsumed( public ResponseEntity<String> findAllUnconsumed(
@AuthenticationPrincipal User player @AuthenticationPrincipal User player
) { ) {
List<GameProposal> gpList = cordaClient.gameProposalList(player.getHoldingIdentity()); List<GameState> gsList = cordaClient.gameStateList(player.getHoldingIdentity());
return ResponseEntity.ok(gpList.toString()); return ResponseEntity.ok(gsList.toString());
} }
// @PostMapping() // @PostMapping()
@ -55,7 +53,7 @@ public class GameProposalController {
@PostMapping() @PostMapping()
public ResponseEntity<Void> createGameProposal( public ResponseEntity<Void> createGameProposal(
@AuthenticationPrincipal User sender, @AuthenticationPrincipal User sender,
@RequestBody GameProposalCreateReq gpRequest, @RequestBody ReqGameProposalCreate gpRequest,
UriComponentsBuilder ucb UriComponentsBuilder ucb
) throws JsonMappingException, JsonProcessingException { ) throws JsonMappingException, JsonProcessingException {
final HoldingIdentity gpSender = sender.getHoldingIdentity(); final HoldingIdentity gpSender = sender.getHoldingIdentity();
@ -64,7 +62,7 @@ public class GameProposalController {
final Piece.Color gpReceiverColor = gpRequest.opponentColor(); final Piece.Color gpReceiverColor = gpRequest.opponentColor();
// TODO handle expectionns here // TODO handle expectionns here
UUID newGameProposalUuid = cordaClient.gameProposalCreate( GameState gameStateView = cordaClient.gameProposalCreate(
gpSender, gpSender,
gpReceiver, gpReceiver,
gpReceiverColor, gpReceiverColor,
@ -73,7 +71,7 @@ public class GameProposalController {
URI locationOfNewGameProposal = ucb URI locationOfNewGameProposal = ucb
.path("gameproposal/{id}") .path("gameproposal/{id}")
.buildAndExpand(newGameProposalUuid) .buildAndExpand(gameStateView)
.toUri(); .toUri();
return ResponseEntity return ResponseEntity

255
backend/src/test/java/djmil/cordacheckers/cordaclient/CordaClientTest.java
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@ -1,255 +0,0 @@
package djmil.cordacheckers.cordaclient;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatThrownBy;
import java.util.Arrays;
import java.util.List;
import java.util.UUID;
import javax.naming.InvalidNameException;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonMappingException;
import djmil.cordacheckers.cordaclient.dao.GameState;
import djmil.cordacheckers.cordaclient.dao.GameBoard;
import djmil.cordacheckers.cordaclient.dao.GameProposal;
import djmil.cordacheckers.cordaclient.dao.GameResult;
import djmil.cordacheckers.cordaclient.dao.Piece;
import djmil.cordacheckers.cordaclient.dao.VirtualNode;
import djmil.cordacheckers.user.HoldingIdentityResolver;
@SpringBootTest
public class CordaClientTest {
@Autowired
CordaClient cordaClient;
@Autowired
HoldingIdentityResolver holdingIdentityResolver;
@Test
void testGetVirtualNodeList() throws InvalidNameException {
List<VirtualNode> vNodes = cordaClient.getVirtualNodeList();
assertThat(vNodes.size()).isEqualTo(5); // default vNode config for CSDE
}
@Test
void testGameProposalList() throws JsonProcessingException {
List<GameProposal> gpList = cordaClient.gameProposalList(
holdingIdentityResolver.getByUsername("Alice"));
System.out.println("testListGameProposals\n"+ gpList);
}
@Test
void testGameProposalCreate() throws JsonMappingException, JsonProcessingException {
final String gpIssuer = "alice";
final String gpAcquier = "bob";
final Piece.Color gpAcquierColor = Piece.Color.WHITE;
final String gpMessage = "GameProposal create test";
final UUID createdGpUuid = cordaClient.gameProposalCreate(
holdingIdentityResolver.getByUsername(gpIssuer),
holdingIdentityResolver.getByUsername(gpAcquier),
gpAcquierColor,
gpMessage);
List<GameProposal> gpListSender = cordaClient.gameProposalList(
holdingIdentityResolver.getByUsername(gpIssuer));
assertThat(findByUuid(gpListSender, createdGpUuid)).isNotNull();
List<GameProposal> gpListReceiver = cordaClient.gameProposalList(
holdingIdentityResolver.getByUsername(gpAcquier));
GameProposal gp;
assertThat(gp = findByUuid(gpListReceiver, createdGpUuid)).isNotNull();
assertThat(gp.acquier()).isEqualToIgnoringCase(gpAcquier);
assertThat(gp.issuer()).isEqualToIgnoringCase(gpIssuer);
assertThat(gp.acquierColor()).isEqualByComparingTo(gpAcquierColor);
assertThat(gp.message()).isEqualTo(gpMessage);
}
@Test
void testGameProposalReject() throws JsonMappingException, JsonProcessingException {
final String gpIssuer = "alice";
final String gpAcquier = "bob";
final Piece.Color gpReceiverColor = Piece.Color.WHITE;
final String gpMessage = "GameProposal REJECT test";
final UUID gpUuid = cordaClient.gameProposalCreate(
holdingIdentityResolver.getByUsername(gpIssuer),
holdingIdentityResolver.getByUsername(gpAcquier),
gpReceiverColor,
gpMessage);
System.out.println("Create GP UUID "+ gpUuid);
assertThatThrownBy(() -> { // Issuer can not reject
cordaClient.gameProposalReject(
holdingIdentityResolver.getByUsername(gpIssuer),
gpUuid);
});
final String rejectRes = cordaClient.gameProposalReject(
holdingIdentityResolver.getByUsername(gpAcquier),
gpUuid);
assertThat(rejectRes).isEqualToIgnoringCase("REJECTED");
List<GameProposal> gpListSender = cordaClient.gameProposalList(
holdingIdentityResolver.getByUsername(gpIssuer));
assertThat(findByUuid(gpListSender, gpUuid)).isNull();
List<GameProposal> gpListReceiver = cordaClient.gameProposalList(
holdingIdentityResolver.getByUsername(gpAcquier));
assertThat(findByUuid(gpListReceiver, gpUuid)).isNull();
// GameProposal can not be rejected twice
assertThatThrownBy(() -> {
cordaClient.gameProposalReject(
holdingIdentityResolver.getByUsername(gpIssuer),
gpUuid);
});
}
@Test
void testGameProposalAccept() throws JsonMappingException, JsonProcessingException {
final String gpIssuer = "alice";
final String gpAcquier = "bob";
final Piece.Color gpAcquierColor = Piece.Color.WHITE;
final String gpMessage = "GameProposal ACCEPT test";
final UUID gpUuid = cordaClient.gameProposalCreate(
holdingIdentityResolver.getByUsername(gpIssuer),
holdingIdentityResolver.getByUsername(gpAcquier),
gpAcquierColor,
gpMessage
);
System.out.println("New GameProposal UUID "+ gpUuid);
assertThatThrownBy(() -> { // Issuer can not accept
cordaClient.gameProposalAccept(
holdingIdentityResolver.getByUsername(gpIssuer),
gpUuid);
});
final GameBoard gbState = cordaClient.gameProposalAccept(
holdingIdentityResolver.getByUsername(gpAcquier),
gpUuid);
System.out.println("New GameBoard UUID "+gbState);
List<GameBoard> gbListIssuer = cordaClient.gameBoardList(
holdingIdentityResolver.getByUsername(gpIssuer));
GameBoard gbAlice = findByUuid(gbListIssuer, gbState.gameUuid());
assertThat(gbAlice).isNotNull();
assertThat(gbAlice.opponentName()).isEqualToIgnoringCase(gpAcquier);
assertThat(gbAlice.opponentColor()).isEqualByComparingTo(gpAcquierColor);
assertThat(gbAlice.opponentMove()).isEqualTo(true);
List<GameBoard> gbListAcquier = cordaClient.gameBoardList(
holdingIdentityResolver.getByUsername(gpAcquier));
GameBoard bgBob = findByUuid(gbListAcquier, gbState.gameUuid());
assertThat(bgBob).isNotNull();
assertThat(bgBob.opponentName()).isEqualToIgnoringCase(gpIssuer);
assertThat(bgBob.opponentColor()).isEqualByComparingTo(Piece.Color.BLACK);
assertThat(bgBob.opponentMove()).isEqualTo(false);
assertThatThrownBy(() -> { // GameProposal can not be accepted twice
cordaClient.gameProposalAccept(
holdingIdentityResolver.getByUsername(gpAcquier),
gpUuid);
});
}
@Test
void testGameBoardList() throws JsonMappingException, JsonProcessingException {
List <GameBoard> gbList = cordaClient.gameBoardList(
holdingIdentityResolver.getByUsername("bob"));
System.out.println("GB list: " +gbList);
}
@Test
void testGameBoardSurrender() throws JsonMappingException, JsonProcessingException, InvalidNameException {
final var hiAlice = holdingIdentityResolver.getByUsername("alice");
final var hiBob = holdingIdentityResolver.getByUsername("bob");
final var bobColor = Piece.Color.WHITE;
final UUID gpUuid = cordaClient.gameProposalCreate(
hiAlice, hiBob,
bobColor, "GameBoard SURRENDER test"
);
System.out.println("New GameProposal UUID "+ gpUuid);
final GameBoard gbState = cordaClient.gameProposalAccept(
hiBob, gpUuid
);
System.out.println("New GameBoard UUID "+ gbState.gameUuid());
assertThatThrownBy(() -> { // Alice can not surrender, since it is Bob's turn
cordaClient.gameBoardSurrender(
hiAlice, gbState.gameUuid());
});
final GameResult gameResult = cordaClient.gameBoardSurrender(
hiBob, gbState.gameUuid());
assertThat(gameResult.whitePlayerName()).isEqualTo(hiBob.getName());
assertThat(gameResult.blackPlayerName()).isEqualTo(hiAlice.getName());
assertThat(gameResult.victoryColor()).isEqualByComparingTo(Piece.Color.BLACK);
}
@Test
void testGameBoardMove() throws JsonMappingException, JsonProcessingException, InvalidNameException {
final var hiAlice = holdingIdentityResolver.getByUsername("alice");
final var hiBob = holdingIdentityResolver.getByUsername("bob");
final var bobColor = Piece.Color.WHITE;
final UUID gpUuid = cordaClient.gameProposalCreate(
hiAlice, hiBob,
bobColor, "GameBoard MOVE test"
);
System.out.println("New GameProposal UUID "+ gpUuid);
final GameBoard gbState = cordaClient.gameProposalAccept(
hiBob, gpUuid
);
System.out.println("New GameBoard UUID "+ gbState.gameUuid());
assertThatThrownBy(() -> { // Alice can not move, since it is Bob's turn
cordaClient.gameBoardMove(
hiAlice, gbState.gameUuid(),
Arrays.asList(1, 2));
});
final GameBoard gameBoard = cordaClient.gameBoardMove(
hiBob, gbState.gameUuid(), Arrays.asList(1, 2));
}
private <T extends GameState> T findByUuid(List<T> statesList, UUID uuid) {
for (T state : statesList) {
if (state.gameUuid().compareTo(uuid) == 0)
return state;
};
return null;
}
}

99
backend/src/test/java/djmil/cordacheckers/cordaclient/GameBoardTests.java Normal file
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@ -0,0 +1,99 @@
package djmil.cordacheckers.cordaclient;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatThrownBy;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import djmil.cordacheckers.cordaclient.dao.GameState;
import djmil.cordacheckers.cordaclient.dao.GameState.Status;
import djmil.cordacheckers.cordaclient.dao.Piece;
import djmil.cordacheckers.user.HoldingIdentityResolver;
@SpringBootTest
public class GameBoardTests {
@Autowired
CordaClient cordaClient;
@Autowired
HoldingIdentityResolver holdingIdentityResolver;
final String whitePlayerName = "alice";
final String blackPlayerName = "bob";
@Test
void testSurrender() {
final var hiWhite = holdingIdentityResolver.getByUsername(whitePlayerName);
final var hiBlack = holdingIdentityResolver.getByUsername(blackPlayerName);
final String message = "GameBoard SURRENDER test";
final GameState game = cordaClient.gameProposalCreate(
hiWhite, hiBlack, Piece.Color.BLACK, message);
System.out.println("Game UUID " +game.uuid());
final GameState acceptedGameBlackView = cordaClient.gameProposalAccept(
hiBlack, game.uuid());
assertThat(acceptedGameBlackView.opponentColor()).isEqualByComparingTo(Piece.Color.WHITE);
assertThat(acceptedGameBlackView.status()).isEqualByComparingTo(Status.GAME_BOARD_WAIT_FOR_OPPONENT);
assertThatThrownBy(() -> { // Black can not surrender, since it is opponent's turn
cordaClient.gameBoardSurrender(
hiBlack, game.uuid());
});
final GameState surrendererGameView = cordaClient.gameBoardSurrender(
hiWhite, game.uuid());
assertThat(surrendererGameView.opponentName()).isEqualToIgnoringCase(blackPlayerName);
assertThat(surrendererGameView.opponentColor()).isEqualByComparingTo(Piece.Color.BLACK);
assertThat(surrendererGameView.status()).isEqualByComparingTo(Status.GAME_RESULT_YOU_LOOSE);
final GameState winnerGameView = cordaClient.gameStateGet(
hiBlack, game.uuid());
assertThat(winnerGameView.opponentName()).isEqualToIgnoringCase(whitePlayerName);
assertThat(winnerGameView.opponentColor()).isEqualByComparingTo(Piece.Color.WHITE);
assertThat(winnerGameView.status()).isEqualByComparingTo(Status.GAME_RESULT_YOU_WON);
}
// @Test
// void testGameBoardMove() throws JsonMappingException, JsonProcessingException, InvalidNameException {
// final var hiAlice = holdingIdentityResolver.getByUsername("alice");
// final var hiBob = holdingIdentityResolver.getByUsername("bob");
// final var bobColor = Piece.Color.WHITE;
// final UUID gpUuid = cordaClient.gameProposalCreate(
// hiAlice, hiBob,
// bobColor, "GameBoard MOVE test"
// );
// System.out.println("New GameProposal UUID "+ gpUuid);
// final GameBoard gbState = cordaClient.gameProposalAccept(
// hiBob, gpUuid
// );
// System.out.println("New GameBoard UUID "+ gbState.gameUuid());
// assertThatThrownBy(() -> { // Alice can not move, since it is Bob's turn
// cordaClient.gameBoardMove(
// hiAlice, gbState.gameUuid(),
// Arrays.asList(1, 2));
// });
// final GameBoard gameBoard = cordaClient.gameBoardMove(
// hiBob, gbState.gameUuid(), Arrays.asList(1, 2));
// }
// private <T extends GameState> T findByUuid(List<T> statesList, UUID uuid) {
// for (T state : statesList) {
// if (state.uuid().compareTo(uuid) == 0)
// return state;
// };
// return null;
// }
}

171
backend/src/test/java/djmil/cordacheckers/cordaclient/GameProposalTests.java Normal file
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@ -0,0 +1,171 @@
package djmil.cordacheckers.cordaclient;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatThrownBy;
import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import djmil.cordacheckers.cordaclient.dao.GameState;
import djmil.cordacheckers.cordaclient.dao.GameState.Status;
import djmil.cordacheckers.cordaclient.dao.Piece;
import djmil.cordacheckers.user.HoldingIdentityResolver;
@SpringBootTest
public class GameProposalTests {
@Autowired
CordaClient cordaClient;
@Autowired
HoldingIdentityResolver holdingIdentityResolver;
final String issuer = "alice";
final String acquier = "bob";
final Piece.Color acquierColor = Piece.Color.WHITE;
@Test
void testCreate() {
final var hiIssuer = holdingIdentityResolver.getByUsername(issuer);
final var hiAcquier = holdingIdentityResolver.getByUsername(acquier);
final String message = "GameProposal CREATE test";
final GameState issuerGameView = cordaClient.gameProposalCreate(
hiIssuer,
hiAcquier,
acquierColor,
message);
System.out.println("Game UUID " +issuerGameView.uuid());
/*
* Issuers perspective on a newly created GameProposal
*/
assertThat(issuerGameView.status()).isEqualByComparingTo(Status.GAME_PROPOSAL_WAIT_FOR_OPPONENT);
assertThat(issuerGameView.opponentName()).isEqualToIgnoringCase(acquier);
assertThat(issuerGameView.opponentColor()).isEqualByComparingTo(acquierColor);
assertThat(issuerGameView.message()).isEqualToIgnoringCase(message);
assertThat(issuerGameView.uuid()).isNotNull();
/*
* Acquier shall be able to find newly created GameProposal
*/
GameState acquierGameView = assertDoesNotThrow( () -> {
return cordaClient.gameStateList(hiAcquier)
.stream()
.filter(gameView -> gameView.uuid().equals(issuerGameView.uuid()))
.reduce((a, b) -> {throw new IllegalStateException("Duplicate");})
.get();
});
assertThat(acquierGameView.status()).isEqualByComparingTo(Status.GAME_PROPOSAL_WAIT_FOR_YOU);
assertThat(acquierGameView.opponentName()).isEqualToIgnoringCase(issuer);
assertThat(acquierGameView.opponentColor()).isEqualByComparingTo(acquierColor.opposite());
assertThat(acquierGameView.message()).isEqualToIgnoringCase(message);
assertThat(acquierGameView.uuid()).isEqualByComparingTo(issuerGameView.uuid());
}
@Test
void testReject() {
final var hiIssuer = holdingIdentityResolver.getByUsername(issuer);
final var hiAcquier = holdingIdentityResolver.getByUsername(acquier);
final String message = "GameProposal REJECT test";
final GameState game = cordaClient.gameProposalCreate(
hiIssuer, hiAcquier, acquierColor, message);
System.out.println("Game UUID " +game.uuid());
assertThatThrownBy(() -> { // Issuer can not reject
cordaClient.gameProposalReject(
hiIssuer, game.uuid());
});
final GameState pendingGameView = cordaClient.gameStateGet(
hiAcquier, game.uuid());
assertThat(pendingGameView.status()).isEqualByComparingTo(Status.GAME_PROPOSAL_WAIT_FOR_YOU);
assertThat(pendingGameView.uuid()).isEqualByComparingTo(game.uuid());
final GameState rejectedGameView = cordaClient.gameProposalReject(
hiAcquier, game.uuid());
assertThat(rejectedGameView.status()).isEqualByComparingTo(Status.GAME_PROPOSAL_REJECTED);
assertThat(rejectedGameView.uuid()).isEqualByComparingTo(game.uuid());
assertThatThrownBy(() -> { // Issuer has no pending GameProposal
cordaClient.gameStateGet(
hiIssuer, game.uuid());
});
}
@Test
void testCancel() {
final var hiIssuer = holdingIdentityResolver.getByUsername(issuer);
final var hiAcquier = holdingIdentityResolver.getByUsername(acquier);
final String message = "GameProposal CANCEL test";
final GameState game = cordaClient.gameProposalCreate(
hiIssuer, hiAcquier, acquierColor, message);
System.out.println("Game UUID " +game.uuid());
assertThatThrownBy(() -> { // Acquier can not cancel
cordaClient.gameProposalCancel(
hiAcquier, game.uuid());
});
final GameState pendingGameView = cordaClient.gameStateGet(
hiIssuer, game.uuid());
assertThat(pendingGameView.status()).isEqualByComparingTo(Status.GAME_PROPOSAL_WAIT_FOR_OPPONENT);
assertThat(pendingGameView.uuid()).isEqualByComparingTo(game.uuid());
final GameState canceledGameView = cordaClient.gameProposalCancel(
hiIssuer, game.uuid());
assertThat(canceledGameView.status()).isEqualByComparingTo(Status.GAME_PROPOSAL_CANCELED);
assertThat(canceledGameView.uuid()).isEqualByComparingTo(game.uuid());
assertThatThrownBy(() -> { // Acquier has no pending GameProposal
cordaClient.gameStateGet(
hiAcquier, game.uuid());
});
}
@Test
void testAccept() {
final var hiIssuer = holdingIdentityResolver.getByUsername(issuer);
final var hiAcquier = holdingIdentityResolver.getByUsername(acquier);
final String message = "GameProposal ACCEPT test";
final GameState game = cordaClient.gameProposalCreate(
hiIssuer, hiAcquier, acquierColor, message);
System.out.println("Game UUID " +game.uuid());
assertThatThrownBy(() -> { // Issuer can not accept
cordaClient.gameProposalAccept(
hiIssuer, game.uuid());
});
final GameState acceptedGameAcquierView = cordaClient.gameProposalAccept(
hiAcquier, game.uuid());
assertThat(acceptedGameAcquierView.opponentName()).isEqualToIgnoringCase(issuer);
assertThat(acceptedGameAcquierView.opponentColor()).isEqualByComparingTo(acquierColor.opposite());
assertThat(acceptedGameAcquierView.status()).isEqualByComparingTo(Status.GAME_BOARD_WAIT_FOR_YOU);
assertThat(acceptedGameAcquierView.uuid()).isEqualByComparingTo(game.uuid());
assertThatThrownBy(() -> { // same GameProposal can not be accepted twice
cordaClient.gameProposalAccept(
hiIssuer, game.uuid());
});
final GameState acceptedGameIssuerView = cordaClient.gameStateGet(
hiIssuer, game.uuid());
assertThat(acceptedGameIssuerView.opponentName()).isEqualToIgnoringCase(acquier);
assertThat(acceptedGameIssuerView.opponentColor()).isEqualByComparingTo(acquierColor);
assertThat(acceptedGameIssuerView.status()).isEqualByComparingTo(Status.GAME_BOARD_WAIT_FOR_OPPONENT);
assertThat(acceptedGameIssuerView.uuid()).isEqualByComparingTo(game.uuid());
}
}

53
backend/src/test/java/djmil/cordacheckers/cordaclient/GameStateTests.java Normal file
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@ -0,0 +1,53 @@
package djmil.cordacheckers.cordaclient;
import static org.assertj.core.api.Assertions.assertThat;
import java.util.List;
import java.util.UUID;
import javax.naming.InvalidNameException;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import com.fasterxml.jackson.core.JsonProcessingException;
import djmil.cordacheckers.cordaclient.dao.GameState;
import djmil.cordacheckers.cordaclient.dao.VirtualNode;
import djmil.cordacheckers.user.HoldingIdentityResolver;
@SpringBootTest
public class GameStateTests {
@Autowired
CordaClient cordaClient;
@Autowired
HoldingIdentityResolver holdingIdentityResolver;
@Test
void testGetVirtualNodeList() throws InvalidNameException {
List<VirtualNode> vNodes = cordaClient.getVirtualNodeList();
assertThat(vNodes.size()).isEqualTo(5); // default vNode config for CSDE
}
@Test
void testList() throws JsonProcessingException {
List<GameState> gsList = cordaClient.gameStateList(
holdingIdentityResolver.getByUsername("bob"));
System.out.println(gsList);
}
@Test
void testGet() throws JsonProcessingException {
GameState gameStateView = cordaClient.gameStateGet(
holdingIdentityResolver.getByUsername("bob"),
UUID.fromString("cf357d0a-8f64-4599-b9b5-d263163812d4")
);
System.out.println(gameStateView);
}
}

4
backend/src/test/java/djmil/cordacheckers/cordaclient/dao/flow/RequestBodyTest.java
View File

@ -5,7 +5,7 @@ import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.json.JsonTest; import org.springframework.boot.test.autoconfigure.json.JsonTest;
import org.springframework.boot.test.json.JacksonTester; import org.springframework.boot.test.json.JacksonTester;
import djmil.cordacheckers.cordaclient.dao.flow.arguments.Empty; import djmil.cordacheckers.cordaclient.dao.flow.arguments.Req;
import static org.assertj.core.api.Assertions.assertThat; import static org.assertj.core.api.Assertions.assertThat;
@ -23,7 +23,7 @@ public class RequestBodyTest {
RequestBody requestBody = new RequestBody( RequestBody requestBody = new RequestBody(
"list-2", "list-2",
"djmil.cordacheckers.gameproposal.ListFlow", "djmil.cordacheckers.gameproposal.ListFlow",
new Empty() new Req()
); );
assertThat(jTester.write(requestBody)).isEqualToJson("requestBody/ListFlow.json"); assertThat(jTester.write(requestBody)).isEqualToJson("requestBody/ListFlow.json");

128
corda/contracts/src/main/java/djmil/cordacheckers/contracts/GameBoardCommand.java
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@ -1,128 +0,0 @@
package djmil.cordacheckers.contracts;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleInputState;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleOutputState;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.requireThat;
import java.util.List;
import djmil.cordacheckers.states.GameBoardState;
import djmil.cordacheckers.states.GameResultState;
import net.corda.v5.base.annotations.ConstructorForDeserialization;
import net.corda.v5.base.annotations.CordaSerializable;
import net.corda.v5.base.exceptions.CordaRuntimeException;
import net.corda.v5.base.types.MemberX500Name;
import net.corda.v5.ledger.utxo.Command;
import net.corda.v5.ledger.utxo.transaction.UtxoLedgerTransaction;
public class GameBoardCommand implements Command {
@CordaSerializable
public static enum Type {
MOVE,
SURRENDER,
FINISH;
}
private final Type type;
private final List<Integer> move; // [0] from, [1] to
// Serialisation service requires a default constructor
public GameBoardCommand() {
this.type = null;
this.move = null;
}
@ConstructorForDeserialization
public GameBoardCommand(Type type, List<Integer> move) {
this.type = type;
this.move = move;
}
public GameBoardCommand(Type type) {
if (type == Type.MOVE)
throw new CordaRuntimeException (BAD_ACTIONMOVE_CONSTRUCTOR);
this.type = type;
this.move = null;
}
public GameBoardCommand(List<Integer> move) {
this.type = Type.MOVE;
this.move = move;
}
public Type getType() {
return this.type;
}
public List<Integer> getMove() {
return this.move;
}
public MemberX500Name getInitiator(GameBoardState gameBoardState) {
return gameBoardState.getMovePlayerName();
}
public MemberX500Name getRespondent(GameBoardState gameBoardState) {
return gameBoardState.getCounterpartyName(gameBoardState.getMovePlayerName());
}
public static void validateSurrenderTrx(UtxoLedgerTransaction trx) {
requireThat(trx.getInputContractStates().size() == 1, SURRENDER_INPUT_STATE);
final var inGameBoardState = getSingleInputState(trx, GameBoardState.class);
requireThat(trx.getOutputContractStates().size() == 1, SURRENDER_OUTPUT_STATE);
final var outGameResultState = getSingleOutputState(trx, GameResultState.class);
requireThat(inGameBoardState.getWhitePlayerName().compareTo(outGameResultState.getWinnerName()) == 0, IN_OUT_PARTICIPANTS);
requireThat(inGameBoardState.getBlackPlayerName().compareTo(outGameResultState.getOpponentName()) == 0, IN_OUT_PARTICIPANTS);
}
public static void validateMoveTrx(UtxoLedgerTransaction trx) {
requireThat(trx.getInputContractStates().size() == 1, MOVE_INPUT_STATE);
final var inGameBoardState = getSingleInputState(trx, GameBoardState.class);
requireThat(trx.getOutputContractStates().size() == 1, MOVE_OUTPUT_STATE);
final var outGameBoardState = getSingleOutputState(trx, GameBoardState.class);
requireThat(inGameBoardState.getWhitePlayerName().compareTo(outGameBoardState.getWhitePlayerName()) == 0, IN_OUT_PARTICIPANTS);
requireThat(inGameBoardState.getBlackPlayerName().compareTo(outGameBoardState.getBlackPlayerName()) == 0, IN_OUT_PARTICIPANTS);
}
public static void validateFinishTrx(UtxoLedgerTransaction trx) {
requireThat(trx.getInputContractStates().size() == 1, FINAL_MOVE_INPUT_STATE);
final var inGameBoardState = getSingleInputState(trx, GameBoardState.class);
requireThat(trx.getOutputContractStates().size() == 1, FINAL_MOVE_OUTPUT_STATE);
final var outGameResultState = getSingleOutputState(trx, GameResultState.class);
requireThat(inGameBoardState.getWhitePlayerName().compareTo(outGameResultState.getWinnerName()) == 0, IN_OUT_PARTICIPANTS);
requireThat(inGameBoardState.getBlackPlayerName().compareTo(outGameResultState.getOpponentName()) == 0, IN_OUT_PARTICIPANTS);
}
static final String BAD_ACTIONMOVE_CONSTRUCTOR = "Bad constructor for Action.MOVE";
static final String SURRENDER_INPUT_STATE = "SURRENDER command should have exactly one GameBoardState input state";
static final String SURRENDER_OUTPUT_STATE = "SURRENDER command should have exactly one GameResultState output state";
static final String MOVE_INPUT_STATE = "MOVE command should have exactly one GameBoardState input state";
static final String MOVE_OUTPUT_STATE = "MOVE command should have exactly one GameBoardState output state";
static final String MOVE_OUT_BOARD = "MOVE command: move checkers rules violation";
static final String MOVE_OUT_COLOR = "MOVE command: moveColor checkers rules violation";
static final String FINAL_MOVE_INPUT_STATE = "FINAL_MOVE command should have exactly one GameBoardState input state";
static final String FINAL_MOVE_OUTPUT_STATE = "FINAL_MOVE command should have exactly one GameResultState output state";
static final String IN_OUT_PARTICIPANTS = "InputState and OutputState participants do not match";
public static class CommandTypeException extends RuntimeException {
public CommandTypeException() {
super("Bad GameBoardCommand type");
}
public CommandTypeException(String message) {
super(message);
}
}
}

60
corda/contracts/src/main/java/djmil/cordacheckers/contracts/GameBoardContract.java
View File

@ -1,12 +1,11 @@
package djmil.cordacheckers.contracts; package djmil.cordacheckers.contracts;
import static djmil.cordacheckers.contracts.GameCommand.requireThat;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleCommand; import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleCommand;
import org.slf4j.Logger; import org.slf4j.Logger;
import org.slf4j.LoggerFactory; import org.slf4j.LoggerFactory;
import net.corda.v5.base.exceptions.CordaRuntimeException;
import net.corda.v5.ledger.utxo.Command;
import net.corda.v5.ledger.utxo.transaction.UtxoLedgerTransaction; import net.corda.v5.ledger.utxo.transaction.UtxoLedgerTransaction;
public class GameBoardContract implements net.corda.v5.ledger.utxo.Contract { public class GameBoardContract implements net.corda.v5.ledger.utxo.Contract {
@ -17,52 +16,25 @@ public class GameBoardContract implements net.corda.v5.ledger.utxo.Contract {
public void verify(UtxoLedgerTransaction trx) { public void verify(UtxoLedgerTransaction trx) {
log.info("GameBoardContract.verify() called"); log.info("GameBoardContract.verify() called");
requireThat(trx.getCommands().size() == 1, REQUIRE_SINGLE_COMMAND); requireThat(trx.getCommands().size() == 1, GameCommand.REQUIRE_SINGLE_COMMAND);
final Command command = getSingleCommand(trx, Command.class); final GameCommand command = getSingleCommand(trx, GameCommand.class);
if (command instanceof GameProposalCommand) { switch (command.action) {
log.info("GameBoardContract.verify() as GameProposalCommand "+(GameProposalCommand)command); case GAME_PROPOSAL_ACCEPT:
switch ((GameProposalCommand)command) { GameCommand.validateGameProposalAccept(trx);
case ACCEPT: break;
GameProposalCommand.validateAcceptTrx(trx);
break; case GAME_BOARD_MOVE:
GameCommand.validateGameBoardMove(trx);
break;
default: case GAME_BOARD_SURRENDER:
throw new CordaRuntimeException("UNKNOWN_COMMAND"); GameCommand.validateGameBoardSurrender(trx);
} break;
} else
if (command instanceof GameBoardCommand) {
log.info("GameBoardContract.verify() as GameBoardCommand "+((GameBoardCommand)command).getType());
switch (((GameBoardCommand)command).getType()) {
case MOVE:
GameBoardCommand.validateMoveTrx(trx);
break;
case SURRENDER:
GameBoardCommand.validateSurrenderTrx(trx);
break;
case FINISH: default:
GameBoardCommand.validateFinishTrx(trx); throw new GameCommand.ActionException();
break;
default:
throw new GameBoardCommand.CommandTypeException();
}
} else {
throw new RuntimeException("Bad utxo command type");
} }
} }
private static void requireThat(boolean asserted, String errorMessage) {
if(!asserted) {
throw new CordaRuntimeException("Failed requirement: " + errorMessage);
}
}
static final String REQUIRE_SINGLE_COMMAND = "Require a single command";
static final String SINGLE_STATE_EXPECTED = "Single state expected";
static final String NO_REFERANCE_GAMEPROPOSAL_STATE_FOR_TRXID = "No reference GamePropsal state found for trx.id ";
} }

243
corda/contracts/src/main/java/djmil/cordacheckers/contracts/GameCommand.java Normal file
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@ -0,0 +1,243 @@
package djmil.cordacheckers.contracts;
import djmil.cordacheckers.states.GameBoardState;
import djmil.cordacheckers.states.GameProposalState;
import djmil.cordacheckers.states.GameResultState;
import djmil.cordacheckers.states.GameState;
import net.corda.v5.base.annotations.ConstructorForDeserialization;
import net.corda.v5.base.annotations.CordaSerializable;
import net.corda.v5.base.types.MemberX500Name;
import net.corda.v5.ledger.utxo.Command;
import net.corda.v5.ledger.utxo.StateAndRef;
import net.corda.v5.ledger.utxo.transaction.UtxoLedgerTransaction;
import java.lang.reflect.Array;
import java.util.LinkedList;
import java.util.List;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleInputState;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleOutputState;
public class GameCommand implements Command {
@CordaSerializable
public static enum Action {
GAME_PROPOSAL_CREATE,
GAME_PROPOSAL_CANCEL,
GAME_PROPOSAL_ACCEPT,
GAME_PROPOSAL_REJECT,
GAME_BOARD_MOVE,
GAME_BOARD_SURRENDER,
GAME_RESULT_CREATE;
}
public final Action action;
public final List<Integer> move; // [0] from, [1] to
public static class ActionException extends RuntimeException {
public ActionException() {
super("Bad GameCommand.Action value");
}
}
// Serialisation service requires a default constructor
public GameCommand() {
this.action = null;
this.move = null;
}
public GameCommand(Action action) {
if (action == Action.GAME_BOARD_MOVE)
throw new ActionException();
this.action = action;
this.move = null;
}
public GameCommand(List<Integer> move) {
this.action = Action.GAME_BOARD_MOVE;
this.move = move;
}
@ConstructorForDeserialization
public GameCommand(Action action, List<Integer> move) {
this.action = action;
this.move = move;
}
public Action getAction() {
return action;
}
public List<Integer> getMove() {
return move;
}
/*
* Session initiator/respondent
*/
public MemberX500Name getObserver(StateAndRef<GameState> gameStateSar) {
final GameState gameState = gameStateSar.getState().getContractState();
return gameState.getCounterpartyName(getActor(gameState));
}
public MemberX500Name getActor(StateAndRef<GameState> gameStateSar) {
return getActor(gameStateSar.getState().getContractState());
}
public MemberX500Name getObserver(GameState gameState) {
return gameState.getCounterpartyName(getActor(gameState));
}
public MemberX500Name getActor(GameState gameState) {
switch (action) {
case GAME_PROPOSAL_CREATE:
case GAME_PROPOSAL_CANCEL:
if (gameState instanceof GameProposalState)
return ((GameProposalState)gameState).getIssuer();
break;
case GAME_PROPOSAL_REJECT:
if (gameState instanceof GameProposalState)
return ((GameProposalState)gameState).getAcquier();
break;
case GAME_PROPOSAL_ACCEPT:
if (gameState instanceof GameProposalState) // <<-- Session validation perspective
return ((GameProposalState)gameState).getAcquier();
if (gameState instanceof GameBoardState) // <<-- GameViewBuilder perspective
return ((GameBoardState)gameState).getMovePlayerName();
break;
case GAME_BOARD_MOVE:
if (gameState instanceof GameBoardState)
return ((GameBoardState)gameState).getMovePlayerName();
break;
case GAME_BOARD_SURRENDER:
if (gameState instanceof GameResultState)
return ((GameResultState)gameState).getOpponentName();
break;
case GAME_RESULT_CREATE:
if (gameState instanceof GameResultState)
return ((GameResultState)gameState).getWinnerName();
break;
default:
throw new ActionException();
}
throw new RuntimeException(action +": unexpected GameState type " +gameState.getClass());
}
/*
* Transaction validation
*/
public static void validateGameProposalCreate(UtxoLedgerTransaction trx) {
requireThat(trx.getInputContractStates().isEmpty(), CREATE_INPUT_STATE);
requireThat(trx.getOutputContractStates().size() == 1, CREATE_OUTPUT_STATE);
GameProposalState outputState = getSingleOutputState(trx, GameProposalState.class);
requireThat(outputState.getAcquierColor() != null, NON_NULL_RECIPIENT_COLOR);
}
public static void validateGameProposalAccept(UtxoLedgerTransaction trx) {
requireThat(trx.getInputContractStates().size() == 1, ACCEPT_INPUT_STATE);
requireThat(trx.getOutputContractStates().size() == 1, ACCEPT_OUTPUT_STATE);
GameProposalState inGameProposal = getSingleInputState(trx, GameProposalState.class);
GameBoardState outGameBoard = getSingleOutputState(trx, GameBoardState.class);
requireThat(outGameBoard.getParticipants().containsAll(inGameProposal.getParticipants()), IN_OUT_PARTICIPANTS);
}
public static void validateGameProposalReject(UtxoLedgerTransaction trx) {
requireThat(trx.getInputContractStates().size() == 1, REJECT_INPUT_STATE);
requireThat(trx.getOutputContractStates().isEmpty(), REJECT_OUTPUT_STATE);
getSingleInputState(trx, GameProposalState.class);
}
public static void validateGameProposalCancel(UtxoLedgerTransaction trx) {
requireThat(trx.getInputContractStates().size() == 1, CANCEL_INPUT_STATE);
requireThat(trx.getOutputContractStates().isEmpty(), CANCEL_OUTPUT_STATE);
getSingleInputState(trx, GameProposalState.class);
}
public static void validateGameBoardSurrender(UtxoLedgerTransaction trx) {
requireThat(trx.getInputContractStates().size() == 1, SURRENDER_INPUT_STATE);
final var inGameBoardState = getSingleInputState(trx, GameBoardState.class);
requireThat(trx.getOutputContractStates().size() == 1, SURRENDER_OUTPUT_STATE);
final var outGameResultState = getSingleOutputState(trx, GameResultState.class);
List<MemberX500Name> inActors = new LinkedList<MemberX500Name>(List.of(
inGameBoardState.getWhitePlayerName(),
inGameBoardState.getBlackPlayerName())
);
List<MemberX500Name> outActors = new LinkedList<MemberX500Name>(List.of(
outGameResultState.getWinnerName(),
outGameResultState.getOpponentName())
);
requireThat(inActors.containsAll(outActors) && outActors.containsAll(inActors), IN_OUT_PARTICIPANTS);
final var activePlayerName = outGameResultState.getCounterpartyName(outGameResultState.getWinnerName());
requireThat(inGameBoardState.getMovePlayerName().compareTo(activePlayerName) == 0, SURRENDER_ACTOR + "expected " +inGameBoardState.getMovePlayerName() +" actual " +activePlayerName);
}
public static void validateGameBoardMove(UtxoLedgerTransaction trx) {
requireThat(trx.getInputContractStates().size() == 1, MOVE_INPUT_STATE);
final var inGameBoardState = getSingleInputState(trx, GameBoardState.class);
requireThat(trx.getOutputContractStates().size() == 1, MOVE_OUTPUT_STATE);
final var outGameBoardState = getSingleOutputState(trx, GameBoardState.class);
requireThat(inGameBoardState.getWhitePlayerName().compareTo(outGameBoardState.getWhitePlayerName()) == 0, IN_OUT_PARTICIPANTS);
requireThat(inGameBoardState.getBlackPlayerName().compareTo(outGameBoardState.getBlackPlayerName()) == 0, IN_OUT_PARTICIPANTS);
}
public static void validateGameResultCreate(UtxoLedgerTransaction trx) {
throw new RuntimeException("Unimplemented");
}
public static void requireThat(boolean asserted, String errorMessage) {
if (!asserted) {
throw new IllegalStateException("Failed requirement: " + errorMessage);
}
}
static final String REQUIRE_SINGLE_COMMAND = "Require a single command";
static final String IN_OUT_PARTICIPANTS = "Input participants should represent output participants";
static final String CREATE_INPUT_STATE = "Create command should have no input states";
static final String CREATE_OUTPUT_STATE = "Create command should output exactly one GameProposal state";
static final String NON_NULL_RECIPIENT_COLOR = "GameProposal.recipientColor field can not be null";
static final String REJECT_INPUT_STATE = "Reject command should have exactly one GameProposal input state";
static final String REJECT_OUTPUT_STATE = "Reject command should have no output states";
static final String CANCEL_INPUT_STATE = "Cancel command should have exactly one GameProposal input state";
static final String CANCEL_OUTPUT_STATE = "Cancel command should have no output states";
static final String ACCEPT_INPUT_STATE = "Accept command should have exactly one GameProposal input state";
static final String ACCEPT_OUTPUT_STATE = "Accept command should have exactly one GameBoard output state";
static final String SURRENDER_INPUT_STATE = "SURRENDER command should have exactly one GameBoardState input state";
static final String SURRENDER_OUTPUT_STATE = "SURRENDER command should have exactly one GameResultState output state";
static final String SURRENDER_ACTOR = "Only active player can SURRENDER";
static final String MOVE_INPUT_STATE = "MOVE command should have exactly one GameBoardState input state";
static final String MOVE_OUTPUT_STATE = "MOVE command should have exactly one GameBoardState output state";
static final String MOVE_OUT_BOARD = "MOVE command: move checkers rules violation";
static final String MOVE_OUT_COLOR = "MOVE command: moveColor checkers rules violation";
}

102
corda/contracts/src/main/java/djmil/cordacheckers/contracts/GameProposalCommand.java
View File

@ -1,102 +0,0 @@
package djmil.cordacheckers.contracts;
import djmil.cordacheckers.states.GameBoardState;
import djmil.cordacheckers.states.GameProposalState;
import net.corda.v5.base.types.MemberX500Name;
import net.corda.v5.ledger.utxo.Command;
import net.corda.v5.ledger.utxo.StateAndRef;
import net.corda.v5.ledger.utxo.transaction.UtxoLedgerTransaction;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleInputState;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleOutputState;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.requireThat;
public enum GameProposalCommand implements Command {
CREATE,
ACCEPT,
REJECT,
CANCEL;
public MemberX500Name getInitiator(GameProposalState gameProposalState) {
switch (this) {
case CREATE:
case CANCEL:
return gameProposalState.getIssuer();
case ACCEPT:
case REJECT:
return gameProposalState.getAcquier();
default:
throw new RuntimeException(UNSUPPORTED_VALUE_OF + this.name());
}
}
public MemberX500Name getRespondent(GameProposalState gameProposalState) {
switch (this) {
case CREATE:
case CANCEL:
return gameProposalState.getAcquier();
case ACCEPT:
case REJECT:
return gameProposalState.getIssuer();
default:
throw new RuntimeException(UNSUPPORTED_VALUE_OF + this.name());
}
}
public MemberX500Name getInitiator(StateAndRef<GameProposalState> gameProposalSar) {
return getInitiator(gameProposalSar.getState().getContractState());
}
public MemberX500Name getRespondent(StateAndRef<GameProposalState> gameProposalSar) {
return getRespondent(gameProposalSar.getState().getContractState());
}
public static void validateCreateTrx(UtxoLedgerTransaction trx) {
requireThat(trx.getInputContractStates().isEmpty(), CREATE_INPUT_STATE);
requireThat(trx.getOutputContractStates().size() == 1, CREATE_OUTPUT_STATE);
GameProposalState outputState = getSingleOutputState(trx, GameProposalState.class);
requireThat(outputState.getAcquierColor() != null, NON_NULL_RECIPIENT_COLOR);
}
public static void validateAcceptTrx(UtxoLedgerTransaction trx) {
requireThat(trx.getInputContractStates().size() == 1, ACCEPT_INPUT_STATE);
requireThat(trx.getOutputContractStates().size() == 1, ACCEPT_OUTPUT_STATE);
GameProposalState inGameProposal = getSingleInputState(trx, GameProposalState.class);
GameBoardState outGameBoard = getSingleOutputState(trx, GameBoardState.class);
requireThat(outGameBoard.getParticipants().containsAll(inGameProposal.getParticipants()), ACCEPT_PARTICIPANTS);
}
public static void validateRejectTrx(UtxoLedgerTransaction trx) {
requireThat(trx.getInputContractStates().size() == 1, REJECT_INPUT_STATE);
requireThat(trx.getOutputContractStates().isEmpty(), REJECT_OUTPUT_STATE);
getSingleInputState(trx, GameProposalState.class);
}
public static void validateCancelTrx(UtxoLedgerTransaction trx) {
requireThat(trx.getInputContractStates().size() == 1, CANCEL_INPUT_STATE);
requireThat(trx.getOutputContractStates().isEmpty(), CANCEL_OUTPUT_STATE);
getSingleInputState(trx, GameProposalState.class);
}
public static final String UNSUPPORTED_VALUE_OF = "Unsupported GameProposalCommand value: ";
static final String CREATE_INPUT_STATE = "Create command should have no input states";
static final String CREATE_OUTPUT_STATE = "Create command should output exactly one GameProposal state";
static final String NON_NULL_RECIPIENT_COLOR = "GameProposal.recipientColor field can not be null";
static final String REJECT_INPUT_STATE = "Reject command should have exactly one GameProposal input state";
static final String REJECT_OUTPUT_STATE = "Reject command should have no output states";
static final String CANCEL_INPUT_STATE = "Cancel command should have exactly one GameProposal input state";
static final String CANCEL_OUTPUT_STATE = "Cancel command should have no output states";
static final String ACCEPT_INPUT_STATE = "Accept command should have exactly one GameProposal input state";
static final String ACCEPT_OUTPUT_STATE = "Accept command should have exactly one GameBoard output state";
static final String ACCEPT_PARTICIPANTS = "Accept command: GameBoard participants should math GameProposal participants";
}

35
corda/contracts/src/main/java/djmil/cordacheckers/contracts/GameProposalContract.java
View File

@ -1,14 +1,13 @@
package djmil.cordacheckers.contracts; package djmil.cordacheckers.contracts;
import static djmil.cordacheckers.contracts.GameCommand.requireThat;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleCommand;
import org.slf4j.Logger; import org.slf4j.Logger;
import org.slf4j.LoggerFactory; import org.slf4j.LoggerFactory;
import net.corda.v5.base.exceptions.CordaRuntimeException;
import net.corda.v5.ledger.utxo.transaction.UtxoLedgerTransaction; import net.corda.v5.ledger.utxo.transaction.UtxoLedgerTransaction;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleCommand;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.requireThat;
public class GameProposalContract implements net.corda.v5.ledger.utxo.Contract { public class GameProposalContract implements net.corda.v5.ledger.utxo.Contract {
private final static Logger log = LoggerFactory.getLogger(GameProposalContract.class); private final static Logger log = LoggerFactory.getLogger(GameProposalContract.class);
@ -17,31 +16,29 @@ public class GameProposalContract implements net.corda.v5.ledger.utxo.Contract {
public void verify(UtxoLedgerTransaction trx) { public void verify(UtxoLedgerTransaction trx) {
log.info("GameProposalContract.verify() called"); log.info("GameProposalContract.verify() called");
requireThat(trx.getCommands().size() == 1, REQUIRE_SINGLE_COMMAND); requireThat(trx.getCommands().size() == 1, GameCommand.REQUIRE_SINGLE_COMMAND);
final GameProposalCommand command = getSingleCommand(trx, GameProposalCommand.class); final GameCommand command = getSingleCommand(trx, GameCommand.class);
switch (command) { switch (command.action) {
case CREATE: case GAME_PROPOSAL_CREATE:
GameProposalCommand.validateCreateTrx(trx); GameCommand.validateGameProposalCreate(trx);
break; break;
case ACCEPT: case GAME_PROPOSAL_ACCEPT:
GameProposalCommand.validateAcceptTrx(trx); GameCommand.validateGameProposalAccept(trx);
break; break;
case REJECT: case GAME_PROPOSAL_REJECT:
GameProposalCommand.validateRejectTrx(trx); GameCommand.validateGameProposalReject(trx);
break; break;
case CANCEL: case GAME_PROPOSAL_CANCEL:
GameProposalCommand.validateCancelTrx(trx); GameCommand.validateGameProposalCancel(trx);
break; break;
default: default:
throw new CordaRuntimeException(UNKNOWN_COMMAND); throw new GameCommand.ActionException();
} }
} }
static final String REQUIRE_SINGLE_COMMAND = "Require a single command"; }
static final String UNKNOWN_COMMAND = "Unsupported command";
}

24
corda/contracts/src/main/java/djmil/cordacheckers/contracts/GameResultContract.java
View File

@ -1,15 +1,13 @@
package djmil.cordacheckers.contracts; package djmil.cordacheckers.contracts;
import static djmil.cordacheckers.contracts.GameCommand.requireThat;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleCommand; import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleCommand;
import org.slf4j.Logger; import org.slf4j.Logger;
import org.slf4j.LoggerFactory; import org.slf4j.LoggerFactory;
import net.corda.v5.base.exceptions.CordaRuntimeException;
import net.corda.v5.ledger.utxo.transaction.UtxoLedgerTransaction; import net.corda.v5.ledger.utxo.transaction.UtxoLedgerTransaction;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.requireThat;
public class GameResultContract implements net.corda.v5.ledger.utxo.Contract { public class GameResultContract implements net.corda.v5.ledger.utxo.Contract {
private final static Logger log = LoggerFactory.getLogger(GameResultContract.class); private final static Logger log = LoggerFactory.getLogger(GameResultContract.class);
@ -18,23 +16,21 @@ public class GameResultContract implements net.corda.v5.ledger.utxo.Contract {
public void verify(UtxoLedgerTransaction trx) { public void verify(UtxoLedgerTransaction trx) {
log.info("GameResultContract.verify() called"); log.info("GameResultContract.verify() called");
requireThat(trx.getCommands().size() == 1, REQUIRE_SINGLE_COMMAND); requireThat(trx.getCommands().size() == 1, GameCommand.REQUIRE_SINGLE_COMMAND);
final GameBoardCommand command = getSingleCommand(trx, GameBoardCommand.class); final GameCommand command = getSingleCommand(trx, GameCommand.class);
switch (command.getType()) { switch (command.action) {
case SURRENDER: case GAME_BOARD_SURRENDER:
GameBoardCommand.validateSurrenderTrx(trx); GameCommand.validateGameBoardSurrender(trx);
break; break;
case FINISH: case GAME_RESULT_CREATE:
GameBoardCommand.validateFinishTrx(trx); GameCommand.validateGameResultCreate(trx);
break; break;
default: default:
throw new CordaRuntimeException(UNKNOWN_COMMAND); throw new GameCommand.ActionException();
} }
} }
static final String REQUIRE_SINGLE_COMMAND = "Require a single command";
static final String UNKNOWN_COMMAND = "Unsupported command";
} }

59
corda/contracts/src/main/java/djmil/cordacheckers/contracts/UtxoLedgerTransactionUtil.java
View File

@ -3,53 +3,45 @@ package djmil.cordacheckers.contracts;
import java.util.List; import java.util.List;
import java.util.Optional; import java.util.Optional;
import net.corda.v5.ledger.utxo.Command; import djmil.cordacheckers.states.GameState;
import net.corda.v5.ledger.utxo.ContractState;
import net.corda.v5.ledger.utxo.StateAndRef;
import net.corda.v5.ledger.utxo.transaction.UtxoLedgerTransaction; import net.corda.v5.ledger.utxo.transaction.UtxoLedgerTransaction;
public class UtxoLedgerTransactionUtil { public class UtxoLedgerTransactionUtil {
public static <T extends Command> T getSingleCommand(UtxoLedgerTransaction utxoTrx, Class<T> clazz) { public static <T extends GameCommand> T getSingleCommand(UtxoLedgerTransaction utxoTrx, Class<T> clazz) {
return single(utxoTrx.getCommands(clazz), clazz); return single(utxoTrx.getCommands(clazz), clazz);
} }
public static <T extends ContractState> StateAndRef<T> getSingleReferenceSar(UtxoLedgerTransaction utxoTrx, Class<T> clazz) { // public static <T extends ContractState> StateAndRef<T> getSingleReferenceSar(UtxoLedgerTransaction utxoTrx, Class<T> clazz) {
return singleSar(utxoTrx.getReferenceStateAndRefs(clazz), clazz); // return singleSar(utxoTrx.getReferenceStateAndRefs(clazz), clazz);
} // }
public static <T extends ContractState> T getSingleInputState(UtxoLedgerTransaction utxoTrx, Class<T> clazz) { public static <T extends GameState> T getSingleInputState(UtxoLedgerTransaction utxoTrx, Class<T> clazz) {
return single(utxoTrx.getInputStates(clazz), clazz); return single(utxoTrx.getInputStates(clazz), clazz);
} }
public static <T extends ContractState> StateAndRef<T> getSingleInputSar(UtxoLedgerTransaction utxoTrx, Class<T> clazz) { // public static <T extends ContractState> StateAndRef<T> getSingleInputSar(UtxoLedgerTransaction utxoTrx, Class<T> clazz) {
return singleSar(utxoTrx.getInputStateAndRefs(clazz), clazz); // return singleSar(utxoTrx.getInputStateAndRefs(clazz), clazz);
} // }
public static <T extends ContractState> T getSingleOutputState(UtxoLedgerTransaction utxoTrx, Class<T> clazz) { public static <T extends GameState> T getSingleOutputState(UtxoLedgerTransaction utxoTrx, Class<T> clazz) {
return single(utxoTrx.getOutputStates(clazz), clazz); return single(utxoTrx.getOutputStates(clazz), clazz);
} }
public static <T extends Command> Optional<T> getOptionalCommand(UtxoLedgerTransaction utxoTrx, Class<T> clazz) { // public static <T extends Command> Optional<T> getOptionalCommand(UtxoLedgerTransaction utxoTrx, Class<T> clazz) {
return optional(utxoTrx.getCommands(clazz), clazz); // return optional(utxoTrx.getCommands(clazz), clazz);
} // }
public static <T extends ContractState> Optional<T> getOptionalReferenceState(UtxoLedgerTransaction utxoTrx, Class<T> clazz) { // public static <T extends ContractState> Optional<T> getOptionalReferenceState(UtxoLedgerTransaction utxoTrx, Class<T> clazz) {
return optional(utxoTrx.getReferenceStates(clazz), clazz); // return optional(utxoTrx.getReferenceStates(clazz), clazz);
} // }
public static <T extends ContractState> Optional<T> getOptionalInputState(UtxoLedgerTransaction utxoTrx, Class<T> clazz) { // public static <T extends ContractState> Optional<T> getOptionalInputState(UtxoLedgerTransaction utxoTrx, Class<T> clazz) {
return optional(utxoTrx.getInputStates(clazz), clazz); // return optional(utxoTrx.getInputStates(clazz), clazz);
} // }
public static <T extends ContractState> Optional<T> getOptionalOutputState(UtxoLedgerTransaction utxoTrx, Class<T> clazz) { // public static <T extends ContractState> Optional<T> getOptionalOutputState(UtxoLedgerTransaction utxoTrx, Class<T> clazz) {
return optional(utxoTrx.getOutputStates(clazz), clazz); // return optional(utxoTrx.getOutputStates(clazz), clazz);
} // }
public static void requireThat(boolean asserted, String errorMessage) {
if (!asserted) {
throw new IllegalStateException("Failed requirement: " + errorMessage);
}
}
private static <T> Optional<T> optional(List<T> list, Class<T> clazz) { private static <T> Optional<T> optional(List<T> list, Class<T> clazz) {
return list return list
@ -62,13 +54,6 @@ public class UtxoLedgerTransactionUtil {
.orElseThrow( () -> new IllegalStateException(NO_INSTANCES_OF +clazz.getName()) ); .orElseThrow( () -> new IllegalStateException(NO_INSTANCES_OF +clazz.getName()) );
} }
private static <T extends ContractState> StateAndRef<T> singleSar(List<StateAndRef<T>> list, Class<T> clazz) {
return list
.stream()
.reduce((a, b) -> {throw new IllegalStateException(MULTIPLE_INSTANCES_OF +clazz.getName());})
.orElseThrow( () -> new IllegalStateException(NO_INSTANCES_OF +clazz.getName()) );
}
private static String MULTIPLE_INSTANCES_OF = "Multiple instances of "; private static String MULTIPLE_INSTANCES_OF = "Multiple instances of ";
private static String NO_INSTANCES_OF = "No instances of "; private static String NO_INSTANCES_OF = "No instances of ";
} }

10
corda/contracts/src/main/java/djmil/cordacheckers/states/GameResultState.java
View File

@ -26,11 +26,11 @@ public class GameResultState extends GameState {
this.winnerColor = winnerColor; this.winnerColor = winnerColor;
} }
public GameResultState(GameBoardState gameBoardState, Piece.Color victoryColor) { public GameResultState(GameBoardState gameBoardState, MemberX500Name winnerName) {
super(gameBoardState.gameUuid, null, gameBoardState.participants); super(gameBoardState.gameUuid, null, gameBoardState.participants);
this.winnerName = gameBoardState.getWhitePlayerName(); this.opponentName = gameBoardState.getCounterpartyName(winnerName);
this.opponentName = gameBoardState.getBlackPlayerName(); this.winnerName = winnerName;
this.winnerColor = victoryColor; this.winnerColor = gameBoardState.getWhitePlayerName().compareTo(winnerName) == 0 ? Piece.Color.WHITE : Piece.Color.BLACK;
} }
public MemberX500Name getWinnerName() { public MemberX500Name getWinnerName() {
@ -57,7 +57,7 @@ public class GameResultState extends GameState {
} }
@Override @Override
MemberX500Name getWhitePlayerName() { public MemberX500Name getWhitePlayerName() {
return winnerColor == Piece.Color.WHITE ? winnerName : opponentName; return winnerColor == Piece.Color.WHITE ? winnerName : opponentName;
} }

6
corda/contracts/src/main/java/djmil/cordacheckers/states/GameState.java
View File

@ -17,10 +17,10 @@ public abstract class GameState implements ContractState {
final List<PublicKey> participants; final List<PublicKey> participants;
@NotNull @NotNull
abstract MemberX500Name getWhitePlayerName(); public abstract MemberX500Name getWhitePlayerName();
@NotNull @NotNull
abstract MemberX500Name getCounterpartyName(MemberX500Name myName) throws NotInvolved; public abstract MemberX500Name getCounterpartyName(MemberX500Name myName) throws NotInvolved;
GameState(UUID gameUuid, String message, List<PublicKey> participants) { GameState(UUID gameUuid, String message, List<PublicKey> participants) {
this.gameUuid = gameUuid; this.gameUuid = gameUuid;
@ -49,7 +49,7 @@ public abstract class GameState implements ContractState {
return getWhitePlayerName().compareTo(opponentName) == 0 ? Piece.Color.WHITE : Piece.Color.BLACK; return getWhitePlayerName().compareTo(opponentName) == 0 ? Piece.Color.WHITE : Piece.Color.BLACK;
} }
public static class NotInvolved extends RuntimeException { public static class NotInvolved extends RuntimeException {
public <T> NotInvolved(MemberX500Name name, Class<T> clazz, UUID uuid) { public <T> NotInvolved(MemberX500Name name, Class<T> clazz, UUID uuid) {
super(name +" is not involved in " +clazz.getSimpleName() +" UUID " +uuid); super(name +" is not involved in " +clazz.getSimpleName() +" UUID " +uuid);

198
corda/workflows/src/main/java/djmil/cordacheckers/gameboard/CommandFlow.java
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@ -1,198 +0,0 @@
package djmil.cordacheckers.gameboard;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleCommand;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleOutputState;
import java.time.Duration;
import java.time.Instant;
import java.util.Arrays;
import java.util.List;
import java.util.UUID;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import djmil.cordacheckers.FlowResult;
import djmil.cordacheckers.contracts.GameBoardCommand;
import djmil.cordacheckers.contracts.GameBoardCommand.CommandTypeException;
import djmil.cordacheckers.gameresult.GameResultView;
import djmil.cordacheckers.states.GameBoardState;
import djmil.cordacheckers.states.GameResultState;
import djmil.cordacheckers.states.Piece;
import net.corda.v5.application.flows.ClientRequestBody;
import net.corda.v5.application.flows.ClientStartableFlow;
import net.corda.v5.application.flows.CordaInject;
import net.corda.v5.application.flows.InitiatingFlow;
import net.corda.v5.application.marshalling.JsonMarshallingService;
import net.corda.v5.application.membership.MemberLookup;
import net.corda.v5.application.messaging.FlowMessaging;
import net.corda.v5.application.messaging.FlowSession;
import net.corda.v5.base.annotations.Suspendable;
import net.corda.v5.base.types.MemberX500Name;
import net.corda.v5.crypto.SecureHash;
import net.corda.v5.ledger.utxo.StateAndRef;
import net.corda.v5.ledger.utxo.UtxoLedgerService;
import net.corda.v5.ledger.utxo.transaction.UtxoLedgerTransaction;
import net.corda.v5.ledger.utxo.transaction.UtxoSignedTransaction;
import net.corda.v5.ledger.utxo.transaction.UtxoTransactionBuilder;
@InitiatingFlow(protocol = "game-board")
public class CommandFlow implements ClientStartableFlow {
private final static Logger log = LoggerFactory.getLogger(CommandFlow.class);
@CordaInject
public JsonMarshallingService jsonMarshallingService;
@CordaInject
public UtxoLedgerService utxoLedgerService;
@CordaInject
public MemberLookup memberLookup;
@CordaInject
public FlowMessaging flowMessaging;
@Override
@Suspendable
public String call(ClientRequestBody requestBody) {
log.info("GameBoardCommandFlow started");
try {
final CommandFlowArgs args = requestBody.getRequestBodyAs(jsonMarshallingService, CommandFlowArgs.class);
final StateAndRef<GameBoardState> utxoSarGameBoard = findUtxoGameBoard(args.getGameBoardUuid());
final SecureHash trxId = doTransaction(args.getCommand(), utxoSarGameBoard);
final Object trxResult = getTrxResult(trxId);
return new FlowResult(trxResult, trxId)
.toJsonEncodedString(jsonMarshallingService);
}
catch (Exception e) {
log.warn("GameProposalAction flow failed to process utxo request body " + requestBody +
" because: " + e.getMessage());
return new FlowResult(e).toJsonEncodedString(jsonMarshallingService);
}
}
@Suspendable
StateAndRef<GameBoardState> findUtxoGameBoard (UUID gameBoardUuid) {
/*
* Get list of all unconsumed aka 'active' GameProposalStates, then filter by UUID.
* Note, this is an inefficient way to perform this operation if there are a large
* number of 'active' GameProposals exists in storage.
*/
return this.utxoLedgerService
.findUnconsumedStatesByType(GameBoardState.class)
.stream()
.filter(sar -> sar.getState().getContractState().getGameUuid().equals(gameBoardUuid))
.reduce((a, b) -> {throw new IllegalStateException("Multiple states: " +a +", " +b);})
.get();
}
@Suspendable
SecureHash doTransaction(
GameBoardCommand command,
StateAndRef<GameBoardState> utxoSarGameBoard
) {
final GameBoardState stateGameBoard = utxoSarGameBoard.getState().getContractState();
final MemberX500Name myName = memberLookup.myInfo().getName();
final MemberX500Name opponentName = stateGameBoard.getCounterpartyName(myName);
UtxoTransactionBuilder trxBuilder = utxoLedgerService.createTransactionBuilder()
.setNotary(utxoSarGameBoard.getState().getNotaryName())
.setTimeWindowBetween(Instant.now(), Instant.now().plusMillis(Duration.ofDays(1).toMillis()))
.addCommand(command)
.addInputState(utxoSarGameBoard.getRef())
.addSignatories(stateGameBoard.getParticipants());
switch (command.getType()) {
case SURRENDER:
trxBuilder = trxBuilder
.addOutputState( new GameResultState(
stateGameBoard,
stateGameBoard.getCounterpartyColor(myName)) // winner color
);
break;
case MOVE:
trxBuilder = trxBuilder
.addOutputState( new GameBoardState(stateGameBoard, stateGameBoard.getBoard(), stateGameBoard.getMoveColor())); // TODO: advance color
break;
case FINISH:
throw new CommandTypeException("GameBoard.CommandFlow can not process externaly issued FINISH commnd");
default:
throw new CommandTypeException("GameBoard.CommandFlow doTransaction(): Unknown command");
}
return commit(
trxBuilder.toSignedTransaction(),
opponentName);
}
@Suspendable
SecureHash commit(UtxoSignedTransaction candidateTrx, MemberX500Name counterpartyName) {
log.info("About to commit " +candidateTrx.getId());
final FlowSession session = flowMessaging.initiateFlow(counterpartyName);
/*
* Calls the Corda provided finalise() function which gather signatures from the counterparty,
* notarises the transaction and persists the transaction to each party's vault.
*/
final List<FlowSession> sessionsList = Arrays.asList(session);
final SecureHash trxId = utxoLedgerService
.finalize(candidateTrx, sessionsList)
.getTransaction()
.getId();
log.info("GameBoard utxo trx id " +trxId);
return trxId;
}
@Suspendable
Object getTrxResult(SecureHash trxId) {
final UtxoLedgerTransaction utxoTrx = utxoLedgerService
.findLedgerTransaction(trxId);
final var command = getSingleCommand(utxoTrx, GameBoardCommand.class);
switch (command.getType()) {
case SURRENDER:
return viewGameResult(utxoTrx);
case MOVE:
// 1. create initial GameBoardView
// 2. check for winning conditions
// - run subcommnd FINISH that will consume current gbUtxo and will produce GameResult state
// - update GameBoardView to have FINISH command
// 3. return GameBoardView
return viewGameBoard(utxoTrx);
case FINISH:
return viewGameBoard(utxoTrx);
default:
throw new CommandTypeException();
}
}
@Suspendable
GameResultView viewGameResult(UtxoLedgerTransaction utxoGameResult) {
final GameResultState grState = getSingleOutputState(utxoGameResult, GameResultState.class);
return new GameResultView(grState);
}
@Suspendable
GameBoardView viewGameBoard(UtxoLedgerTransaction utxoGameBoard) {
final MemberX500Name myName = memberLookup.myInfo().getName();
return new GameBoardView(utxoGameBoard, myName);
}
}

24
corda/workflows/src/main/java/djmil/cordacheckers/gameboard/CommandFlowArgs.java
View File

@ -1,24 +0,0 @@
package djmil.cordacheckers.gameboard;
import java.util.UUID;
import djmil.cordacheckers.contracts.GameBoardCommand;
public class CommandFlowArgs {
private UUID gameBoardUuid;
private GameBoardCommand command;
// Serialisation service requires a default constructor
public CommandFlowArgs() {
this.gameBoardUuid = null;
this.command = null;
}
public GameBoardCommand getCommand() {
return this.command;
}
public UUID getGameBoardUuid() {
return this.gameBoardUuid;
}
}

91
corda/workflows/src/main/java/djmil/cordacheckers/gameboard/CommandResponderFlow.java
View File

@ -1,91 +0,0 @@
package djmil.cordacheckers.gameboard;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleCommand;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleInputState;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleOutputState;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import djmil.cordacheckers.contracts.GameBoardCommand;
import djmil.cordacheckers.contracts.GameBoardCommand.CommandTypeException;
import djmil.cordacheckers.states.GameBoardState;
import net.corda.v5.application.flows.CordaInject;
import net.corda.v5.application.flows.InitiatedBy;
import net.corda.v5.application.flows.ResponderFlow;
import net.corda.v5.application.membership.MemberLookup;
import net.corda.v5.application.messaging.FlowSession;
import net.corda.v5.base.annotations.Suspendable;
import net.corda.v5.base.exceptions.CordaRuntimeException;
import net.corda.v5.ledger.utxo.UtxoLedgerService;
import net.corda.v5.ledger.utxo.transaction.UtxoLedgerTransaction;
import net.corda.v5.ledger.utxo.transaction.UtxoSignedTransaction;
import net.corda.v5.ledger.utxo.transaction.UtxoTransactionValidator;
@InitiatedBy(protocol = "game-board")
public class CommandResponderFlow implements ResponderFlow {
private final static Logger log = LoggerFactory.getLogger(CommandResponderFlow.class);
@CordaInject
public MemberLookup memberLookup;
@CordaInject
public UtxoLedgerService utxoLedgerService;
@Suspendable
@Override
public void call(FlowSession session) {
try {
UtxoTransactionValidator txValidator = utxoGameBoard -> {
final var command = getSingleCommand(utxoGameBoard, GameBoardCommand.class);
final var stateGameBoard = getGameBoardState(utxoGameBoard, command);
checkParticipants(session, stateGameBoard, command);
/*
* Other checks / actions ?
*/
log.info("Verified the transaction - " + utxoGameBoard.getId());
};
UtxoSignedTransaction finalizedSignedTransaction = utxoLedgerService
.receiveFinality(session, txValidator)
.getTransaction();
log.info("Finished responder flow - " + finalizedSignedTransaction.getId());
}
catch(Exception e) {
log.warn("Responder flow failed: ", e);
}
}
@Suspendable
GameBoardState getGameBoardState(UtxoLedgerTransaction utxoGameBoard, GameBoardCommand command) {
switch (command.getType()) {
case SURRENDER:
case FINISH:
return getSingleInputState(utxoGameBoard, GameBoardState.class);
case MOVE:
return getSingleOutputState(utxoGameBoard, GameBoardState.class);
default:
throw new CommandTypeException();
}
}
@Suspendable
void checkParticipants(FlowSession session, GameBoardState stateGameBoard, GameBoardCommand command) {
final var myName = memberLookup.myInfo().getName();
final var counterpartyName = session.getCounterparty();
if (command.getRespondent(stateGameBoard).compareTo(myName) != 0)
throw new CordaRuntimeException("Bad respondent");
if (command.getInitiator(stateGameBoard).compareTo(counterpartyName) !=0)
throw new CordaRuntimeException("Bad initiator");
}
}

68
corda/workflows/src/main/java/djmil/cordacheckers/gameboard/GameBoardView.java
View File

@ -1,68 +0,0 @@
package djmil.cordacheckers.gameboard;
import java.util.Map;
import java.util.UUID;
import djmil.cordacheckers.contracts.GameBoardCommand;
import djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil;
import djmil.cordacheckers.states.GameState.NotInvolved;
import djmil.cordacheckers.states.GameBoardState;
import djmil.cordacheckers.states.Piece;
import net.corda.v5.base.types.MemberX500Name;
import net.corda.v5.ledger.utxo.transaction.UtxoLedgerTransaction;
// GameBoard from the player's point of view
public class GameBoardView {
public final String opponentName;
public final Piece.Color opponentColor;
public final Boolean opponentMove;
public final Integer moveNumber;
public final Map<Integer, Piece> board;
public final GameBoardCommand previousCommand;
public final String message;
public final UUID gameUuid;
/*
* GameStatus enum:
* - YOUR_TURN
* - WAIT_FOR_OPPONENT
* - VICTORY
* - YOU_LOOSE
*/
// Serialisation service requires a default constructor
public GameBoardView() {
this.opponentName = null;
this.opponentColor = null;
this.opponentMove = null;
this.moveNumber = null;
this.board = null;
this.previousCommand = null;
this.message = null;
this.gameUuid = null;
}
// A view from a perspective of a concrete player, on a ledger transaction that has
// produced new GameBoardState
public GameBoardView(UtxoLedgerTransaction utxoGameBoard, MemberX500Name myName) throws NotInvolved {
// TODO check command type: MOVE vs FINNISH | SURRENDER
// SingleOutPut vs SingleInput
this.previousCommand = UtxoLedgerTransactionUtil
.getOptionalCommand(utxoGameBoard, GameBoardCommand.class)
.orElseGet(() -> null); // there is no previous command for GameProposal.Accept case
final GameBoardState stateGameBoard = UtxoLedgerTransactionUtil
.getSingleOutputState(utxoGameBoard, GameBoardState.class);
this.opponentName = stateGameBoard.getCounterpartyName(myName).getCommonName();
this.opponentColor = stateGameBoard.getCounterpartyColor(myName);
this.opponentMove = this.opponentColor == stateGameBoard.getMoveColor();
this.moveNumber = stateGameBoard.getMoveNumber();
this.board = stateGameBoard.getBoard();
this.message = stateGameBoard.getMessage();
this.gameUuid = stateGameBoard.getGameUuid();
}
}

83
corda/workflows/src/main/java/djmil/cordacheckers/gameboard/ListFlow.java
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@ -1,83 +0,0 @@
package djmil.cordacheckers.gameboard;
import java.util.LinkedList;
import java.util.List;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import djmil.cordacheckers.FlowResult;
import djmil.cordacheckers.states.GameBoardState;
import djmil.cordacheckers.states.GameState.NotInvolved;
import net.corda.v5.application.flows.ClientRequestBody;
import net.corda.v5.application.flows.ClientStartableFlow;
import net.corda.v5.application.flows.CordaInject;
import net.corda.v5.application.marshalling.JsonMarshallingService;
import net.corda.v5.application.membership.MemberLookup;
import net.corda.v5.base.annotations.Suspendable;
import net.corda.v5.base.types.MemberX500Name;
import net.corda.v5.crypto.SecureHash;
import net.corda.v5.ledger.utxo.StateAndRef;
import net.corda.v5.ledger.utxo.UtxoLedgerService;
import net.corda.v5.ledger.utxo.transaction.UtxoLedgerTransaction;
public class ListFlow implements ClientStartableFlow {
private final static Logger log = LoggerFactory.getLogger(ListFlow.class);
@CordaInject
public MemberLookup memberLookup;
@CordaInject
public UtxoLedgerService utxoLedgerService;
@CordaInject
public JsonMarshallingService jsonMarshallingService;
@Suspendable
@Override
public String call(ClientRequestBody requestBody) {
try {
final var utxoGameBoardList = utxoLedgerService
.findUnconsumedStatesByType(GameBoardState.class);
// NOTE: lambda operations (aka .map) can not be used with UtxoLedgerService instances
final List<GameBoardView> res = prepareGameBoardViewList(utxoGameBoardList);
return new FlowResult(res)
.toJsonEncodedString(jsonMarshallingService);
}
catch (Exception e) {
log.warn("GameBoard.ListFlow failed to process utxo request body " + requestBody + " because: " + e.getMessage());
return new FlowResult(e).toJsonEncodedString(jsonMarshallingService);
}
}
@Suspendable
private List<GameBoardView> prepareGameBoardViewList(List<StateAndRef<GameBoardState>> utxoGamaBoardList) {
final MemberX500Name myName = memberLookup.myInfo().getName();
List<GameBoardView> res = new LinkedList<GameBoardView>();
for (StateAndRef<GameBoardState> sarGameBoard :utxoGamaBoardList) {
try {
res.add(prepareGameBoardView(sarGameBoard, myName));
} catch (NotInvolved e) {
log.warn(e.getMessage());
}
}
return res;
}
@Suspendable
private GameBoardView prepareGameBoardView(StateAndRef<GameBoardState> sarGameBoard, MemberX500Name myName) throws NotInvolved {
final SecureHash trxId = sarGameBoard.getRef().getTransactionId();
final UtxoLedgerTransaction utxoGameBoard = utxoLedgerService
.findLedgerTransaction(trxId);
return new GameBoardView(utxoGameBoard, myName);
}
}

104
corda/workflows/src/main/java/djmil/cordacheckers/gameboard/SurrenderFlow.java Normal file
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@ -0,0 +1,104 @@
package djmil.cordacheckers.gameboard;
import java.time.Duration;
import java.time.Instant;
import java.util.UUID;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import djmil.cordacheckers.contracts.GameCommand;
import djmil.cordacheckers.gamestate.CommitSubFlow;
import djmil.cordacheckers.gamestate.FlowResponce;
import djmil.cordacheckers.gamestate.GetFlow;
import djmil.cordacheckers.gamestate.View;
import djmil.cordacheckers.gamestate.ViewBuilder;
import djmil.cordacheckers.states.GameBoardState;
import djmil.cordacheckers.states.GameResultState;
import djmil.cordacheckers.states.GameState;
import net.corda.v5.application.flows.ClientRequestBody;
import net.corda.v5.application.flows.ClientStartableFlow;
import net.corda.v5.application.flows.CordaInject;
import net.corda.v5.application.flows.FlowEngine;
import net.corda.v5.application.marshalling.JsonMarshallingService;
import net.corda.v5.application.membership.MemberLookup;
import net.corda.v5.base.annotations.Suspendable;
import net.corda.v5.base.types.MemberX500Name;
import net.corda.v5.crypto.SecureHash;
import net.corda.v5.ledger.common.NotaryLookup;
import net.corda.v5.ledger.utxo.StateAndRef;
import net.corda.v5.ledger.utxo.UtxoLedgerService;
import net.corda.v5.ledger.utxo.transaction.UtxoSignedTransaction;
public class SurrenderFlow implements ClientStartableFlow{
private final static Logger log = LoggerFactory.getLogger(SurrenderFlow.class);
@CordaInject
public JsonMarshallingService jsonMarshallingService;
@CordaInject
public MemberLookup memberLookup;
@CordaInject
public NotaryLookup notaryLookup;
@CordaInject
public UtxoLedgerService utxoLedgerService;
@CordaInject
public FlowEngine flowEngine;
@Suspendable
@Override
public String call(ClientRequestBody requestBody) {
SecureHash gameStateUtxoTrxId = null;
try {
final GameCommand command = new GameCommand(GameCommand.Action.GAME_BOARD_SURRENDER);
final UUID gameStateUuid = UUID.fromString(requestBody.getRequestBody());
final StateAndRef<GameState> inputStateSar = this.flowEngine
.subFlow(new GetFlow(gameStateUuid));
final GameResultState outputState = prepareGameResultState(inputStateSar);
final UtxoSignedTransaction transactionCandidate = utxoLedgerService.createTransactionBuilder()
.addCommand(command)
.addInputState(inputStateSar.getRef())
.addOutputState(outputState)
.addSignatories(outputState.getParticipants())
.setNotary(inputStateSar.getState().getNotaryName())
.setTimeWindowUntil(Instant.now().plusMillis(Duration.ofDays(1).toMillis()))
.toSignedTransaction();
gameStateUtxoTrxId = this.flowEngine
.subFlow(new CommitSubFlow(transactionCandidate, command.getObserver(outputState)));
final View gameStateView = this.flowEngine
.subFlow(new ViewBuilder(gameStateUtxoTrxId));
return new FlowResponce(gameStateView, gameStateUtxoTrxId)
.toJsonEncodedString(jsonMarshallingService);
}
catch (Exception e) {
log.warn("Exception during processing " + requestBody + " request: " + e.getMessage());
e.printStackTrace(System.out);
return new FlowResponce(e, gameStateUtxoTrxId)
.toJsonEncodedString(jsonMarshallingService);
}
}
@Suspendable
GameResultState prepareGameResultState(StateAndRef<GameState> gameStateSar) {
final GameState gameState = gameStateSar.getState().getContractState();
final GameBoardState gameBoard = (GameBoardState) gameState;
final MemberX500Name myName = memberLookup.myInfo().getName();
final MemberX500Name winnerName = gameBoard.getCounterpartyName(myName);
return new GameResultState(gameBoard, winnerName);
}
}

84
corda/workflows/src/main/java/djmil/cordacheckers/gameproposal/AcceptFlow.java Normal file
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@ -0,0 +1,84 @@
package djmil.cordacheckers.gameproposal;
import java.time.Duration;
import java.time.Instant;
import java.util.UUID;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import djmil.cordacheckers.contracts.GameCommand;
import djmil.cordacheckers.gamestate.CommitSubFlow;
import djmil.cordacheckers.gamestate.FlowResponce;
import djmil.cordacheckers.gamestate.GetFlow;
import djmil.cordacheckers.gamestate.View;
import djmil.cordacheckers.gamestate.ViewBuilder;
import djmil.cordacheckers.states.GameBoardState;
import djmil.cordacheckers.states.GameProposalState;
import djmil.cordacheckers.states.GameState;
import net.corda.v5.application.flows.ClientRequestBody;
import net.corda.v5.application.flows.ClientStartableFlow;
import net.corda.v5.application.flows.CordaInject;
import net.corda.v5.application.flows.FlowEngine;
import net.corda.v5.application.marshalling.JsonMarshallingService;
import net.corda.v5.base.annotations.Suspendable;
import net.corda.v5.crypto.SecureHash;
import net.corda.v5.ledger.utxo.StateAndRef;
import net.corda.v5.ledger.utxo.UtxoLedgerService;
import net.corda.v5.ledger.utxo.transaction.UtxoSignedTransaction;
public class AcceptFlow implements ClientStartableFlow{
private final static Logger log = LoggerFactory.getLogger(AcceptFlow.class);
@CordaInject
public JsonMarshallingService jsonMarshallingService;
@CordaInject
public UtxoLedgerService utxoLedgerService;
@CordaInject
public FlowEngine flowEngine;
@Suspendable
@Override
public String call(ClientRequestBody requestBody) {
SecureHash gameStateUtxoTrxId = null;
try {
final GameCommand command = new GameCommand(GameCommand.Action.GAME_PROPOSAL_ACCEPT);
final UUID gameStateUuid = UUID.fromString(requestBody.getRequestBody());
final StateAndRef<GameState> inputState = this.flowEngine
.subFlow(new GetFlow(gameStateUuid));
final GameBoardState outputState = new GameBoardState((GameProposalState)inputState.getState().getContractState());
final UtxoSignedTransaction gameStateRejectTrx = utxoLedgerService.createTransactionBuilder()
.addCommand(command)
.addInputState(inputState.getRef())
.addOutputState(outputState)
.addSignatories(inputState.getState().getContractState().getParticipants())
.setNotary(inputState.getState().getNotaryName())
.setTimeWindowUntil(Instant.now().plusMillis(Duration.ofDays(1).toMillis()))
.toSignedTransaction();
gameStateUtxoTrxId = this.flowEngine
.subFlow(new CommitSubFlow(gameStateRejectTrx, command.getObserver(inputState)));
final View gameStateView = this.flowEngine
.subFlow(new ViewBuilder(gameStateUtxoTrxId));
return new FlowResponce(gameStateView, gameStateUtxoTrxId)
.toJsonEncodedString(jsonMarshallingService);
}
catch (Exception e) {
log.warn("Exception during processing " + requestBody + " request: " + e.getMessage());
e.printStackTrace(System.out);
return new FlowResponce(e, gameStateUtxoTrxId)
.toJsonEncodedString(jsonMarshallingService);
}
}
}

78
corda/workflows/src/main/java/djmil/cordacheckers/gameproposal/CancelFlow.java Normal file
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@ -0,0 +1,78 @@
package djmil.cordacheckers.gameproposal;
import java.time.Duration;
import java.time.Instant;
import java.util.UUID;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import djmil.cordacheckers.contracts.GameCommand;
import djmil.cordacheckers.gamestate.CommitSubFlow;
import djmil.cordacheckers.gamestate.FlowResponce;
import djmil.cordacheckers.gamestate.GetFlow;
import djmil.cordacheckers.gamestate.View;
import djmil.cordacheckers.gamestate.ViewBuilder;
import djmil.cordacheckers.states.GameState;
import net.corda.v5.application.flows.ClientRequestBody;
import net.corda.v5.application.flows.ClientStartableFlow;
import net.corda.v5.application.flows.CordaInject;
import net.corda.v5.application.flows.FlowEngine;
import net.corda.v5.application.marshalling.JsonMarshallingService;
import net.corda.v5.base.annotations.Suspendable;
import net.corda.v5.crypto.SecureHash;
import net.corda.v5.ledger.utxo.StateAndRef;
import net.corda.v5.ledger.utxo.UtxoLedgerService;
import net.corda.v5.ledger.utxo.transaction.UtxoSignedTransaction;
public class CancelFlow implements ClientStartableFlow{
private final static Logger log = LoggerFactory.getLogger(CancelFlow.class);
@CordaInject
public JsonMarshallingService jsonMarshallingService;
@CordaInject
public UtxoLedgerService utxoLedgerService;
@CordaInject
public FlowEngine flowEngine;
@Suspendable
@Override
public String call(ClientRequestBody requestBody) {
SecureHash gameStateUtxoTrxId = null;
try {
final GameCommand command = new GameCommand(GameCommand.Action.GAME_PROPOSAL_CANCEL);
final UUID gameStateUuid = UUID.fromString(requestBody.getRequestBody());
final StateAndRef<GameState> inputState = this.flowEngine
.subFlow(new GetFlow(gameStateUuid));
final UtxoSignedTransaction gameStateRejectTrx = utxoLedgerService.createTransactionBuilder()
.addCommand(command)
.addInputState(inputState.getRef())
.addSignatories(inputState.getState().getContractState().getParticipants())
.setNotary(inputState.getState().getNotaryName())
.setTimeWindowUntil(Instant.now().plusMillis(Duration.ofDays(1).toMillis()))
.toSignedTransaction();
gameStateUtxoTrxId = this.flowEngine
.subFlow(new CommitSubFlow(gameStateRejectTrx, command.getObserver(inputState)));
final View gameStateView = this.flowEngine
.subFlow(new ViewBuilder(gameStateUtxoTrxId));
return new FlowResponce(gameStateView, gameStateUtxoTrxId)
.toJsonEncodedString(jsonMarshallingService);
}
catch (Exception e) {
log.warn("Exception during processing " + requestBody + " request: " + e.getMessage());
return new FlowResponce(e, gameStateUtxoTrxId)
.toJsonEncodedString(jsonMarshallingService);
}
}
}

124
corda/workflows/src/main/java/djmil/cordacheckers/gameproposal/CommandFlow.java
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@ -1,124 +0,0 @@
package djmil.cordacheckers.gameproposal;
import java.util.UUID;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import djmil.cordacheckers.FlowResult;
import djmil.cordacheckers.contracts.GameProposalCommand;
import djmil.cordacheckers.gameboard.GameBoardView;
import djmil.cordacheckers.states.GameBoardState;
import djmil.cordacheckers.states.GameProposalState;
import djmil.cordacheckers.states.GameState.NotInvolved;
import net.corda.v5.application.flows.ClientRequestBody;
import net.corda.v5.application.flows.ClientStartableFlow;
import net.corda.v5.application.flows.CordaInject;
import net.corda.v5.application.flows.FlowEngine;
import net.corda.v5.application.marshalling.JsonMarshallingService;
import net.corda.v5.application.membership.MemberLookup;
import net.corda.v5.base.annotations.Suspendable;
import net.corda.v5.base.types.MemberX500Name;
import net.corda.v5.crypto.SecureHash;
import net.corda.v5.ledger.utxo.StateAndRef;
import net.corda.v5.ledger.utxo.UtxoLedgerService;
import net.corda.v5.ledger.utxo.transaction.UtxoLedgerTransaction;
import net.corda.v5.ledger.utxo.transaction.UtxoSignedTransaction;
import net.corda.v5.ledger.utxo.transaction.UtxoTransactionBuilder;
import java.time.Duration;
import java.time.Instant;
public class CommandFlow implements ClientStartableFlow {
private final static Logger log = LoggerFactory.getLogger(CommandFlow.class);
@CordaInject
public JsonMarshallingService jsonMarshallingService;
@CordaInject
public UtxoLedgerService utxoLedgerService;
@CordaInject
public FlowEngine flowEngine;
@CordaInject
public MemberLookup memberLookup;
@Override
@Suspendable
public String call(ClientRequestBody requestBody) {
try {
final CommandFlowArgs args = requestBody.getRequestBodyAs(jsonMarshallingService, CommandFlowArgs.class);
final GameProposalCommand command = args.getCommand();
final StateAndRef<GameProposalState> utxoSarGameProposal = findUtxoGameProposal(args.getGameProposalUuid());
final UtxoSignedTransaction utxoDraft = prepareSignedTransaction(command, utxoSarGameProposal);
final SecureHash utxoTrxId = this.flowEngine
.subFlow( new CommitSubFlow(utxoDraft, command.getRespondent(utxoSarGameProposal)) );
if (command == GameProposalCommand.ACCEPT) {
final GameBoardView viewGameBoard = prepareGameBoardView(utxoTrxId);
return new FlowResult(viewGameBoard, utxoTrxId)
.toJsonEncodedString(jsonMarshallingService);
}
return new FlowResult(command+"ED", utxoTrxId) // REJECT+ED
.toJsonEncodedString(jsonMarshallingService);
}
catch (Exception e) {
log.warn("GameProposalAction flow failed to process utxo request body " + requestBody +
" because: " + e.getMessage());
return new FlowResult(e).toJsonEncodedString(jsonMarshallingService);
}
}
@Suspendable
private StateAndRef<GameProposalState> findUtxoGameProposal (UUID uuidGameProposal) {
/*
* Get list of all unconsumed aka 'active' GameProposalStates, then filter by UUID.
* Note, this is an inefficient way to perform this operation if there are a large
* number of 'active' GameProposals exists in storage.
*/
return this.utxoLedgerService
.findUnconsumedStatesByType(GameProposalState.class)
.stream()
.filter(sar -> sar.getState().getContractState().getGameUuid().equals(uuidGameProposal))
.reduce((a, b) -> {throw new IllegalStateException("Multiple states: " +a +", " +b);})
.get();
}
@Suspendable
private UtxoSignedTransaction prepareSignedTransaction(
GameProposalCommand command,
StateAndRef<GameProposalState> sarGameProposal
) {
UtxoTransactionBuilder trxBuilder = utxoLedgerService.createTransactionBuilder()
.setNotary(sarGameProposal.getState().getNotaryName())
.setTimeWindowBetween(Instant.now(), Instant.now().plusMillis(Duration.ofDays(1).toMillis()))
.addInputState(sarGameProposal.getRef())
.addCommand(command)
.addSignatories(sarGameProposal.getState().getContractState().getParticipants());
if (command == GameProposalCommand.ACCEPT) {
trxBuilder = trxBuilder
.addOutputState(new GameBoardState(sarGameProposal.getState().getContractState()));
}
return trxBuilder.toSignedTransaction();
}
@Suspendable
private GameBoardView prepareGameBoardView(SecureHash utxoTrxId) throws NotInvolved {
final MemberX500Name myName = memberLookup.myInfo().getName();
final UtxoLedgerTransaction utxoGameBoard = utxoLedgerService
.findLedgerTransaction(utxoTrxId);
return new GameBoardView(utxoGameBoard, myName);
}
}

24
corda/workflows/src/main/java/djmil/cordacheckers/gameproposal/CommandFlowArgs.java
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@ -1,24 +0,0 @@
package djmil.cordacheckers.gameproposal;
import java.util.UUID;
import djmil.cordacheckers.contracts.GameProposalCommand;
public class CommandFlowArgs {
private UUID gameProposalUuid;
private String command;
// Serialisation service requires a default constructor
public CommandFlowArgs() {
this.gameProposalUuid = null;
this.command = null;
}
public GameProposalCommand getCommand() {
return GameProposalCommand.valueOf(this.command);
}
public UUID getGameProposalUuid() {
return this.gameProposalUuid;
}
}

98
corda/workflows/src/main/java/djmil/cordacheckers/gameproposal/CommitResponderFlow.java
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@ -1,98 +0,0 @@
package djmil.cordacheckers.gameproposal;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import djmil.cordacheckers.contracts.GameProposalCommand;
import djmil.cordacheckers.states.GameProposalState;
import net.corda.v5.application.flows.CordaInject;
import net.corda.v5.application.flows.InitiatedBy;
import net.corda.v5.application.flows.ResponderFlow;
import net.corda.v5.application.membership.MemberLookup;
import net.corda.v5.application.messaging.FlowSession;
import net.corda.v5.base.annotations.Suspendable;
import net.corda.v5.base.exceptions.CordaRuntimeException;
import net.corda.v5.base.types.MemberX500Name;
import net.corda.v5.ledger.utxo.UtxoLedgerService;
import net.corda.v5.ledger.utxo.transaction.UtxoLedgerTransaction;
import net.corda.v5.ledger.utxo.transaction.UtxoSignedTransaction;
import net.corda.v5.ledger.utxo.transaction.UtxoTransactionValidator;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleCommand;
@InitiatedBy(protocol = "game-proposal")
public class CommitResponderFlow implements ResponderFlow {
private final static Logger log = LoggerFactory.getLogger(CommitResponderFlow.class);
@CordaInject
public MemberLookup memberLookup;
@CordaInject
public UtxoLedgerService utxoLedgerService;
@Suspendable
@Override
public void call(FlowSession session) {
log.info("GameProposal: Commit responder flow");
try {
UtxoTransactionValidator txValidator = ledgerTransaction -> {
final GameProposalCommand command = ledgerTransaction.getCommands(GameProposalCommand.class).get(0);
final GameProposalState gameProposal = getGameProposal(ledgerTransaction);
checkParticipants(session, gameProposal, command);
/*
* Other checks / actions ?
*/
log.info("Verified the transaction - " + ledgerTransaction.getId());
};
UtxoSignedTransaction finalizedSignedTransaction = utxoLedgerService
.receiveFinality(session, txValidator)
.getTransaction();
log.info("Finished responder flow - " + finalizedSignedTransaction.getId());
}
catch(Exception e) {
log.warn("Responder flow failed: ", e);
}
}
@Suspendable
void checkParticipants(
FlowSession session,
GameProposalState gameProposal,
GameProposalCommand command
) {
final MemberX500Name myName = memberLookup.myInfo().getName();
final MemberX500Name otherName = session.getCounterparty();
if (command.getRespondent(gameProposal).compareTo(myName) != 0)
throw new CordaRuntimeException("Bad GameProposal acquirer: expected '"+myName+"', actual '" +gameProposal.getAcquier() +"'");
if (command.getInitiator(gameProposal).compareTo(otherName) != 0)
throw new CordaRuntimeException("Bad GameProposal issuer: expected '"+otherName+"', actual '"+gameProposal.getIssuer()+"'");
}
@Suspendable
GameProposalState getGameProposal(UtxoLedgerTransaction trx) {
final GameProposalCommand command = trx.getCommands(GameProposalCommand.class).get(0);
switch (command) {
case CREATE:
return (GameProposalState)trx.getOutputContractStates().get(0);
case ACCEPT:
case REJECT:
case CANCEL:
return (GameProposalState)trx.getInputContractStates().get(0);
default:
throw new RuntimeException(GameProposalCommand.UNSUPPORTED_VALUE_OF +command);
}
}
}

64
corda/workflows/src/main/java/djmil/cordacheckers/gameproposal/CreateFlow.java
View File

@ -1,10 +1,20 @@
package djmil.cordacheckers.gameproposal; package djmil.cordacheckers.gameproposal;
import static java.util.Objects.requireNonNull;
import java.time.Duration;
import java.time.Instant;
import java.util.Arrays;
import java.util.UUID;
import org.slf4j.Logger; import org.slf4j.Logger;
import org.slf4j.LoggerFactory; import org.slf4j.LoggerFactory;
import djmil.cordacheckers.FlowResult; import djmil.cordacheckers.contracts.GameCommand;
import djmil.cordacheckers.contracts.GameProposalCommand; import djmil.cordacheckers.gamestate.CommitSubFlow;
import djmil.cordacheckers.gamestate.FlowResponce;
import djmil.cordacheckers.gamestate.View;
import djmil.cordacheckers.gamestate.ViewBuilder;
import djmil.cordacheckers.states.GameProposalState; import djmil.cordacheckers.states.GameProposalState;
import djmil.cordacheckers.states.Piece; import djmil.cordacheckers.states.Piece;
import net.corda.v5.application.flows.ClientRequestBody; import net.corda.v5.application.flows.ClientRequestBody;
@ -20,14 +30,6 @@ import net.corda.v5.ledger.common.NotaryLookup;
import net.corda.v5.ledger.utxo.UtxoLedgerService; import net.corda.v5.ledger.utxo.UtxoLedgerService;
import net.corda.v5.ledger.utxo.transaction.UtxoSignedTransaction; import net.corda.v5.ledger.utxo.transaction.UtxoSignedTransaction;
import net.corda.v5.membership.MemberInfo; import net.corda.v5.membership.MemberInfo;
import net.corda.v5.membership.NotaryInfo;
import static java.util.Objects.requireNonNull;
import java.time.Duration;
import java.time.Instant;
import java.util.Arrays;
import java.util.UUID;
public class CreateFlow implements ClientStartableFlow{ public class CreateFlow implements ClientStartableFlow{
@ -43,7 +45,7 @@ public class CreateFlow implements ClientStartableFlow{
public NotaryLookup notaryLookup; public NotaryLookup notaryLookup;
@CordaInject @CordaInject
public UtxoLedgerService ledgerService; public UtxoLedgerService utxoLedgerService;
@CordaInject @CordaInject
public FlowEngine flowEngine; public FlowEngine flowEngine;
@ -51,24 +53,34 @@ public class CreateFlow implements ClientStartableFlow{
@Suspendable @Suspendable
@Override @Override
public String call(ClientRequestBody requestBody) { public String call(ClientRequestBody requestBody) {
SecureHash gameStateUtxoTrxId = null;
try { try {
log.info("flow: Create Game Proposal"); final GameCommand command = new GameCommand(GameCommand.Action.GAME_PROPOSAL_CREATE);
final GameProposalCommand command = GameProposalCommand.CREATE;
final GameProposalState newGameProposal = buildGameProposalStateFrom(requestBody); final GameProposalState newGameProposal = buildGameProposalStateFrom(requestBody);
final UtxoSignedTransaction trx = prepareSignedTransaction(newGameProposal); final UtxoSignedTransaction utxoCandidate = utxoLedgerService.createTransactionBuilder()
.addCommand(command)
.addOutputState(newGameProposal)
.addSignatories(newGameProposal.getParticipants())
.setNotary(notaryLookup.getNotaryServices().iterator().next().getName())
.setTimeWindowUntil(Instant.now().plusMillis(Duration.ofDays(1).toMillis()))
.toSignedTransaction();
final SecureHash trxId = this.flowEngine gameStateUtxoTrxId = this.flowEngine
.subFlow(new CommitSubFlow(trx, command.getRespondent(newGameProposal))); .subFlow(new CommitSubFlow(utxoCandidate, command.getObserver(newGameProposal)));
return new FlowResult(newGameProposal.getGameUuid(), trxId) final View gameStateView = this.flowEngine
.subFlow(new ViewBuilder(gameStateUtxoTrxId));
return new FlowResponce(gameStateView, gameStateUtxoTrxId)
.toJsonEncodedString(jsonMarshallingService); .toJsonEncodedString(jsonMarshallingService);
} }
catch (Exception e) { catch (Exception e) {
log.warn("CreateGameProposal flow failed to process utxo request body " + requestBody + log.warn("Exception during processing " + requestBody + " request: " + e.getMessage());
" because: " + e.getMessage()); return new FlowResponce(e, gameStateUtxoTrxId)
return new FlowResult(e).toJsonEncodedString(jsonMarshallingService); .toJsonEncodedString(jsonMarshallingService);
} }
} }
@ -99,16 +111,4 @@ public class CreateFlow implements ClientStartableFlow{
); );
} }
@Suspendable
private UtxoSignedTransaction prepareSignedTransaction(GameProposalState outputGameProposalState) {
final NotaryInfo notary = notaryLookup.getNotaryServices().iterator().next();
return ledgerService.createTransactionBuilder()
.setNotary(notary.getName())
.setTimeWindowBetween(Instant.now(), Instant.now().plusMillis(Duration.ofDays(1).toMillis()))
.addOutputState(outputGameProposalState)
.addCommand(GameProposalCommand.CREATE)
.addSignatories(outputGameProposalState.getParticipants())
.toSignedTransaction();
}
} }

49
corda/workflows/src/main/java/djmil/cordacheckers/gameproposal/ListFlow.java
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@ -1,49 +0,0 @@
package djmil.cordacheckers.gameproposal;
import java.util.List;
import java.util.stream.Collectors;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import djmil.cordacheckers.FlowResult;
import djmil.cordacheckers.states.GameProposalState;
import net.corda.v5.application.flows.ClientRequestBody;
import net.corda.v5.application.flows.ClientStartableFlow;
import net.corda.v5.application.flows.CordaInject;
import net.corda.v5.application.marshalling.JsonMarshallingService;
import net.corda.v5.base.annotations.Suspendable;
import net.corda.v5.ledger.utxo.UtxoLedgerService;
public class ListFlow implements ClientStartableFlow {
private final static Logger log = LoggerFactory.getLogger(ListFlow.class);
@CordaInject
public UtxoLedgerService utxoLedgerService;
@CordaInject
public JsonMarshallingService jsonMarshallingService;
@Suspendable
@Override
public String call(ClientRequestBody requestBody) {
try {
log.info("ListFlow.call() called");
// Queries the VNode's vault for unconsumed states and converts the resulting
// List<StateAndRef<GameProposalState>> to a _serializable_ List<ListItem> DTO
List<ListItem> unconsumedGameProposaList = utxoLedgerService
.findUnconsumedStatesByType(GameProposalState.class)
.stream()
.map( stateAndRef -> new ListItem(stateAndRef.getState().getContractState()) )
.collect(Collectors.toList());
return new FlowResult(unconsumedGameProposaList).toJsonEncodedString(jsonMarshallingService);
} catch (Exception e) {
log.warn("ListFlow failed to process utxo request body " + requestBody + " because: " + e.getMessage());
return new FlowResult(e).toJsonEncodedString(jsonMarshallingService);
}
}
}

36
corda/workflows/src/main/java/djmil/cordacheckers/gameproposal/ListItem.java
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@ -1,36 +0,0 @@
package djmil.cordacheckers.gameproposal;
import java.util.UUID;
import djmil.cordacheckers.states.GameProposalState;
import djmil.cordacheckers.states.Piece;
// Class to hold results of the List flow.
// JsonMarshallingService can only serialize simple classes that the underlying Jackson serializer recognises,
// hence creating a DTO style object which consists only of Strings and a UUIDs. It is possible to create custom
// serializers for the JsonMarshallingService in the future.
public class ListItem {
public final String issuer;
public final String acquier;
public final Piece.Color acquierColor;
public final String message;
public final UUID id;
// Serialisation service requires a default constructor
public ListItem() {
this.issuer = null;
this.acquier = null;
this.acquierColor = null;
this.message = null;
this.id = null;
}
public ListItem(GameProposalState state) {
this.issuer = state.getIssuer().getCommonName();
this.acquier = state.getAcquier().getCommonName();
this.acquierColor = state.getAcquierColor();
this.message = state.getMessage();
this.id = state.getGameUuid();
}
}

86
corda/workflows/src/main/java/djmil/cordacheckers/gameproposal/RejectFlow.java Normal file
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@ -0,0 +1,86 @@
package djmil.cordacheckers.gameproposal;
import java.time.Duration;
import java.time.Instant;
import java.util.UUID;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import djmil.cordacheckers.contracts.GameCommand;
import djmil.cordacheckers.gamestate.CommitSubFlow;
import djmil.cordacheckers.gamestate.FlowResponce;
import djmil.cordacheckers.gamestate.GetFlow;
import djmil.cordacheckers.gamestate.View;
import djmil.cordacheckers.gamestate.ViewBuilder;
import djmil.cordacheckers.states.GameState;
import net.corda.v5.application.flows.ClientRequestBody;
import net.corda.v5.application.flows.ClientStartableFlow;
import net.corda.v5.application.flows.CordaInject;
import net.corda.v5.application.flows.FlowEngine;
import net.corda.v5.application.marshalling.JsonMarshallingService;
import net.corda.v5.application.membership.MemberLookup;
import net.corda.v5.base.annotations.Suspendable;
import net.corda.v5.crypto.SecureHash;
import net.corda.v5.ledger.common.NotaryLookup;
import net.corda.v5.ledger.utxo.StateAndRef;
import net.corda.v5.ledger.utxo.UtxoLedgerService;
import net.corda.v5.ledger.utxo.transaction.UtxoSignedTransaction;
public class RejectFlow implements ClientStartableFlow{
private final static Logger log = LoggerFactory.getLogger(RejectFlow.class);
@CordaInject
public JsonMarshallingService jsonMarshallingService;
@CordaInject
public MemberLookup memberLookup;
@CordaInject
public NotaryLookup notaryLookup;
@CordaInject
public UtxoLedgerService utxoLedgerService;
@CordaInject
public FlowEngine flowEngine;
@Suspendable
@Override
public String call(ClientRequestBody requestBody) {
SecureHash gameStateUtxoTrxId = null;
try {
final GameCommand command = new GameCommand(GameCommand.Action.GAME_PROPOSAL_REJECT);
final UUID gameStateUuid = UUID.fromString(requestBody.getRequestBody());
final StateAndRef<GameState> inputState = this.flowEngine
.subFlow(new GetFlow(gameStateUuid));
final UtxoSignedTransaction gameStateRejectTrx = utxoLedgerService.createTransactionBuilder()
.addCommand(command)
.addInputState(inputState.getRef())
.addSignatories(inputState.getState().getContractState().getParticipants())
.setNotary(inputState.getState().getNotaryName())
.setTimeWindowUntil(Instant.now().plusMillis(Duration.ofDays(1).toMillis()))
.toSignedTransaction();
gameStateUtxoTrxId = this.flowEngine
.subFlow(new CommitSubFlow(gameStateRejectTrx, command.getObserver(inputState)));
final View gameStateView = this.flowEngine
.subFlow(new ViewBuilder(gameStateUtxoTrxId));
return new FlowResponce(gameStateView, gameStateUtxoTrxId)
.toJsonEncodedString(jsonMarshallingService);
}
catch (Exception e) {
log.warn("Exception during processing " + requestBody + " request: " + e.getMessage());
return new FlowResponce(e, gameStateUtxoTrxId)
.toJsonEncodedString(jsonMarshallingService);
}
}
}

29
corda/workflows/src/main/java/djmil/cordacheckers/gameresult/GameResultView.java
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@ -1,29 +0,0 @@
package djmil.cordacheckers.gameresult;
import java.util.UUID;
import djmil.cordacheckers.states.GameResultState;
import djmil.cordacheckers.states.Piece;
public class GameResultView {
public final String whitePlayerName;
public final String blackPlayerName;
public final Piece.Color victoryColor;
public final UUID id;
// Serialisation service requires a default constructor
public GameResultView() {
this.whitePlayerName = null;
this.blackPlayerName = null;
this.victoryColor = null;
this.id = null;
}
public GameResultView(GameResultState gameResultState) {
this.whitePlayerName = gameResultState.getWinnerName().getCommonName();
this.blackPlayerName = gameResultState.getOpponentName().getCommonName();
this.victoryColor = gameResultState.getWinnerColor();
this.id = gameResultState.getGameUuid();
}
}

22
corda/workflows/src/main/java/djmil/cordacheckers/gameproposal/CommitSubFlow.java → corda/workflows/src/main/java/djmil/cordacheckers/gamestate/CommitSubFlow.java
View File

@ -1,4 +1,4 @@
package djmil.cordacheckers.gameproposal; package djmil.cordacheckers.gamestate;
import java.util.Arrays; import java.util.Arrays;
import java.util.List; import java.util.List;
@ -17,16 +17,16 @@ import net.corda.v5.crypto.SecureHash;
import net.corda.v5.ledger.utxo.UtxoLedgerService; import net.corda.v5.ledger.utxo.UtxoLedgerService;
import net.corda.v5.ledger.utxo.transaction.UtxoSignedTransaction; import net.corda.v5.ledger.utxo.transaction.UtxoSignedTransaction;
@InitiatingFlow(protocol = "game-proposal") @InitiatingFlow(protocol = "gamestate-commit")
public class CommitSubFlow implements SubFlow<SecureHash> { public class CommitSubFlow implements SubFlow<SecureHash> {
private final static Logger log = LoggerFactory.getLogger(CommitSubFlow.class); private final static Logger log = LoggerFactory.getLogger(CommitSubFlow.class);
private final UtxoSignedTransaction signedTransaction; private final UtxoSignedTransaction utxTrxCandidate;
private final MemberX500Name respondenName; private final MemberX500Name counterpartyName;
public CommitSubFlow(UtxoSignedTransaction signedTransaction, MemberX500Name respondenName) { public CommitSubFlow(UtxoSignedTransaction signedTransaction, MemberX500Name counterpartyName) {
this.signedTransaction = signedTransaction; this.utxTrxCandidate = signedTransaction;
this.respondenName = respondenName; this.counterpartyName = counterpartyName;
} }
@CordaInject @CordaInject
@ -38,9 +38,9 @@ public class CommitSubFlow implements SubFlow<SecureHash> {
@Override @Override
@Suspendable @Suspendable
public SecureHash call() { public SecureHash call() {
log.info("GamePropsal commit started"); log.info("GameState commit started");
final FlowSession session = flowMessaging.initiateFlow(this.respondenName); final FlowSession session = flowMessaging.initiateFlow(this.counterpartyName);
/* /*
* Calls the Corda provided finalise() function which gather signatures from the counterparty, * Calls the Corda provided finalise() function which gather signatures from the counterparty,
@ -50,11 +50,11 @@ public class CommitSubFlow implements SubFlow<SecureHash> {
final List<FlowSession> sessionsList = Arrays.asList(session); final List<FlowSession> sessionsList = Arrays.asList(session);
final SecureHash trxId = ledgerService final SecureHash trxId = ledgerService
.finalize(this.signedTransaction, sessionsList) .finalize(this.utxTrxCandidate, sessionsList)
.getTransaction() .getTransaction()
.getId(); .getId();
log.info("GamePropsal commit " +trxId); log.info("GameState commit " +trxId);
return trxId; return trxId;
} }
} }

124
corda/workflows/src/main/java/djmil/cordacheckers/gamestate/CommitSubFlowResponder.java Normal file
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@ -0,0 +1,124 @@
package djmil.cordacheckers.gamestate;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleCommand;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleOutputState;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleInputState;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import djmil.cordacheckers.contracts.GameCommand;
import djmil.cordacheckers.states.GameBoardState;
import djmil.cordacheckers.states.GameProposalState;
import djmil.cordacheckers.states.GameResultState;
import djmil.cordacheckers.states.GameState;
import net.corda.v5.application.flows.CordaInject;
import net.corda.v5.application.flows.InitiatedBy;
import net.corda.v5.application.flows.ResponderFlow;
import net.corda.v5.application.membership.MemberLookup;
import net.corda.v5.application.messaging.FlowSession;
import net.corda.v5.base.annotations.Suspendable;
import net.corda.v5.base.exceptions.CordaRuntimeException;
import net.corda.v5.base.types.MemberX500Name;
import net.corda.v5.ledger.utxo.UtxoLedgerService;
import net.corda.v5.ledger.utxo.transaction.UtxoLedgerTransaction;
import net.corda.v5.ledger.utxo.transaction.UtxoTransactionValidator;
@InitiatedBy(protocol = "gamestate-commit")
public class CommitSubFlowResponder implements ResponderFlow {
private final static Logger log = LoggerFactory.getLogger(CommitSubFlowResponder.class);
@CordaInject
public MemberLookup memberLookup;
@CordaInject
public UtxoLedgerService utxoLedgerService;
@Suspendable
@Override
public void call(FlowSession session) {
UtxoTransactionValidator txValidator = trxToValidate -> {
try {
final GameCommand gameCommand = getSingleCommand(trxToValidate, GameCommand.class);
final GameState gameState = getGameStateFromTransaction(trxToValidate, gameCommand);
checkParticipants(session, gameCommand, gameState);
/*
* Other checks / actions ?
*/
log.info("Approval for " + trxToValidate.getId());
} catch (Exception e) {
log.warn("Validation has failed. " +e.getMessage());
// We have to re-trow an exception to indicate validation failure
throw new CordaRuntimeException(e.getClass().getCanonicalName(), e.getMessage(), e.getCause());
}
};
try {
this.utxoLedgerService
.receiveFinality(session, txValidator);
} catch (Exception e) {
// Log Corda's specific message about finality validation failure
log.warn(e.getMessage());
}
}
/**
*
* @param gameStateTransaction an utxo ledger transaction, that involves GameState
* @param command
* @return the most recent (from perspective of session participants validation) GameState for a given transaction
*
* @see djmil.cordacheckers.gamestate.ViewBuilder#getGameStateFromTransaction(UtxoLedgerTransaction, GameCommand)
*/
@Suspendable
GameState getGameStateFromTransaction(UtxoLedgerTransaction gameStateTransaction, GameCommand command) {
switch (command.action) {
case GAME_PROPOSAL_CREATE:
return getSingleOutputState(gameStateTransaction, GameProposalState.class);
case GAME_PROPOSAL_ACCEPT:
case GAME_PROPOSAL_REJECT:
case GAME_PROPOSAL_CANCEL:
return getSingleInputState(gameStateTransaction, GameProposalState.class);
case GAME_BOARD_MOVE:
return getSingleOutputState(gameStateTransaction, GameBoardState.class);
case GAME_BOARD_SURRENDER:
case GAME_RESULT_CREATE:
return getSingleOutputState(gameStateTransaction, GameResultState.class);
}
throw new GameCommand.ActionException();
}
@Suspendable
void checkParticipants(FlowSession session, GameCommand gameCommand, GameState outputGameState) throws ParticipantException {
final var myName = memberLookup.myInfo().getName();
final var outputStateConterparty = outputGameState.getCounterpartyName(myName);
final var sessionConterparty = session.getCounterparty();
final var actor = gameCommand.getActor(outputGameState);
final var observer = gameCommand.getObserver(outputGameState);
if (outputStateConterparty.compareTo(sessionConterparty) != 0)
throw new ParticipantException("Counterparty", sessionConterparty, outputStateConterparty);
if (actor.compareTo(sessionConterparty) != 0)
throw new ParticipantException("Actor", sessionConterparty, actor);
if (observer.compareTo(myName) != 0)
throw new ParticipantException("Observer", myName, observer);
}
public static class ParticipantException extends Exception {
public ParticipantException(String role, MemberX500Name expected, MemberX500Name actual) {
super("Bad participants. " +role +" role: expected '" +expected +"', actual '" +actual +"'");
}
}
}

18
corda/workflows/src/main/java/djmil/cordacheckers/FlowResult.java → corda/workflows/src/main/java/djmil/cordacheckers/gamestate/FlowResponce.java
View File

@ -1,28 +1,22 @@
package djmil.cordacheckers; package djmil.cordacheckers.gamestate;
import net.corda.v5.application.marshalling.JsonMarshallingService; import net.corda.v5.application.marshalling.JsonMarshallingService;
import net.corda.v5.crypto.SecureHash; import net.corda.v5.crypto.SecureHash;
public class FlowResult { public class FlowResponce {
public final Object successStatus; public final View successStatus;
public final SecureHash transactionId; public final SecureHash transactionId;
public final String failureStatus; public final String failureStatus;
public FlowResult(Object success) { public FlowResponce(View success, SecureHash transactionId) {
this.successStatus = success;
this.transactionId = null;
this.failureStatus = null;
}
public FlowResult(Object success, SecureHash transactionId) {
this.successStatus = success; this.successStatus = success;
this.transactionId = transactionId; this.transactionId = transactionId;
this.failureStatus = null; this.failureStatus = null;
} }
public FlowResult(Exception exception) { public FlowResponce(Exception exception, SecureHash transactionId) {
this.successStatus = null; this.successStatus = null;
this.transactionId = null; this.transactionId = transactionId;
this.failureStatus = exception.getMessage(); this.failureStatus = exception.getMessage();
} }

86
corda/workflows/src/main/java/djmil/cordacheckers/gamestate/GetFlow.java Normal file
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@ -0,0 +1,86 @@
package djmil.cordacheckers.gamestate;
import java.util.UUID;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import djmil.cordacheckers.states.GameState;
import net.corda.v5.application.flows.ClientRequestBody;
import net.corda.v5.application.flows.ClientStartableFlow;
import net.corda.v5.application.flows.CordaInject;
import net.corda.v5.application.flows.FlowEngine;
import net.corda.v5.application.flows.SubFlow;
import net.corda.v5.application.marshalling.JsonMarshallingService;
import net.corda.v5.base.annotations.Suspendable;
import net.corda.v5.crypto.SecureHash;
import net.corda.v5.ledger.utxo.StateAndRef;
import net.corda.v5.ledger.utxo.UtxoLedgerService;
public class GetFlow implements ClientStartableFlow, SubFlow<StateAndRef<GameState>> {
private final static Logger log = LoggerFactory.getLogger(GetFlow.class);
private UUID subflowGameStateUuid = null;
public GetFlow() {
this.subflowGameStateUuid = null;
}
public GetFlow(UUID gameStateUuid) {
this.subflowGameStateUuid = gameStateUuid;
}
@CordaInject
public JsonMarshallingService jsonMarshallingService;
@CordaInject
public UtxoLedgerService utxoLedgerService;
@CordaInject
public FlowEngine flowEngine;
@Override
@Suspendable
public StateAndRef<GameState> call() { // <<-- SubFlow<T> entry
return findGameStateUtxoSar(this.subflowGameStateUuid);
}
@Override
@Suspendable
public String call(ClientRequestBody requestBody) { // <<-- ClientStartableFlow entry
SecureHash gameStateUtxoTrxId = null;
try {
final UUID gameStateUuid = UUID.fromString(requestBody.getRequestBody());
gameStateUtxoTrxId = findGameStateUtxoSar(gameStateUuid)
.getRef().getTransactionId();
final View gameStateView = this.flowEngine
.subFlow(new ViewBuilder(gameStateUtxoTrxId));
return new FlowResponce(gameStateView, gameStateUtxoTrxId)
.toJsonEncodedString(jsonMarshallingService);
}
catch (Exception e) {
log.warn("Exception during processing " + requestBody + " request: " + e.getMessage());
return new FlowResponce(e, gameStateUtxoTrxId).toJsonEncodedString(jsonMarshallingService);
}
}
@Suspendable
StateAndRef<GameState> findGameStateUtxoSar(UUID gameStateUuid) {
/*
* Get list of all unconsumed aka 'active' GameStates, then filter by UUID.
* Note, this is an inefficient way to perform this operation if there are a large
* number of 'active' GameProposals exists in storage.
*/
return this.utxoLedgerService
.findUnconsumedStatesByType(GameState.class)
.stream()
.filter(sar -> sar.getState().getContractState().getGameUuid().equals(gameStateUuid))
.reduce((a, b) -> {throw new IllegalStateException("Multiple GameStates found: " +a +", " +b);})
.get();
}
}

67
corda/workflows/src/main/java/djmil/cordacheckers/gamestate/ListFlow.java Normal file
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@ -0,0 +1,67 @@
package djmil.cordacheckers.gamestate;
import java.util.LinkedList;
import java.util.List;
import java.util.stream.Collectors;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import djmil.cordacheckers.states.GameState;
import net.corda.v5.application.flows.ClientRequestBody;
import net.corda.v5.application.flows.ClientStartableFlow;
import net.corda.v5.application.flows.CordaInject;
import net.corda.v5.application.flows.FlowEngine;
import net.corda.v5.application.marshalling.JsonMarshallingService;
import net.corda.v5.base.annotations.Suspendable;
import net.corda.v5.crypto.SecureHash;
import net.corda.v5.ledger.utxo.UtxoLedgerService;
public class ListFlow implements ClientStartableFlow {
private final static Logger log = LoggerFactory.getLogger(ListFlow.class);
@CordaInject
public UtxoLedgerService utxoLedgerService;
@CordaInject
public JsonMarshallingService jsonMarshallingService;
@CordaInject
public FlowEngine flowEngine;
@Suspendable
@Override
public String call(ClientRequestBody requestBody) {
try {
List<SecureHash> gameStateUtxoTrxIdList = getGameStateUtxoTrxIdList();
// TODO: try in one single list
List<View> gameStateViewList = new LinkedList<View>();
for (SecureHash gameStateUtxoTrxId: gameStateUtxoTrxIdList) {
final View gameStateView = this.flowEngine
.subFlow(new ViewBuilder(gameStateUtxoTrxId));
gameStateViewList.add(gameStateView);
}
return new ListFlowResponce(gameStateViewList)
.toJsonEncodedString(jsonMarshallingService);
} catch (Exception e) {
log.warn("Exception during processing " + requestBody + " request: " + e.getMessage());
return new ListFlowResponce(e)
.toJsonEncodedString(jsonMarshallingService);
}
}
@Suspendable
List<SecureHash> getGameStateUtxoTrxIdList() {
return utxoLedgerService
.findUnconsumedStatesByType(GameState.class)
.stream()
.map( stateAndRef -> stateAndRef.getRef().getTransactionId() )
.collect(Collectors.toList());
}
}

25
corda/workflows/src/main/java/djmil/cordacheckers/gamestate/ListFlowResponce.java Normal file
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@ -0,0 +1,25 @@
package djmil.cordacheckers.gamestate;
import java.util.List;
import net.corda.v5.application.marshalling.JsonMarshallingService;
public class ListFlowResponce {
public final List<View> successStatus;
public final String failureStatus;
public ListFlowResponce(List<View> success) {
this.successStatus = success;
this.failureStatus = null;
}
public ListFlowResponce(Exception exception) {
this.successStatus = null;
this.failureStatus = exception.getMessage();
}
public String toJsonEncodedString(JsonMarshallingService jsonMarshallingService) {
return jsonMarshallingService.format(this);
}
}

96
corda/workflows/src/main/java/djmil/cordacheckers/gamestate/View.java Normal file
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@ -0,0 +1,96 @@
package djmil.cordacheckers.gamestate;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import djmil.cordacheckers.states.GameBoardState;
import djmil.cordacheckers.states.GameProposalState;
import djmil.cordacheckers.states.GameResultState;
import djmil.cordacheckers.states.Piece;
import net.corda.v5.base.types.MemberX500Name;
// GameBoard from the player's point of view
public class View {
public static enum Status {
GAME_PROPOSAL_WAIT_FOR_OPPONENT,
GAME_PROPOSAL_WAIT_FOR_YOU,
GAME_PROPOSAL_REJECTED,
GAME_PROPOSAL_CANCELED,
GAME_BOARD_WAIT_FOR_OPPONENT,
GAME_BOARD_WAIT_FOR_YOU,
GAME_RESULT_YOU_WON,
GAME_RESULT_YOU_LOOSE;
}
public final Status status;
public final String opponentName;
public final Piece.Color opponentColor;
public final Map<Integer, Piece> board;
public final Integer moveNumber;
public final List<Integer> previousMove;
public final String message;
public final UUID uuid;
// Serialisation service requires a default constructor
public View() {
this.status = null;
this.opponentName = null;
this.opponentColor = null;
this.board = null;
this.moveNumber = null;
this.previousMove = null;
this.message = null;
this.uuid = null;
}
public View(View.Status status, GameProposalState gameProposal, MemberX500Name myName) {
this.status = status;
this.opponentName = gameProposal.getCounterpartyName(myName).getCommonName();
this.opponentColor = gameProposal.getCounterpartyColor(myName);
this.board = null;
this.moveNumber = null;
this.previousMove = null;
this.message = gameProposal.getMessage();
this.uuid = gameProposal.getGameUuid();
}
public View(View.Status status, GameBoardState gameBoard, MemberX500Name myName) {
this.status = status;
this.opponentName = gameBoard.getCounterpartyName(myName).getCommonName();
this.opponentColor = gameBoard.getCounterpartyColor(myName);
this.board = gameBoard.getBoard();
this.moveNumber = gameBoard.getMoveNumber();
this.previousMove = null;
this.message = gameBoard.getMessage();
this.uuid = gameBoard.getGameUuid();
}
public View(View.Status status, GameBoardState gameBoard, List<Integer> previousMove, MemberX500Name myName) {
this.status = status;
this.opponentName = gameBoard.getCounterpartyName(myName).getCommonName();
this.opponentColor = gameBoard.getCounterpartyColor(myName);
this.board = gameBoard.getBoard();
this.moveNumber = gameBoard.getMoveNumber();
this.previousMove = previousMove;
this.message = gameBoard.getMessage();
this.uuid = gameBoard.getGameUuid();
}
public View(View.Status status, GameResultState gameResult, MemberX500Name myName) {
this.status = status;
this.opponentName = gameResult.getCounterpartyName(myName).getCommonName();
this.opponentColor = gameResult.getCounterpartyColor(myName);
this.board = null;
this.moveNumber = null;
this.previousMove = null;
this.message = gameResult.getMessage();
this.uuid = gameResult.getGameUuid();
}
}

147
corda/workflows/src/main/java/djmil/cordacheckers/gamestate/ViewBuilder.java Normal file
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@ -0,0 +1,147 @@
package djmil.cordacheckers.gamestate;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleCommand;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleOutputState;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleInputState;
import djmil.cordacheckers.contracts.GameCommand;
import djmil.cordacheckers.states.GameBoardState;
import djmil.cordacheckers.states.GameProposalState;
import djmil.cordacheckers.states.GameResultState;
import djmil.cordacheckers.states.GameState;
import net.corda.v5.application.flows.CordaInject;
import net.corda.v5.application.flows.SubFlow;
import net.corda.v5.application.membership.MemberLookup;
import net.corda.v5.base.annotations.Suspendable;
import net.corda.v5.base.types.MemberX500Name;
import net.corda.v5.crypto.SecureHash;
import net.corda.v5.ledger.utxo.UtxoLedgerService;
import net.corda.v5.ledger.utxo.transaction.UtxoLedgerTransaction;
/*
* A view on a ledger transaction that has GameState involved in it, from perspective of a concrete player
*/
public class ViewBuilder implements SubFlow<View> {
private final SecureHash gameStateUtxoTrxId;
public ViewBuilder (SecureHash gameStateUtxoTrxId) {
this.gameStateUtxoTrxId = gameStateUtxoTrxId;
}
@CordaInject
public UtxoLedgerService utxoLedgerService;
@CordaInject
public MemberLookup memberLookup;
@Override
@Suspendable
public View call() {
final UtxoLedgerTransaction gameStateUtxo = this.utxoLedgerService
.findLedgerTransaction(gameStateUtxoTrxId);
return buildGameStateView(gameStateUtxo);
}
@Suspendable
View buildGameStateView(UtxoLedgerTransaction gameStateUtxo) {
MemberX500Name myName = memberLookup.myInfo().getName();
final GameCommand command = getSingleCommand(gameStateUtxo, GameCommand.class);
final GameState state = getGameStateFromTransaction(gameStateUtxo, command);
final View.Status viewStatus = action2status(command, state, myName);
switch (command.action) {
case GAME_PROPOSAL_CREATE:
case GAME_PROPOSAL_CANCEL:
case GAME_PROPOSAL_REJECT:
if (state instanceof GameProposalState)
return new View(viewStatus, (GameProposalState)state, myName);
break;
case GAME_PROPOSAL_ACCEPT:
case GAME_BOARD_MOVE:
if (state instanceof GameBoardState)
return new View(viewStatus, (GameBoardState)state, command.move, myName);
break;
case GAME_BOARD_SURRENDER:
case GAME_RESULT_CREATE:
if (state instanceof GameResultState)
return new View(viewStatus, (GameResultState)state, myName);
break;
}
throw new GameCommand.ActionException();
}
/**
*
* @param gameStateTransaction an utxo ledger transaction, that involves GameState
* @param command
* @return the most recent (from perspective of building a GameView) GameState for a given transaction
*
* @see djmil.cordacheckers.gamestate.CommitSubFlowResponder#getGameStateFromTransaction(UtxoLedgerTransaction, GameCommand)
*/
@Suspendable
GameState getGameStateFromTransaction(UtxoLedgerTransaction gameStateTransaction, GameCommand command) {
switch (command.action) {
case GAME_PROPOSAL_CREATE:
return getSingleOutputState(gameStateTransaction, GameProposalState.class);
case GAME_PROPOSAL_REJECT:
case GAME_PROPOSAL_CANCEL:
return getSingleInputState(gameStateTransaction, GameProposalState.class);
case GAME_PROPOSAL_ACCEPT:
case GAME_BOARD_MOVE:
return getSingleOutputState(gameStateTransaction, GameBoardState.class);
case GAME_BOARD_SURRENDER:
case GAME_RESULT_CREATE:
return getSingleOutputState(gameStateTransaction, GameResultState.class);
}
throw new GameCommand.ActionException();
}
@Suspendable
View.Status action2status(GameCommand command, GameState state, MemberX500Name myName) {
final boolean myAction = command.getActor(state).compareTo(myName) == 0;
switch (command.action) {
case GAME_PROPOSAL_CREATE:
if (myAction)
return View.Status.GAME_PROPOSAL_WAIT_FOR_OPPONENT;
else
return View.Status.GAME_PROPOSAL_WAIT_FOR_YOU;
case GAME_PROPOSAL_REJECT:
return View.Status.GAME_PROPOSAL_REJECTED;
case GAME_PROPOSAL_CANCEL:
return View.Status.GAME_PROPOSAL_CANCELED;
case GAME_PROPOSAL_ACCEPT:
case GAME_BOARD_MOVE:
if (myAction)
return View.Status.GAME_BOARD_WAIT_FOR_YOU;
else
return View.Status.GAME_BOARD_WAIT_FOR_OPPONENT;
case GAME_BOARD_SURRENDER:
if (myAction)
return View.Status.GAME_RESULT_YOU_LOOSE;
else
return View.Status.GAME_RESULT_YOU_WON;
case GAME_RESULT_CREATE:
if (myAction)
return View.Status.GAME_RESULT_YOU_WON;
else
return View.Status.GAME_RESULT_YOU_LOOSE;
}
throw new GameCommand.ActionException();
}
}