djmil/corda-checkers
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GameBoard command SURRENDER

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- produces GameResultState
- .addReferanceState() was changed with Opponent interface for States
This commit is contained in:
djmil 2023-09-15 15:43:31 +02:00
parent d7b6ce1f25
commit a34ea39dfb
26 changed files with 644 additions and 347 deletions
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20
backend/src/main/java/djmil/cordacheckers/cordaclient/CordaClient.java
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@ -23,6 +23,7 @@ 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.VirtualNodeList;
import djmil.cordacheckers.cordaclient.dao.flow.RequestBody;
@ -32,7 +33,7 @@ import djmil.cordacheckers.cordaclient.dao.flow.arguments.GameProposalCreateRes;
import djmil.cordacheckers.cordaclient.dao.flow.arguments.GameProposalListRes;
import djmil.cordacheckers.cordaclient.dao.flow.arguments.Empty;
import djmil.cordacheckers.cordaclient.dao.flow.arguments.GameBoardCommandReq;
import djmil.cordacheckers.cordaclient.dao.flow.arguments.GameBoardCommandRes;
import djmil.cordacheckers.cordaclient.dao.flow.arguments.GameBoardResGameResult;
import djmil.cordacheckers.cordaclient.dao.flow.arguments.GameBoardListRes;
import djmil.cordacheckers.cordaclient.dao.flow.arguments.GameProposalCommandAcceptRes;
import djmil.cordacheckers.cordaclient.dao.flow.arguments.GameProposalCommandReq;
@ -199,29 +200,28 @@ public class CordaClient {
return listFlowResult.successStatus();
}
public GameBoard gameBoardCommand(
public GameResult gameBoardSurrender(
HoldingIdentity myHoldingIdentity,
UUID gameBoardUuid,
GameBoardCommand command
UUID gameBoardUuid
) {
final RequestBody requestBody = new RequestBody(
"gb.command-" +command.getType() +UUID.randomUUID(),
"gb.surrender-" +UUID.randomUUID(),
"djmil.cordacheckers.gameboard.CommandFlow",
new GameBoardCommandReq(
gameBoardUuid,
command
new GameBoardCommand(GameBoardCommand.Type.SURRENDER)
)
);
final GameBoardCommandRes moveResult = cordaFlowExecute(
final GameBoardResGameResult moveResult = cordaFlowExecute(
myHoldingIdentity,
requestBody,
GameBoardCommandRes.class
GameBoardResGameResult.class
);
if (moveResult.failureStatus() != null) {
System.out.println("GameBoard.MoveFlow failed: " + moveResult.failureStatus());
throw new RuntimeException("GameBoard: MoveFlow execution has failed");
System.out.println("GameBoard.CommandFlow failed: " + moveResult.failureStatus());
throw new RuntimeException("GameBoard: CommandFlow execution has failed");
}
return moveResult.successStatus();

4
backend/src/main/java/djmil/cordacheckers/cordaclient/dao/GameBoard.java
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@ -13,6 +13,8 @@ public record GameBoard(
Map<Integer, Piece> board,
GameBoardCommand previousCommand,
String message,
UUID id) implements CordaState {
UUID id)
implements CordaState {
}

6
backend/src/main/java/djmil/cordacheckers/cordaclient/dao/GameBoardCommand.java
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@ -6,9 +6,9 @@ public class GameBoardCommand {
public static enum Type {
MOVE,
SURRENDER,
REQUEST_DRAW,
REQUEST_VICTORY,
FINISH; // aka accept DRAW or VICTORY request
DRAW,
VICTORY,
ACCEPT;
}
private final Type type;

16
backend/src/main/java/djmil/cordacheckers/cordaclient/dao/GameResult.java Normal file
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@ -0,0 +1,16 @@
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 id)
implements CordaState {
}

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

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

19
backend/src/test/java/djmil/cordacheckers/cordaclient/CordaClientTest.java
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@ -17,8 +17,8 @@ import com.fasterxml.jackson.databind.JsonMappingException;
import djmil.cordacheckers.cordaclient.dao.CordaState;
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.Piece;
import djmil.cordacheckers.cordaclient.dao.VirtualNode;
import djmil.cordacheckers.user.HoldingIdentityResolver;
@ -184,7 +184,7 @@ public class CordaClientTest {
}
@Test
void testGameBoardSurrender() throws JsonMappingException, JsonProcessingException {
void testGameBoardSurrender() throws JsonMappingException, JsonProcessingException, InvalidNameException {
final var hiAlice = holdingIdentityResolver.getByUsername("alice");
final var hiBob = holdingIdentityResolver.getByUsername("bob");
final var bobColor = Piece.Color.WHITE;
@ -202,12 +202,17 @@ public class CordaClientTest {
System.out.println("New GameBoard UUID "+ gbState.id());
final GameBoard gbSurrender = cordaClient.gameBoardCommand(
hiBob, gbState.id(),
new GameBoardCommand(GameBoardCommand.Type.SURRENDER)
);
assertThatThrownBy(() -> { // Alice can not surrender, since it is Bob's turn
cordaClient.gameBoardSurrender(
hiAlice, gbState.id());
});
System.out.println("SURRENDER GB: "+gbSurrender);
final GameResult gameResult = cordaClient.gameBoardSurrender(
hiBob, gbState.id());
assertThat(gameResult.whitePlayerName()).isEqualTo(hiBob.getName());
assertThat(gameResult.blackPlayerName()).isEqualTo(hiAlice.getName());
assertThat(gameResult.victoryColor()).isEqualByComparingTo(Piece.Color.BLACK);
}
private <T extends CordaState> T findByUuid(List<T> statesList, UUID uuid) {

42
corda/contracts/src/main/java/djmil/cordacheckers/contracts/GameBoardCommand.java
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@ -1,11 +1,19 @@
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 {
@ -54,5 +62,39 @@ public class GameBoardCommand implements Command {
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.getWhitePlayerName()) == 0, IN_OUT_PARTICIPANTS);
requireThat(inGameBoardState.getBlackPlayerName().compareTo(outGameResultState.getBlackPlayerName()) == 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 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);
}
}
}

29
corda/contracts/src/main/java/djmil/cordacheckers/contracts/GameBoardContract.java
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@ -1,9 +1,8 @@
package djmil.cordacheckers.contracts;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleCommand;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleInputState;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleOutputState;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleReferenceState;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleInputSar;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleReferenceSar;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@ -12,6 +11,7 @@ import djmil.cordacheckers.states.GameProposalState;
import net.corda.v5.base.annotations.Suspendable;
import net.corda.v5.base.exceptions.CordaRuntimeException;
import net.corda.v5.ledger.utxo.Command;
import net.corda.v5.ledger.utxo.StateAndRef;
import net.corda.v5.ledger.utxo.transaction.UtxoLedgerTransaction;
public class GameBoardContract implements net.corda.v5.ledger.utxo.Contract {
@ -33,7 +33,7 @@ public class GameBoardContract implements net.corda.v5.ledger.utxo.Contract {
break;
default:
throw new CordaRuntimeException(UNKNOWN_COMMAND);
throw new CordaRuntimeException("UNKNOWN_COMMAND");
}
} else
if (command instanceof GameBoardCommand) {
@ -43,7 +43,8 @@ public class GameBoardContract implements net.corda.v5.ledger.utxo.Contract {
break;
case SURRENDER:
break;
GameBoardCommand.validateSurrenderTrx(trx);
break;
case DRAW:
break;
@ -51,25 +52,14 @@ public class GameBoardContract implements net.corda.v5.ledger.utxo.Contract {
break;
case ACCEPT:
break;
default:
throw new GameBoardCommand.CommandTypeException();
}
} else {
throw new CordaRuntimeException(UNKNOWN_COMMAND);
throw new RuntimeException("Bad utxo command type");
}
}
@Suspendable
public static GameProposalState getReferanceGameProposalState(UtxoLedgerTransaction trx) {
final Command command = getSingleCommand(trx, Command.class);
if (command instanceof GameProposalCommand && (GameProposalCommand)command == GameProposalCommand.ACCEPT) {
return getSingleInputState(trx, GameProposalState.class);
} else
if (command instanceof GameBoardCommand) {
return getSingleReferenceState(trx, GameProposalState.class);
}
throw new IllegalStateException(NO_REFERANCE_GAMEPROPOSAL_STATE_FOR_TRXID +trx.getId());
}
private static void requireThat(boolean asserted, String errorMessage) {
if(!asserted) {
@ -78,7 +68,6 @@ public class GameBoardContract implements net.corda.v5.ledger.utxo.Contract {
}
static final String REQUIRE_SINGLE_COMMAND = "Require a single command";
static final String UNKNOWN_COMMAND = "Unsupported 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 ";

8
corda/contracts/src/main/java/djmil/cordacheckers/contracts/GameProposalCommand.java
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@ -43,12 +43,12 @@ public enum GameProposalCommand implements Command {
}
}
public MemberX500Name getInitiator(StateAndRef<GameProposalState> utxoGameProposal) {
return getInitiator(utxoGameProposal.getState().getContractState());
public MemberX500Name getInitiator(StateAndRef<GameProposalState> gameProposalSar) {
return getInitiator(gameProposalSar.getState().getContractState());
}
public MemberX500Name getRespondent(StateAndRef<GameProposalState> utxoGameProposal) {
return getRespondent(utxoGameProposal.getState().getContractState());
public MemberX500Name getRespondent(StateAndRef<GameProposalState> gameProposalSar) {
return getRespondent(gameProposalSar.getState().getContractState());
}
public static void validateCreateTrx(UtxoLedgerTransaction trx) {

39
corda/contracts/src/main/java/djmil/cordacheckers/contracts/GameResultContract.java Normal file
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@ -0,0 +1,39 @@
package djmil.cordacheckers.contracts;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleCommand;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import net.corda.v5.base.exceptions.CordaRuntimeException;
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 {
private final static Logger log = LoggerFactory.getLogger(GameResultContract.class);
@Override
public void verify(UtxoLedgerTransaction trx) {
log.info("GameResultContract.verify() called");
requireThat(trx.getCommands().size() == 1, REQUIRE_SINGLE_COMMAND);
final GameBoardCommand command = getSingleCommand(trx, GameBoardCommand.class);
switch (command.getType()) {
case SURRENDER:
GameBoardCommand.validateSurrenderTrx(trx);
break;
// case ACCEPT:
// break;
default:
throw new CordaRuntimeException(UNKNOWN_COMMAND);
}
}
static final String REQUIRE_SINGLE_COMMAND = "Require a single command";
static final String UNKNOWN_COMMAND = "Unsupported command";
}

16
corda/contracts/src/main/java/djmil/cordacheckers/contracts/UtxoLedgerTransactionUtil.java
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@ -5,6 +5,7 @@ import java.util.Optional;
import net.corda.v5.ledger.utxo.Command;
import net.corda.v5.ledger.utxo.ContractState;
import net.corda.v5.ledger.utxo.StateAndRef;
import net.corda.v5.ledger.utxo.transaction.UtxoLedgerTransaction;
public class UtxoLedgerTransactionUtil {
@ -12,14 +13,18 @@ public class UtxoLedgerTransactionUtil {
return single(utxoTrx.getCommands(clazz), clazz);
}
public static <T extends ContractState> T getSingleReferenceState(UtxoLedgerTransaction utxoTrx, Class<T> clazz) {
return single(utxoTrx.getReferenceStates(clazz), clazz);
public static <T extends ContractState> StateAndRef<T> getSingleReferenceSar(UtxoLedgerTransaction utxoTrx, Class<T> clazz) {
return singleSar(utxoTrx.getReferenceStateAndRefs(clazz), clazz);
}
public static <T extends ContractState> T getSingleInputState(UtxoLedgerTransaction utxoTrx, Class<T> clazz) {
return single(utxoTrx.getInputStates(clazz), clazz);
}
public static <T extends ContractState> StateAndRef<T> getSingleInputSar(UtxoLedgerTransaction utxoTrx, Class<T> clazz) {
return singleSar(utxoTrx.getInputStateAndRefs(clazz), clazz);
}
public static <T extends ContractState> T getSingleOutputState(UtxoLedgerTransaction utxoTrx, Class<T> clazz) {
return single(utxoTrx.getOutputStates(clazz), clazz);
}
@ -57,6 +62,13 @@ public class UtxoLedgerTransactionUtil {
.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 NO_INSTANCES_OF = "No instances of ";
}

21
corda/contracts/src/main/java/djmil/cordacheckers/states/Counterparty.java Normal file
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@ -0,0 +1,21 @@
package djmil.cordacheckers.states;
import java.util.UUID;
import org.jetbrains.annotations.NotNull;
import net.corda.v5.base.annotations.CordaSerializable;
import net.corda.v5.base.types.MemberX500Name;
@CordaSerializable
public interface Counterparty {
@NotNull
MemberX500Name getCounterpartyName(MemberX500Name myName) throws NotInvolved;
public static class NotInvolved extends RuntimeException {
public <T> NotInvolved(MemberX500Name myName, Class<T> clazz, UUID uuid) {
super(myName +" not involved in " +clazz.getSimpleName() +" UUID " +uuid);
}
}
}

78
corda/contracts/src/main/java/djmil/cordacheckers/states/GameBoardState.java
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@ -9,47 +9,67 @@ import java.util.UUID;
import djmil.cordacheckers.contracts.GameBoardContract;
import djmil.cordacheckers.states.Piece.Color;
import net.corda.v5.base.annotations.ConstructorForDeserialization;
import net.corda.v5.base.types.MemberX500Name;
import net.corda.v5.ledger.utxo.BelongsToContract;
import net.corda.v5.ledger.utxo.ContractState;
import net.corda.v5.ledger.utxo.StateAndRef;
@BelongsToContract(GameBoardContract.class)
public class GameBoardState implements ContractState {
public class GameBoardState implements ContractState, Counterparty {
private final MemberX500Name whitePlayerName;
private final MemberX500Name blackPlayerName;
private final Piece.Color moveColor;
private final Map<Integer, Piece> board;
private final String message;
Map<Integer, Piece> board;
Piece.Color moveColor;
String message;
UUID id;
List<PublicKey> participants;
private final UUID id;
private final List<PublicKey> participants;
public GameBoardState(
StateAndRef<GameProposalState> utxoGameBoard
GameProposalState gameBoard
) {
this.board = new LinkedHashMap<Integer, Piece>(initialBoard);
this.whitePlayerName = gameBoard.getWhitePlayerName();
this.blackPlayerName = gameBoard.getBlackPlayerName();
// Initial GameBoard state
this.moveColor = Piece.Color.WHITE;
this.board = new LinkedHashMap<Integer, Piece>(initialBoard);
this.message = null;
this.id = UUID.randomUUID();
this.participants = utxoGameBoard.getState().getContractState().getParticipants();
this.participants = gameBoard.getParticipants();
}
@ConstructorForDeserialization
public GameBoardState(Map<Integer, Piece> board, Color moveColor, String message, UUID id,
List<PublicKey> participants) {
this.board = board;
public GameBoardState(MemberX500Name whitePlayerName, MemberX500Name blackPlayerName,
Color moveColor, Map<Integer, Piece> board, String message,
UUID id, List<PublicKey> participants) {
this.whitePlayerName = whitePlayerName;
this.blackPlayerName = blackPlayerName;
this.moveColor = moveColor;
this.board = board;
this.message = message;
this.id = id;
this.participants = participants;
}
public Map<Integer, Piece> getBoard() {
return board;
public MemberX500Name getWhitePlayerName() {
return whitePlayerName;
}
public MemberX500Name getBlackPlayerName() {
return blackPlayerName;
}
public Piece.Color getMoveColor() {
return moveColor;
}
public Map<Integer, Piece> getBoard() {
return board;
}
public String getMessage() {
return message;
}
@ -62,6 +82,34 @@ public class GameBoardState implements ContractState {
return participants;
}
@Override
public MemberX500Name getCounterpartyName(MemberX500Name myName) throws NotInvolved {
if (whitePlayerName.compareTo(myName) == 0)
return blackPlayerName;
if (blackPlayerName.compareTo(myName) == 0)
return whitePlayerName;
throw new Counterparty.NotInvolved(myName, GameBoardState.class, this.id);
}
public Piece.Color getCounterpartyColor(MemberX500Name myName) throws NotInvolved {
final MemberX500Name opponentName = getCounterpartyName(myName);
return getWhitePlayerName().compareTo(opponentName) == 0 ? Piece.Color.WHITE : Piece.Color.BLACK;
}
public MemberX500Name getMovePlayerName() {
switch (moveColor) {
case WHITE:
return whitePlayerName;
case BLACK:
return blackPlayerName;
default:
throw new Piece.Color.UnknownException();
}
}
public final static Map<Integer, Piece> initialBoard = Map.ofEntries(
// Inspired by Checkers notation rules: https://www.bobnewell.net/nucleus/checkers.php
Map.entry( 1, new Piece(Piece.Color.BLACK, Piece.Type.MAN)),

27
corda/contracts/src/main/java/djmil/cordacheckers/states/GameProposalState.java
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@ -11,14 +11,14 @@ import net.corda.v5.ledger.utxo.BelongsToContract;
import net.corda.v5.ledger.utxo.ContractState;
@BelongsToContract(GameProposalContract.class)
public class GameProposalState implements ContractState {
public class GameProposalState implements ContractState, Counterparty {
MemberX500Name issuer;
MemberX500Name acquier;
Piece.Color acquierColor;
String message;
UUID id;
List<PublicKey> participants;
private final MemberX500Name issuer;
private final MemberX500Name acquier;
private final Piece.Color acquierColor;
private final String message;
private final UUID id;
private final List<PublicKey> participants;
@ConstructorForDeserialization
public GameProposalState(
@ -69,20 +69,15 @@ public class GameProposalState implements ContractState {
return acquierColor == Piece.Color.BLACK ? getAcquier() : getIssuer();
}
public MemberX500Name getOpponentName(MemberX500Name myName) {
@Override
public MemberX500Name getCounterpartyName(MemberX500Name myName) throws NotInvolved {
if (issuer.compareTo(myName) == 0)
return acquier;
if (acquier.compareTo(myName) == 0)
return issuer;
throw new RuntimeException(myName +" seems to be not involved in " + id +" game");
}
public Piece.Color getOpponentColor(MemberX500Name myName) {
final MemberX500Name opponentName = getOpponentName(myName);
return getWhitePlayerName().compareTo(opponentName) == 0 ? Piece.Color.WHITE : Piece.Color.BLACK;
throw new Counterparty.NotInvolved(myName, GameProposalState.class, this.id);
}
}

75
corda/contracts/src/main/java/djmil/cordacheckers/states/GameResultState.java Normal file
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@ -0,0 +1,75 @@
package djmil.cordacheckers.states;
import java.security.PublicKey;
import java.util.List;
import java.util.UUID;
import djmil.cordacheckers.contracts.GameResultContract;
import net.corda.v5.base.annotations.ConstructorForDeserialization;
import net.corda.v5.base.types.MemberX500Name;
import net.corda.v5.ledger.utxo.BelongsToContract;
import net.corda.v5.ledger.utxo.ContractState;
@BelongsToContract(GameResultContract.class)
public class GameResultState implements ContractState, Counterparty {
private final MemberX500Name whitePlayerName;
private final MemberX500Name blackPlayerName;
private final Piece.Color victoryColor;
private final UUID id;
private final List<PublicKey> participants;
@ConstructorForDeserialization
public GameResultState(MemberX500Name whitePlayerName, MemberX500Name blackPlayerName, Piece.Color victoryColor,
UUID id, List<PublicKey> participants) {
this.whitePlayerName = whitePlayerName;
this.blackPlayerName = blackPlayerName;
this.victoryColor = victoryColor;
this.id = id;
this.participants = participants;
}
public GameResultState(GameBoardState stateGameBoard, Piece.Color victoryColor) {
this.whitePlayerName = stateGameBoard.getWhitePlayerName();
this.blackPlayerName = stateGameBoard.getBlackPlayerName();
this.victoryColor = victoryColor;
this.id = UUID.randomUUID();
this.participants = stateGameBoard.getParticipants();
}
public MemberX500Name getWhitePlayerName() {
return whitePlayerName;
}
public MemberX500Name getBlackPlayerName() {
return blackPlayerName;
}
public Piece.Color getVictoryColor() {
return victoryColor;
}
public UUID getId() {
return id;
}
@Override
public List<PublicKey> getParticipants() {
return participants;
}
@Override
public MemberX500Name getCounterpartyName(MemberX500Name myName) throws NotInvolved {
if (whitePlayerName.compareTo(myName) == 0)
return blackPlayerName;
if (blackPlayerName.compareTo(myName) == 0)
return whitePlayerName;
throw new Counterparty.NotInvolved(myName, GameResultState.class, this.id);
}
}

25
corda/contracts/src/main/java/djmil/cordacheckers/states/Piece.java
View File

@ -9,17 +9,34 @@ public class Piece {
@CordaSerializable
public enum Type {
MAN,
KING,
KING;
}
@CordaSerializable
public enum Color {
WHITE,
BLACK,
BLACK;
public static Color oppositOf(Color color) {
switch (color) {
case WHITE:
return BLACK;
case BLACK:
return WHITE;
default:
throw new UnknownException();
}
}
public static class UnknownException extends RuntimeException {
public UnknownException() {
super("Unknown Color value");
}
}
}
Color color;
Type type;
private final Color color;
private final Type type;
@ConstructorForDeserialization
public Piece(Color color, Type type) {

183
corda/workflows/src/main/java/djmil/cordacheckers/gameboard/CommandFlow.java
View File

@ -1,5 +1,12 @@
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;
@ -7,16 +14,19 @@ import org.slf4j.LoggerFactory;
import djmil.cordacheckers.FlowResult;
import djmil.cordacheckers.contracts.GameBoardCommand;
import djmil.cordacheckers.contracts.GameBoardContract;
import djmil.cordacheckers.contracts.GameProposalCommand;
import djmil.cordacheckers.contracts.GameBoardCommand.CommandTypeException;
import djmil.cordacheckers.gameresult.GameResultView;
import djmil.cordacheckers.states.GameBoardState;
import djmil.cordacheckers.states.GameProposalState;
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.FlowEngine;
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;
@ -26,9 +36,7 @@ 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;
@InitiatingFlow(protocol = "game-board")
public class CommandFlow implements ClientStartableFlow {
private final static Logger log = LoggerFactory.getLogger(CommandFlow.class);
@ -40,37 +48,26 @@ public class CommandFlow implements ClientStartableFlow {
public UtxoLedgerService utxoLedgerService;
@CordaInject
public FlowEngine flowEngine;
public MemberLookup memberLookup;
@CordaInject
public MemberLookup memberLookup;
public FlowMessaging flowMessaging;
@Override
@Suspendable
public String call(ClientRequestBody requestBody) {
log.info("GameBoardCommandFlow started");
try {
final CommandFlowArgs args = requestBody.getRequestBodyAs(jsonMarshallingService, CommandFlowArgs.class);
//final GameCommand command = args.getCommand();
log.info("GameBoardCommandFlow: findUnconsumedGameBoardState");
final StateAndRef<GameBoardState> gbStateAndRef = findUnconsumedGameBoardState(args.getGameBoardUuid());
// final UtxoSignedTransaction trx = prepareSignedTransaction(command, utxoGameProposal);
final StateAndRef<GameBoardState> utxoSarGameBoard = findUtxoGameBoard(args.getGameBoardUuid());
final SecureHash trxId = doTransaction(args.getCommand(), utxoSarGameBoard);
final Object trxResult = getTrxResult(trxId);
// final SecureHash trxId = this.flowEngine
// .subFlow( new CommitSubFlow(trx, command.getRespondent(utxoGameProposal)) );
// if (command == GameProposalCommand.ACCEPT) {
// GameBoardState newGb = (GameBoardState)trx.getOutputStateAndRefs().get(0).getState().getContractState();
// return new FlowResult(newGb.getId(), trxId)
// .toJsonEncodedString(jsonMarshallingService);
// }
log.info("GameBoardCommandFlow: prepareGameBoardView");
GameBoardView gbView = prepareGameBoardView(gbStateAndRef);
return new FlowResult(gbView )
return new FlowResult(trxResult, trxId)
.toJsonEncodedString(jsonMarshallingService);
}
}
catch (Exception e) {
log.warn("GameProposalAction flow failed to process utxo request body " + requestBody +
" because: " + e.getMessage());
@ -79,7 +76,7 @@ log.info("GameBoardCommandFlow: findUnconsumedGameBoardState");
}
@Suspendable
private StateAndRef<GameBoardState> findUnconsumedGameBoardState (UUID gameBoardUuid) {
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
@ -93,43 +90,111 @@ log.info("GameBoardCommandFlow: findUnconsumedGameBoardState");
.get();
}
// @Suspendable
// private UtxoSignedTransaction prepareSignedTransaction(
// GameProposalCommand command,
// StateAndRef<GameProposalState> utxoGameProposal
// ) {
// UtxoTransactionBuilder trxBuilder = ledgerService.createTransactionBuilder()
// .setNotary(utxoGameProposal.getState().getNotaryName())
// .setTimeWindowBetween(Instant.now(), Instant.now().plusMillis(Duration.ofDays(1).toMillis()))
// .addInputState(utxoGameProposal.getRef())
// .addCommand(command)
// .addSignatories(utxoGameProposal.getState().getContractState().getParticipants());
@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);
// if (command == GameProposalCommand.ACCEPT) {
// trxBuilder = trxBuilder
// .addOutputState(new GameBoardState(utxoGameProposal));
// //A state cannot be both an input and a reference input in the same transaction
// //.addReferenceState(utxoGameProposal.getRef());
// }
UtxoTransactionBuilder trxBuilder = utxoLedgerService.createTransactionBuilder()
.setNotary(utxoSarGameBoard.getState().getNotaryName())
.setTimeWindowBetween(Instant.now(), Instant.now().plusMillis(Duration.ofDays(1).toMillis()))
.addInputState(utxoSarGameBoard.getRef())
.addCommand(command)
.addSignatories(stateGameBoard.getParticipants());
// return trxBuilder.toSignedTransaction();
// }
switch (command.getType()) {
case SURRENDER:
case ACCEPT:
final Piece.Color winnerColor = winnerColor(command, stateGameBoard, myName);
trxBuilder = trxBuilder
.addOutputState( new GameResultState(stateGameBoard, winnerColor) );
break;
default:
throw new CommandTypeException("GameBoard.CommandFlow doTransaction()");
}
return commit(
trxBuilder.toSignedTransaction(),
opponentName);
}
@Suspendable
private GameBoardView prepareGameBoardView(StateAndRef<GameBoardState> stateAndRef) {
Piece.Color winnerColor(GameBoardCommand command, GameBoardState stateGameBoard, MemberX500Name myName) {
switch (command.getType()) {
case SURRENDER:
return stateGameBoard.getCounterpartyColor(myName);
case ACCEPT:
//stateGameBoard.getMoveColor();
throw new RuntimeException("Unimplemented");
default:
throw new CommandTypeException("GameBoard.CommandFlow winnerColor()");
}
}
@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:
case ACCEPT:
return viewGameResult(utxoTrx);
case MOVE:
case VICTORY: // request, shall be accepted by opponent
case DRAW: // request, shall be accepted by opponent
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();
final SecureHash trxId = stateAndRef.getRef().getTransactionId();
final UtxoLedgerTransaction utxoGameBoard = utxoLedgerService
.findLedgerTransaction(trxId);
log.info("GameBoardCommandFlow: createw gbView");
GameBoardView gbView = new GameBoardView(myName, utxoGameBoard);
gbView.previousCommand = new GameBoardCommand(GameBoardCommand.Type.SURRENDER);
return gbView;
// return new GameBoardView(myName, utxoGameBoard);
return new GameBoardView(utxoGameBoard, myName);
}
}

93
corda/workflows/src/main/java/djmil/cordacheckers/gameboard/CommandResponderFlow.java Normal file
View File

@ -0,0 +1,93 @@
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 ACCEPT:
return getSingleInputState(utxoGameBoard, GameBoardState.class);
case MOVE:
case VICTORY:
case DRAW:
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");
}
}

97
corda/workflows/src/main/java/djmil/cordacheckers/gameboard/CommitResponderFlow.java
View File

@ -1,97 +0,0 @@
package djmil.cordacheckers.gameboard;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import djmil.cordacheckers.contracts.GameBoardCommand;
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;
@InitiatedBy(protocol = "game-board")
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) {
try {
UtxoTransactionValidator txValidator = ledgerTransaction -> {
final GameBoardCommand command = ledgerTransaction.getCommands(GameBoardCommand.class).get(0);
// TODO
//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,
GameBoardCommand command
) {
final MemberX500Name myName = memberLookup.myInfo().getName();
final MemberX500Name otherName = session.getCounterparty();
// TODO
// 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 Action action = trx.getCommands(Action.class).get(0);
// switch (action) {
// case CREATE:
// return (GameProposalState)trx.getOutputContractStates().get(0);
// case ACCEPT:
// case REJECT:
// case CANCEL:
// return (GameProposalState)trx.getInputContractStates().get(0);
// default:
// throw new RuntimeException(Action.UNSUPPORTED_ACTION_VALUE_OF +action);
// }
// }
}

60
corda/workflows/src/main/java/djmil/cordacheckers/gameboard/CommitSubFlow.java
View File

@ -1,60 +0,0 @@
package djmil.cordacheckers.gameboard;
import java.util.Arrays;
import java.util.List;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import net.corda.v5.application.flows.CordaInject;
import net.corda.v5.application.flows.InitiatingFlow;
import net.corda.v5.application.flows.SubFlow;
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.UtxoLedgerService;
import net.corda.v5.ledger.utxo.transaction.UtxoSignedTransaction;
@InitiatingFlow(protocol = "game-board")
public class CommitSubFlow implements SubFlow<SecureHash> {
private final static Logger log = LoggerFactory.getLogger(CommitSubFlow.class);
private final UtxoSignedTransaction signedTransaction;
public CommitSubFlow(UtxoSignedTransaction signedTransaction) {
this.signedTransaction = signedTransaction;
}
@CordaInject
public UtxoLedgerService ledgerService;
@CordaInject
public FlowMessaging flowMessaging;
@Override
@Suspendable
public SecureHash call() {
log.info("GameBoard commit started");
final MemberX500Name respondenName = null; // TODO
final FlowSession session = flowMessaging.initiateFlow(respondenName);
/*
* 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 = ledgerService
.finalize(this.signedTransaction, sessionsList)
.getTransaction()
.getId();
log.info("GameBoard commit " +trxId);
return trxId;
}
}

18
corda/workflows/src/main/java/djmil/cordacheckers/gameboard/GameBoardView.java
View File

@ -4,10 +4,9 @@ import java.util.Map;
import java.util.UUID;
import djmil.cordacheckers.contracts.GameBoardCommand;
import djmil.cordacheckers.contracts.GameBoardContract;
import djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil;
import djmil.cordacheckers.states.Counterparty.NotInvolved;
import djmil.cordacheckers.states.GameBoardState;
import djmil.cordacheckers.states.GameProposalState;
import djmil.cordacheckers.states.Piece;
import net.corda.v5.base.types.MemberX500Name;
import net.corda.v5.ledger.utxo.transaction.UtxoLedgerTransaction;
@ -19,7 +18,7 @@ public class GameBoardView {
public final Piece.Color opponentColor;
public final Boolean opponentMove;
public final Map<Integer, Piece> board;
public /*final*/ GameBoardCommand previousCommand;
public final GameBoardCommand previousCommand;
public final String message;
public final UUID id;
@ -36,17 +35,14 @@ public class GameBoardView {
// A view from a perspective of a concrete player, on a ledger transaction that has
// produced new GameBoardState
public GameBoardView(MemberX500Name myName, UtxoLedgerTransaction utxoGameBoard) {
final GameProposalState referanceGameProposal = GameBoardContract
.getReferanceGameProposalState(utxoGameBoard);
this.opponentName = referanceGameProposal.getOpponentName(myName).getCommonName();
this.opponentColor = referanceGameProposal.getOpponentColor(myName);
public GameBoardView(UtxoLedgerTransaction utxoGameBoard, MemberX500Name myName) throws NotInvolved {
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.board = stateGameBoard.getBoard();
this.message = stateGameBoard.getMessage();
@ -54,7 +50,7 @@ public class GameBoardView {
this.previousCommand = UtxoLedgerTransactionUtil
.getOptionalCommand(utxoGameBoard, GameBoardCommand.class)
.orElseGet(() -> null);
.orElseGet(() -> null); // there is no previous command for GameProposal.Accept case
}
}

32
corda/workflows/src/main/java/djmil/cordacheckers/gameboard/ListFlow.java
View File

@ -7,9 +7,8 @@ import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import djmil.cordacheckers.FlowResult;
import djmil.cordacheckers.contracts.GameBoardContract;
import djmil.cordacheckers.states.GameBoardState;
import djmil.cordacheckers.states.GameProposalState;
import djmil.cordacheckers.states.Counterparty.NotInvolved;
import net.corda.v5.application.flows.ClientRequestBody;
import net.corda.v5.application.flows.ClientStartableFlow;
import net.corda.v5.application.flows.CordaInject;
@ -40,14 +39,11 @@ public class ListFlow implements ClientStartableFlow {
public String call(ClientRequestBody requestBody) {
try {
final var unconsumedGameBoardList = utxoLedgerService
final var utxoGameBoardList = utxoLedgerService
.findUnconsumedStatesByType(GameBoardState.class);
List<GameBoardView> res = new LinkedList<GameBoardView>();
for (StateAndRef<GameBoardState> gbState :unconsumedGameBoardList) {
// NOTE: lambda operations (aka .map) can not be used with UtxoLedgerService instances
res.add(prepareGameBoardView(gbState));
}
final List<GameBoardView> res = prepareGameBoardViewList(utxoGameBoardList);
return new FlowResult(res)
.toJsonEncodedString(jsonMarshallingService);
@ -59,15 +55,29 @@ public class ListFlow implements ClientStartableFlow {
}
@Suspendable
private GameBoardView prepareGameBoardView(StateAndRef<GameBoardState> stateAndRef) {
private List<GameBoardView> prepareGameBoardViewList(List<StateAndRef<GameBoardState>> utxoGamaBoardList) {
final MemberX500Name myName = memberLookup.myInfo().getName();
List<GameBoardView> res = new LinkedList<GameBoardView>();
final SecureHash trxId = stateAndRef.getRef().getTransactionId();
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(myName, utxoGameBoard);
return new GameBoardView(utxoGameBoard, myName);
}
}

38
corda/workflows/src/main/java/djmil/cordacheckers/gameproposal/CommandFlow.java
View File

@ -6,11 +6,11 @@ import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import djmil.cordacheckers.FlowResult;
import djmil.cordacheckers.contracts.GameBoardCommand;
import djmil.cordacheckers.contracts.GameProposalCommand;
import djmil.cordacheckers.gameboard.GameBoardView;
import djmil.cordacheckers.states.GameBoardState;
import djmil.cordacheckers.states.GameProposalState;
import djmil.cordacheckers.states.Counterparty.NotInvolved;
import net.corda.v5.application.flows.ClientRequestBody;
import net.corda.v5.application.flows.ClientStartableFlow;
import net.corda.v5.application.flows.CordaInject;
@ -52,21 +52,21 @@ public class CommandFlow implements ClientStartableFlow {
final CommandFlowArgs args = requestBody.getRequestBodyAs(jsonMarshallingService, CommandFlowArgs.class);
final GameProposalCommand command = args.getCommand();
final StateAndRef<GameProposalState> gpStateAndRef = findUnconsumedGameProposalState(args.getGameProposalUuid());
final StateAndRef<GameProposalState> utxoSarGameProposal = findUtxoGameProposal(args.getGameProposalUuid());
final UtxoSignedTransaction trxCandidate = prepareSignedTransaction(command, gpStateAndRef);
final UtxoSignedTransaction utxoDraft = prepareSignedTransaction(command, utxoSarGameProposal);
final SecureHash trxId = this.flowEngine
.subFlow( new CommitSubFlow(trxCandidate, command.getRespondent(gpStateAndRef)) );
final SecureHash utxoTrxId = this.flowEngine
.subFlow( new CommitSubFlow(utxoDraft, command.getRespondent(utxoSarGameProposal)) );
if (command == GameProposalCommand.ACCEPT) {
final GameBoardView gbView = prepareGameBoardView(trxId);
final GameBoardView viewGameBoard = prepareGameBoardView(utxoTrxId);
return new FlowResult(gbView, trxId)
return new FlowResult(viewGameBoard, utxoTrxId)
.toJsonEncodedString(jsonMarshallingService);
}
return new FlowResult(command+"ED", trxId) // REJECT+ED
return new FlowResult(command+"ED", utxoTrxId) // REJECT+ED
.toJsonEncodedString(jsonMarshallingService);
}
catch (Exception e) {
@ -77,7 +77,7 @@ public class CommandFlow implements ClientStartableFlow {
}
@Suspendable
private StateAndRef<GameProposalState> findUnconsumedGameProposalState (UUID gpUuid) {
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
@ -86,7 +86,7 @@ public class CommandFlow implements ClientStartableFlow {
return this.utxoLedgerService
.findUnconsumedStatesByType(GameProposalState.class)
.stream()
.filter(sar -> sar.getState().getContractState().getId().equals(gpUuid))
.filter(sar -> sar.getState().getContractState().getId().equals(uuidGameProposal))
.reduce((a, b) -> {throw new IllegalStateException("Multiple states: " +a +", " +b);})
.get();
}
@ -94,33 +94,31 @@ public class CommandFlow implements ClientStartableFlow {
@Suspendable
private UtxoSignedTransaction prepareSignedTransaction(
GameProposalCommand command,
StateAndRef<GameProposalState> gpStateAndRef
StateAndRef<GameProposalState> sarGameProposal
) {
UtxoTransactionBuilder trxBuilder = utxoLedgerService.createTransactionBuilder()
.setNotary(gpStateAndRef.getState().getNotaryName())
.setNotary(sarGameProposal.getState().getNotaryName())
.setTimeWindowBetween(Instant.now(), Instant.now().plusMillis(Duration.ofDays(1).toMillis()))
.addInputState(gpStateAndRef.getRef())
.addInputState(sarGameProposal.getRef())
.addCommand(command)
.addSignatories(gpStateAndRef.getState().getContractState().getParticipants());
.addSignatories(sarGameProposal.getState().getContractState().getParticipants());
if (command == GameProposalCommand.ACCEPT) {
trxBuilder = trxBuilder
.addOutputState(new GameBoardState(gpStateAndRef));
//A state cannot be both an input and a reference input in the same transaction
//.addReferenceState(utxoGameProposal.getRef());
.addOutputState(new GameBoardState(sarGameProposal.getState().getContractState()));
}
return trxBuilder.toSignedTransaction();
}
@Suspendable
private GameBoardView prepareGameBoardView(SecureHash gbUtxoTrxId) {
private GameBoardView prepareGameBoardView(SecureHash utxoTrxId) throws NotInvolved {
final MemberX500Name myName = memberLookup.myInfo().getName();
final UtxoLedgerTransaction utxoGameBoard = utxoLedgerService
.findLedgerTransaction(gbUtxoTrxId);
.findLedgerTransaction(utxoTrxId);
return new GameBoardView(myName, utxoGameBoard);
return new GameBoardView(utxoGameBoard, myName);
}
}

2
corda/workflows/src/main/java/djmil/cordacheckers/gameproposal/CommitResponderFlow.java
View File

@ -18,6 +18,8 @@ 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 {

29
corda/workflows/src/main/java/djmil/cordacheckers/gameresult/GameResultView.java Normal file
View File

@ -0,0 +1,29 @@
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.getWhitePlayerName().getCommonName();
this.blackPlayerName = gameResultState.getBlackPlayerName().getCommonName();
this.victoryColor = gameResultState.getVictoryColor();
this.id = gameResultState.getId();
}
}