djmil/corda-checkers
djmil/corda-checkers
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GameBoard VicrotyFlow

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- better error messages
- moar GameMove tests
- a vicotry condition check
- GameContract
  + participnats vaidation
  + more accure Major Action checks
- automaic Vicotry condition check for Move flow
- GameResultCommiter as a sub flow
This commit is contained in:
djmil 2023-10-01 14:13:52 +02:00
parent eb1e7fd93c
commit e3ca1e0fc0
23 changed files with 385 additions and 227 deletions
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10
backend/src/main/java/djmil/cordacheckers/cordaclient/dao/flow/arguments/Rsp.java
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@ -7,13 +7,13 @@ public interface Rsp <T> {
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);
throw new RuntimeException(msg);
if (failureStatus() == null) {
System.out.println(requestBody.clientRequestId() +" [OK]");
return successStatus();
}
return successStatus();
System.err.println(requestBody.clientRequestId() +" has failed: " +failureStatus());
throw new RuntimeException(failureStatus());
}
}

12
backend/src/main/java/djmil/cordacheckers/cordaclient/dao/flow/arguments/RspGameState.java
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@ -1,22 +1,10 @@
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();
}
}

18
backend/src/test/java/djmil/cordacheckers/cordaclient/GameBoardTests.java
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@ -79,12 +79,24 @@ public class GameBoardTests {
System.out.println("Game UUID " +game.uuid());
final var m0 = cordaClient.gameProposalAccept(hiBlack, game.uuid());
assertThat(m0.previousMove()).isNull();
assertThat(m0.status()).isEqualByComparingTo(Status.GAME_BOARD_WAIT_FOR_OPPONENT);
assertThatThrownBy(() -> {
cordaClient.gameBoardMove(hiBlack, game.uuid(), move(12, 16),
"Black can not move, since it is opponent's turn");
});
assertThatThrownBy(() -> {
cordaClient.gameBoardMove(hiBlack, game.uuid(), move(24, 20),
"Black can not move opponent's stone as well");
});
assertThatThrownBy(() -> {
cordaClient.gameBoardMove(hiWhite, game.uuid(), move(9, 13),
"White can not move opponent's stone");
});
assertThatThrownBy(() -> {
cordaClient.gameBoardMove(hiWhite, game.uuid(), move(17, 14),
"Trying to move an empty tile");
@ -96,11 +108,13 @@ public class GameBoardTests {
assertThat(m1.board().get(22)).isNull();
assertThat(m1.board().get(18)).isEqualTo(WHITE_MAN);
assertThat(m1.moveNumber() == 1);
assertThat(m1.previousMove().get(0) == 22);
assertThat(m1.previousMove().get(1) == 18);
assertThat(m1.status()).isEqualByComparingTo(Status.GAME_BOARD_WAIT_FOR_OPPONENT);
assertThatThrownBy(() -> {
cordaClient.gameBoardMove(hiBlack, game.uuid(), move(12, 13),
"Prohibitted move shall be rejected");
"Prohibited move shall be rejected");
});
final var m2 = cordaClient.gameBoardMove(hiBlack, game.uuid(), move(11, 15), null);
@ -109,6 +123,8 @@ public class GameBoardTests {
assertThat(m2.board().get(11)).isNull();
assertThat(m2.board().get(15)).isEqualTo(BLACK_MAN);
assertThat(m2.moveNumber() == 2);
assertThat(m2.previousMove().get(0) == 11);
assertThat(m2.previousMove().get(1) == 15);
assertThat(m2.status()).isEqualByComparingTo(Status.GAME_BOARD_WAIT_FOR_OPPONENT);
assertThatThrownBy(() -> {

54
corda/contracts/src/main/java/djmil/cordacheckers/checkers/Move.java
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@ -30,8 +30,8 @@ public class Move {
return move.apply(board, moveColor);
}
private Stone.Color apply(Map<Integer, Stone> board, Stone.Color expectedMoveColor) {
final Set<Move> mandatoryJumps = getMandatoryJumps(board, expectedMoveColor);
private Stone.Color apply(Map<Integer, Stone> board, Stone.Color moveColor) {
final Set<Move> mandatoryJumps = getPossibleJumps(board, moveColor);
if (mandatoryJumps.size() != 0 && !mandatoryJumps.contains(this))
throw new Exception("A mandatory opponent's stone capture must be performed");
@ -39,8 +39,8 @@ public class Move {
if (movingStone == null)
throw new Exception("An empty starting tile");
if (movingStone.getColor() != expectedMoveColor)
throw new Exception("Only " +expectedMoveColor.name() +" color is expected to move");
if (movingStone.getColor() != moveColor)
throw new Exception("Only " +moveColor.name() +" color is expected to move");
final Set<Move> allMoves = movingStone.getMoves(from);
if (!allMoves.contains(this))
@ -52,16 +52,16 @@ public class Move {
if (isJump()) {
final Stone jumpOver = board.remove(this.jumpOver);
if (jumpOver == null || jumpOver.getColor() != expectedMoveColor.opposite())
if (jumpOver == null || jumpOver.getColor() != moveColor.opposite())
throw new Exception("Must jump over an opponent's stone");
final Set<Move> chainJumps = movingStone.getJumps(this.to);
chainJumps.removeIf(move -> !move.canJump(board, expectedMoveColor));
chainJumps.removeIf(move -> !move.canJump(board, moveColor));
if (chainJumps.size() != 0)
return expectedMoveColor; // player must continue his turn
return moveColor; // player must continue his turn
}
return expectedMoveColor.opposite(); // player has finished his turn
return moveColor.opposite(); // player has finished his turn
}
boolean isJump() {
@ -69,6 +69,9 @@ public class Move {
}
boolean canJump(Map<Integer, Stone> board, Stone.Color color) {
if (!isJump())
return false;
final Stone jumpStone = board.get(this.from);
if (jumpStone == null || jumpStone.getColor() != color)
return false;
@ -83,6 +86,20 @@ public class Move {
return true;
}
boolean canMove(Map<Integer, Stone> board, Stone.Color color) {
if (isJump())
return canJump(board, color);
final Stone stepStone = board.get(this.from);
if (stepStone == null || stepStone.getColor() != color)
return false;
if (board.get(this.to) == null)
return false;
return true;
}
static Integer intersection(Set<Integer> a, Set<Integer> b) {
Set<Integer> intersection = new HashSet<Integer>(a);
@ -171,7 +188,7 @@ public class Move {
}
}
static Set<Move> getMandatoryJumps(Map<Integer, Stone> board, Stone.Color color) {
static Set<Move> getPossibleJumps(Map<Integer, Stone> board, Stone.Color color) {
Set<Move> res = new HashSet<Move>();
for (Map.Entry<Integer, Stone> entry : board.entrySet()) {
@ -183,13 +200,30 @@ public class Move {
final Set<Move> jumps = stone.getJumps(from);
jumps.removeIf( move -> !move.canJump(board, color));
res.addAll(jumps);
}
return res;
}
public static Set<Move> getPossibleMoves(Map<Integer, Stone> board, Stone.Color color) {
Set<Move> res = new HashSet<Move>();
for (Map.Entry<Integer, Stone> entry : board.entrySet()) {
final Integer from = entry.getKey();
final Stone stone = entry.getValue();
if (stone.getColor() != color)
continue;
final Set<Move> moves = stone.getMoves(from);
moves.removeIf( move -> !move.canMove(board, color));
res.addAll(moves);
}
return res;
}
@Override
public int hashCode() {
final int prime = 31;

119
corda/contracts/src/main/java/djmil/cordacheckers/contracts/GameCommand.java
View File

@ -3,9 +3,9 @@ package djmil.cordacheckers.contracts;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleInputState;
import static djmil.cordacheckers.contracts.UtxoLedgerTransactionUtil.getSingleOutputState;
import java.util.LinkedList;
import java.util.List;
import djmil.cordacheckers.checkers.Move;
import djmil.cordacheckers.states.GameBoardState;
import djmil.cordacheckers.states.GameProposalState;
import djmil.cordacheckers.states.GameResultState;
@ -91,10 +91,8 @@ public class GameCommand implements Command {
break;
case GAME_BOARD_MOVE:
if (gameState instanceof GameBoardState) {
final var activePlayer = ((GameBoardState)gameState).getActivePlayerName();
return gameState.getOpponentName(activePlayer);
}
if (gameState instanceof GameBoardState)
return ((GameBoardState)gameState).getIdelPlayerName();
break;
case GAME_BOARD_SURRENDER:
@ -114,28 +112,34 @@ public class GameCommand implements Command {
throw new RuntimeException(action +": unexpected GameState type " +gameState.getClass());
}
/*
* Transaction validation
*/
public void validateGameProposalCreate(UtxoLedgerTransaction trx) {
requireThat(trx.getInputContractStates().isEmpty(), CREATE_INPUT_STATE);
requireThat(trx.getOutputContractStates().size() == 1, CREATE_OUTPUT_STATE);
final GameProposalState gameProposal = getSingleOutputState(trx, GameProposalState.class);
requireThat(gameProposal.getOpponentName(gameProposal.getIssuerName()).compareTo(gameProposal.getAcquierName()) == 0,
/*
* Major command logick check
*/
requireThat(gameProposal.getIssuerName().compareTo(gameProposal.getBlackPlayer()) == 0 ||
gameProposal.getIssuerName().compareTo(gameProposal.getWhitePlayer()) == 0,
"GameProposal.Issuer must be either Black or White player");
}
public void validateGameProposalAccept(UtxoLedgerTransaction trx) {
requireThat(trx.getInputContractStates().size() == 1, ACCEPT_INPUT_STATE);
requireThat(trx.getInputContractStates().size() == 1, ACCEPT_INPUT_STATE);
requireThat(trx.getOutputContractStates().size() == 1, ACCEPT_OUTPUT_STATE);
final GameProposalState inGameProposal = getSingleInputState(trx, GameProposalState.class);
final GameProposalState inGameProposal = getSingleInputState (trx, GameProposalState.class);
final GameBoardState outGameBoard = getSingleOutputState(trx, GameBoardState.class);
requireThat(inGameProposal.getParticipants().containsAll(outGameBoard.getParticipants()), IN_OUT_PARTICIPANTS);
requireThat(outGameBoard.getWhitePlayer().compareTo(inGameProposal.getWhitePlayer()) == 0, IN_OUT_PARTICIPANTS);
requireThat(outGameBoard.getBlackPlayer().compareTo(inGameProposal.getBlackPlayer()) == 0, IN_OUT_PARTICIPANTS);
requireThat(outGameBoard.getParticipants().containsAll(inGameProposal.getParticipants()), IN_OUT_PARTICIPANTS);
/*
* Major command logick check
*/
requireThat(outGameBoard.getBoard().equals(GameBoardContract.initialBoard), "Bad GameBoard initial state");
}
@ -153,47 +157,61 @@ public class GameCommand implements Command {
getSingleInputState(trx, GameProposalState.class);
}
public 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.getWhitePlayer(),
inGameBoardState.getBlackPlayer())
);
List<MemberX500Name> outActors = new LinkedList<MemberX500Name>(List.of(
outGameResultState.getWhitePlayer(),
outGameResultState.getBlackPlayer())
);
requireThat(inActors.containsAll(outActors) && outActors.containsAll(inActors), IN_OUT_PARTICIPANTS);
final GameInfo gameInfo = new GameInfo(trx);
final var winnerName = inGameBoardState.getOpponentName(gameInfo.issuer);
requireThat(outGameResultState.getWinnerName().compareTo(winnerName) == 0,
"Expected winner "+winnerName.getCommonName() +", proposed winner " +outGameResultState.getWinnerName().getCommonName());
}
public void validateGameBoardMove(UtxoLedgerTransaction trx, List<Integer> move) {
requireThat(trx.getInputContractStates().size() == 1, MOVE_INPUT_STATE);
final var inGameBoardState = getSingleInputState(trx, GameBoardState.class);
requireThat(trx.getInputContractStates().size() == 1, MOVE_INPUT_STATE);
requireThat(trx.getOutputContractStates().size() == 1, MOVE_OUTPUT_STATE);
final var outGameBoardState = getSingleOutputState(trx, GameBoardState.class);
requireThat(inGameBoardState.getWhitePlayer().compareTo(outGameBoardState.getWhitePlayer()) == 0, IN_OUT_PARTICIPANTS);
requireThat(inGameBoardState.getBlackPlayer().compareTo(outGameBoardState.getBlackPlayer()) == 0, IN_OUT_PARTICIPANTS);
final var inGameBoard = getSingleInputState (trx, GameBoardState.class);
final var outGameBoard = getSingleOutputState(trx, GameBoardState.class);
final var newGameBoard = new GameBoardState(inGameBoardState, move, outGameBoardState.getMessage());
requireThat(outGameBoardState.equals(newGameBoard), "Unexpected output state");
requireThat(outGameBoard.getWhitePlayer().compareTo(inGameBoard.getWhitePlayer()) == 0, IN_OUT_PARTICIPANTS);
requireThat(outGameBoard.getBlackPlayer().compareTo(inGameBoard.getBlackPlayer()) == 0, IN_OUT_PARTICIPANTS);
requireThat(outGameBoard.getParticipants().containsAll(inGameBoard.getParticipants()), IN_OUT_PARTICIPANTS);
/*
* Major command logick check
*/
final var newGameBoard = new GameBoardState(inGameBoard, move, outGameBoard.getMessage());
requireThat(outGameBoard.equals(newGameBoard), "Unexpected output state");
}
public void validateGameResultCreate(UtxoLedgerTransaction trx) {
throw new RuntimeException("Unimplemented");
public void validateGameBoardSurrender(UtxoLedgerTransaction trx) {
requireThat(trx.getInputContractStates().size() == 1, SURRENDER_INPUT_STATE);
requireThat(trx.getOutputContractStates().size() == 1, SURRENDER_OUTPUT_STATE);
final var inGameBoard = getSingleInputState (trx, GameBoardState.class);
final var outGameResult = getSingleOutputState(trx, GameResultState.class);
requireThat(outGameResult.getWhitePlayer().compareTo(inGameBoard.getWhitePlayer()) == 0, IN_OUT_PARTICIPANTS);
requireThat(outGameResult.getBlackPlayer().compareTo(inGameBoard.getBlackPlayer()) == 0, IN_OUT_PARTICIPANTS);
requireThat(outGameResult.getParticipants().containsAll(inGameBoard.getParticipants()), IN_OUT_PARTICIPANTS);
/*
* Major command logick check
*/
requireThat(outGameResult.getLooserName().compareTo(outGameResult.getBlackPlayer()) == 0 ||
outGameResult.getLooserName().compareTo(outGameResult.getWhitePlayer()) == 0,
"Surenderer must be either Black or White player");
}
public void validateGameBoardVictory(UtxoLedgerTransaction trx) {
requireThat(trx.getInputContractStates().size() == 1, VICTORY_INPUT_STATE);
requireThat(trx.getOutputContractStates().size() == 1, VICTORY_OUTPUT_STATE);
final var inGameBoard = getSingleInputState (trx, GameBoardState.class);
final var outGameResult = getSingleOutputState(trx, GameResultState.class);
requireThat(outGameResult.getWhitePlayer().compareTo(inGameBoard.getWhitePlayer()) == 0, IN_OUT_PARTICIPANTS);
requireThat(outGameResult.getBlackPlayer().compareTo(inGameBoard.getBlackPlayer()) == 0, IN_OUT_PARTICIPANTS);
requireThat(outGameResult.getParticipants().containsAll(inGameBoard.getParticipants()), IN_OUT_PARTICIPANTS);
/*
* Major command logick check
*/
final var possibleMoves = Move.getPossibleMoves(inGameBoard.getBoard(), inGameBoard.getActiveColor());
requireThat(possibleMoves.isEmpty(), "Victory condition violation");
requireThat(outGameResult.getWinnerName().compareTo(inGameBoard.getIdelPlayerName()) == 0, "Bad winner name");
}
public static void requireThat(boolean asserted, String errorMessage) {
@ -203,7 +221,7 @@ public class GameCommand implements Command {
}
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 IN_OUT_PARTICIPANTS = "Output participants should include all input 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";
@ -224,4 +242,7 @@ public class GameCommand implements Command {
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 VICTORY_INPUT_STATE = "VICTORY command should have exactly one GameBoardState input state";
static final String VICTORY_OUTPUT_STATE = "VICTORY command should have exactly one GameResultState output state";
}

2
corda/contracts/src/main/java/djmil/cordacheckers/contracts/GameInfo.java
View File

@ -60,7 +60,7 @@ public class GameInfo {
return;
case GAME_BOARD_SURRENDER:
this.state = getSingleOutputState(utxoTrx, GameResultState.class);
this.state = getSingleOutputState(utxoTrx, GameResultState.class);
this.issuer = ((GameResultState)this.state).getLooserName();
this.actor = null;
return;

2
corda/contracts/src/main/java/djmil/cordacheckers/contracts/GameResultContract.java
View File

@ -25,7 +25,7 @@ public class GameResultContract implements net.corda.v5.ledger.utxo.Contract {
break;
case GAME_BOARD_VICTORY:
command.validateGameResultCreate(trx);
command.validateGameBoardVictory(trx);
break;
default:

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

@ -15,7 +15,7 @@ import net.corda.v5.ledger.utxo.BelongsToContract;
@BelongsToContract(GameBoardContract.class)
public class GameBoardState extends GameState {
private final Stone.Color moveColor;
private final Stone.Color activeColor;
private final Integer moveNumber;
private final Map<Integer, Stone> board;
@ -24,7 +24,7 @@ public class GameBoardState extends GameState {
gameProposalState.gameUuid, gameProposalState.message, gameProposalState.participants);
this.board = new LinkedHashMap<Integer, Stone>(GameBoardContract.initialBoard);
this.moveColor = Stone.Color.WHITE;
this.activeColor = Stone.Color.WHITE;
this.moveNumber = 0;
}
@ -33,26 +33,26 @@ public class GameBoardState extends GameState {
message, currentGameBoardState.participants);
this.board = new LinkedHashMap<Integer, Stone>(currentGameBoardState.getBoard());
this.moveColor = Move.apply(move, this.board, currentGameBoardState.getMoveColor());
this.activeColor = Move.apply(move, this.board, currentGameBoardState.getActiveColor());
this.moveNumber = (currentGameBoardState.moveColor == this.moveColor)
this.moveNumber = (currentGameBoardState.activeColor == this.activeColor)
? currentGameBoardState.getMoveNumber() // current player has not finished his move jet
: currentGameBoardState.getMoveNumber() +1;
}
@ConstructorForDeserialization
public GameBoardState(MemberX500Name whitePlayer, MemberX500Name blackPlayer,
Stone.Color moveColor, Integer moveNumber, Map<Integer, Stone> board, String message,
Stone.Color activeColor, Integer moveNumber, Map<Integer, Stone> board, String message,
UUID gameUuid, List<PublicKey> participants) {
super(whitePlayer, blackPlayer, gameUuid, message, participants);
this.moveColor = moveColor;
this.activeColor = activeColor;
this.moveNumber = moveNumber;
this.board = board;
}
public Stone.Color getMoveColor() {
return moveColor;
public Stone.Color getActiveColor() {
return activeColor;
}
public Integer getMoveNumber() {
@ -60,7 +60,11 @@ public class GameBoardState extends GameState {
}
public MemberX500Name getActivePlayerName() {
return moveColor == Stone.Color.WHITE ? whitePlayer : blackPlayer;
return activeColor == Stone.Color.WHITE ? whitePlayer : blackPlayer;
}
public MemberX500Name getIdelPlayerName() {
return activeColor == Stone.Color.WHITE ? blackPlayer : whitePlayer;
}
public Map<Integer, Stone> getBoard() {
@ -76,7 +80,7 @@ public class GameBoardState extends GameState {
if (getClass() != obj.getClass())
return false;
GameBoardState other = (GameBoardState) obj;
if (moveColor != other.moveColor)
if (activeColor != other.activeColor)
return false;
if (moveNumber == null) {
if (other.moveNumber != null)

2
corda/contracts/src/main/java/djmil/cordacheckers/states/GameResultState.java
View File

@ -21,7 +21,7 @@ public class GameResultState extends GameState {
this.winnerName = winnerName;
}
public GameResultState(GameBoardState gameBoardState, MemberX500Name winnerName, PublicKey custodianPubicKey) {
public GameResultState(MemberX500Name winnerName, GameBoardState gameBoardState, PublicKey custodianPubicKey) {
super(gameBoardState.whitePlayer, gameBoardState.blackPlayer, gameBoardState.gameUuid, null, gameBoardState.participants, custodianPubicKey);
this.winnerName = winnerName;
}

49
corda/workflows/src/main/java/djmil/cordacheckers/gameboard/MoveFlow.java
View File

@ -6,8 +6,10 @@ import java.time.Instant;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import djmil.cordacheckers.checkers.Move;
import djmil.cordacheckers.contracts.GameCommand;
import djmil.cordacheckers.gamestate.CommitSubFlow;
import djmil.cordacheckers.gameresult.GameResultCommiter;
import djmil.cordacheckers.gamestate.CommitTrx;
import djmil.cordacheckers.gamestate.FlowResponce;
import djmil.cordacheckers.gamestate.GetFlow;
import djmil.cordacheckers.gamestate.View;
@ -19,7 +21,9 @@ 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;
@ -38,6 +42,9 @@ public class MoveFlow implements ClientStartableFlow{
@CordaInject
public FlowEngine flowEngine;
@CordaInject
public MemberLookup memberLookup;
@Suspendable
@Override
public String call(ClientRequestBody requestBody) {
@ -48,25 +55,33 @@ public class MoveFlow implements ClientStartableFlow{
final GameCommand command = new GameCommand(args.move);
final StateAndRef<GameState> currntGameBoardSar = this.flowEngine
final StateAndRef<GameState> currenrGameSar = this.flowEngine
.subFlow(new GetFlow(args.gameUuid));
final GameBoardState newGameBoard = new GameBoardState(
(GameBoardState)currntGameBoardSar.getState().getContractState(),
(GameBoardState)currenrGameSar.getState().getContractState(),
args.move,
args.message);
final UtxoSignedTransaction gameBoardMoveTrx = utxoLedgerService.createTransactionBuilder()
final UtxoSignedTransaction moveTrx = utxoLedgerService.createTransactionBuilder()
.addCommand(command)
.addInputState(currntGameBoardSar.getRef())
.addInputState(currenrGameSar.getRef())
.addOutputState(newGameBoard)
.addSignatories(newGameBoard.getParticipants())
.setNotary(currntGameBoardSar.getState().getNotaryName())
.setNotary(currenrGameSar.getState().getNotaryName())
.setTimeWindowUntil(Instant.now().plusMillis(Duration.ofDays(1).toMillis()))
.toSignedTransaction();
utxoTrxId = this.flowEngine
.subFlow(new CommitSubFlow(gameBoardMoveTrx, command.getCounterparty(currntGameBoardSar)));
.subFlow(new CommitTrx(moveTrx, command.getCounterparty(currenrGameSar)));
if (amIwon(newGameBoard)) {
log.info("Opponent has no possible moves. Claim victory!");
utxoTrxId = this.flowEngine
.subFlow(new GameResultCommiter(
newGameBoard.getGameUuid(),
new GameCommand(GameCommand.Action.GAME_BOARD_VICTORY)));
}
final View gameStateView = this.flowEngine
.subFlow(new ViewBuilder(utxoTrxId));
@ -74,12 +89,28 @@ public class MoveFlow implements ClientStartableFlow{
return new FlowResponce(gameStateView, utxoTrxId)
.toJsonEncodedString(jsonMarshallingService);
}
catch (Move.Exception e) {
return new FlowResponce(e.getMessage(), utxoTrxId)
.toJsonEncodedString(jsonMarshallingService);
}
catch (Exception e) {
log.warn(requestBody + " " +e.getClass() +": " +e.getMessage());
e.printStackTrace(System.out);
log.warn(requestBody + " [ERROR] " +e.toString());
return new FlowResponce(e, utxoTrxId)
.toJsonEncodedString(jsonMarshallingService);
}
}
@Suspendable
boolean amIwon(GameBoardState gameBoard) {
final MemberX500Name myName = memberLookup.myInfo().getName();
if (gameBoard.getActivePlayerName().compareTo(myName) == 0 ||
gameBoard.getIdelPlayerName().compareTo(myName) != 0)
return false; // a bit of overkill check, but you have to finish your move first
final var possibleOponnentMoves = Move.getPossibleMoves(gameBoard.getBoard(), gameBoard.getActiveColor());
return possibleOponnentMoves.isEmpty(); // true, if my opponent has no possible moves
}
}

33
corda/workflows/src/main/java/djmil/cordacheckers/gameboard/SurrenderFlow.java
View File

@ -1,21 +1,15 @@
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.gameresult.GameResultBuilder;
import djmil.cordacheckers.gameresult.GameResultBuilder.Reason;
import djmil.cordacheckers.gamestate.CommitSubFlow;
import djmil.cordacheckers.gameresult.GameResultCommiter;
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;
@ -23,9 +17,7 @@ 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 SurrenderFlow implements ClientStartableFlow{
@ -47,28 +39,10 @@ public class SurrenderFlow implements ClientStartableFlow{
try {
final GameCommand command = new GameCommand(GameCommand.Action.GAME_BOARD_SURRENDER);
final UUID gameUuid = UUID.fromString(requestBody.getRequestBody());
final StateAndRef<GameState> gameBoardSar = this.flowEngine
.subFlow(new GetFlow(gameUuid));
final GameResultBuilder.Result out = this.flowEngine
.subFlow(new GameResultBuilder(gameBoardSar, Reason.SURRENDER));
final UtxoSignedTransaction gameBoardSurrenderTrx = utxoLedgerService.createTransactionBuilder()
.addCommand(command)
.addInputState(gameBoardSar.getRef())
.addOutputState(out.gameResult)
.addSignatories(out.gameResult.getParticipants())
.setNotary(gameBoardSar.getState().getNotaryName())
.setTimeWindowUntil(Instant.now().plusMillis(Duration.ofDays(1).toMillis()))
.toSignedTransaction();
utxoTrxId = this.flowEngine
.subFlow(new CommitSubFlow(gameBoardSurrenderTrx,
command.getCounterparty(out.gameResult),
out.custodyName));
.subFlow(new GameResultCommiter(gameUuid, command));
final View gameStateView = this.flowEngine
.subFlow(new ViewBuilder(utxoTrxId));
@ -77,8 +51,7 @@ public class SurrenderFlow implements ClientStartableFlow{
.toJsonEncodedString(jsonMarshallingService);
}
catch (Exception e) {
log.warn("Exception during processing " + requestBody + " request: " + e.getMessage());
e.printStackTrace(System.out);
log.warn(requestBody + " [ERROR] " +e.toString());
return new FlowResponce(e, utxoTrxId)
.toJsonEncodedString(jsonMarshallingService);
}

60
corda/workflows/src/main/java/djmil/cordacheckers/gameboard/VictoryFlow.java Normal file
View File

@ -0,0 +1,60 @@
package djmil.cordacheckers.gameboard;
import java.util.UUID;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import djmil.cordacheckers.contracts.GameCommand;
import djmil.cordacheckers.gameresult.GameResultCommiter;
import djmil.cordacheckers.gamestate.FlowResponce;
import djmil.cordacheckers.gamestate.View;
import djmil.cordacheckers.gamestate.ViewBuilder;
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 VictoryFlow implements ClientStartableFlow {
private final static Logger log = LoggerFactory.getLogger(VictoryFlow.class);
@CordaInject
public JsonMarshallingService jsonMarshallingService;
@CordaInject
public UtxoLedgerService utxoLedgerService;
@CordaInject
public FlowEngine flowEngine;
@Override
@Suspendable
public String call(ClientRequestBody requestBody) {
SecureHash utxoTrxId = null;
try {
final UUID gameUuid = UUID.fromString(requestBody.getRequestBody());
final GameCommand command = new GameCommand(GameCommand.Action.GAME_BOARD_VICTORY);
utxoTrxId = this.flowEngine
.subFlow(new GameResultCommiter(gameUuid, command));
final View gameStateView = this.flowEngine
.subFlow(new ViewBuilder(utxoTrxId));
return new FlowResponce(gameStateView, utxoTrxId)
.toJsonEncodedString(jsonMarshallingService);
}
catch (Exception e) {
log.warn(requestBody + " [ERROR] " +e.toString());
return new FlowResponce(e, utxoTrxId)
.toJsonEncodedString(jsonMarshallingService);
}
}
}

9
corda/workflows/src/main/java/djmil/cordacheckers/gameproposal/AcceptFlow.java
View File

@ -8,7 +8,7 @@ import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import djmil.cordacheckers.contracts.GameCommand;
import djmil.cordacheckers.gamestate.CommitSubFlow;
import djmil.cordacheckers.gamestate.CommitTrx;
import djmil.cordacheckers.gamestate.FlowResponce;
import djmil.cordacheckers.gamestate.GetFlow;
import djmil.cordacheckers.gamestate.View;
@ -56,7 +56,7 @@ public class AcceptFlow implements ClientStartableFlow{
final GameBoardState gameBoard = new GameBoardState(gameProposal); // <<-- accepted
final UtxoSignedTransaction gameProposalAcceptTrx = utxoLedgerService.createTransactionBuilder()
final UtxoSignedTransaction acceptTrx = utxoLedgerService.createTransactionBuilder()
.addCommand(command)
.addInputState(gameProposalSar.getRef())
.addOutputState(gameBoard)
@ -66,7 +66,7 @@ public class AcceptFlow implements ClientStartableFlow{
.toSignedTransaction();
utxoTrxId = this.flowEngine
.subFlow(new CommitSubFlow(gameProposalAcceptTrx, command.getCounterparty(gameProposal)));
.subFlow(new CommitTrx(acceptTrx, command.getCounterparty(gameProposal)));
final View gameView = this.flowEngine
.subFlow(new ViewBuilder(utxoTrxId));
@ -75,8 +75,7 @@ public class AcceptFlow implements ClientStartableFlow{
.toJsonEncodedString(jsonMarshallingService);
}
catch (Exception e) {
log.warn("Exception during processing " + requestBody + " request: " + e.getMessage());
e.printStackTrace(System.out);
log.warn(requestBody + " [ERROR] " +e.toString());
return new FlowResponce(e, utxoTrxId)
.toJsonEncodedString(jsonMarshallingService);
}

6
corda/workflows/src/main/java/djmil/cordacheckers/gameproposal/CancelFlow.java
View File

@ -8,7 +8,7 @@ import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import djmil.cordacheckers.contracts.GameCommand;
import djmil.cordacheckers.gamestate.CommitSubFlow;
import djmil.cordacheckers.gamestate.CommitTrx;
import djmil.cordacheckers.gamestate.FlowResponce;
import djmil.cordacheckers.gamestate.GetFlow;
import djmil.cordacheckers.gamestate.View;
@ -62,7 +62,7 @@ public class CancelFlow implements ClientStartableFlow{
.toSignedTransaction();
utxoTrxId = this.flowEngine
.subFlow(new CommitSubFlow(gameProposalCancelTrx, command.getCounterparty(gameProposal)));
.subFlow(new CommitTrx(gameProposalCancelTrx, command.getCounterparty(gameProposal)));
final View gameStateView = this.flowEngine
.subFlow(new ViewBuilder(utxoTrxId));
@ -71,7 +71,7 @@ public class CancelFlow implements ClientStartableFlow{
.toJsonEncodedString(jsonMarshallingService);
}
catch (Exception e) {
log.warn("Exception during processing " + requestBody + " request: " + e.getMessage());
log.warn(requestBody + " [ERROR] " +e.toString());
return new FlowResponce(e, utxoTrxId)
.toJsonEncodedString(jsonMarshallingService);
}

6
corda/workflows/src/main/java/djmil/cordacheckers/gameproposal/CreateFlow.java
View File

@ -12,7 +12,7 @@ import org.slf4j.LoggerFactory;
import djmil.cordacheckers.checkers.Stone;
import djmil.cordacheckers.contracts.GameCommand;
import djmil.cordacheckers.gamestate.CommitSubFlow;
import djmil.cordacheckers.gamestate.CommitTrx;
import djmil.cordacheckers.gamestate.FlowResponce;
import djmil.cordacheckers.gamestate.View;
import djmil.cordacheckers.gamestate.ViewBuilder;
@ -69,7 +69,7 @@ public class CreateFlow implements ClientStartableFlow{
.toSignedTransaction();
utxoTrxId = this.flowEngine
.subFlow(new CommitSubFlow(gameProposalCreateTrx, command.getCounterparty(gameProposal)));
.subFlow(new CommitTrx(gameProposalCreateTrx, command.getCounterparty(gameProposal)));
final View gameView = this.flowEngine
.subFlow(new ViewBuilder(utxoTrxId));
@ -78,7 +78,7 @@ public class CreateFlow implements ClientStartableFlow{
.toJsonEncodedString(jsonMarshallingService);
}
catch (Exception e) {
log.warn("Exception during processing " + requestBody + " request: " + e.getMessage());
log.warn(requestBody + " [ERROR] " +e.toString());
return new FlowResponce(e, utxoTrxId)
.toJsonEncodedString(jsonMarshallingService);
}

6
corda/workflows/src/main/java/djmil/cordacheckers/gameproposal/RejectFlow.java
View File

@ -8,7 +8,7 @@ import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import djmil.cordacheckers.contracts.GameCommand;
import djmil.cordacheckers.gamestate.CommitSubFlow;
import djmil.cordacheckers.gamestate.CommitTrx;
import djmil.cordacheckers.gamestate.FlowResponce;
import djmil.cordacheckers.gamestate.GetFlow;
import djmil.cordacheckers.gamestate.View;
@ -70,7 +70,7 @@ public class RejectFlow implements ClientStartableFlow{
.toSignedTransaction();
utxoTrxId = this.flowEngine
.subFlow(new CommitSubFlow(gameProposalRejectTrx, command.getCounterparty(gameProposal)));
.subFlow(new CommitTrx(gameProposalRejectTrx, command.getCounterparty(gameProposal)));
final View gameStateView = this.flowEngine
.subFlow(new ViewBuilder(utxoTrxId));
@ -79,7 +79,7 @@ public class RejectFlow implements ClientStartableFlow{
.toJsonEncodedString(jsonMarshallingService);
}
catch (Exception e) {
log.warn("Exception during processing " + requestBody + " request: " + e.getMessage());
log.warn(requestBody + " [ERROR] " +e.toString());
return new FlowResponce(e, utxoTrxId)
.toJsonEncodedString(jsonMarshallingService);
}

74
corda/workflows/src/main/java/djmil/cordacheckers/gameresult/GameResultBuilder.java
View File

@ -1,74 +0,0 @@
package djmil.cordacheckers.gameresult;
import djmil.cordacheckers.states.GameBoardState;
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.ledger.utxo.StateAndRef;
import net.corda.v5.membership.MemberInfo;
public class GameResultBuilder implements SubFlow<GameResultBuilder.Result> {
public class Result {
final public GameResultState gameResult;
final public MemberX500Name custodyName;
public Result(GameResultState gameResult, MemberX500Name custodyName){
this.gameResult = gameResult;
this.custodyName = custodyName;
}
}
public static enum Reason {
VICTORY,
SURRENDER
}
private final GameBoardState gameBoard;
private final Reason reason;
public GameResultBuilder(StateAndRef<GameState> gameBoardSar, Reason reason) {
this.gameBoard = (GameBoardState)gameBoardSar.getState().getContractState();
this.reason = reason;
}
@CordaInject
public MemberLookup memberLookup;
@Override
@Suspendable
public Result call() {
final MemberInfo custodiaInfo = findCustodian();
return new Result(
new GameResultState(gameBoard, winnerName(), custodiaInfo.getLedgerKeys().get(0)),
custodiaInfo.getName());
}
@Suspendable
MemberInfo findCustodian() {
return memberLookup.lookup()
.stream()
.filter(m -> m.getName().getOrganizationUnit().equals("Custodian") )
.reduce((a,b) -> {throw new IllegalStateException("Multiple Custodian VNodes");})
.orElseThrow( () -> new IllegalStateException("No Custodian VNode found"));
}
@Suspendable
MemberX500Name winnerName() {
final MemberX500Name myName = memberLookup.myInfo().getName();
switch(reason) {
case VICTORY:
return myName;
case SURRENDER:
return gameBoard.getOpponentName(myName);
}
throw new IllegalStateException("Bad reason");
}
}

99
corda/workflows/src/main/java/djmil/cordacheckers/gameresult/GameResultCommiter.java Normal file
View File

@ -0,0 +1,99 @@
package djmil.cordacheckers.gameresult;
import java.security.PublicKey;
import java.time.Duration;
import java.time.Instant;
import java.util.UUID;
import djmil.cordacheckers.contracts.GameCommand;
import djmil.cordacheckers.gamestate.CommitTrx;
import djmil.cordacheckers.gamestate.GetFlow;
import djmil.cordacheckers.states.GameBoardState;
import djmil.cordacheckers.states.GameResultState;
import djmil.cordacheckers.states.GameState;
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.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.UtxoSignedTransaction;
import net.corda.v5.membership.MemberInfo;
public class GameResultCommiter implements SubFlow<SecureHash> {
private final UUID gameUuid;
private final GameCommand command;
public GameResultCommiter(UUID gameUuid, GameCommand command) {
this.gameUuid = gameUuid;
this.command = command;
}
@CordaInject
public FlowEngine flowEngine;
@CordaInject
public MemberLookup memberLookup;
@CordaInject
public UtxoLedgerService utxoLedgerService;
@Override
@Suspendable
public SecureHash call() {
final MemberInfo custodianInfo = findCustodian();
final StateAndRef<GameState> gameBoardSar = this.flowEngine
.subFlow(new GetFlow(this.gameUuid));
final GameBoardState gameBoard = (GameBoardState)gameBoardSar.getState().getContractState();
final GameResultState gameResult = gameResultBuilder(gameBoard, custodianInfo);
final UtxoSignedTransaction gameResultTrx = utxoLedgerService.createTransactionBuilder()
.addCommand(this.command)
.addInputState(gameBoardSar.getRef())
.addOutputState(gameResult)
.addSignatories(gameResult.getParticipants())
.setNotary(gameBoardSar.getState().getNotaryName())
.setTimeWindowUntil(Instant.now().plusMillis(Duration.ofDays(1).toMillis()))
.toSignedTransaction();
return this.flowEngine.subFlow(
new CommitTrx(gameResultTrx,
command.getCounterparty(gameResult),
custodianInfo.getName()) );
}
@Suspendable
MemberInfo findCustodian() {
return memberLookup.lookup()
.stream()
.filter(m -> m.getName().getOrganizationUnit().equals("Custodian") )
.reduce((a,b) -> {throw new IllegalStateException("Multiple Custodian VNodes");})
.orElseThrow( () -> new IllegalStateException("No Custodian VNode found"));
}
@Suspendable
GameResultState gameResultBuilder(GameBoardState gameBoard, MemberInfo custodiaInfo) {
final PublicKey custodianPublicKey = custodiaInfo.getLedgerKeys().get(0);
final MemberX500Name myName = memberLookup.myInfo().getName();
switch(this.command.getAction()) {
case GAME_BOARD_VICTORY:
return new GameResultState(myName, // i'm a winner
gameBoard, custodianPublicKey);
case GAME_BOARD_SURRENDER:
return new GameResultState(gameBoard.getOpponentName(myName), // me surrender to
gameBoard, custodianPublicKey);
default:
throw new IllegalStateException("GameResult: bad reason");
}
}
}

8
corda/workflows/src/main/java/djmil/cordacheckers/gamestate/CommitSubFlow.java → corda/workflows/src/main/java/djmil/cordacheckers/gamestate/CommitTrx.java
View File

@ -20,20 +20,20 @@ import net.corda.v5.ledger.utxo.UtxoLedgerService;
import net.corda.v5.ledger.utxo.transaction.UtxoSignedTransaction;
@InitiatingFlow(protocol = "gamestate-commit")
public class CommitSubFlow implements SubFlow<SecureHash> {
public class CommitTrx implements SubFlow<SecureHash> {
private final static Logger log = LoggerFactory.getLogger(CommitSubFlow.class);
private final static Logger log = LoggerFactory.getLogger(CommitTrx.class);
private final UtxoSignedTransaction utxTrxCandidate;
private final MemberX500Name counterpartyName;
private final MemberX500Name custodyName;
public CommitSubFlow(UtxoSignedTransaction signedTransaction, MemberX500Name counterpartyName) {
public CommitTrx(UtxoSignedTransaction signedTransaction, MemberX500Name counterpartyName) {
this.utxTrxCandidate = signedTransaction;
this.counterpartyName = counterpartyName;
this.custodyName = null;
}
public CommitSubFlow(UtxoSignedTransaction signedTransaction, MemberX500Name counterpartyName, MemberX500Name custodyName) {
public CommitTrx(UtxoSignedTransaction signedTransaction, MemberX500Name counterpartyName, MemberX500Name custodyName) {
this.utxTrxCandidate = signedTransaction;
this.counterpartyName = counterpartyName;
this.custodyName = custodyName;

4
corda/workflows/src/main/java/djmil/cordacheckers/gamestate/CommitSubFlowResponder.java → corda/workflows/src/main/java/djmil/cordacheckers/gamestate/CommitTrxResponder.java
View File

@ -17,9 +17,9 @@ 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 {
public class CommitTrxResponder implements ResponderFlow {
private final static Logger log = LoggerFactory.getLogger(CommitSubFlowResponder.class);
private final static Logger log = LoggerFactory.getLogger(CommitTrxResponder.class);
@CordaInject
public MemberLookup memberLookup;

6
corda/workflows/src/main/java/djmil/cordacheckers/gamestate/FlowResponce.java
View File

@ -20,6 +20,12 @@ public class FlowResponce {
this.failureStatus = exception.toString();
}
public FlowResponce(String exceptionMessage, SecureHash transactionId) {
this.successStatus = null;
this.transactionId = transactionId;
this.failureStatus = exceptionMessage;
}
public String toJsonEncodedString(JsonMarshallingService jsonMarshallingService) {
return jsonMarshallingService.format(this);
}

5
corda/workflows/src/main/java/djmil/cordacheckers/gamestate/GetFlow.java
View File

@ -63,8 +63,9 @@ public class GetFlow implements ClientStartableFlow, SubFlow<StateAndRef<GameSta
.toJsonEncodedString(jsonMarshallingService);
}
catch (Exception e) {
log.warn("Exception during processing " + requestBody + " request: " + e.getMessage());
return new FlowResponce(e, gameStateUtxoTrxId).toJsonEncodedString(jsonMarshallingService);
log.warn(requestBody + " [ERROR] " +e.toString());
return new FlowResponce(e, gameStateUtxoTrxId)
.toJsonEncodedString(jsonMarshallingService);
}
}

2
corda/workflows/src/main/java/djmil/cordacheckers/gamestate/ListFlow.java
View File

@ -49,7 +49,7 @@ public class ListFlow implements ClientStartableFlow {
return new ListFlowResponce(gameStateViewList)
.toJsonEncodedString(jsonMarshallingService);
} catch (Exception e) {
log.warn("Exception during processing " + requestBody + " request: " + e.getMessage());
log.warn(requestBody + " [ERROR] " +e.toString());
return new ListFlowResponce(e)
.toJsonEncodedString(jsonMarshallingService);
}