io.atomix.protocols.raft.protocol.KeepAliveResponse Java Examples

The following examples show how to use io.atomix.protocols.raft.protocol.KeepAliveResponse. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example #1

Source File: PassiveRole.java From atomix with Apache License 2.0

6 votes

@Override
public CompletableFuture<KeepAliveResponse> onKeepAlive(KeepAliveRequest request) {
  raft.checkThread();
  logRequest(request);

  if (raft.getLeader() == null) {
    return CompletableFuture.completedFuture(logResponse(KeepAliveResponse.builder()
        .withStatus(RaftResponse.Status.ERROR)
        .withError(RaftError.Type.NO_LEADER)
        .build()));
  } else {
    return forward(request, raft.getProtocol()::keepAlive)
        .exceptionally(error -> KeepAliveResponse.builder()
            .withStatus(RaftResponse.Status.ERROR)
            .withError(RaftError.Type.NO_LEADER)
            .build())
        .thenApply(this::logResponse);
  }
}

Example #2

Source File: RaftContext.java From atomix with Apache License 2.0

6 votes

/**
 * Registers server handlers on the configured protocol.
 */
private void registerHandlers(RaftServerProtocol protocol) {
  protocol.registerOpenSessionHandler(request -> runOnContextIfReady(() -> role.onOpenSession(request), OpenSessionResponse::builder));
  protocol.registerCloseSessionHandler(request -> runOnContextIfReady(() -> role.onCloseSession(request), CloseSessionResponse::builder));
  protocol.registerKeepAliveHandler(request -> runOnContextIfReady(() -> role.onKeepAlive(request), KeepAliveResponse::builder));
  protocol.registerMetadataHandler(request -> runOnContextIfReady(() -> role.onMetadata(request), MetadataResponse::builder));
  protocol.registerConfigureHandler(request -> runOnContext(() -> role.onConfigure(request)));
  protocol.registerInstallHandler(request -> runOnContext(() -> role.onInstall(request)));
  protocol.registerJoinHandler(request -> runOnContext(() -> role.onJoin(request)));
  protocol.registerReconfigureHandler(request -> runOnContext(() -> role.onReconfigure(request)));
  protocol.registerLeaveHandler(request -> runOnContext(() -> role.onLeave(request)));
  protocol.registerTransferHandler(request -> runOnContext(() -> role.onTransfer(request)));
  protocol.registerAppendHandler(request -> runOnContext(() -> role.onAppend(request)));
  protocol.registerPollHandler(request -> runOnContext(() -> role.onPoll(request)));
  protocol.registerVoteHandler(request -> runOnContext(() -> role.onVote(request)));
  protocol.registerCommandHandler(request -> runOnContextIfReady(() -> role.onCommand(request), CommandResponse::builder));
  protocol.registerQueryHandler(request -> runOnContextIfReady(() -> role.onQuery(request), QueryResponse::builder));
}

Example #3

Source File: InactiveRole.java From atomix with Apache License 2.0

5 votes

@Override
public CompletableFuture<KeepAliveResponse> onKeepAlive(KeepAliveRequest request) {
  logRequest(request);
  return Futures.completedFuture(logResponse(KeepAliveResponse.builder()
      .withStatus(Status.ERROR)
      .withError(RaftError.Type.UNAVAILABLE)
      .build()));
}

Example #4

Source File: RaftSessionConnection.java From atomix with Apache License 2.0

5 votes

/**
 * Sends a keep alive request to the given node.
 *
 * @param request the request to send
 * @return a future to be completed with the response
 */
public CompletableFuture<KeepAliveResponse> keepAlive(KeepAliveRequest request) {
  CompletableFuture<KeepAliveResponse> future = new CompletableFuture<>();
  if (context.isCurrentContext()) {
    sendRequest(request, protocol::keepAlive, future);
  } else {
    context.execute(() -> sendRequest(request, protocol::keepAlive, future));
  }
  return future;
}

Example #5

Source File: RaftServerCommunicator.java From atomix with Apache License 2.0

4 votes

@Override
public CompletableFuture<KeepAliveResponse> keepAlive(MemberId memberId, KeepAliveRequest request) {
  return sendAndReceive(context.keepAliveSubject, request, memberId);
}

Example #6

Source File: LocalRaftServerProtocol.java From atomix with Apache License 2.0

4 votes

@Override
public void registerKeepAliveHandler(Function<KeepAliveRequest, CompletableFuture<KeepAliveResponse>> handler) {
  this.keepAliveHandler = handler;
}

Example #7

Source File: LocalRaftServerProtocol.java From atomix with Apache License 2.0

4 votes

@Override
public CompletableFuture<KeepAliveResponse> keepAlive(MemberId memberId, KeepAliveRequest request) {
  return getServer(memberId).thenCompose(listener -> listener.keepAlive(encode(request))).thenApply(this::decode);
}

Example #8

Source File: RaftServerMessagingProtocol.java From atomix with Apache License 2.0

4 votes

@Override
public void registerKeepAliveHandler(Function<KeepAliveRequest, CompletableFuture<KeepAliveResponse>> handler) {
  registerHandler("keep-alive", handler);
}

Example #9

Source File: RaftServerMessagingProtocol.java From atomix with Apache License 2.0

4 votes

@Override
public CompletableFuture<KeepAliveResponse> keepAlive(MemberId memberId, KeepAliveRequest request) {
  return sendAndReceive(memberId, "keep-alive", request);
}

Example #10

Source File: LocalRaftClientProtocol.java From atomix with Apache License 2.0

4 votes

@Override
public CompletableFuture<KeepAliveResponse> keepAlive(MemberId memberId, KeepAliveRequest request) {
  return getServer(memberId).thenCompose(protocol -> protocol.keepAlive(encode(request))).thenApply(this::decode);
}

Example #11

Source File: RaftClientMessagingProtocol.java From atomix with Apache License 2.0

4 votes

@Override
public CompletableFuture<KeepAliveResponse> keepAlive(MemberId memberId, KeepAliveRequest request) {
  return sendAndReceive(memberId, "keep-alive", request);
}

Example #12

Source File: LeaderRole.java From atomix with Apache License 2.0

4 votes

@Override
public CompletableFuture<KeepAliveResponse> onKeepAlive(KeepAliveRequest request) {
  final long term = raft.getTerm();
  final long timestamp = System.currentTimeMillis();

  raft.checkThread();
  logRequest(request);

  CompletableFuture<KeepAliveResponse> future = new CompletableFuture<>();
  appendAndCompact(new KeepAliveEntry(term, timestamp, request.sessionIds(), request.commandSequenceNumbers(), request.eventIndexes()))
      .whenCompleteAsync((entry, error) -> {
        if (error != null) {
          future.complete(logResponse(KeepAliveResponse.builder()
              .withStatus(RaftResponse.Status.ERROR)
              .withLeader(raft.getCluster().getMember().memberId())
              .withError(RaftError.Type.PROTOCOL_ERROR)
              .build()));
          return;
        }

        appender.appendEntries(entry.index()).whenComplete((commitIndex, commitError) -> {
          raft.checkThread();
          if (isRunning()) {
            if (commitError == null) {
              raft.getServiceManager().<long[]>apply(entry.index()).whenCompleteAsync((sessionResult, sessionError) -> {
                if (sessionError == null) {
                  future.complete(logResponse(KeepAliveResponse.builder()
                      .withStatus(RaftResponse.Status.OK)
                      .withLeader(raft.getCluster().getMember().memberId())
                      .withMembers(raft.getCluster().getMembers().stream()
                          .map(RaftMember::memberId)
                          .filter(m -> m != null)
                          .collect(Collectors.toList()))
                      .withSessionIds(sessionResult)
                      .build()));
                } else if (sessionError instanceof CompletionException && sessionError.getCause() instanceof RaftException) {
                  future.complete(logResponse(KeepAliveResponse.builder()
                      .withStatus(RaftResponse.Status.ERROR)
                      .withLeader(raft.getCluster().getMember().memberId())
                      .withError(((RaftException) sessionError.getCause()).getType(), sessionError.getMessage())
                      .build()));
                } else if (sessionError instanceof RaftException) {
                  future.complete(logResponse(KeepAliveResponse.builder()
                      .withStatus(RaftResponse.Status.ERROR)
                      .withLeader(raft.getCluster().getMember().memberId())
                      .withError(((RaftException) sessionError).getType(), sessionError.getMessage())
                      .build()));
                } else {
                  future.complete(logResponse(KeepAliveResponse.builder()
                      .withStatus(RaftResponse.Status.ERROR)
                      .withLeader(raft.getCluster().getMember().memberId())
                      .withError(RaftError.Type.PROTOCOL_ERROR, sessionError.getMessage())
                      .build()));
                }
              }, raft.getThreadContext());
            } else {
              future.complete(logResponse(KeepAliveResponse.builder()
                  .withStatus(RaftResponse.Status.ERROR)
                  .withLeader(raft.getCluster().getMember().memberId())
                  .withError(RaftError.Type.PROTOCOL_ERROR)
                  .build()));
            }
          } else {
            RaftMember leader = raft.getLeader();
            future.complete(logResponse(KeepAliveResponse.builder()
                .withStatus(RaftResponse.Status.ERROR)
                .withLeader(leader != null ? leader.memberId() : null)
                .withError(RaftError.Type.ILLEGAL_MEMBER_STATE)
                .build()));
          }
        });
      }, raft.getThreadContext());

  return future;
}

Example #13

Source File: RaftClientCommunicator.java From atomix with Apache License 2.0

4 votes

@Override
public CompletableFuture<KeepAliveResponse> keepAlive(MemberId memberId, KeepAliveRequest request) {
  return sendAndReceive(context.keepAliveSubject, request, memberId);
}

Example #14

Source File: RaftServerCommunicator.java From atomix with Apache License 2.0

4 votes

@Override
public void registerKeepAliveHandler(Function<KeepAliveRequest, CompletableFuture<KeepAliveResponse>> handler) {
  clusterCommunicator.subscribe(context.keepAliveSubject, serializer::decode, handler, serializer::encode);
}

Example #15

Source File: RaftClientMessagingProtocol.java From submarine with Apache License 2.0

4 votes

@Override
public CompletableFuture<KeepAliveResponse> keepAlive(MemberId memberId,
                                                      KeepAliveRequest request) {
  return sendAndReceive(memberId, "keep-alive", request);
}

Example #16

Source File: LocalRaftServerProtocol.java From zeppelin with Apache License 2.0

4 votes

@Override
public void registerKeepAliveHandler(Function<KeepAliveRequest,
    CompletableFuture<KeepAliveResponse>> handler) {
  this.keepAliveHandler = handler;
}

Example #17

Source File: LocalRaftServerProtocol.java From zeppelin with Apache License 2.0

4 votes

@Override
public CompletableFuture<KeepAliveResponse> keepAlive(MemberId memberId,
                                                      KeepAliveRequest request) {
  return getServer(memberId).thenCompose(listener ->
      listener.keepAlive(encode(request))).thenApply(this::decode);
}

Example #18

Source File: RaftServerMessagingProtocol.java From zeppelin with Apache License 2.0

4 votes

@Override
public void registerKeepAliveHandler(Function<KeepAliveRequest,
    CompletableFuture<KeepAliveResponse>> handler) {
  registerHandler("keep-alive", handler);
}

Example #19

Source File: RaftServerMessagingProtocol.java From zeppelin with Apache License 2.0

4 votes

@Override
public CompletableFuture<KeepAliveResponse> keepAlive(MemberId memberId,
                                                      KeepAliveRequest request) {
  return sendAndReceive(memberId, "keep-alive", request);
}

Example #20

Source File: LocalRaftClientProtocol.java From zeppelin with Apache License 2.0

4 votes

@Override
public CompletableFuture<KeepAliveResponse> keepAlive(MemberId memberId,
                                                      KeepAliveRequest request) {
  return getServer(memberId).thenCompose(protocol ->
      protocol.keepAlive(encode(request))).thenApply(this::decode);
}

Example #21

Source File: RaftClientMessagingProtocol.java From zeppelin with Apache License 2.0

4 votes

@Override
public CompletableFuture<KeepAliveResponse> keepAlive(MemberId memberId,
                                                      KeepAliveRequest request) {
  return sendAndReceive(memberId, "keep-alive", request);
}

Example #22

Source File: LocalRaftServerProtocol.java From submarine with Apache License 2.0

4 votes

@Override
public void registerKeepAliveHandler(Function<KeepAliveRequest,
    CompletableFuture<KeepAliveResponse>> handler) {
  this.keepAliveHandler = handler;
}

Example #23

Source File: LocalRaftServerProtocol.java From submarine with Apache License 2.0

4 votes

@Override
public CompletableFuture<KeepAliveResponse> keepAlive(MemberId memberId,
                                                      KeepAliveRequest request) {
  return getServer(memberId).thenCompose(listener ->
      listener.keepAlive(encode(request))).thenApply(this::decode);
}

Example #24

Source File: RaftServerMessagingProtocol.java From submarine with Apache License 2.0

4 votes

@Override
public void registerKeepAliveHandler(Function<KeepAliveRequest,
    CompletableFuture<KeepAliveResponse>> handler) {
  registerHandler("keep-alive", handler);
}

Example #25

Source File: RaftServerMessagingProtocol.java From submarine with Apache License 2.0

4 votes

@Override
public CompletableFuture<KeepAliveResponse> keepAlive(MemberId memberId,
                                                      KeepAliveRequest request) {
  return sendAndReceive(memberId, "keep-alive", request);
}

Example #26

Source File: LocalRaftClientProtocol.java From submarine with Apache License 2.0

4 votes

@Override
public CompletableFuture<KeepAliveResponse> keepAlive(MemberId memberId,
                                                      KeepAliveRequest request) {
  return getServer(memberId).thenCompose(protocol ->
      protocol.keepAlive(encode(request))).thenApply(this::decode);
}

Example #27

Source File: RaftRole.java From atomix with Apache License 2.0

2 votes

/**
 * Handles a keep alive request.
 *
 * @param request The request to handle.
 * @return A completable future to be completed with the request response.
 */
CompletableFuture<KeepAliveResponse> onKeepAlive(KeepAliveRequest request);