@Override public synchronized CompletableFuture<RaftResponseMessage> send(final RaftRequestMessage request) { this.logger.debug(String.format("trying to send message %s to server %d at endpoint %s", request.getMessageType().toString(), request.getDestination(), this.remote.toString())); CompletableFuture<RaftResponseMessage> result = new CompletableFuture<RaftResponseMessage>(); if(this.connection == null || !this.connection.isOpen()){ try{ this.connection = AsynchronousSocketChannel.open(this.channelGroup); this.connection.connect(this.remote, new AsyncTask<RaftRequestMessage>(request, result), handlerFrom((Void v, AsyncTask<RaftRequestMessage> task) -> { sendAndRead(task, false); })); }catch(Throwable error){ closeSocket(); result.completeExceptionally(error); } }else{ this.sendAndRead(new AsyncTask<RaftRequestMessage>(request, result), false); } return result; }
@Override public synchronized CompletableFuture<RaftResponseMessage> send(final RaftRequestMessage request) { this.logger.debug(String.format("trying to send message %s to server %d at endpoint %s", request.getMessageType().toString(), request.getDestination(), this.remote.toString())); CompletableFuture<RaftResponseMessage> result = new CompletableFuture<RaftResponseMessage>(); if(this.connection == null || !this.connection.isOpen()){ try{ this.connection = AsynchronousSocketChannel.open(this.channelGroup); this.connection.connect(this.remote, new AsyncTask<RaftRequestMessage>(request, result), handlerFrom((Void v, AsyncTask<RaftRequestMessage> task) -> { sendAndRead(task, false); })); }catch(Throwable error){ closeSocket(); result.completeExceptionally(error); } }else{ this.sendAndRead(new AsyncTask<RaftRequestMessage>(request, result), false); } return result; }
@Override public Void call() throws Exception { self.logger.debug("retrying the request %s", request.getMessageType().toString()); server.SendRequest(request).whenCompleteAsync((RaftResponseMessage furtherResponse, Throwable furtherError) -> { self.handleExtendedResponse(furtherResponse, furtherError); }, self.context.getScheduledExecutor()); return null; }}, server.getCurrentHeartbeatInterval(), TimeUnit.MILLISECONDS); }
@Override public Void call() throws Exception { self.logger.debug("retrying the request %s", request.getMessageType().toString()); server.SendRequest(request).whenCompleteAsync((RaftResponseMessage furtherResponse, Throwable furtherError) -> { self.handleExtendedResponse(furtherResponse, furtherError); }, self.context.getScheduledExecutor()); return null; }}, server.getCurrentHeartbeatInterval(), TimeUnit.MILLISECONDS); }
@Override public Void call() throws Exception { self.logger.debug("retrying the request %s", request.getMessageType().toString()); server.SendRequest(request).whenCompleteAsync((RaftResponseMessage furtherResponse, Throwable furtherError) -> { self.handleExtendedResponse(furtherResponse, furtherError); }, self.context.getScheduledExecutor()); return null; }}, server.getCurrentHeartbeatInterval(), TimeUnit.MILLISECONDS); }
private synchronized RaftResponseMessage handleExtendedMessages(RaftRequestMessage request){ if(request.getMessageType() == RaftMessageType.AddServerRequest){ return this.handleAddServerRequest(request); }else if(request.getMessageType() == RaftMessageType.RemoveServerRequest){ return this.handleRemoveServerRequest(request); }else if(request.getMessageType() == RaftMessageType.SyncLogRequest){ return this.handleLogSyncRequest(request); }else if(request.getMessageType() == RaftMessageType.JoinClusterRequest){ return this.handleJoinClusterRequest(request); }else if(request.getMessageType() == RaftMessageType.LeaveClusterRequest){ return this.handleLeaveClusterRequest(request); }else if(request.getMessageType() == RaftMessageType.InstallSnapshotRequest){ return this.handleInstallSnapshotRequest(request); }else{ this.logger.error("receive an unknown request %s, for safety, step down.", request.getMessageType().toString()); System.exit(-1); } return null; }
response.getMessageType().toString(), response.getSource(), String.valueOf(response.isAccepted()), this.handleInstallSnapshotResponse(response); }else{ this.logger.error("Received an unexpected message %s for response, system exits.", response.getMessageType().toString()); this.stateMachine.exit(-1);
response.getMessageType().toString(), response.getSource(), String.valueOf(response.isAccepted()), this.handleInstallSnapshotResponse(response); }else{ this.logger.error("Received an unexpected message %s for response, system exits.", response.getMessageType().toString()); this.stateMachine.exit(-1);
this.logger.debug( "Receive a %s message from %d with LastLogIndex=%d, LastLogTerm=%d, EntriesLength=%d, CommitIndex=%d and Term=%d", request.getMessageType().toString(), request.getSource(), request.getLastLogIndex(), this.logger.debug( "Response back a %s message to %d with Accepted=%s, Term=%d, NextIndex=%d", response.getMessageType().toString(), response.getDestination(), String.valueOf(response.isAccepted()),
this.logger.debug( "Receive a %s message from %d with LastLogIndex=%d, LastLogTerm=%d, EntriesLength=%d, CommitIndex=%d and Term=%d", request.getMessageType().toString(), request.getSource(), request.getLastLogIndex(), this.logger.debug( "Response back a %s message to %d with Accepted=%s, Term=%d, NextIndex=%d", response.getMessageType().toString(), response.getDestination(), String.valueOf(response.isAccepted()),
this.logger.debug( "Receive a %s message from %d with LastLogIndex=%d, LastLogTerm=%d, EntriesLength=%d, CommitIndex=%d and Term=%d", request.getMessageType().toString(), request.getSource(), request.getLastLogIndex(), this.logger.debug( "Response back a %s message to %d with Accepted=%s, Term=%d, NextIndex=%d", response.getMessageType().toString(), response.getDestination(), String.valueOf(response.isAccepted()),
private void requestVote(){ // vote for self this.logger.info("requestVote started with term %d", this.state.getTerm()); this.state.setVotedFor(this.id); this.context.getServerStateManager().persistState(this.state); this.votesGranted += 1; this.votedServers.add(this.id); // this is the only server? if(this.votesGranted > (this.peers.size() + 1) / 2){ this.electionCompleted = true; this.becomeLeader(); return; } for(PeerServer peer : this.peers.values()){ RaftRequestMessage request = new RaftRequestMessage(); request.setMessageType(RaftMessageType.RequestVoteRequest); request.setDestination(peer.getId()); request.setSource(this.id); request.setLastLogIndex(this.logStore.getFirstAvailableIndex() - 1); request.setLastLogTerm(this.termForLastLog(this.logStore.getFirstAvailableIndex() - 1)); request.setTerm(this.state.getTerm()); this.logger.debug("send %s to server %d with term %d", RaftMessageType.RequestVoteRequest.toString(), peer.getId(), this.state.getTerm()); peer.SendRequest(request).whenCompleteAsync((RaftResponseMessage response, Throwable error) -> { handlePeerResponse(response, error); }, this.context.getScheduledExecutor()); } }
private synchronized RaftResponseMessage handleExtendedMessages(RaftRequestMessage request){ if(request.getMessageType() == RaftMessageType.AddServerRequest){ return this.handleAddServerRequest(request); }else if(request.getMessageType() == RaftMessageType.RemoveServerRequest){ return this.handleRemoveServerRequest(request); }else if(request.getMessageType() == RaftMessageType.SyncLogRequest){ return this.handleLogSyncRequest(request); }else if(request.getMessageType() == RaftMessageType.JoinClusterRequest){ return this.handleJoinClusterRequest(request); }else if(request.getMessageType() == RaftMessageType.LeaveClusterRequest){ return this.handleLeaveClusterRequest(request); }else if(request.getMessageType() == RaftMessageType.InstallSnapshotRequest){ return this.handleInstallSnapshotRequest(request); }else{ this.logger.error("receive an unknown request %s, for safety, step down.", request.getMessageType().toString()); this.stateMachine.exit(-1); } return null; }
private void requestVote(){ // vote for self this.logger.info("requestVote started with term %d", this.state.getTerm()); this.state.setVotedFor(this.id); this.context.getServerStateManager().persistState(this.state); this.votesGranted += 1; this.votesResponded += 1; // this is the only server? if(this.votesGranted > (this.peers.size() + 1) / 2){ this.electionCompleted = true; this.becomeLeader(); return; } for(PeerServer peer : this.peers.values()){ RaftRequestMessage request = new RaftRequestMessage(); request.setMessageType(RaftMessageType.RequestVoteRequest); request.setDestination(peer.getId()); request.setSource(this.id); request.setLastLogIndex(this.logStore.getFirstAvailableIndex() - 1); request.setLastLogTerm(this.termForLastLog(this.logStore.getFirstAvailableIndex() - 1)); request.setTerm(this.state.getTerm()); this.logger.debug("send %s to server %d with term %d", RaftMessageType.RequestVoteRequest.toString(), peer.getId(), this.state.getTerm()); peer.SendRequest(request).whenCompleteAsync((RaftResponseMessage response, Throwable error) -> { handlePeerResponse(response, error); }, this.context.getScheduledExecutor()); } }
private synchronized RaftResponseMessage handleExtendedMessages(RaftRequestMessage request){ if(request.getMessageType() == RaftMessageType.AddServerRequest){ return this.handleAddServerRequest(request); }else if(request.getMessageType() == RaftMessageType.RemoveServerRequest){ return this.handleRemoveServerRequest(request); }else if(request.getMessageType() == RaftMessageType.SyncLogRequest){ return this.handleLogSyncRequest(request); }else if(request.getMessageType() == RaftMessageType.JoinClusterRequest){ return this.handleJoinClusterRequest(request); }else if(request.getMessageType() == RaftMessageType.LeaveClusterRequest){ return this.handleLeaveClusterRequest(request); }else if(request.getMessageType() == RaftMessageType.InstallSnapshotRequest){ return this.handleInstallSnapshotRequest(request); }else{ this.logger.error("receive an unknown request %s, for safety, step down.", request.getMessageType().toString()); this.stateMachine.exit(-1); } return null; }
private void requestVote(){ // vote for self this.logger.info("requestVote started with term %d", this.state.getTerm()); this.state.setVotedFor(this.id); this.context.getServerStateManager().persistState(this.state); this.votesGranted += 1; this.votesResponded += 1; // this is the only server? if(this.votesGranted > (this.peers.size() + 1) / 2){ this.electionCompleted = true; this.becomeLeader(); return; } for(PeerServer peer : this.peers.values()){ RaftRequestMessage request = new RaftRequestMessage(); request.setMessageType(RaftMessageType.RequestVoteRequest); request.setDestination(peer.getId()); request.setSource(this.id); request.setLastLogIndex(this.logStore.getFirstAvailableIndex() - 1); request.setLastLogTerm(this.termForLastLog(this.logStore.getFirstAvailableIndex() - 1)); request.setTerm(this.state.getTerm()); this.logger.debug("send %s to server %d with term %d", RaftMessageType.RequestVoteRequest.toString(), peer.getId(), this.state.getTerm()); peer.SendRequest(request).whenCompleteAsync((RaftResponseMessage response, Throwable error) -> { handlePeerResponse(response, error); }, this.context.getScheduledExecutor()); } }
response.getMessageType().toString(), response.getSource(), String.valueOf(response.isAccepted()),
response.getMessageType().toString(), response.getSource(), String.valueOf(response.isAccepted()),
response.getMessageType().toString(), response.getSource(), String.valueOf(response.isAccepted()),