Java Code Examples for org.apache.ratis.proto.RaftProtos.RaftPeerRole#LEADER

The following examples show how to use org.apache.ratis.proto.RaftProtos.RaftPeerRole#LEADER . 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: ArithmeticStateMachine.java    From incubator-ratis with Apache License 2.0 6 votes vote down vote up 
@Override
public CompletableFuture<Message> applyTransaction(TransactionContext trx) {
  final LogEntryProto entry = trx.getLogEntry();
  final AssignmentMessage assignment = new AssignmentMessage(entry.getStateMachineLogEntry().getLogData());

  final long index = entry.getIndex();
  final Double result;
  try(AutoCloseableLock writeLock = writeLock()) {
    result = assignment.evaluate(variables);
    updateLastAppliedTermIndex(entry.getTerm(), index);
  }
  final Expression r = Expression.Utils.double2Expression(result);
  final CompletableFuture<Message> f = CompletableFuture.completedFuture(Expression.Utils.toMessage(r));

  final RaftPeerRole role = trx.getServerRole();
  if (role == RaftPeerRole.LEADER) {
    LOG.info("{}:{}-{}: {} = {}", role, getId(), index, assignment, r);
  } else {
    LOG.debug("{}:{}-{}: {} = {}", role, getId(), index, assignment, r);
  }
  if (LOG.isTraceEnabled()) {
    LOG.trace("{}-{}: variables={}", getId(), index, variables);
  }
  return f;
}
Example 2
Source File: ArithmeticStateMachine.java    From ratis with Apache License 2.0 6 votes vote down vote up 
@Override
public CompletableFuture<Message> applyTransaction(TransactionContext trx) {
  final LogEntryProto entry = trx.getLogEntry();
  final AssignmentMessage assignment = new AssignmentMessage(entry.getStateMachineLogEntry().getLogData());

  final long index = entry.getIndex();
  final Double result;
  try(final AutoCloseableLock writeLock = writeLock()) {
    result = assignment.evaluate(variables);
    updateLastAppliedTermIndex(entry.getTerm(), index);
  }
  final Expression r = Expression.Utils.double2Expression(result);
  final CompletableFuture<Message> f = CompletableFuture.completedFuture(Expression.Utils.toMessage(r));

  final RaftPeerRole role = trx.getServerRole();
  if (role == RaftPeerRole.LEADER) {
    LOG.info("{}:{}-{}: {} = {}", role, getId(), index, assignment, r);
  } else {
    LOG.debug("{}:{}-{}: {} = {}", role, getId(), index, assignment, r);
  }
  if (LOG.isTraceEnabled()) {
    LOG.trace("{}-{}: variables={}", getId(), index, variables);
  }
  return f;
}
Example 3
Source File: OzoneManagerRatisServer.java    From hadoop-ozone with Apache License 2.0 5 votes vote down vote up 
/**
 * Check the cached leader status.
 * @return true if cached role is Leader, false otherwise.
 */
private boolean checkCachedPeerRoleIsLeader() {
  this.roleCheckLock.readLock().lock();
  try {
    if (cachedPeerRole.isPresent() &&
        cachedPeerRole.get() == RaftPeerRole.LEADER) {
      return true;
    }
    return false;
  } finally {
    this.roleCheckLock.readLock().unlock();
  }
}
Example 4
Source File: TransactionContextImpl.java    From incubator-ratis with Apache License 2.0 5 votes vote down vote up 
/**
 * Construct a {@link TransactionContext} from a client request.
 * Used by the state machine to start a transaction
 * and send the Log entry representing the transaction data
 * to be applied to the raft log.
 */
public TransactionContextImpl(
    StateMachine stateMachine, RaftClientRequest clientRequest,
    StateMachineLogEntryProto smLogEntryProto, Object stateMachineContext) {
  this(RaftPeerRole.LEADER, stateMachine);
  this.clientRequest = clientRequest;
  this.smLogEntryProto = smLogEntryProto != null? smLogEntryProto
      : ServerProtoUtils.toStateMachineLogEntryProto(clientRequest, null, null);
  this.stateMachineContext = stateMachineContext;
}
Example 5
Source File: TransactionContextImpl.java    From ratis with Apache License 2.0 5 votes vote down vote up 
/**
 * Construct a {@link TransactionContext} from a client request.
 * Used by the state machine to start a transaction
 * and send the Log entry representing the transaction data
 * to be applied to the raft log.
 */
public TransactionContextImpl(
    StateMachine stateMachine, RaftClientRequest clientRequest,
    StateMachineLogEntryProto smLogEntryProto, Object stateMachineContext) {
  this(RaftPeerRole.LEADER, stateMachine);
  this.clientRequest = clientRequest;
  this.smLogEntryProto = smLogEntryProto != null? smLogEntryProto
      : ServerProtoUtils.toStateMachineLogEntryProto(clientRequest, null, null);
  this.stateMachineContext = stateMachineContext;
}
Example 6
Source File: RoleInfo.java    From incubator-ratis with Apache License 2.0 4 votes vote down vote up 
boolean isLeader() {
  return role == RaftPeerRole.LEADER;
}
Example 7
Source File: RoleInfo.java    From ratis with Apache License 2.0 4 votes vote down vote up 
boolean isLeader() {
  return role == RaftPeerRole.LEADER;
}