/// <summary>
/// Acquires a valid token id owned by us or throws.
/// </summary>
private int AcquireTokenOrThrow()
{
lock (this)
{
LockToken currentToken = _lockTokenStateMachine.currentToken();
if (_myself.Equals(currentToken.Owner()))
{
return(currentToken.Id());
}
/* If we are not the leader then we will not even attempt to get the token,
* since only the leader should take locks. */
EnsureLeader();
ReplicatedLockTokenRequest lockTokenRequest = new ReplicatedLockTokenRequest(_myself, LockToken.nextCandidateId(currentToken.Id()));
Future <object> future;
try
{
future = _replicator.replicate(lockTokenRequest, true);
}
catch (ReplicationFailureException e)
{
throw new AcquireLockTimeoutException(e, "Replication failure acquiring lock token.", ReplicationFailure);
}
try
{
bool success = ( bool )future.get();
if (success)
{
return(lockTokenRequest.Id());
}
else
{
throw new AcquireLockTimeoutException("Failed to acquire lock token. Was taken by another candidate.", NotALeader);
}
}
catch (ExecutionException e)
{
throw new AcquireLockTimeoutException(e, "Failed to acquire lock token.", NotALeader);
}
catch (InterruptedException e)
{
Thread.CurrentThread.Interrupt();
throw new AcquireLockTimeoutException(e, "Failed to acquire lock token.", Interrupted);
}
}
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: public static void marshal(ReplicatedLockTokenRequest tokenRequest, org.neo4j.storageengine.api.WritableChannel channel) throws java.io.IOException
public static void Marshal(ReplicatedLockTokenRequest tokenRequest, WritableChannel channel)
{
channel.PutInt(tokenRequest.Id());
(new MemberId.Marshal()).marshal(tokenRequest.Owner(), channel);
}