public bool Execute(CommandProcessorContext context, string[] args)
{
bool forward = true;
long commitPos = 0;
long preparePos = 0;
bool posOverriden = false;
bool resolveLinkTos = false;
bool requireMaster = false;
if (args.Length > 0)
{
if (args.Length != 1 && args.Length != 3 && args.Length != 4)
return false;
if (args[0].ToUpper() == "F")
forward = true;
else if (args[0].ToUpper() == "B")
forward = false;
else
return false;
if (args.Length >= 3)
{
posOverriden = true;
if (!long.TryParse(args[1], out commitPos) || !long.TryParse(args[2], out preparePos))
return false;
}
if (args.Length >= 4)
requireMaster = bool.Parse(args[3]);
}
if (!posOverriden)
{
commitPos = forward ? 0 : -1;
preparePos = forward ? 0 : -1;
}
context.IsAsync();
int total = 0;
var sw = new Stopwatch();
var tcpCommand = forward ? TcpCommand.ReadAllEventsForward : TcpCommand.ReadAllEventsBackward;
context.Client.CreateTcpConnection(
context,
connectionEstablished: conn =>
{
context.Log.Info("[{0}, L{1}]: Reading all {2}...", conn.RemoteEndPoint, conn.LocalEndPoint, forward ? "FORWARD" : "BACKWARD");
var readDto = new TcpClientMessageDto.ReadAllEvents(commitPos, preparePos, 10, resolveLinkTos, requireMaster);
var package = new TcpPackage(tcpCommand, Guid.NewGuid(), readDto.Serialize()).AsByteArray();
sw.Start();
conn.EnqueueSend(package);
},
handlePackage: (conn, pkg) =>
{
if (pkg.Command != tcpCommand)
{
context.Fail(reason: string.Format("Unexpected TCP package: {0}.", pkg.Command));
return;
}
var dto = pkg.Data.Deserialize<TcpClientMessageDto.ReadAllEventsCompleted>();
if (dto.Events.IsEmpty())
{
sw.Stop();
context.Log.Info("=== Reading ALL {2} completed in {0}. Total read: {1}", sw.Elapsed, total, forward ? "FORWARD" : "BACKWARD");
context.Success();
conn.Close();
return;
}
var sb = new StringBuilder();
for (int i = 0; i < dto.Events.Length; ++i)
{
var evnt = dto.Events[i].Event;
sb.AppendFormat("\n{0}:\tStreamId: {1},\n\tEventNumber: {2},\n\tData:\n{3},\n\tEventType: {4}\n",
total,
evnt.EventStreamId,
evnt.EventNumber,
Helper.UTF8NoBom.GetString(evnt.Data),
evnt.EventType);
total += 1;
}
context.Log.Info("Next {0} events read:\n{1}", dto.Events.Length, sb.ToString());
var readDto = new TcpClientMessageDto.ReadAllEvents(dto.NextCommitPosition, dto.NextPreparePosition, 10, resolveLinkTos, requireMaster);
var package = new TcpPackage(tcpCommand, Guid.NewGuid(), readDto.Serialize()).AsByteArray();
conn.EnqueueSend(package);
},
connectionClosed: (connection, error) => context.Fail(reason: "Connection was closed prematurely."));
context.WaitForCompletion();
return true;
}
public bool Execute(CommandProcessorContext context, string[] args)
{
bool forward = true;
long commitPos = 0;
long preparePos = 0;
bool posOverriden = false;
if (args.Length > 0)
{
if (args.Length != 1 && args.Length != 3)
return false;
if (args[0].ToUpper() == "F")
forward = true;
else if (args[0].ToUpper() == "B")
forward = false;
else
return false;
if (args.Length == 3)
{
posOverriden = true;
if (!long.TryParse(args[1], out commitPos) || !long.TryParse(args[2], out preparePos))
return false;
}
}
if (!posOverriden)
{
commitPos = forward ? 0 : -1;
preparePos = forward ? 0 : -1;
}
context.IsAsync();
int total = 0;
var sw = new Stopwatch();
context.Client.CreateTcpConnection(
context,
connectionEstablished: conn =>
{
context.Log.Info("[{0}]: Reading all {0}...", conn.EffectiveEndPoint, forward ? "FORWARD" : "BACKWARD");
sw.Start();
var readDto = new TcpClientMessageDto.ReadAllEvents(commitPos, preparePos, 10, false);
var package = new TcpPackage(forward ? TcpCommand.ReadAllEventsForward : TcpCommand.ReadAllEventsBackward,
Guid.NewGuid(),
readDto.Serialize());
conn.EnqueueSend(package.AsByteArray());
},
handlePackage: (conn, pkg) =>
{
TcpClientMessageDto.ResolvedEvent[] records;
long nextCommitPos;
long nextPreparePos;
if (forward)
{
if (pkg.Command != TcpCommand.ReadAllEventsForwardCompleted)
{
context.Fail(reason: string.Format("Unexpected TCP package: {0}.", pkg.Command));
return;
}
var dto = pkg.Data.Deserialize<TcpClientMessageDto.ReadAllEventsCompleted>();
records = dto.Events;
nextCommitPos = dto.NextCommitPosition;
nextPreparePos = dto.NextPreparePosition;
}
else
{
if (pkg.Command != TcpCommand.ReadAllEventsBackwardCompleted)
{
context.Fail(reason: string.Format("Unexpected TCP package: {0}.", pkg.Command));
return;
}
var dto = pkg.Data.Deserialize<TcpClientMessageDto.ReadAllEventsCompleted>();
records = dto.Events;
nextCommitPos = dto.NextCommitPosition;
nextPreparePos = dto.NextPreparePosition;
}
if (records == null || records.Length == 0)
{
sw.Stop();
context.Log.Info("=== Reading ALL {2} completed in {0}. Total read: {1}",
sw.Elapsed,
total,
forward ? "FORWARD" : "BACKWARD");
conn.Close();
context.Success();
return;
}
var sb = new StringBuilder();
for (int i = 0; i < records.Length; ++i)
{
var evnt = records[i].Event;
sb.AppendFormat("\n{0}:\tStreamId: {1},\n\tEventNumber: {2},\n\tData:\n{3},\n\tEventType: {4}\n",
total,
evnt.EventStreamId,
evnt.EventNumber,
Encoding.UTF8.GetString(evnt.Data),
evnt.EventType);
total += 1;
}
context.Log.Info("Next {0} events read:\n{1}", records.Length, sb.ToString());
var readDto = new TcpClientMessageDto.ReadAllEvents(nextCommitPos, nextPreparePos, 10, false);
var package = new TcpPackage(forward ? TcpCommand.ReadAllEventsForward : TcpCommand.ReadAllEventsBackward,
Guid.NewGuid(),
readDto.Serialize());
conn.EnqueueSend(package.AsByteArray());
},
connectionClosed: (connection, error) =>
{
if (error == SocketError.Success)
context.Success();
else
context.Fail();
});
context.WaitForCompletion();
return true;
}