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FairMQ/fairmq/zeromq/FairMQSocketZMQ.cxx
Alexey Rybalchenko c66fd6fe91 Adding multiple transports support & other fixes: 
- Avoid polling when only one input channel is used.
 - Send only handles for shared memory transport.
 - Avoid waiting in the rate logger thread when nothing to log.
 - Hide warnings from generated files
 - Fix #483
2017-02-23 06:47:09 +01:00

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/********************************************************************************
* Copyright (C) 2014 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH *
* *
* This software is distributed under the terms of the *
* GNU Lesser General Public Licence version 3 (LGPL) version 3, *
* copied verbatim in the file "LICENSE" *
********************************************************************************/
/**
* FairMQSocketZMQ.cxx
*
* @since 2012-12-05
* @author D. Klein, A. Rybalchenko
*/
#include <sstream>
#include <zmq.h>
#include "FairMQSocketZMQ.h"
#include "FairMQMessageZMQ.h"
#include "FairMQLogger.h"
using namespace std;
// Context to hold the ZeroMQ sockets
unique_ptr<FairMQContextZMQ> FairMQSocketZMQ::fContext = unique_ptr<FairMQContextZMQ>(new FairMQContextZMQ(1));
atomic<bool> FairMQSocketZMQ::fInterrupted(false);
FairMQSocketZMQ::FairMQSocketZMQ(const string& type, const string& name, const int numIoThreads, const string& id /*= ""*/)
: FairMQSocket(ZMQ_SNDMORE, ZMQ_RCVMORE, ZMQ_DONTWAIT)
, fSocket(NULL)
, fId()
, fBytesTx(0)
, fBytesRx(0)
, fMessagesTx(0)
, fMessagesRx(0)
{
fId = id + "." + name + "." + type;
if (zmq_ctx_set(fContext->GetContext(), ZMQ_IO_THREADS, numIoThreads) != 0)
{
LOG(ERROR) << "Failed configuring context, reason: " << zmq_strerror(errno);
}
fSocket = zmq_socket(fContext->GetContext(), GetConstant(type));
if (fSocket == NULL)
{
LOG(ERROR) << "Failed creating socket " << fId << ", reason: " << zmq_strerror(errno);
exit(EXIT_FAILURE);
}
if (zmq_setsockopt(fSocket, ZMQ_IDENTITY, fId.c_str(), fId.length()) != 0)
{
LOG(ERROR) << "Failed setting ZMQ_IDENTITY socket option, reason: " << zmq_strerror(errno);
}
// Tell socket to try and send/receive outstanding messages for <linger> milliseconds before terminating.
// Default value for ZeroMQ is -1, which is to wait forever.
int linger = 1000;
if (zmq_setsockopt(fSocket, ZMQ_LINGER, &linger, sizeof(linger)) != 0)
{
LOG(ERROR) << "Failed setting ZMQ_LINGER socket option, reason: " << zmq_strerror(errno);
}
int sndTimeout = 700;
if (zmq_setsockopt(fSocket, ZMQ_SNDTIMEO, &sndTimeout, sizeof(sndTimeout)) != 0)
{
LOG(ERROR) << "Failed setting ZMQ_SNDTIMEO socket option, reason: " << zmq_strerror(errno);
}
int rcvTimeout = 700;
if (zmq_setsockopt(fSocket, ZMQ_RCVTIMEO, &rcvTimeout, sizeof(rcvTimeout)) != 0)
{
LOG(ERROR) << "Failed setting ZMQ_RCVTIMEO socket option, reason: " << zmq_strerror(errno);
}
if (type == "sub")
{
if (zmq_setsockopt(fSocket, ZMQ_SUBSCRIBE, NULL, 0) != 0)
{
LOG(ERROR) << "Failed setting ZMQ_SUBSCRIBE socket option, reason: " << zmq_strerror(errno);
}
}
// LOG(INFO) << "created socket " << fId;
}
string FairMQSocketZMQ::GetId()
{
return fId;
}
bool FairMQSocketZMQ::Bind(const string& address)
{
// LOG(INFO) << "bind socket " << fId << " on " << address;
if (zmq_bind(fSocket, address.c_str()) != 0)
{
if (errno == EADDRINUSE) {
// do not print error in this case, this is handled by FairMQDevice in case no connection could be established after trying a number of random ports from a range.
return false;
}
LOG(ERROR) << "Failed binding socket " << fId << ", reason: " << zmq_strerror(errno);
return false;
}
return true;
}
void FairMQSocketZMQ::Connect(const string& address)
{
// LOG(INFO) << "connect socket " << fId << " on " << address;
if (zmq_connect(fSocket, address.c_str()) != 0)
{
LOG(ERROR) << "Failed connecting socket " << fId << ", reason: " << zmq_strerror(errno);
// error here means incorrect configuration. exit if it happens.
exit(EXIT_FAILURE);
}
}
int FairMQSocketZMQ::Send(FairMQMessagePtr& msg, const int flags)
{
int nbytes = -1;
while (true)
{
nbytes = zmq_msg_send(static_cast<zmq_msg_t*>(msg->GetMessage()), fSocket, flags);
if (nbytes >= 0)
{
fBytesTx += nbytes;
++fMessagesTx;
return nbytes;
}
else if (zmq_errno() == EAGAIN)
{
if (!fInterrupted && ((flags & ZMQ_DONTWAIT) == 0))
{
continue;
}
else
{
return -2;
}
}
else if (zmq_errno() == ETERM)
{
LOG(INFO) << "terminating socket " << fId;
return -1;
}
else
{
LOG(ERROR) << "Failed sending on socket " << fId << ", reason: " << zmq_strerror(errno);
return nbytes;
}
}
}
int FairMQSocketZMQ::Receive(FairMQMessagePtr& msg, const int flags)
{
int nbytes = -1;
while (true)
{
nbytes = zmq_msg_recv(static_cast<zmq_msg_t*>(msg->GetMessage()), fSocket, flags);
if (nbytes >= 0)
{
fBytesRx += nbytes;
++fMessagesRx;
return nbytes;
}
else if (zmq_errno() == EAGAIN)
{
if (!fInterrupted && ((flags & ZMQ_DONTWAIT) == 0))
{
continue;
}
else
{
return -2;
}
}
else if (zmq_errno() == ETERM)
{
LOG(INFO) << "terminating socket " << fId;
return -1;
}
else
{
LOG(ERROR) << "Failed receiving on socket " << fId << ", reason: " << zmq_strerror(errno);
return nbytes;
}
}
}
int64_t FairMQSocketZMQ::Send(vector<unique_ptr<FairMQMessage>>& msgVec, const int flags)
{
const unsigned int vecSize = msgVec.size();
// Sending vector typicaly handles more then one part
if (vecSize > 1)
{
int64_t totalSize = 0;
int nbytes = -1;
bool repeat = false;
while (true)
{
totalSize = 0;
nbytes = -1;
repeat = false;
for (unsigned int i = 0; i < vecSize; ++i)
{
nbytes = zmq_msg_send(static_cast<zmq_msg_t*>(msgVec[i]->GetMessage()),
fSocket,
(i < vecSize - 1) ? ZMQ_SNDMORE|flags : flags);
if (nbytes >= 0)
{
totalSize += nbytes;
}
else
{
// according to ZMQ docs, this can only occur for the first part
if (zmq_errno() == EAGAIN)
{
if (!fInterrupted && ((flags & ZMQ_DONTWAIT) == 0))
{
repeat = true;
break;
}
else
{
return -2;
}
}
if (zmq_errno() == ETERM)
{
LOG(INFO) << "terminating socket " << fId;
return -1;
}
LOG(ERROR) << "Failed sending on socket " << fId << ", reason: " << zmq_strerror(errno);
return nbytes;
}
}
if (repeat)
{
continue;
}
// store statistics on how many messages have been sent (handle all parts as a single message)
++fMessagesTx;
fBytesTx += totalSize;
return totalSize;
}
} // If there's only one part, send it as a regular message
else if (vecSize == 1)
{
return Send(msgVec.back(), flags);
}
else // if the vector is empty, something might be wrong
{
LOG(WARN) << "Will not send empty vector";
return -1;
}
}
int64_t FairMQSocketZMQ::Receive(vector<unique_ptr<FairMQMessage>>& msgVec, const int flags)
{
int64_t totalSize = 0;
int64_t more = 0;
bool repeat = false;
while (true)
{
// Warn if the vector is filled before Receive() and empty it.
if (msgVec.size() > 0)
{
LOG(WARN) << "Message vector contains elements before Receive(), they will be deleted!";
msgVec.clear();
}
totalSize = 0;
more = 0;
repeat = false;
do
{
unique_ptr<FairMQMessage> part(new FairMQMessageZMQ());
int nbytes = zmq_msg_recv(static_cast<zmq_msg_t*>(part->GetMessage()), fSocket, flags);
if (nbytes >= 0)
{
msgVec.push_back(move(part));
totalSize += nbytes;
}
else if (zmq_errno() == EAGAIN)
{
if (!fInterrupted && ((flags & ZMQ_DONTWAIT) == 0))
{
repeat = true;
break;
}
else
{
return -2;
}
}
else
{
return nbytes;
}
size_t more_size = sizeof(more);
zmq_getsockopt(fSocket, ZMQ_RCVMORE, &more, &more_size);
}
while (more);
if (repeat)
{
continue;
}
// store statistics on how many messages have been received (handle all parts as a single message)
++fMessagesRx;
fBytesRx += totalSize;
return totalSize;
}
}
void FairMQSocketZMQ::Close()
{
// LOG(DEBUG) << "Closing socket " << fId;
if (fSocket == NULL)
{
return;
}
if (zmq_close(fSocket) != 0)
{
LOG(ERROR) << "Failed closing socket " << fId << ", reason: " << zmq_strerror(errno);
}
fSocket = NULL;
}
void FairMQSocketZMQ::Terminate()
{
if (zmq_ctx_destroy(fContext->GetContext()) != 0)
{
LOG(ERROR) << "Failed terminating context, reason: " << zmq_strerror(errno);
}
}
void FairMQSocketZMQ::Interrupt()
{
fInterrupted = true;
}
void FairMQSocketZMQ::Resume()
{
fInterrupted = false;
}
void* FairMQSocketZMQ::GetSocket() const
{
return fSocket;
}
int FairMQSocketZMQ::GetSocket(int) const
{
// dummy method to comply with the interface. functionality not possible in zeromq.
return -1;
}
void FairMQSocketZMQ::SetOption(const string& option, const void* value, size_t valueSize)
{
if (zmq_setsockopt(fSocket, GetConstant(option), value, valueSize) < 0)
{
LOG(ERROR) << "Failed setting socket option, reason: " << zmq_strerror(errno);
}
}
void FairMQSocketZMQ::GetOption(const string& option, void* value, size_t* valueSize)
{
if (zmq_getsockopt(fSocket, GetConstant(option), value, valueSize) < 0)
{
LOG(ERROR) << "Failed getting socket option, reason: " << zmq_strerror(errno);
}
}
unsigned long FairMQSocketZMQ::GetBytesTx() const
{
return fBytesTx;
}
unsigned long FairMQSocketZMQ::GetBytesRx() const
{
return fBytesRx;
}
unsigned long FairMQSocketZMQ::GetMessagesTx() const
{
return fMessagesTx;
}
unsigned long FairMQSocketZMQ::GetMessagesRx() const
{
return fMessagesRx;
}
bool FairMQSocketZMQ::SetSendTimeout(const int timeout, const string& address, const string& method)
{
if (method == "bind")
{
if (zmq_unbind(fSocket, address.c_str()) != 0)
{
LOG(ERROR) << "Failed unbinding socket " << fId << ", reason: " << zmq_strerror(errno);
return false;
}
if (zmq_setsockopt(fSocket, ZMQ_SNDTIMEO, &timeout, sizeof(int)) != 0)
{
LOG(ERROR) << "Failed setting option on socket " << fId << ", reason: " << zmq_strerror(errno);
return false;
}
if (zmq_bind(fSocket, address.c_str()) != 0)
{
LOG(ERROR) << "Failed binding socket " << fId << ", reason: " << zmq_strerror(errno);
return false;
}
}
else if (method == "connect")
{
if (zmq_disconnect(fSocket, address.c_str()) != 0)
{
LOG(ERROR) << "Failed disconnecting socket " << fId << ", reason: " << zmq_strerror(errno);
return false;
}
if (zmq_setsockopt(fSocket, ZMQ_SNDTIMEO, &timeout, sizeof(int)) != 0)
{
LOG(ERROR) << "Failed setting option on socket " << fId << ", reason: " << zmq_strerror(errno);
return false;
}
if (zmq_connect(fSocket, address.c_str()) != 0)
{
LOG(ERROR) << "Failed connecting socket " << fId << ", reason: " << zmq_strerror(errno);
return false;
}
}
else
{
LOG(ERROR) << "SetSendTimeout() failed - unknown method provided!";
return false;
}
return true;
}
int FairMQSocketZMQ::GetSendTimeout() const
{
int timeout = -1;
size_t size = sizeof(timeout);
if (zmq_getsockopt(fSocket, ZMQ_SNDTIMEO, &timeout, &size) != 0)
{
LOG(ERROR) << "Failed getting option 'receive timeout' on socket " << fId << ", reason: " << zmq_strerror(errno);
}
return timeout;
}
bool FairMQSocketZMQ::SetReceiveTimeout(const int timeout, const string& address, const string& method)
{
if (method == "bind")
{
if (zmq_unbind(fSocket, address.c_str()) != 0)
{
LOG(ERROR) << "Failed unbinding socket " << fId << ", reason: " << zmq_strerror(errno);
return false;
}
if (zmq_setsockopt(fSocket, ZMQ_RCVTIMEO, &timeout, sizeof(int)) != 0)
{
LOG(ERROR) << "Failed setting option on socket " << fId << ", reason: " << zmq_strerror(errno);
return false;
}
if (zmq_bind(fSocket, address.c_str()) != 0)
{
LOG(ERROR) << "Failed binding socket " << fId << ", reason: " << zmq_strerror(errno);
return false;
}
}
else if (method == "connect")
{
if (zmq_disconnect(fSocket, address.c_str()) != 0)
{
LOG(ERROR) << "Failed disconnecting socket " << fId << ", reason: " << zmq_strerror(errno);
return false;
}
if (zmq_setsockopt(fSocket, ZMQ_RCVTIMEO, &timeout, sizeof(int)) != 0)
{
LOG(ERROR) << "Failed setting option on socket " << fId << ", reason: " << zmq_strerror(errno);
return false;
}
if (zmq_connect(fSocket, address.c_str()) != 0)
{
LOG(ERROR) << "Failed connecting socket " << fId << ", reason: " << zmq_strerror(errno);
return false;
}
}
else
{
LOG(ERROR) << "SetReceiveTimeout() failed - unknown method provided!";
return false;
}
return true;
}
int FairMQSocketZMQ::GetReceiveTimeout() const
{
int timeout = -1;
size_t size = sizeof(timeout);
if (zmq_getsockopt(fSocket, ZMQ_RCVTIMEO, &timeout, &size) != 0)
{
LOG(ERROR) << "Failed getting option 'receive timeout' on socket " << fId << ", reason: " << zmq_strerror(errno);
}
return timeout;
}
int FairMQSocketZMQ::GetConstant(const string& constant)
{
if (constant == "")
return 0;
if (constant == "sub")
return ZMQ_SUB;
if (constant == "pub")
return ZMQ_PUB;
if (constant == "xsub")
return ZMQ_XSUB;
if (constant == "xpub")
return ZMQ_XPUB;
if (constant == "push")
return ZMQ_PUSH;
if (constant == "pull")
return ZMQ_PULL;
if (constant == "req")
return ZMQ_REQ;
if (constant == "rep")
return ZMQ_REP;
if (constant == "dealer")
return ZMQ_DEALER;
if (constant == "router")
return ZMQ_ROUTER;
if (constant == "pair")
return ZMQ_PAIR;
if (constant == "snd-hwm")
return ZMQ_SNDHWM;
if (constant == "rcv-hwm")
return ZMQ_RCVHWM;
if (constant == "snd-size")
return ZMQ_SNDBUF;
if (constant == "rcv-size")
return ZMQ_RCVBUF;
if (constant == "snd-more")
return ZMQ_SNDMORE;
if (constant == "rcv-more")
return ZMQ_RCVMORE;
if (constant == "linger")
return ZMQ_LINGER;
return -1;
}
FairMQSocketZMQ::~FairMQSocketZMQ()
{
}
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