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FairMQ/fairmq/zeromq/FairMQSocketZMQ.cxx

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/********************************************************************************
* Copyright (C) 2014-2018 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH *
* *
* This software is distributed under the terms of the *
* GNU Lesser General Public Licence (LGPL) version 3, *
* copied verbatim in the file "LICENSE" *
********************************************************************************/
#include "FairMQSocketZMQ.h"
#include "FairMQMessageZMQ.h"
#include "FairMQLogger.h"
#include <fairmq/Tools.h>
#include <zmq.h>
#include <cassert>
using namespace std;
using namespace fair::mq;
atomic<bool> FairMQSocketZMQ::fInterrupted(false);
FairMQSocketZMQ::FairMQSocketZMQ(const string& type, const string& name, const string& id /*= ""*/, void* context, FairMQTransportFactory* fac)
: FairMQSocket{fac}
, fSocket(nullptr)
, fId(id + "." + name + "." + type)
, fBytesTx(0)
, fBytesRx(0)
, fMessagesTx(0)
, fMessagesRx(0)
, fSndTimeout(100)
, fRcvTimeout(100)
{
assert(context);
fSocket = zmq_socket(context, GetConstant(type));
if (fSocket == nullptr)
{
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);
}
if (zmq_setsockopt(fSocket, ZMQ_SNDTIMEO, &fSndTimeout, sizeof(fSndTimeout)) != 0)
{
LOG(error) << "Failed setting ZMQ_SNDTIMEO socket option, reason: " << zmq_strerror(errno);
}
if (zmq_setsockopt(fSocket, ZMQ_RCVTIMEO, &fRcvTimeout, sizeof(fRcvTimeout)) != 0)
{
LOG(error) << "Failed setting ZMQ_RCVTIMEO socket option, reason: " << zmq_strerror(errno);
}
if (type == "sub")
{
if (zmq_setsockopt(fSocket, ZMQ_SUBSCRIBE, nullptr, 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;
}
bool 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);
return false;
}
return true;
}
int FairMQSocketZMQ::Send(FairMQMessagePtr& msg, const int timeout)
{
int flags = 0;
if (timeout == 0)
{
flags = ZMQ_DONTWAIT;
}
int elapsed = 0;
static_cast<FairMQMessageZMQ*>(msg.get())->ApplyUsedSize();
while (true)
{
int nbytes = zmq_msg_send(static_cast<FairMQMessageZMQ*>(msg.get())->GetMessage(), fSocket, flags);
if (nbytes >= 0)
{
fBytesTx += nbytes;
++fMessagesTx;
return nbytes;
}
else if (zmq_errno() == EAGAIN)
{
if (!fInterrupted && ((flags & ZMQ_DONTWAIT) == 0))
{
if (timeout > 0)
{
elapsed += fSndTimeout;
if (elapsed >= timeout)
{
return -2;
}
}
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 timeout)
{
int flags = 0;
if (timeout == 0)
{
flags = ZMQ_DONTWAIT;
}
int elapsed = 0;
while (true)
{
int nbytes = zmq_msg_recv(static_cast<FairMQMessageZMQ*>(msg.get())->GetMessage(), fSocket, flags);
if (nbytes >= 0)
{
fBytesRx += nbytes;
++fMessagesRx;
return nbytes;
}
else if (zmq_errno() == EAGAIN)
{
if (!fInterrupted && ((flags & ZMQ_DONTWAIT) == 0))
{
if (timeout > 0)
{
elapsed += fRcvTimeout;
if (elapsed >= timeout)
{
return -2;
}
}
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<FairMQMessagePtr>& msgVec, const int timeout)
{
int flags = 0;
if (timeout == 0)
{
flags = ZMQ_DONTWAIT;
}
const unsigned int vecSize = msgVec.size();
// Sending vector typicaly handles more then one part
if (vecSize > 1)
{
int elapsed = 0;
while (true)
{
int64_t totalSize = 0;
bool repeat = false;
for (unsigned int i = 0; i < vecSize; ++i)
{
static_cast<FairMQMessageZMQ*>(msgVec[i].get())->ApplyUsedSize();
int nbytes = zmq_msg_send(static_cast<FairMQMessageZMQ*>(msgVec[i].get())->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))
{
if (timeout > 0)
{
elapsed += fSndTimeout;
if (elapsed >= timeout)
{
return -2;
}
}
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(), timeout);
}
else // if the vector is empty, something might be wrong
{
LOG(warn) << "Will not send empty vector";
return -1;
}
}
int64_t FairMQSocketZMQ::Receive(vector<FairMQMessagePtr>& msgVec, const int timeout)
{
int flags = 0;
if (timeout == 0)
{
flags = ZMQ_DONTWAIT;
}
int elapsed = 0;
while (true)
{
int64_t totalSize = 0;
int64_t more = 0;
bool repeat = false;
do
{
unique_ptr<FairMQMessage> part(new FairMQMessageZMQ(GetTransport()));
int nbytes = zmq_msg_recv(static_cast<FairMQMessageZMQ*>(part.get())->GetMessage(), fSocket, flags);
if (nbytes >= 0)
{
msgVec.push_back(move(part));
totalSize += nbytes;
}
else if (zmq_errno() == EAGAIN)
{
if (!fInterrupted && ((flags & ZMQ_DONTWAIT) == 0))
{
if (timeout > 0)
{
elapsed += fRcvTimeout;
if (elapsed >= timeout)
{
return -2;
}
}
repeat = true;
break;
}
else
{
return -2;
}
}
else
{
return nbytes;
}
size_t moreSize = sizeof(more);
zmq_getsockopt(fSocket, ZMQ_RCVMORE, &more, &moreSize);
}
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 == nullptr)
{
return;
}
if (zmq_close(fSocket) != 0)
{
LOG(error) << "Failed closing socket " << fId << ", reason: " << zmq_strerror(errno);
}
fSocket = nullptr;
}
void FairMQSocketZMQ::Interrupt()
{
fInterrupted = true;
}
void FairMQSocketZMQ::Resume()
{
fInterrupted = false;
}
void* FairMQSocketZMQ::GetSocket() const
{
return fSocket;
}
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);
}
}
void FairMQSocketZMQ::SetLinger(const int value)
{
if (zmq_setsockopt(fSocket, ZMQ_LINGER, &value, sizeof(value)) < 0) {
throw SocketError(tools::ToString("failed setting ZMQ_LINGER, reason: ", zmq_strerror(errno)));
}
}
int FairMQSocketZMQ::GetLinger() const
{
int value = 0;
size_t valueSize = sizeof(value);
if (zmq_getsockopt(fSocket, ZMQ_LINGER, &value, &valueSize) < 0) {
throw SocketError(tools::ToString("failed getting ZMQ_LINGER, reason: ", zmq_strerror(errno)));
}
return value;
}
void FairMQSocketZMQ::SetSndBufSize(const int value)
{
if (zmq_setsockopt(fSocket, ZMQ_SNDHWM, &value, sizeof(value)) < 0) {
throw SocketError(tools::ToString("failed setting ZMQ_SNDHWM, reason: ", zmq_strerror(errno)));
}
}
int FairMQSocketZMQ::GetSndBufSize() const
{
int value = 0;
size_t valueSize = sizeof(value);
if (zmq_getsockopt(fSocket, ZMQ_SNDHWM, &value, &valueSize) < 0) {
throw SocketError(tools::ToString("failed getting ZMQ_SNDHWM, reason: ", zmq_strerror(errno)));
}
return value;
}
void FairMQSocketZMQ::SetRcvBufSize(const int value)
{
if (zmq_setsockopt(fSocket, ZMQ_RCVHWM, &value, sizeof(value)) < 0) {
throw SocketError(tools::ToString("failed setting ZMQ_RCVHWM, reason: ", zmq_strerror(errno)));
}
}
int FairMQSocketZMQ::GetRcvBufSize() const
{
int value = 0;
size_t valueSize = sizeof(value);
if (zmq_getsockopt(fSocket, ZMQ_RCVHWM, &value, &valueSize) < 0) {
throw SocketError(tools::ToString("failed getting ZMQ_RCVHWM, reason: ", zmq_strerror(errno)));
}
return value;
}
void FairMQSocketZMQ::SetSndKernelSize(const int value)
{
if (zmq_setsockopt(fSocket, ZMQ_SNDBUF, &value, sizeof(value)) < 0) {
throw SocketError(tools::ToString("failed getting ZMQ_SNDBUF, reason: ", zmq_strerror(errno)));
}
}
int FairMQSocketZMQ::GetSndKernelSize() const
{
int value = 0;
size_t valueSize = sizeof(value);
if (zmq_getsockopt(fSocket, ZMQ_SNDBUF, &value, &valueSize) < 0) {
throw SocketError(tools::ToString("failed getting ZMQ_SNDBUF, reason: ", zmq_strerror(errno)));
}
return value;
}
void FairMQSocketZMQ::SetRcvKernelSize(const int value)
{
if (zmq_setsockopt(fSocket, ZMQ_RCVBUF, &value, sizeof(value)) < 0) {
throw SocketError(tools::ToString("failed getting ZMQ_RCVBUF, reason: ", zmq_strerror(errno)));
}
}
int FairMQSocketZMQ::GetRcvKernelSize() const
{
int value = 0;
size_t valueSize = sizeof(value);
if (zmq_getsockopt(fSocket, ZMQ_RCVBUF, &value, &valueSize) < 0) {
throw SocketError(tools::ToString("failed getting ZMQ_RCVBUF, reason: ", zmq_strerror(errno)));
}
return value;
}
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;
}
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()
{
Close();
}
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