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#ifndef TESTS_FORKEDBROKER_H
#define TESTS_FORKEDBROKER_H
/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
#include "qpid/Exception.h"
#include "qpid/sys/Fork.h"
#include "qpid/log/Logger.h"
#include "qpid/broker/Broker.h"
#include "qpid/broker/SignalHandler.h"
#include <boost/lexical_cast.hpp>
#include <string>
#include <signal.h>
#include <sys/wait.h>
/**
* Class to fork a broker child process.
*
* For most tests a BrokerFixture may be more convenient as it starts
* a broker in the same process which allows you to easily debug into
* the broker.
*
* This useful for tests that need to start multiple brokers where
* those brokers can't coexist in the same process (e.g. for cluster
* tests where CPG doesn't allow multiple group members in a single
* process.)
*
*/
class ForkedBroker : public qpid::sys::ForkWithMessage {
pid_t pid;
uint16_t port;
qpid::broker::Broker::Options opts;
std::string prefix;
public:
struct ChildExit {}; // Thrown in child processes.
ForkedBroker(const qpid::broker::Broker::Options& opts_=qpid::broker::Broker::Options(),
const std::string& prefix_=std::string())
: pid(0), port(0), opts(opts_), prefix(prefix_) { fork(); }
~ForkedBroker() {
try { stop(); }
catch(const std::exception& e) {
QPID_LOG(error, e.what());
}
}
void stop() {
if (pid > 0) { // I am the parent, clean up children.
if (::kill(pid, SIGINT) < 0)
throw qpid::Exception(QPID_MSG("Can't kill process " << pid << ": " << qpid::strError(errno)));
int status = 0;
if (::waitpid(pid, &status, 0) < 0)
throw qpid::Exception(QPID_MSG("Waiting for process " << pid << ": " << qpid::strError(errno)));
if (WEXITSTATUS(status) != 0)
throw qpid::Exception(QPID_MSG("Process " << pid << " exited with status: " << WEXITSTATUS(status)));
}
}
void parent(pid_t pid_) {
pid = pid_;
qpid::log::Logger::instance().setPrefix("parent");
std::string portStr = wait(5);
port = boost::lexical_cast<uint16_t>(portStr);
}
void child() {
prefix += boost::lexical_cast<std::string>(long(getpid()));
qpid::log::Logger::instance().setPrefix(prefix);
opts.port = 0;
boost::shared_ptr<qpid::broker::Broker> broker(new qpid::broker::Broker(opts));
qpid::broker::SignalHandler::setBroker(broker);
QPID_LOG(info, "ForkedBroker started on " << broker->getPort());
ready(boost::lexical_cast<std::string>(broker->getPort())); // Notify parent.
broker->run();
QPID_LOG(notice, "ForkedBroker exiting.");
// Force exit in the child process, otherwise we will try to
// carry with parent tests.
broker.reset(); // Run broker dtor before we exit.
exit(0);
}
uint16_t getPort() { return port; }
};
#endif /*!TESTS_FORKEDBROKER_H*/
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