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/*
*
* 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/broker/Broker.h"
#include "qpid/sys/posix/check.h"
#include "qpid/broker/Daemon.h"
#include "qpid/log/Statement.h"
#include "qpid/log/Options.h"
#include "qpid/log/Logger.h"
#include "config.h"
#include <boost/filesystem/path.hpp>
#include <boost/filesystem/operations.hpp>
#include <iostream>
#include <fstream>
#include <signal.h>
#include <unistd.h>
using namespace qpid;
using namespace qpid::broker;
using namespace qpid::sys;
using namespace std;
/** Command line options */
struct QpiddOptions : public Broker::Options, public log::Options
{
bool help;
bool longHelp;
bool version;
bool daemon;
bool quit;
bool kill;
bool check;
int wait;
string config;
po::options_description mainOpts;
po::options_description allOpts;
QpiddOptions() :
help(false), version(false), daemon(false),
quit(false), check(false),
wait(10),
config("/etc/qpidd.conf"),
mainOpts("Broker Options")
{
using namespace po;
// First set up the sub-option groups.
options_description daemonOpts("Daemon Options");
daemonOpts.add_options()
("daemon,d", optValue(daemon), "Run as a daemon. With --port 0 print actual listening port.")
("wait,w", optValue(wait, "SECONDS"), "Maximum wait for daemon response.")
("check,c", optValue(check), "If a daemon is running print its pid to stdout and return 0.")
("quit,q", optValue(quit), "Stop the running daemon politely.");
options_description logOpts("Logging Options");
log::Options::addTo(logOpts);
// Populate the main options group for --help
Broker::Options::addTo(mainOpts);
mainOpts.add_options()
("config", optValue(config, "FILE"), "Configuation file.")
("help,h", optValue(help), "Print help message.")
("long-help", optValue(longHelp), "Show complete list of options.")
("version,v", optValue(version), "Print version information.");
mainOpts.add(daemonOpts);
// Populate the all options group
allOpts.add(mainOpts).add(logOpts);
}
void parse(int argc, char* argv[]) {
parseOptions(allOpts, argc, argv, config);
}
void usage(const po::options_description& opts) const {
cout << "Usage: qpidd [OPTIONS]" << endl << endl
<< opts << endl;
};
};
// Globals
Broker::shared_ptr brokerPtr;
QpiddOptions config;
void handle_signal(int /*signal*/){
QPID_LOG(notice, "Shutting down...");
brokerPtr->shutdown();
}
/** Compute a name for the pid file */
std::string pidFileFn() {
uint16_t port=brokerPtr ? brokerPtr->getPort() : config.port;
string file=(boost::format("qpidd.%d.pid") % port).str();
string pidPath;
if (getuid() == 0) // Use standard pid file for root.
pidPath=Daemon::defaultPidFile(file);
else { // Use $HOME/.qpidd for non-root.
const char* home=getenv("HOME");
if (!home)
throw(Exception("$HOME is not set, cant create $HOME/.qpidd."));
namespace fs=boost::filesystem;
fs::path dir = fs::path(home,fs::native) / fs::path(".qpidd", fs::native);
fs::create_directory(dir);
dir /= file;
pidPath=dir.string();
}
QPID_LOG(debug, "PID file name=" << pidPath);
return pidPath;
}
/** Code for forked parent */
void parent(Daemon& demon) {
uint16_t realPort = demon.wait();
if (config.port == 0)
cout << realPort << endl;
}
/** Code for forked child */
void child(Daemon& demon) {
brokerPtr=Broker::create(config);
uint16_t realPort=brokerPtr->getPort();
demon.ready(realPort); // Notify parent.
brokerPtr->run();
}
int main(int argc, char* argv[])
{
// Spelled 'demon' to avoid clash with daemon.h function.
Daemon demon(pidFileFn, config.wait);
try {
config.parse(argc, argv);
if (config.trace)
config.selectors.push_back("trace+");
log::Logger::instance().configure(config, argv[0]);
// Options that just print information.
if(config.help || config.longHelp || config.version) {
if (config.version)
cout << "qpidd (" << PACKAGE_NAME << ") version "
<< PACKAGE_VERSION << endl;
if (config.longHelp)
config.usage(config.allOpts);
else if (config.help)
config.usage(config.mainOpts);
return 0;
}
// Stop running daemon
if (config.quit) {
demon.quit();
return 0;
}
// Query running daemon
if (config.check) {
pid_t pid = demon.check();
if (pid < 0)
return 1;
else {
cout << pid << endl;
return 0;
}
}
// Starting the broker:
signal(SIGINT, handle_signal);
if (config.daemon) { // Daemon broker
demon.fork(parent, child);
}
else { // Non-daemon broker.
brokerPtr = Broker::create(config);
if (config.port == 0)
cout << uint16_t(brokerPtr->getPort()) << endl;
brokerPtr->run();
}
return 0;
}
catch(const po::error& e) {
// Command line parsing error.
cerr << "Error: " << e.what() << endl
<< "Type 'qpidd --long-help' for full usage." << endl;
}
catch(const exception& e) {
if (demon.isParent())
cerr << "Error: " << e.what() << endl;
else
QPID_LOG(critical, e.what());
}
return 1;
}
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