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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/Plugin.h"
#include "qpid/Options.h"
#include <boost/bind.hpp>
#include <algorithm>
namespace qpid {
namespace {
Plugin::Plugins& thePlugins() {
// This is a single threaded singleton implementation so
// it is important to be sure that the first use of this
// singleton is when the program is still single threaded
static Plugin::Plugins plugins;
return plugins;
}
void invoke(boost::function<void()> f) { f(); }
} // namespace
Plugin::Target::~Target() { finalize(); }
void Plugin::Target::finalize() {
std::for_each(finalizers.begin(), finalizers.end(), invoke);
finalizers.clear();
}
void Plugin::Target::addFinalizer(const boost::function<void()>& f) {
finalizers.push_back(f);
}
namespace {
bool initBefore(const Plugin* a, const Plugin* b) {
return a->initOrder() < b->initOrder();
}
}
Plugin::Plugin() {
// Register myself.
thePlugins().push_back(this);
std::sort(thePlugins().begin(), thePlugins().end(), &initBefore);
}
Plugin::~Plugin() {}
Options* Plugin::getOptions() { return 0; }
const Plugin::Plugins& Plugin::getPlugins() { return thePlugins(); }
namespace {
template <class F> void each_plugin(const F& f) {
std::for_each(Plugin::getPlugins().begin(), Plugin::getPlugins().end(), f);
}
}
void Plugin::addOptions(Options& opts) {
for (Plugins::const_iterator i = getPlugins().begin(); i != getPlugins().end(); ++i) {
if ((*i)->getOptions())
opts.add(*(*i)->getOptions());
}
}
int Plugin::initOrder() const { return DEFAULT_INIT_ORDER; }
void Plugin::earlyInitAll(Target& t) {
each_plugin(boost::bind(&Plugin::earlyInitialize, _1, boost::ref(t)));
}
void Plugin::initializeAll(Target& t) {
each_plugin(boost::bind(&Plugin::initialize, _1, boost::ref(t)));
}
} // namespace qpid
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