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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 "ClusterMap.h"
#include "qpid/Url.h"
#include "qpid/framing/FieldTable.h"
#include "qpid/log/Statement.h"
#include <boost/bind.hpp>
#include <algorithm>
#include <functional>
#include <iterator>
#include <ostream>
namespace qpid {
using namespace framing;
namespace cluster {
ClusterMap::ClusterMap() {}
MemberId ClusterMap::first() const {
return (members.empty()) ? MemberId() : members.begin()->first;
}
bool ClusterMap::left(const cpg_address* addrs, size_t nLeft) {
bool changed=false;
for (const cpg_address* a = addrs; a < addrs+nLeft; ++a)
changed = members.erase(*a) || changed;
if (dumper && !isMember(dumper))
dumper = MemberId();
QPID_LOG_IF(debug, changed, *this);
return changed;
}
framing::ClusterUpdateBody ClusterMap::toControl() const {
framing::ClusterUpdateBody b;
for (Members::const_iterator i = members.begin(); i != members.end(); ++i)
b.getMembers().setString(i->first.str(), i->second.str());
b.setDumper(dumper);
return b;
}
bool ClusterMap::update(const framing::FieldTable& ftMembers, uint64_t dumper_) {
dumper = MemberId(dumper_);
bool changed = false;
framing:: FieldTable::ValueMap::const_iterator i;
for (i = ftMembers.begin(); i != ftMembers.end(); ++i) {
MemberId id(i->first);
Url url(i->second->get<std::string>());
changed = members.insert(Members::value_type(id, url)).second || changed;
}
QPID_LOG_IF(debug, changed, *this);
return changed;
}
std::vector<Url> ClusterMap::memberUrls() const {
std::vector<Url> result(size());
std::transform(members.begin(), members.end(), result.begin(),
boost::bind(&Members::value_type::second, _1));
return result;
}
std::ostream& operator<<(std::ostream& o, const ClusterMap& m) {
o << "Broker members:";
for (ClusterMap::Members::const_iterator i=m.members.begin(); i != m.members.end(); ++i) {
o << " " << i->first;
if (i->first == m.dumper) o << "(dumping)";
}
return o;
}
bool ClusterMap::sendUpdate(const MemberId& id) const {
return dumper==id || (!dumper && first() == id);
}
bool ClusterMap::ready(const MemberId& id, const Url& url) {
bool changed = members.insert(Members::value_type(id,url)).second;
if (id == dumper) {
dumper = MemberId();
QPID_LOG(info, id << " finished dump.");
}
else {
QPID_LOG(info, id << " joined cluster, url=" << url);
}
QPID_LOG_IF(debug, changed, *this);
return changed;
}
}} // namespace qpid::cluster
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