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-rw-r--r--cpp/src/qpid/cluster/ClusterMap.cpp176
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diff --git a/cpp/src/qpid/cluster/ClusterMap.cpp b/cpp/src/qpid/cluster/ClusterMap.cpp
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--- a/cpp/src/qpid/cluster/ClusterMap.cpp
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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/cluster/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>
-
-using namespace std;
-using namespace boost;
-
-namespace qpid {
-using namespace framing;
-
-namespace cluster {
-
-namespace {
-
-void addFieldTableValue(FieldTable::ValueMap::value_type vt, ClusterMap::Map& map, ClusterMap::Set& set) {
- MemberId id(vt.first);
- set.insert(id);
- string url = vt.second->get<string>();
- if (!url.empty())
- map.insert(ClusterMap::Map::value_type(id, Url(url)));
-}
-
-void insertFieldTableFromMapValue(FieldTable& ft, const ClusterMap::Map::value_type& vt) {
- ft.setString(vt.first.str(), vt.second.str());
-}
-
-}
-
-ClusterMap::ClusterMap() : frameSeq(0) {}
-
-ClusterMap::ClusterMap(const Map& map) : frameSeq(0) {
- transform(map.begin(), map.end(), inserter(alive, alive.begin()), bind(&Map::value_type::first, _1));
- members = map;
-}
-
-ClusterMap::ClusterMap(const FieldTable& joinersFt, const FieldTable& membersFt,
- framing::SequenceNumber frameSeq_)
- : frameSeq(frameSeq_)
-{
- for_each(joinersFt.begin(), joinersFt.end(), bind(&addFieldTableValue, _1, ref(joiners), ref(alive)));
- for_each(membersFt.begin(), membersFt.end(), bind(&addFieldTableValue, _1, ref(members), ref(alive)));
-}
-
-void ClusterMap::toMethodBody(framing::ClusterConnectionMembershipBody& b) const {
- b.getJoiners().clear();
- for_each(joiners.begin(), joiners.end(), bind(&insertFieldTableFromMapValue, ref(b.getJoiners()), _1));
- for(Set::const_iterator i = alive.begin(); i != alive.end(); ++i) {
- if (!isMember(*i) && !isJoiner(*i))
- b.getJoiners().setString(i->str(), string());
- }
- b.getMembers().clear();
- for_each(members.begin(), members.end(), bind(&insertFieldTableFromMapValue, ref(b.getMembers()), _1));
- b.setFrameSeq(frameSeq);
-}
-
-Url ClusterMap::getUrl(const Map& map, const MemberId& id) {
- Map::const_iterator i = map.find(id);
- return i == map.end() ? Url() : i->second;
-}
-
-MemberId ClusterMap::firstJoiner() const {
- return joiners.empty() ? MemberId() : joiners.begin()->first;
-}
-
-vector<string> ClusterMap::memberIds() const {
- vector<string> ids;
- for (Map::const_iterator iter = members.begin();
- iter != members.end(); iter++) {
- stringstream stream;
- stream << iter->first;
- ids.push_back(stream.str());
- }
- return ids;
-}
-
-vector<Url> ClusterMap::memberUrls() const {
- vector<Url> urls(members.size());
- transform(members.begin(), members.end(), urls.begin(),
- bind(&Map::value_type::second, _1));
- return urls;
-}
-
-ClusterMap::Set ClusterMap::getAlive() const { return alive; }
-
-ClusterMap::Set ClusterMap::getMembers() const {
- Set s;
- transform(members.begin(), members.end(), inserter(s, s.begin()),
- bind(&Map::value_type::first, _1));
- return s;
-}
-
-ostream& operator<<(ostream& o, const ClusterMap::Map& m) {
- ostream_iterator<MemberId> oi(o);
- transform(m.begin(), m.end(), oi, bind(&ClusterMap::Map::value_type::first, _1));
- return o;
-}
-
-ostream& operator<<(ostream& o, const ClusterMap& m) {
- for (ClusterMap::Set::const_iterator i = m.alive.begin(); i != m.alive.end(); ++i) {
- o << *i;
- if (m.isMember(*i)) o << "(member)";
- else if (m.isJoiner(*i)) o << "(joiner)";
- else o << "(unknown)";
- o << " ";
- }
- o << "frameSeq=" << m.getFrameSeq();
- return o;
-}
-
-bool ClusterMap::updateRequest(const MemberId& id, const string& url) {
- try {
- if (isAlive(id)) {
- joiners[id] = Url(url);
- return true;
- }
- } catch (const Url::Invalid&) {
- QPID_LOG(error, "Invalid URL in cluster update request: " << url);
- }
- return false;
-}
-
-bool ClusterMap::ready(const MemberId& id, const Url& url) {
- return isAlive(id) && members.insert(Map::value_type(id,url)).second;
-}
-
-bool ClusterMap::configChange(const Set& update) {
- bool memberChange = false;
- Set removed;
- set_difference(alive.begin(), alive.end(),
- update.begin(), update.end(),
- inserter(removed, removed.begin()));
- alive = update;
- for (Set::const_iterator i = removed.begin(); i != removed.end(); ++i) {
- memberChange = memberChange || members.erase(*i);
- joiners.erase(*i);
- }
- return memberChange;
-}
-
-optional<Url> ClusterMap::updateOffer(const MemberId& from, const MemberId& to) {
- Map::iterator i = joiners.find(to);
- if (isAlive(from) && i != joiners.end()) {
- Url url= i->second;
- joiners.erase(i); // No longer a potential updatee.
- return url;
- }
- return optional<Url>();
-}
-
-}} // namespace qpid::cluster