| #ifndef QPID_CLUSTER_CLUSTERMAP_H |
| #define QPID_CLUSTER_CLUSTERMAP_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 "types.h" |
| #include "qpid/Url.h" |
| #include "qpid/framing/ClusterConnectionMembershipBody.h" |
| |
| #include <boost/function.hpp> |
| #include <boost/optional.hpp> |
| |
| #include <vector> |
| #include <deque> |
| #include <map> |
| #include <set> |
| #include <iosfwd> |
| |
| namespace qpid { |
| namespace cluster { |
| |
| /** |
| * Map of established cluster members and newbies waiting for a brain dump. |
| */ |
| class ClusterMap { |
| public: |
| typedef std::map<MemberId, Url> Map; |
| typedef std::set<MemberId> Set; |
| |
| ClusterMap(); |
| ClusterMap(const MemberId& id, const Url& url, bool isReady); |
| ClusterMap(const framing::FieldTable& urls, const framing::FieldTable& states); |
| |
| /** Update from config change. |
| *@return true if member set changed. |
| */ |
| bool configChange( |
| cpg_address *current, int nCurrent, |
| cpg_address *left, int nLeft, |
| cpg_address *joined, int nJoined); |
| |
| bool configChange(const std::string& addresses); |
| |
| bool isNewbie(const MemberId& id) const { return newbies.find(id) != newbies.end(); } |
| bool isMember(const MemberId& id) const { return members.find(id) != members.end(); } |
| bool isAlive(const MemberId& id) const { return alive.find(id) != alive.end(); } |
| |
| Url getNewbieUrl(const MemberId& id) { return getUrl(newbies, id); } |
| Url getMemberUrl(const MemberId& id) { return getUrl(members, id); } |
| |
| /** First newbie in the cluster in ID order, target for offers */ |
| MemberId firstNewbie() const; |
| |
| /** Convert map contents to a cluster control body. */ |
| framing::ClusterConnectionMembershipBody asMethodBody() const; |
| |
| size_t aliveCount() const { return alive.size(); } |
| size_t memberCount() const { return members.size(); } |
| std::vector<Url> memberUrls() const; |
| |
| bool dumpRequest(const MemberId& id, const std::string& url); |
| /** Return non-empty Url if accepted */ |
| boost::optional<Url> dumpOffer(const MemberId& from, const MemberId& to); |
| |
| /**@return true If this is a new member */ |
| bool ready(const MemberId& id, const Url&); |
| |
| private: |
| Url getUrl(const Map& map, const MemberId& id); |
| |
| Map newbies, members; |
| Set alive; |
| |
| friend std::ostream& operator<<(std::ostream&, const Map&); |
| friend std::ostream& operator<<(std::ostream&, const ClusterMap&); |
| }; |
| |
| }} // namespace qpid::cluster |
| |
| #endif /*!QPID_CLUSTER_CLUSTERMAP_H*/ |