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101 lines
3.2 KiB
C++
101 lines
3.2 KiB
C++
// syncclusterconnection.h
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/*
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* Copyright 2010 10gen Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "../stdafx.h"
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#include "dbclient.h"
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namespace mongo {
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/**
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* this is a connection to a cluster of servers that operate as one
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* for super high durability
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*/
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class SyncClusterConnection : public DBClientBase {
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public:
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/**
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* @param commaSeperated should be 3 hosts comma seperated
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*/
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SyncClusterConnection( string commaSeperated );
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SyncClusterConnection( string a , string b , string c );
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~SyncClusterConnection();
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/**
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* @return true if all servers are up and ready for writes
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*/
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bool prepare( string& errmsg );
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/**
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* runs fsync on all servers
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*/
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bool fsync( string& errmsg );
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// --- from DBClientInterface
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virtual auto_ptr<DBClientCursor> query(const string &ns, Query query, int nToReturn, int nToSkip,
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const BSONObj *fieldsToReturn, int queryOptions, int batchSize );
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virtual auto_ptr<DBClientCursor> getMore( const string &ns, long long cursorId, int nToReturn, int options );
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virtual void insert( const string &ns, BSONObj obj );
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virtual void insert( const string &ns, const vector< BSONObj >& v );
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virtual void remove( const string &ns , Query query, bool justOne );
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virtual void update( const string &ns , Query query , BSONObj obj , bool upsert , bool multi );
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virtual string toString(){
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return _toString();
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}
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virtual bool call( Message &toSend, Message &response, bool assertOk );
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virtual void say( Message &toSend );
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virtual void sayPiggyBack( Message &toSend );
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virtual string getServerAddress() const { return _address; }
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virtual bool isFailed() const {
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return false;
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}
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private:
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SyncClusterConnection( SyncClusterConnection& prev );
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string _toString() const;
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bool _commandOnActive(const string &dbname, const BSONObj& cmd, BSONObj &info, int options=0);
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auto_ptr<DBClientCursor> _queryOnActive(const string &ns, Query query, int nToReturn, int nToSkip,
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const BSONObj *fieldsToReturn, int queryOptions, int batchSize );
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bool _isReadOnly( const string& name );
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void _checkLast();
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void _connect( string host );
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string _address;
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vector<DBClientConnection*> _conns;
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map<string,int> _lockTypes;
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};
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};
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