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60 lines
1.6 KiB
C++
60 lines
1.6 KiB
C++
// repl.h - replication
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/**
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* Copyright (C) 2008 10gen Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/* replication data overview
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at the slave:
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local.sources { host: ..., source: ..., syncedTo: }
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*/
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#pragma once
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bool cloneFrom(const char *masterHost, string& errmsg);
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#pragma pack(push)
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#pragma pack(4)
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class OpTime {
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unsigned secs;
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unsigned i;
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public:
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OpTime(unsigned a, unsigned b) { secs = a; i = b; }
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OpTime() { secs = 0; i = 0; }
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static OpTime now();
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double& asDouble() { return *((double *) this); }
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bool isNull() { return secs == 0; }
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};
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#pragma pack(pop)
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/* A Source is a source from which we can pull (replicate) data.
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stored in collection local.sources.
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Can be a group of things to replicate for several databases.
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*/
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class Source {
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public:
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string hostName;
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string sourceName;
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OpTime syncedTo;
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static void loadAll(vector<Source*>&);
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static void cleanup(vector<Source*>&);
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Source(JSObj);
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void pull();
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void updateOnDisk();
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JSObj jsobj(); // { host: ..., source: ..., syncedTo: }
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};
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