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/**
* Copyright (C) 2012 10gen Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects
* for all of the code used other than as permitted herein. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you do not
* wish to do so, delete this exception statement from your version. If you
* delete this exception statement from all source files in the program,
* then also delete it in the license file.
*/
#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kSharding
#include "mongo/platform/basic.h"
#include "mongo/s/catalog/legacy/config_upgrade.h"
#include "mongo/s/catalog/catalog_manager.h"
#include "mongo/s/type_config_version.h"
#include "mongo/util/log.h"
#include "mongo/util/mongoutils/str.h"
namespace mongo {
using std::string;
using mongo::str::stream;
/**
* Upgrade v0 to v7 described here
*
* This upgrade takes the config server from empty to an initial version.
*/
bool doUpgradeV0ToV7(CatalogManager* catalogManager,
const VersionType& lastVersionInfo,
string* errMsg) {
string dummy;
if (!errMsg) errMsg = &dummy;
verify(lastVersionInfo.getCurrentVersion() == UpgradeHistory_EmptyVersion);
//
// Even though the initial config write is a single-document update, that single document
// is on multiple config servers and requests can interleave. The upgrade lock prevents
// this.
//
log() << "writing initial config version at v" << CURRENT_CONFIG_VERSION;
OID newClusterId = OID::gen();
VersionType versionInfo;
// Upgrade to new version
versionInfo.setMinCompatibleVersion(MIN_COMPATIBLE_CONFIG_VERSION);
versionInfo.setCurrentVersion(CURRENT_CONFIG_VERSION);
versionInfo.setClusterId(newClusterId);
verify(versionInfo.isValid(NULL));
// If the cluster has not previously been initialized, we need to set the version before
// using so subsequent mongoses use the config data the same way. This requires all three
// config servers online initially.
Status result = catalogManager->update(VersionType::ConfigNS,
BSON("_id" << 1),
versionInfo.toBSON(),
true, // upsert
false, // multi
NULL);
if (!result.isOK()) {
*errMsg = stream() << "error writing initial config version: "
<< result.reason();
return false;
}
return true;
}
}
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