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/*
* Copyright (C) 2010 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.
*/
#pragma once
#include <string>
namespace mongo {
class BSONObj;
class Client;
class OperationContext;
class ShardedConnectionInfo;
class NamespaceString;
// -----------------
// --- core ---
// -----------------
/**
* @return true if we have any shard info for the ns
*/
bool haveLocalShardingInfo(Client* client, const std::string& ns);
/**
* Validates whether the shard chunk version for the specified collection is up to date and if
* not, throws SendStaleConfigException.
*
* It is important (but not enforced) that method be called with the collection locked in at
* least IS mode in order to ensure that the shard version won't change.
*
* @param ns Complete collection namespace to be cheched.
*/
void ensureShardVersionOKOrThrow(OperationContext* txn, const std::string& ns);
/**
* If a migration for the chunk in 'ns' where 'obj' lives is occurring, save this log entry
* if it's relevant. The entries saved here are later transferred to the receiving side of
* the migration. A relevant entry is an insertion, a deletion, or an update.
*/
void logOpForSharding(OperationContext* txn,
const char* opstr,
const char* ns,
const BSONObj& obj,
BSONObj* patt,
bool forMigrateCleanup);
/**
* Checks if 'doc' in 'ns' belongs to a currently migrating chunk.
*
* Note: Must be holding global IX lock when calling this method.
*/
bool isInMigratingChunk(OperationContext* txn, const NamespaceString& ns, const BSONObj& doc);
}
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