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/**
* Copyright (C) 2016 MongoDB 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.
*/
#include "mongo/platform/basic.h"
#include "mongo/db/s/start_chunk_clone_request.h"
#include "mongo/base/status_with.h"
#include "mongo/bson/bsonobjbuilder.h"
#include "mongo/bson/util/bson_extract.h"
namespace mongo {
namespace {
const char kRecvChunkStart[] = "_recvChunkStart";
const char kFromShardConnectionString[] = "from";
const char kFromShardId[] = "fromShardName";
const char kToShardId[] = "toShardName";
const char kChunkMinKey[] = "min";
const char kChunkMaxKey[] = "max";
const char kShardKeyPattern[] = "shardKeyPattern";
} // namespace
StartChunkCloneRequest::StartChunkCloneRequest(NamespaceString nss,
MigrationSessionId sessionId,
MigrationSecondaryThrottleOptions secondaryThrottle)
: _nss(std::move(nss)),
_sessionId(std::move(sessionId)),
_secondaryThrottle(std::move(secondaryThrottle)) {}
StatusWith<StartChunkCloneRequest> StartChunkCloneRequest::createFromCommand(NamespaceString nss,
const BSONObj& obj) {
auto secondaryThrottleStatus = MigrationSecondaryThrottleOptions::createFromCommand(obj);
if (!secondaryThrottleStatus.isOK()) {
return secondaryThrottleStatus.getStatus();
}
auto sessionIdStatus = MigrationSessionId::extractFromBSON(obj);
if (!sessionIdStatus.isOK()) {
return sessionIdStatus.getStatus();
}
StartChunkCloneRequest request(std::move(nss),
std::move(sessionIdStatus.getValue()),
std::move(secondaryThrottleStatus.getValue()));
{
std::string fromShardConnectionString;
Status status =
bsonExtractStringField(obj, kFromShardConnectionString, &fromShardConnectionString);
if (!status.isOK()) {
return status;
}
auto fromShardConnectionStringStatus = ConnectionString::parse(fromShardConnectionString);
if (!fromShardConnectionStringStatus.isOK()) {
return fromShardConnectionStringStatus.getStatus();
}
request._fromShardCS = std::move(fromShardConnectionStringStatus.getValue());
}
{
std::string fromShard;
Status status = bsonExtractStringField(obj, kFromShardId, &fromShard);
request._fromShardId = fromShard;
if (!status.isOK()) {
return status;
}
}
{
std::string toShard;
Status status = bsonExtractStringField(obj, kToShardId, &toShard);
request._toShardId = toShard;
if (!status.isOK()) {
return status;
}
}
{
BSONElement elem;
Status status = bsonExtractTypedField(obj, kChunkMinKey, BSONType::Object, &elem);
if (!status.isOK()) {
return status;
}
request._minKey = elem.Obj().getOwned();
if (request._minKey.isEmpty()) {
return Status(ErrorCodes::UnsupportedFormat, "The chunk min key cannot be empty");
}
}
{
BSONElement elem;
Status status = bsonExtractTypedField(obj, kChunkMaxKey, BSONType::Object, &elem);
if (!status.isOK()) {
return status;
}
request._maxKey = elem.Obj().getOwned();
if (request._maxKey.isEmpty()) {
return Status(ErrorCodes::UnsupportedFormat, "The chunk max key cannot be empty");
}
}
{
BSONElement elem;
Status status = bsonExtractTypedField(obj, kShardKeyPattern, BSONType::Object, &elem);
if (!status.isOK()) {
return status;
}
request._shardKeyPattern = elem.Obj().getOwned();
if (request._shardKeyPattern.isEmpty()) {
return Status(ErrorCodes::UnsupportedFormat, "The shard key pattern cannot be empty");
}
}
return request;
}
void StartChunkCloneRequest::appendAsCommand(
BSONObjBuilder* builder,
const NamespaceString& nss,
const MigrationSessionId& sessionId,
const ConnectionString& fromShardConnectionString,
const ShardId& fromShardId,
const ShardId& toShardId,
const BSONObj& chunkMinKey,
const BSONObj& chunkMaxKey,
const BSONObj& shardKeyPattern,
const MigrationSecondaryThrottleOptions& secondaryThrottle) {
invariant(builder->asTempObj().isEmpty());
invariant(nss.isValid());
invariant(fromShardConnectionString.isValid());
builder->append(kRecvChunkStart, nss.ns());
sessionId.append(builder);
builder->append(kFromShardConnectionString, fromShardConnectionString.toString());
builder->append(kFromShardId, fromShardId.toString());
builder->append(kToShardId, toShardId.toString());
builder->append(kChunkMinKey, chunkMinKey);
builder->append(kChunkMaxKey, chunkMaxKey);
builder->append(kShardKeyPattern, shardKeyPattern);
secondaryThrottle.append(builder);
}
} // namespace mongo
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