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/**
* Copyright (C) 2015 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/dbmessage.h"
#include "mongo/db/jsobj.h"
#include "mongo/rpc/legacy_reply_builder.h"
#include "mongo/rpc/metadata.h"
#include "mongo/stdx/memory.h"
#include "mongo/util/assert_util.h"
namespace mongo {
namespace rpc {
LegacyReplyBuilder::LegacyReplyBuilder()
: LegacyReplyBuilder(stdx::make_unique<Message>())
{}
LegacyReplyBuilder::LegacyReplyBuilder(std::unique_ptr<Message> message)
: _message{std::move(message)} {
_builder.skip(sizeof(QueryResult::Value));
}
LegacyReplyBuilder::~LegacyReplyBuilder() {}
LegacyReplyBuilder& LegacyReplyBuilder::setMetadata(BSONObj metadata) {
invariant(_state == State::kMetadata);
_metadata = std::move(metadata);
_state = State::kCommandReply;
return *this;
}
LegacyReplyBuilder& LegacyReplyBuilder::setRawCommandReply(BSONObj commandReply) {
invariant(_state == State::kCommandReply);
BSONObj downconvertedCommandReply = uassertStatusOK(
rpc::downconvertReplyMetadata(std::move(commandReply), std::move(_metadata))
);
downconvertedCommandReply.appendSelfToBufBuilder(_builder);
_state = State::kOutputDocs;
return *this;
}
LegacyReplyBuilder& LegacyReplyBuilder::addOutputDocs(DocumentRange outputDocs) {
invariant(_state == State::kOutputDocs);
// no op
return *this;
}
LegacyReplyBuilder& LegacyReplyBuilder::addOutputDoc(BSONObj outputDoc) {
invariant(_state == State::kOutputDocs);
// no op
return *this;
}
ReplyBuilderInterface::State LegacyReplyBuilder::getState() const {
return _state;
}
std::unique_ptr<Message> LegacyReplyBuilder::done() {
invariant(_state == State::kOutputDocs);
std::unique_ptr<Message> message = stdx::make_unique<Message>();
QueryResult::View qr = _builder.buf();
qr.setResultFlagsToOk();
qr.msgdata().setLen(_builder.len());
qr.msgdata().setOperation(opReply);
qr.setCursorId(0);
qr.setStartingFrom(0);
qr.setNReturned(1);
_builder.decouple();
message->setData(qr.view2ptr(), true);
_state = State::kDone;
return std::move(message);
}
} // namespace rpc
} // namespace mongo
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