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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/rpc/command_request_builder.h"
#include <utility>
#include "mongo/stdx/memory.h"
#include "mongo/util/assert_util.h"
namespace mongo {
namespace rpc {
CommandRequestBuilder::CommandRequestBuilder()
: _message{stdx::make_unique<Message>()}
{}
CommandRequestBuilder::~CommandRequestBuilder()
{}
CommandRequestBuilder::CommandRequestBuilder(std::unique_ptr<Message> message)
: _message{std::move(message)}
{}
CommandRequestBuilder& CommandRequestBuilder::setDatabase(StringData database) {
invariant(_state == State::kDatabase);
_builder.appendStr(database);
_state = State::kCommandName;
return *this;
}
CommandRequestBuilder& CommandRequestBuilder::setCommandName(StringData commandName) {
invariant(_state == State::kCommandName);
_builder.appendStr(commandName);
_state = State::kMetadata;
return *this;
}
CommandRequestBuilder& CommandRequestBuilder::setMetadata(BSONObj metadata) {
invariant(_state == State::kMetadata);
metadata.appendSelfToBufBuilder(_builder);
_state = State::kCommandArgs;
return *this;
}
CommandRequestBuilder& CommandRequestBuilder::setCommandArgs(BSONObj commandArgs) {
invariant(_state == State::kCommandArgs);
commandArgs.appendSelfToBufBuilder(_builder);
_state = State::kInputDocs;
return *this;
}
CommandRequestBuilder& CommandRequestBuilder::addInputDocs(DocumentRange inputDocs) {
invariant(_state == State::kInputDocs);
auto rangeData = inputDocs.data();
_builder.appendBuf(rangeData.data(), rangeData.length());
return *this;
}
CommandRequestBuilder& CommandRequestBuilder::addInputDoc(BSONObj inputDoc) {
invariant(_state == State::kInputDocs);
inputDoc.appendSelfToBufBuilder(_builder);
return *this;
}
RequestBuilderInterface::State CommandRequestBuilder::getState() const {
return _state;
}
Protocol CommandRequestBuilder::getProtocol() const {
return rpc::Protocol::kOpCommandV1;
}
std::unique_ptr<Message> CommandRequestBuilder::done() {
invariant(_state == State::kInputDocs);
// TODO: we can elide a large copy here by transferring the internal buffer of
// the BufBuilder to the Message.
_message->setData(dbCommand, _builder.buf(), _builder.len());
_state = State::kDone;
return std::move(_message);
}
} // namespace rpc
} // namespace mongo
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