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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/client/remote_command_targeter_factory_impl.h"

#include "mongo/base/status_with.h"
#include "mongo/client/connection_string.h"
#include "mongo/client/remote_command_targeter_rs.h"
#include "mongo/client/remote_command_targeter_standalone.h"
#include "mongo/stdx/memory.h"
#include "mongo/util/assert_util.h"

namespace mongo {

RemoteCommandTargeterFactoryImpl::RemoteCommandTargeterFactoryImpl() = default;

RemoteCommandTargeterFactoryImpl::~RemoteCommandTargeterFactoryImpl() = default;

std::unique_ptr<RemoteCommandTargeter> RemoteCommandTargeterFactoryImpl::create(
    const ConnectionString& connStr) {
    switch (connStr.type()) {
        case ConnectionString::MASTER:
        case ConnectionString::CUSTOM:
            invariant(connStr.getServers().size() == 1);
            return stdx::make_unique<RemoteCommandTargeterStandalone>(connStr.getServers().front());
        case ConnectionString::SET:
            return stdx::make_unique<RemoteCommandTargeterRS>(connStr.getSetName(),
                                                              connStr.getServers());
        // These connections should never be seen
        case ConnectionString::INVALID:
        case ConnectionString::LOCAL:
            MONGO_UNREACHABLE;
    }
    MONGO_UNREACHABLE;
}

}  // namespace mongo