org.apache.aurora.scheduler.storage.db.DbSchedulerStore.java Source code

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Here is the source code for org.apache.aurora.scheduler.storage.db.DbSchedulerStore.java

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/**
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.aurora.scheduler.storage.db;

import java.util.Objects;

import com.google.common.base.Optional;
import com.google.inject.Inject;

import org.apache.aurora.scheduler.storage.SchedulerStore;

import static org.apache.aurora.common.inject.TimedInterceptor.Timed;

/**
 * A relational database-backed scheduler store.
 */
class DbSchedulerStore implements SchedulerStore.Mutable {

    private final FrameworkIdMapper mapper;

    @Inject
    DbSchedulerStore(FrameworkIdMapper mapper) {
        this.mapper = Objects.requireNonNull(mapper);
    }

    @Timed("scheduler_store_save_framework_id")
    @Override
    public void saveFrameworkId(String frameworkId) {
        mapper.insert(Objects.requireNonNull(frameworkId));
    }

    @Timed("scheduler_store_fetch_framework_id")
    @Override
    public Optional<String> fetchFrameworkId() {
        return Optional.fromNullable(mapper.select());
    }
}