io.zeebe.logstreams.impl.service.LogBlockIndexWriterService Maven / Gradle / Ivy

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/*
 * Copyright © 2017 camunda services GmbH ([email protected])
 *
 * 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 io.zeebe.logstreams.impl.service;

import io.zeebe.logstreams.impl.LogBlockIndexWriter;
import io.zeebe.logstreams.impl.LogStreamBuilder;
import io.zeebe.logstreams.impl.log.index.LogBlockIndex;
import io.zeebe.logstreams.spi.LogStorage;
import io.zeebe.servicecontainer.*;
import io.zeebe.util.sched.ActorScheduler;
import io.zeebe.util.sched.SchedulingHints;

public class LogBlockIndexWriterService implements Service
{
    private final Injector logBlockIndexInjector = new Injector<>();
    private final Injector logStorageInjector = new Injector<>();

    private LogBlockIndexWriter logBlockIndexWriter;
    private LogStreamBuilder logStreamBuilder;

    public LogBlockIndexWriterService(LogStreamBuilder logStreamBuilder)
    {
        this.logStreamBuilder = logStreamBuilder;
    }

    @Override
    public void start(ServiceStartContext startContext)
    {
        final LogBlockIndex logBlockIndex = logBlockIndexInjector.getValue();
        final LogStorage logStorage = logStorageInjector.getValue();
        final ActorScheduler scheduler = startContext.getScheduler();

        logBlockIndexWriter = new LogBlockIndexWriter(startContext.getName(),
            logStreamBuilder,
            logStorage,
            logBlockIndex,
            scheduler.getMetricsManager());

        startContext.async(scheduler.submitActor(logBlockIndexWriter, true, SchedulingHints.ioBound((short) 0)));
    }

    @Override
    public void stop(ServiceStopContext stopContext)
    {
        stopContext.async(logBlockIndexWriter.closeAsync());
    }

    @Override
    public LogBlockIndexWriter get()
    {
        return logBlockIndexWriter;
    }

    public Injector getLogBlockIndexInjector()
    {
        return logBlockIndexInjector;
    }

    public Injector getLogStorageInjector()
    {
        return logStorageInjector;
    }
}