io.zeebe.logstreams.impl.service.LogStorageAppenderService 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.dispatcher.Subscription;
import io.zeebe.logstreams.impl.LogStorageAppender;
import io.zeebe.logstreams.spi.LogStorage;
import io.zeebe.servicecontainer.*;
import io.zeebe.util.sched.SchedulingHints;
import io.zeebe.util.sched.channel.ActorConditions;

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

    private final int maxAppendBlockSize;

    private LogStorageAppender service;
    private ActorConditions onLogStorageAppendedConditions;

    public LogStorageAppenderService(ActorConditions onLogStorageAppendedConditions, int maxAppendBlockSize)
    {
        this.onLogStorageAppendedConditions = onLogStorageAppendedConditions;
        this.maxAppendBlockSize = maxAppendBlockSize;
    }

    @Override
    public void start(ServiceStartContext startContext)
    {
        final LogStorage logStorage = logStorageInjector.getValue();
        final Subscription subscription = appenderSubscriptionInjector.getValue();

        service = new LogStorageAppender(startContext.getName(),
            logStorage,
            subscription,
            maxAppendBlockSize,
            onLogStorageAppendedConditions);

        startContext.async(startContext.getScheduler().submitActor(service, true, SchedulingHints.ioBound((short) 0)));
    }

    @Override
    public void stop(ServiceStopContext stopContext)
    {
        stopContext.async(service.close());
    }

    @Override
    public LogStorageAppender get()
    {
        return service;
    }

    public Injector getLogStorageInjector()
    {
        return logStorageInjector;
    }

    public Injector getAppenderSubscriptionInjector()
    {
        return appenderSubscriptionInjector;
    }
}