/*
* Copyright 2014-2016 CyberVision, Inc.
*
* 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.kaaproject.kaa.client.context;
import org.kaaproject.kaa.client.KaaClient;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.ScheduledExecutorService;
/**
* Responsible for creation of {@link ExecutorService executor} instances for
* SDK internal usage. Implementation should not manage created
* {@link ExecutorService executor} life-cycle. Executors will be stopped during
* {@link KaaClient#stop()}, thus {@link ExecutorService executor} instances
* should not be cached in context or context should check shutdown status
* before return of cached value.
*
* @author Andrew Shvayka
*/
public interface ExecutorContext {
/**
* Initialize executors.
*/
void init();
/**
* Stops executors.
*/
void stop();
/**
* Executes lifecycle events/commands of Kaa client.
*
* @return the lifecycle executor
*/
ExecutorService getLifeCycleExecutor();
/**
* Executes user API calls to SDK client. For example, serializing of log
* records before submit to transport.
*
* @return the API executor
*/
ExecutorService getApiExecutor();
/**
* Executes callback methods provided by SDK client user.
*
* @return the callback executor
*/
ExecutorService getCallbackExecutor();
/**
* Executes scheduled tasks(periodically if needed) as log upload.
*
* @return the scheduled executor
*/
ScheduledExecutorService getScheduledExecutor();
}