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package org.openecomp.sdc.be.components.distribution.engine;
import com.google.common.util.concurrent.ThreadFactoryBuilder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;
import java.lang.Thread.UncaughtExceptionHandler;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ThreadFactory;
@Component("executorFactory")
/**
* Allows to create next kinds of single thread executors: SingleThreadExecutor and SingleThreadScheduledExecutor
*/
public class ExecutorFactory {
private static final Logger logger = LoggerFactory.getLogger(EnvironmentsEngine.class);
public ExecutorService create(String name, UncaughtExceptionHandler exceptionHandler){
logger.info("Going to create single thread executor. ");
ThreadFactory threadFactory = createThreadFactory(name, exceptionHandler);
return Executors.newSingleThreadExecutor(threadFactory);
}
public ScheduledExecutorService createScheduled(String name){
logger.info("Going to create single thread scheduled executor. ");
ThreadFactory threadFactory = createThreadFactory(name,
(t, e) -> LoggerFactory.getLogger(UncaughtExceptionHandler.class).error("An error occurred: ", e));
return Executors.newSingleThreadScheduledExecutor(threadFactory);
}
private ThreadFactory createThreadFactory(String name, UncaughtExceptionHandler exceptionHandler) {
String nameFormat = name + "-%d";
return new ThreadFactoryBuilder()
.setThreadFactory(Executors.defaultThreadFactory())
.setNameFormat(nameFormat)
.setUncaughtExceptionHandler(exceptionHandler)
.setDaemon(true)
.build();
}
}
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