61 lines
1.5 KiB
Java
61 lines
1.5 KiB
Java
package eu.dnetlib.openaire.common;
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import java.util.List;
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import java.util.concurrent.*;
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import javax.annotation.PostConstruct;
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import javax.annotation.PreDestroy;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.springframework.stereotype.Component;
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@Component
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public class OperationManager {
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private static final Log log = LogFactory.getLog(OperationManager.class);
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private static final long SLEEP_TIME = 1000;
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private static final int Q_SIZE = 100;
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private static final int POOL_SIZE = 5;
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private final BlockingQueue<Runnable> ops = new ArrayBlockingQueue<>(Q_SIZE);
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private ExecutorService executor;
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@PostConstruct
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public void init() {
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executor = getExecutor();
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}
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public int dropAll() {
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final List<Runnable> lostOperations = executor.shutdownNow();
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log.warn(String.format("discarding %s operations", lostOperations.size()));
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executor = getExecutor();
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return lostOperations.size();
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}
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public int getOpSize() {
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return ops.size();
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}
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public void addOperation(final Runnable op) {
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executor.execute(op);
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}
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@PreDestroy
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public void tearDown() throws InterruptedException {
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executor.shutdown();
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final boolean done = executor.awaitTermination(SLEEP_TIME, TimeUnit.MILLISECONDS);
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log.debug(String.format("All operations were completed so far? %s", done));
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}
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// HELPERS
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private ThreadPoolExecutor getExecutor() {
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return new ThreadPoolExecutor(POOL_SIZE, POOL_SIZE,0L, TimeUnit.MILLISECONDS, ops);
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}
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}
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