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89 lines
2.3 KiB
Java
89 lines
2.3 KiB
Java
package org.gcube.contentmanagement.blobstorage.service.operation;
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//import org.apache.log4j.Logger;
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//import org.gcube.common.core.utils.logging.GCUBELog;
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import org.gcube.contentmanagement.blobstorage.resource.MyFile;
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import org.gcube.contentmanagement.blobstorage.transport.backend.util.Costants;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.util.Vector;
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/**
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* A monitor class for the concurrent operations
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* @author Roberto Cirillo (ISTI - CNR)
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*
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*/
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public class Monitor {
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/**
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* Logger for this class
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*/
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// private static final GCUBELog logger = new GCUBELog(Monitor.class);
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final Logger logger=LoggerFactory.getLogger(Monitor.class);
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// request queue
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private Vector<MyFile> requestQueue = new Vector<MyFile>();
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// fetch the first request in the queue
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public synchronized MyFile getRequest(){
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if (logger.isDebugEnabled()) {
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logger.debug("getRequest() - start");
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}
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while (requestQueue.size() == 0){
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try {
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wait(10000);
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}
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catch (InterruptedException e){
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logger.error("getRequest()", e);
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}
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}
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MyFile myFile=requestQueue.remove(0);
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notifyAll();
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if (logger.isDebugEnabled()) {
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logger.debug("getRequest() - end");
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}
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return myFile;
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}
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public synchronized MyFile getRequest(ChunkProducer producer){
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if (logger.isDebugEnabled()) {
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logger.debug("getRequest(ChunkProducer) - start");
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}
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while (requestQueue.size() == 0){
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try {
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wait();
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}
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catch (InterruptedException e){
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logger.error("getRequest(ChunkProducer)", e);
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}
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}
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MyFile myFile=requestQueue.remove(0);
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notifyAll();
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if (logger.isDebugEnabled()) {
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logger.debug("getRequest(ChunkProducer) - end");
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}
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return myFile;
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}
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// Accoda una nuova richiesta
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public synchronized void putRequest(MyFile richiesta){
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if (logger.isDebugEnabled()) {
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logger.debug("putRequest(MyFile) - start");
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logger.debug("request in queue, queue size: "+requestQueue.size());
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}
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while (requestQueue.size() > Costants.MAX_THREAD){
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try {
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wait();
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}
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catch (InterruptedException e){
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logger.error("putRequest(MyFile)", e);
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}
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}
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requestQueue.addElement(richiesta);
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notifyAll();
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if (logger.isDebugEnabled()) {
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logger.debug("putRequest(MyFile) - end");
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}
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}
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}
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