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/*-
* ============LICENSE_START=======================================================
* ONAP : APPC
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Copyright (C) 2017 Amdocs
* =============================================================================
* 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.
*
* ECOMP is a trademark and service mark of AT&T Intellectual Property.
* ============LICENSE_END=========================================================
*/
package org.openecomp.appc.client.impl.core;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
import java.util.concurrent.TimeoutException;
/** Handles sync requests
*/
class SyncRequestResponseHandler<T> extends AbstractRequestResponseHandler {
private final EELFLogger LOG = EELFManager.getInstance().getLogger(SyncRequestResponseHandler.class);
private T responseObject = null;
private CoreException coreException = null;
private TimeoutException timeoutException = null;
SyncRequestResponseHandler(String corrID,
ICoreResponseHandler callback,
CoreManager coreManager){
super(corrID, callback, coreManager);
}
/**
* Calls API callback for getting response object. in case of complete response notifies consumer
* thread for receiving response
* @param response - Response
* @param type - Type of Response
*/
synchronized void runTask(String response, String type) {
try {
responseObject = ((ICoreSyncResponseHandler) businessCallback).onResponse(response, type);
} catch (CoreException e) {
coreException = e;
}
if(responseObject != null || coreException != null) {
notify();
}
}
/**
* Returns response. goes sleep until coming either timeout event or complete response
*/
public synchronized <T> T getResponse() throws CoreException, TimeoutException {
try{
if(!isResponseReceived()){
wait();
}
if (coreException != null) {
throw coreException;
}
if ( timeoutException != null) {
throw timeoutException;
}
} catch (InterruptedException e) {
throw new CoreException(e);
} finally{
coreManager.unregisterHandler(corrID);
coreManager.cancelTimer(corrID);
}
return (T) responseObject;
}
/**
* indicates if a response received
* @return
*/
private boolean isResponseReceived() {
return responseObject != null;
}
@Override
public synchronized void onTimeOut() {
LOG.error("sync response handler on timeout correlation ID <" + corrID + ">.");
timeoutException = new TimeoutException("timeout for request with correlation-id " + corrID);
notify();
}
}
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