diff options
Diffstat (limited to 'appc-client/client-lib/src/main/java/org/onap/appc/client/impl/core/SyncRequestResponseHandler.java')
-rw-r--r-- | appc-client/client-lib/src/main/java/org/onap/appc/client/impl/core/SyncRequestResponseHandler.java | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/appc-client/client-lib/src/main/java/org/onap/appc/client/impl/core/SyncRequestResponseHandler.java b/appc-client/client-lib/src/main/java/org/onap/appc/client/impl/core/SyncRequestResponseHandler.java new file mode 100644 index 000000000..90b0a9926 --- /dev/null +++ b/appc-client/client-lib/src/main/java/org/onap/appc/client/impl/core/SyncRequestResponseHandler.java @@ -0,0 +1,107 @@ +/*- + * ============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.onap.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(); + } + + + + +} |