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author | 2018-03-14 02:07:32 -0400 | |
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committer | 2018-03-14 04:08:41 -0400 | |
commit | 38f720752af4d4aad8c4e467a288d9048659f688 (patch) | |
tree | e81066a8b5c77272e30fb57a64999573c4db4d86 /common/src/main/java/org/openecomp/mso/client/dmaap/DmaapConsumer.java | |
parent | aee3d223f92a6f250f43e17558a2dfd576ff7294 (diff) |
AT&T 1712 and 1802 release code
This is code from AT&T's 1712 and 1802 releases.
Change-Id: Ie1e85851e94bc66c4d9514a0226c221939531a04
Issue-ID: SO-425
Signed-off-by: Rob Daugherty <rd472p@att.com>
Diffstat (limited to 'common/src/main/java/org/openecomp/mso/client/dmaap/DmaapConsumer.java')
-rw-r--r-- | common/src/main/java/org/openecomp/mso/client/dmaap/DmaapConsumer.java | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/common/src/main/java/org/openecomp/mso/client/dmaap/DmaapConsumer.java b/common/src/main/java/org/openecomp/mso/client/dmaap/DmaapConsumer.java new file mode 100644 index 0000000000..033951612d --- /dev/null +++ b/common/src/main/java/org/openecomp/mso/client/dmaap/DmaapConsumer.java @@ -0,0 +1,131 @@ +/*- + * ============LICENSE_START======================================================= + * ONAP - SO + * ================================================================================ + * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved. + * ================================================================================ + * 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. + * ============LICENSE_END========================================================= + */ + +package org.openecomp.mso.client.dmaap; + +import java.io.FileNotFoundException; +import java.io.IOException; +import java.util.concurrent.TimeUnit; + +import org.openecomp.mso.client.dmaap.exceptions.DMaaPConsumerFailure; +import org.openecomp.mso.client.dmaap.exceptions.ExceededMaximumPollingTime; +import org.openecomp.mso.client.dmaap.rest.RestConsumer; + +import com.google.common.base.Stopwatch; + +public abstract class DmaapConsumer extends DmaapClient { + + public DmaapConsumer() throws FileNotFoundException, IOException { + super("dmaap/default-consumer.properties"); + } + + public Consumer getConsumer() throws FileNotFoundException, IOException { + return new RestConsumer(this.properties); + } + public boolean consume() throws Exception { + + Consumer mrConsumer = this.getConsumer(); + int iterations = 0; + boolean accepted = false; + Stopwatch stopwatch = Stopwatch.createUnstarted(); + try { + while (this.continuePolling()) { + if (stopwatch.elapsed(TimeUnit.MILLISECONDS) >= this.getMaximumElapsedTime()) { + final String message = "exceeded maximum retries on " + this.getRequestId() + " on " + this.getTopic(); + auditLogger.error(message); + throw new ExceededMaximumPollingTime(message); + } + stopwatch.start(); + Iterable<String> itr = mrConsumer.fetch(); + stopwatch.stop(); + for (String message : itr) { + if (!accepted && this.isAccepted(message)) { + auditLogger.info("accepted message found for " + this.getRequestId() + " on " + this.getTopic()); + accepted = true; + } + if (accepted) { + if (this.isFailure(message)) { + this.stopProcessingMessages(); + auditLogger.info("received dmaap message: " + message); + final String errorMsg = "failure received from dmaap topic " + this.getTopic(); + auditLogger.error(errorMsg); + throw new DMaaPConsumerFailure(errorMsg); + } else { + auditLogger.info("received dmaap message: " + message); + this.processMessage(message); + } + } + } + iterations++; + } + return true; + } catch (Exception e ) { + throw e; + } finally { + if (stopwatch.isRunning()) { + stopwatch.stop(); + } + } + } + + /** + * Should this consumer continue to consume messages from the topic? + * @return + */ + public abstract boolean continuePolling(); + /** + * Process a message from a DMaaP topic + * + * @param message + * @throws Exception + */ + public abstract void processMessage(String message) throws Exception; + /** + * Has the request been accepted by the receiving system? + * Should the consumer move to processing messages? + * + * @param message + * @return + */ + public abstract boolean isAccepted(String message); + /** + * has the request failed? + * + * @param message + * @return + */ + public abstract boolean isFailure(String message); + /** + * The request id to filter messages on + * @return + */ + public abstract String getRequestId(); + /** + * Logic that defines when the consumer should stop processing messages + */ + public abstract void stopProcessingMessages(); + + /** + * time in milliseconds + */ + public int getMaximumElapsedTime() { + return 180000; + } +} |