2 * ===============================LICENSE_START======================================
4 * ================================================================================
5 * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============================LICENSE_END===========================================
21 package org.onap.dcae.apod.analytics.cdap.tca.worker;
23 import co.cask.cdap.api.worker.AbstractWorker;
24 import com.google.common.base.Preconditions;
25 import org.onap.dcae.apod.analytics.common.AnalyticsConstants;
26 import org.onap.dcae.apod.analytics.common.exception.DCAEAnalyticsRuntimeException;
27 import org.quartz.Scheduler;
28 import org.quartz.SchedulerException;
29 import org.slf4j.Logger;
30 import org.slf4j.LoggerFactory;
32 import java.util.concurrent.atomic.AtomicBoolean;
34 import static java.lang.String.format;
37 * Base logic for DMaaP Workers which uses scheduler to poll DMaaP MR topics at frequent intervals
39 * @author Rajiv Singla . Creation Date: 12/19/2016.
41 public abstract class BaseTCADMaaPMRWorker extends AbstractWorker {
43 private static final Logger LOG = LoggerFactory.getLogger(BaseTCADMaaPMRWorker.class);
48 protected Scheduler scheduler;
50 * Determines if scheduler is shutdown
52 protected AtomicBoolean isSchedulerShutdown;
58 Preconditions.checkNotNull(scheduler, "Scheduler must not be null");
59 String schedulerName = "";
63 schedulerName = scheduler.getSchedulerName();
65 isSchedulerShutdown.getAndSet(false);
67 } catch (SchedulerException e) {
68 final String errorMessage =
69 format("Error while starting TCA DMaaP MR scheduler name: %s, error: %s", schedulerName, e);
70 throw new DCAEAnalyticsRuntimeException(errorMessage, LOG, e);
73 LOG.info("Successfully started DMaaP MR Scheduler: {}", schedulerName);
75 // indefinite loop which wakes up and confirms scheduler is indeed running
76 while (!isSchedulerShutdown.get()) {
79 Thread.sleep(AnalyticsConstants.TCA_DEFAULT_WORKER_SHUTDOWN_CHECK_INTERVAL_MS);
81 } catch (InterruptedException e) {
83 final String errorMessage =
84 format("Error while checking TCA DMaaP MR Scheduler worker status name: %s, error: %s",
86 Thread.currentThread().interrupt();
87 throw new DCAEAnalyticsRuntimeException(errorMessage, LOG, e);
91 LOG.info("Finished execution of TCA DMaaP MR worker thread: {}", schedulerName);
98 Preconditions.checkNotNull(scheduler, "Scheduler must not be null");
99 String schedulerName = "";
103 schedulerName = scheduler.getSchedulerName();
104 LOG.info("Shutting TCA DMaaP MR Scheduler: {}", schedulerName);
105 scheduler.shutdown();
106 isSchedulerShutdown.getAndSet(true);
108 } catch (SchedulerException e) {
110 final String errorMessage =
111 format("Error while shutting down TCA DMaaP MR Scheduler: name: %s, error: %s", schedulerName, e);
112 throw new DCAEAnalyticsRuntimeException(errorMessage, LOG, e);