gerrit.onap Code Review - dcaegen2/collectors/datafile.git/blob

   1 /*-
   2  * ============LICENSE_START======================================================================
   3  * Copyright (C) 2018 NOKIA Intellectual Property, 2018-2019 Nordix Foundation. All rights reserved.
   4  * ===============================================================================================
   5  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
   6  * in compliance with the License. You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software distributed under the License
  11  * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
  12  * or implied. See the License for the specific language governing permissions and limitations under
  13  * the License.
  14  * ============LICENSE_END========================================================================
  15  */
  16
  17 package org.onap.dcaegen2.collectors.datafile.configuration;
  18
  19 import static org.onap.dcaegen2.collectors.datafile.model.logging.MdcVariables.INVOCATION_ID;
  20 import static org.onap.dcaegen2.collectors.datafile.model.logging.MdcVariables.REQUEST_ID;
  21
  22 import java.time.Duration;
  23 import java.time.Instant;
  24 import java.util.ArrayList;
  25 import java.util.List;
  26 import java.util.Map;
  27 import java.util.UUID;
  28 import java.util.concurrent.ScheduledFuture;
  29
  30 import javax.annotation.PostConstruct;
  31
  32 import org.apache.commons.lang3.StringUtils;
  33 import org.onap.dcaegen2.collectors.datafile.model.logging.MdcVariables;
  34 import org.onap.dcaegen2.collectors.datafile.tasks.ScheduledTasks;
  35 import org.slf4j.Logger;
  36 import org.slf4j.LoggerFactory;
  37 import org.slf4j.MDC;
  38 import org.slf4j.Marker;
  39 import org.slf4j.MarkerFactory;
  40 import org.springframework.beans.factory.annotation.Autowired;
  41 import org.springframework.context.annotation.Configuration;
  42 import org.springframework.http.HttpStatus;
  43 import org.springframework.http.ResponseEntity;
  44 import org.springframework.scheduling.TaskScheduler;
  45 import org.springframework.scheduling.annotation.EnableScheduling;
  46
  47 import io.swagger.annotations.ApiOperation;
  48 import reactor.core.publisher.Mono;
  49
  50 /**
  51  * Api for starting and stopping DFC.
  52  *
  53  * @author <a href="mailto:przemyslaw.wasala@nokia.com">Przemysław Wąsala</a> on 6/13/18
  54  * @author <a href="mailto:henrik.b.andersson@est.tech">Henrik Andersson</a>
  55  */
  56 @Configuration
  57 @EnableScheduling
  58 public class SchedulerConfig {
  59
  60     private static final Duration SCHEDULING_DELAY_FOR_DATAFILE_COLLECTOR_TASKS = Duration.ofSeconds(15);
  61     private static final Duration SCHEDULING_REQUEST_FOR_CONFIGURATION_DELAY = Duration.ofMinutes(5);
  62     private static final Duration SCHEDULING_DELAY_FOR_DATAFILE_PURGE_CACHE = Duration.ofHours(1);
  63     private static final Logger logger = LoggerFactory.getLogger(SchedulerConfig.class);
  64     private static final Marker ENTRY = MarkerFactory.getMarker("ENTRY");
  65     private static final Marker EXIT = MarkerFactory.getMarker("EXIT");
  66     private static volatile List<ScheduledFuture<?>> scheduledFutureList = new ArrayList<>();
  67     private Map<String, String> contextMap;
  68
  69     private final TaskScheduler taskScheduler;
  70     private final ScheduledTasks scheduledTask;
  71     private final CloudConfiguration cloudConfiguration;
  72
  73     /**
  74      * Constructor.
  75      *
  76      * @param taskScheduler The scheduler used to schedule the tasks.
  77      * @param scheduledTasks The scheduler that will actually handle the tasks.
  78      * @param cloudConfiguration The DFC configuration.
  79      */
  80     @Autowired
  81     public SchedulerConfig(TaskScheduler taskScheduler, ScheduledTasks scheduledTasks,
  82             CloudConfiguration cloudConfiguration) {
  83         this.taskScheduler = taskScheduler;
  84         this.scheduledTask = scheduledTasks;
  85         this.cloudConfiguration = cloudConfiguration;
  86     }
  87
  88     /**
  89      * Function which have to stop tasks execution.
  90      *
  91      * @return response entity about status of cancellation operation
  92      */
  93     @ApiOperation(value = "Get response on stopping task execution")
  94     public synchronized Mono<ResponseEntity<String>> getResponseFromCancellationOfTasks() {
  95         scheduledFutureList.forEach(x -> x.cancel(false));
  96         scheduledFutureList.clear();
  97         MdcVariables.setMdcContextMap(contextMap);
  98         logger.info(EXIT, "Stopped Datafile workflow");
  99         MDC.clear();
 100         return Mono.defer(() -> Mono
 101                 .just(new ResponseEntity<>("Datafile Service has already been stopped!", HttpStatus.CREATED)));
 102     }
 103
 104     /**
 105      * Function for starting scheduling Datafile workflow.
 106      *
 107      * @return status of operation execution: true - started, false - not started
 108      */
 109     @PostConstruct
 110     @ApiOperation(value = "Start task if possible")
 111     public synchronized boolean tryToStartTask() {
 112         String requestId = MDC.get(REQUEST_ID);
 113         if (StringUtils.isBlank(requestId)) {
 114             MDC.put(REQUEST_ID, UUID.randomUUID().toString());
 115         }
 116         String invocationId = MDC.get(INVOCATION_ID);
 117         if (StringUtils.isBlank(invocationId)) {
 118             MDC.put(INVOCATION_ID, UUID.randomUUID().toString());
 119         }
 120         contextMap = MDC.getCopyOfContextMap();
 121         logger.info(ENTRY, "Start scheduling Datafile workflow");
 122         if (scheduledFutureList.isEmpty()) {
 123             scheduledFutureList.add(taskScheduler.scheduleAtFixedRate(() -> cloudConfiguration.runTask(contextMap),
 124                     Instant.now(), SCHEDULING_REQUEST_FOR_CONFIGURATION_DELAY));
 125             scheduledFutureList.add(
 126                     taskScheduler.scheduleWithFixedDelay(() -> scheduledTask.scheduleMainDatafileEventTask(contextMap),
 127                             SCHEDULING_DELAY_FOR_DATAFILE_COLLECTOR_TASKS));
 128             scheduledFutureList
 129                     .add(taskScheduler.scheduleWithFixedDelay(() -> scheduledTask.purgeCachedInformation(Instant.now()),
 130                             SCHEDULING_DELAY_FOR_DATAFILE_PURGE_CACHE));
 131
 132             return true;
 133         } else {
 134             return false;
 135         }
 136
 137     }
 138 }