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 import java.time.Duration;
  22 import java.time.Instant;
  23 import java.util.ArrayList;
  24 import java.util.List;
  25 import java.util.Map;
  26 import java.util.UUID;
  27 import java.util.concurrent.ScheduledFuture;
  28 import javax.annotation.PostConstruct;
  29 import org.apache.commons.lang3.StringUtils;
  30 import org.onap.dcaegen2.collectors.datafile.model.logging.MdcVariables;
  31 import org.onap.dcaegen2.collectors.datafile.tasks.ScheduledTasks;
  32 import org.slf4j.Logger;
  33 import org.slf4j.LoggerFactory;
  34 import org.slf4j.MDC;
  35 import org.slf4j.Marker;
  36 import org.slf4j.MarkerFactory;
  37 import org.springframework.beans.factory.annotation.Autowired;
  38 import org.springframework.context.annotation.Configuration;
  39 import org.springframework.http.HttpStatus;
  40 import org.springframework.http.ResponseEntity;
  41 import org.springframework.scheduling.TaskScheduler;
  42 import org.springframework.scheduling.annotation.EnableScheduling;
  43 import io.swagger.annotations.ApiOperation;
  44 import reactor.core.publisher.Mono;
  45
  46 /**
  47  * @author <a href="mailto:przemyslaw.wasala@nokia.com">Przemysław Wąsala</a> on 6/13/18
  48  */
  49 @Configuration
  50 @EnableScheduling
  51 public class SchedulerConfig {
  52
  53     private static final Duration SCHEDULING_DELAY_FOR_DATAFILE_COLLECTOR_TASKS = Duration.ofSeconds(15);
  54     private static final Duration SCHEDULING_REQUEST_FOR_CONFIGURATION_DELAY = Duration.ofMinutes(5);
  55     private static final Duration SCHEDULING_DELAY_FOR_DATAFILE_PURGE_CACHE = Duration.ofHours(1);
  56     private static final Logger logger = LoggerFactory.getLogger(SchedulerConfig.class);
  57     private static final Marker ENTRY = MarkerFactory.getMarker("ENTRY");
  58     private static final Marker EXIT = MarkerFactory.getMarker("EXIT");
  59     private static volatile List<ScheduledFuture<?>> scheduledFutureList = new ArrayList<>();
  60     private Map<String, String> contextMap;
  61
  62     private final TaskScheduler taskScheduler;
  63     private final ScheduledTasks scheduledTask;
  64     private final CloudConfiguration cloudConfiguration;
  65
  66     @Autowired
  67     public SchedulerConfig(TaskScheduler taskScheduler, ScheduledTasks scheduledTask,
  68         CloudConfiguration cloudConfiguration) {
  69         this.taskScheduler = taskScheduler;
  70         this.scheduledTask = scheduledTask;
  71         this.cloudConfiguration = cloudConfiguration;
  72     }
  73
  74     /**
  75      * Function which have to stop tasks execution.
  76      *
  77      * @return response entity about status of cancellation operation
  78      */
  79     @ApiOperation(value = "Get response on stopping task execution")
  80     public synchronized Mono<ResponseEntity<String>> getResponseFromCancellationOfTasks() {
  81         scheduledFutureList.forEach(x -> x.cancel(false));
  82         scheduledFutureList.clear();
  83         MdcVariables.setMdcContextMap(contextMap);
  84         logger.info(EXIT, "Stopped Datafile workflow");
  85         MDC.clear();
  86         return Mono.defer(() -> Mono
  87             .just(new ResponseEntity<>("Datafile Service has already been stopped!", HttpStatus.CREATED)));
  88     }
  89
  90     /**
  91      * Function for starting scheduling Datafile workflow.
  92      *
  93      * @return status of operation execution: true - started, false - not started
  94      */
  95     @PostConstruct
  96     @ApiOperation(value = "Start task if possible")
  97     public synchronized boolean tryToStartTask() {
  98         String requestId = MDC.get(REQUEST_ID);
  99         if (StringUtils.isBlank(requestId)) {
 100             MDC.put(REQUEST_ID, UUID.randomUUID().toString());
 101         }
 102         String invocationId = MDC.get(INVOCATION_ID);
 103         if (StringUtils.isBlank(invocationId)) {
 104             MDC.put(INVOCATION_ID, UUID.randomUUID().toString());
 105         }
 106         contextMap = MDC.getCopyOfContextMap();
 107         logger.info(ENTRY, "Start scheduling Datafile workflow");
 108         if (scheduledFutureList.isEmpty()) {
 109             scheduledFutureList.add(taskScheduler.scheduleAtFixedRate(() -> cloudConfiguration.runTask(contextMap), Instant.now(),
 110                     SCHEDULING_REQUEST_FOR_CONFIGURATION_DELAY));
 111             scheduledFutureList.add(taskScheduler.scheduleWithFixedDelay(() -> scheduledTask.scheduleMainDatafileEventTask(contextMap),
 112                     SCHEDULING_DELAY_FOR_DATAFILE_COLLECTOR_TASKS));
 113             scheduledFutureList.add(taskScheduler.scheduleWithFixedDelay(() -> scheduledTask.purgeCachedInformation(Instant.now()),
 114                    SCHEDULING_DELAY_FOR_DATAFILE_PURGE_CACHE));
 115
 116             return true;
 117         } else {
 118             return false;
 119         }
 120
 121     }
 122 }