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 java.time.Duration;
  20 import java.time.Instant;
  21 import java.util.ArrayList;
  22 import java.util.List;
  23 import java.util.Map;
  24 import java.util.concurrent.ScheduledFuture;
  25
  26 import javax.annotation.PostConstruct;
  27
  28 import org.onap.dcaegen2.collectors.datafile.model.logging.MappedDiagnosticContext;
  29 import org.onap.dcaegen2.collectors.datafile.tasks.ScheduledTasks;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32 import org.slf4j.MDC;
  33 import org.springframework.beans.factory.annotation.Autowired;
  34 import org.springframework.context.annotation.Configuration;
  35 import org.springframework.http.HttpStatus;
  36 import org.springframework.http.ResponseEntity;
  37 import org.springframework.scheduling.TaskScheduler;
  38 import org.springframework.scheduling.annotation.EnableScheduling;
  39
  40 import io.swagger.annotations.ApiOperation;
  41 import reactor.core.publisher.Mono;
  42
  43 /**
  44  * Api for starting and stopping DFC.
  45  *
  46  * @author <a href="mailto:przemyslaw.wasala@nokia.com">Przemysław Wąsala</a> on 6/13/18
  47  * @author <a href="mailto:henrik.b.andersson@est.tech">Henrik Andersson</a>
  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 List<ScheduledFuture<?>> scheduledFutureList = new ArrayList<>();
  58     private Map<String, String> contextMap;
  59
  60     private final TaskScheduler taskScheduler;
  61     private final ScheduledTasks scheduledTask;
  62     private final CloudConfiguration cloudConfiguration;
  63
  64     /**
  65      * Constructor.
  66      *
  67      * @param taskScheduler The scheduler used to schedule the tasks.
  68      * @param scheduledTasks The scheduler that will actually handle the tasks.
  69      * @param cloudConfiguration The DFC configuration.
  70      */
  71     @Autowired
  72     public SchedulerConfig(TaskScheduler taskScheduler, ScheduledTasks scheduledTasks,
  73             CloudConfiguration cloudConfiguration) {
  74         this.taskScheduler = taskScheduler;
  75         this.scheduledTask = scheduledTasks;
  76         this.cloudConfiguration = cloudConfiguration;
  77     }
  78
  79     /**
  80      * Function which have to stop tasks execution.
  81      *
  82      * @return response entity about status of cancellation operation
  83      */
  84     @ApiOperation(value = "Get response on stopping task execution")
  85     public synchronized Mono<ResponseEntity<String>> getResponseFromCancellationOfTasks() {
  86         scheduledFutureList.forEach(x -> x.cancel(false));
  87         scheduledFutureList.clear();
  88         MDC.setContextMap(contextMap);
  89         logger.info("Stopped Datafile workflow");
  90         MDC.clear();
  91         return Mono.just(new ResponseEntity<>("Datafile Service has already been stopped!", HttpStatus.CREATED));
  92     }
  93
  94     /**
  95      * Function for starting scheduling Datafile workflow.
  96      *
  97      * @return status of operation execution: true - started, false - not started
  98      */
  99     @PostConstruct
 100     @ApiOperation(value = "Start task if possible")
 101     public synchronized boolean tryToStartTask() {
 102         contextMap = MappedDiagnosticContext.initializeTraceContext();
 103         logger.info("Start scheduling Datafile workflow");
 104         if (scheduledFutureList.isEmpty()) {
 105             scheduledFutureList.add(taskScheduler.scheduleAtFixedRate(cloudConfiguration::runTask,
 106                     Instant.now(), SCHEDULING_REQUEST_FOR_CONFIGURATION_DELAY));
 107             scheduledFutureList.add(
 108                     taskScheduler.scheduleWithFixedDelay(scheduledTask::executeDatafileMainTask,
 109                             SCHEDULING_DELAY_FOR_DATAFILE_COLLECTOR_TASKS));
 110             scheduledFutureList
 111                     .add(taskScheduler.scheduleWithFixedDelay(() -> scheduledTask.purgeCachedInformation(Instant.now()),
 112                             SCHEDULING_DELAY_FOR_DATAFILE_PURGE_CACHE));
 113
 114             return true;
 115         } else {
 116             return false;
 117         }
 118
 119     }
 120 }