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 io.swagger.annotations.ApiOperation;
  20 import java.time.Duration;
  21 import java.time.Instant;
  22 import java.util.ArrayList;
  23 import java.util.HashMap;
  24 import java.util.List;
  25 import java.util.Map;
  26 import java.util.concurrent.ScheduledFuture;
  27 import javax.annotation.PostConstruct;
  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 import reactor.core.publisher.Mono;
  40
  41 /**
  42  * Api for starting and stopping DFC.
  43  *
  44  * @author <a href="mailto:przemyslaw.wasala@nokia.com">Przemysław Wąsala</a> on 6/13/18
  45  * @author <a href="mailto:henrik.b.andersson@est.tech">Henrik Andersson</a>
  46  */
  47 @Configuration
  48 @EnableScheduling
  49 public class SchedulerConfig {
  50
  51     private static final Duration SCHEDULING_DELAY_FOR_DATAFILE_COLLECTOR_TASKS = Duration.ofSeconds(15);
  52     private static final Duration SCHEDULING_DELAY_FOR_DATAFILE_PURGE_CACHE = Duration.ofHours(1);
  53     private static final Logger logger = LoggerFactory.getLogger(SchedulerConfig.class);
  54     private static List<ScheduledFuture<?>> scheduledFutureList = new ArrayList<>();
  55     private Map<String, String> contextMap = new HashMap<>();
  56
  57     private final TaskScheduler taskScheduler;
  58     private final ScheduledTasks scheduledTask;
  59     private final AppConfig configuration;
  60
  61     /**
  62      * Constructor.
  63      *
  64      * @param taskScheduler The scheduler used to schedule the tasks.
  65      * @param scheduledTasks The scheduler that will actually handle the tasks.
  66      * @param configuration The DFC configuration.
  67      */
  68     @Autowired
  69     public SchedulerConfig(TaskScheduler taskScheduler, ScheduledTasks scheduledTasks,
  70             AppConfig configuration) {
  71         this.taskScheduler = taskScheduler;
  72         this.scheduledTask = scheduledTasks;
  73         this.configuration = configuration;
  74     }
  75
  76     /**
  77      * Function which have to stop tasks execution.
  78      *
  79      * @return response entity about status of cancellation operation
  80      */
  81     @ApiOperation(value = "Get response on stopping task execution")
  82     public synchronized Mono<ResponseEntity<String>> getResponseFromCancellationOfTasks() {
  83         scheduledFutureList.forEach(x -> x.cancel(false));
  84         scheduledFutureList.clear();
  85         configuration.stop();
  86         MDC.setContextMap(contextMap);
  87         logger.info("Stopped Datafile workflow");
  88         MDC.clear();
  89         return Mono.just(new ResponseEntity<>("Datafile Service has already been stopped!", HttpStatus.CREATED));
  90     }
  91
  92     /**
  93      * Function for starting scheduling Datafile workflow.
  94      *
  95      * @return status of operation execution: true - started, false - not started
  96      */
  97     @PostConstruct
  98     @ApiOperation(value = "Start task if possible")
  99     public synchronized boolean tryToStartTask() {
 100         contextMap = MappedDiagnosticContext.initializeTraceContext();
 101         logger.info("Start scheduling Datafile workflow");
 102         configuration.initialize();
 103
 104         if (scheduledFutureList.isEmpty()) {
 105             scheduledFutureList.add(taskScheduler.scheduleWithFixedDelay(scheduledTask::executeDatafileMainTask,
 106                     SCHEDULING_DELAY_FOR_DATAFILE_COLLECTOR_TASKS));
 107             scheduledFutureList
 108                     .add(taskScheduler.scheduleWithFixedDelay(() -> scheduledTask.purgeCachedInformation(Instant.now()),
 109                             SCHEDULING_DELAY_FOR_DATAFILE_PURGE_CACHE));
 110             return true;
 111         } else {
 112             return false;
 113         }
 114     }
 115
 116     static void setScheduledFutureList(List<ScheduledFuture<?>> scheduledFutureList) {
 117         SchedulerConfig.scheduledFutureList = scheduledFutureList;
 118     }
 119 }