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.HashMap;
  23 import java.util.List;
  24 import java.util.Map;
  25 import java.util.concurrent.ScheduledFuture;
  26
  27 import javax.annotation.PostConstruct;
  28
  29 import org.onap.dcaegen2.collectors.datafile.model.logging.MappedDiagnosticContext;
  30 import org.onap.dcaegen2.collectors.datafile.tasks.ScheduledTasks;
  31 import org.slf4j.Logger;
  32 import org.slf4j.LoggerFactory;
  33 import org.slf4j.MDC;
  34 import org.springframework.beans.factory.annotation.Autowired;
  35 import org.springframework.context.annotation.Configuration;
  36 import org.springframework.http.HttpStatus;
  37 import org.springframework.http.ResponseEntity;
  38 import org.springframework.scheduling.TaskScheduler;
  39 import org.springframework.scheduling.annotation.EnableScheduling;
  40
  41 import io.swagger.annotations.ApiOperation;
  42 import reactor.core.publisher.Mono;
  43
  44 /**
  45  * Api for starting and stopping DFC.
  46  *
  47  * @author <a href="mailto:przemyslaw.wasala@nokia.com">Przemysław Wąsala</a> on 6/13/18
  48  * @author <a href="mailto:henrik.b.andersson@est.tech">Henrik Andersson</a>
  49  */
  50 @Configuration
  51 @EnableScheduling
  52 public class SchedulerConfig {
  53
  54     private static final Duration SCHEDULING_DELAY_FOR_DATAFILE_COLLECTOR_TASKS = Duration.ofSeconds(15);
  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 = new HashMap<>();
  59
  60     private final TaskScheduler taskScheduler;
  61     private final ScheduledTasks scheduledTask;
  62     private final AppConfig configuration;
  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 configuration The DFC configuration.
  70      */
  71     @Autowired
  72     public SchedulerConfig(TaskScheduler taskScheduler, ScheduledTasks scheduledTasks,
  73             AppConfig configuration) {
  74         this.taskScheduler = taskScheduler;
  75         this.scheduledTask = scheduledTasks;
  76         this.configuration = configuration;
  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         configuration.stop();
  89         MDC.setContextMap(contextMap);
  90         logger.info("Stopped Datafile workflow");
  91         MDC.clear();
  92         return Mono.just(new ResponseEntity<>("Datafile Service has already been stopped!", HttpStatus.CREATED));
  93     }
  94
  95     /**
  96      * Function for starting scheduling Datafile workflow.
  97      *
  98      * @return status of operation execution: true - started, false - not started
  99      */
 100     @PostConstruct
 101     @ApiOperation(value = "Start task if possible")
 102     public synchronized boolean tryToStartTask() {
 103         contextMap = MappedDiagnosticContext.initializeTraceContext();
 104         logger.info("Start scheduling Datafile workflow");
 105         configuration.initialize();
 106
 107         if (scheduledFutureList.isEmpty()) {
 108             scheduledFutureList.add(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             return true;
 114         } else {
 115             return false;
 116         }
 117     }
 118
 119     static void setScheduledFutureList(List<ScheduledFuture<?>> scheduledFutureList) {
 120         SchedulerConfig.scheduledFutureList = scheduledFutureList;
 121     }
 122 }