/*
* ============LICENSE_START=======================================================
* PNF-REGISTRATION-HANDLER
* ================================================================================
* Copyright (C) 2018 NOKIA Intellectual Property. All rights reserved.
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ============LICENSE_END=========================================================
*/
package org.onap.dcaegen2.services.prh.configuration;
import io.swagger.annotations.ApiOperation;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ScheduledFuture;
import javax.annotation.PostConstruct;
import org.onap.dcaegen2.services.prh.tasks.ScheduledTasks;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.scheduling.TaskScheduler;
import org.springframework.scheduling.annotation.EnableScheduling;
import reactor.core.publisher.Mono;
/**
* @author Przemysław Wąsala on 6/13/18
*/
@Configuration
@EnableScheduling
public class SchedulerConfig extends PrhAppConfig {
private static final int SCHEDULING_DELAY = 2000;
private static volatile List scheduledFutureList = new ArrayList<>();
private final TaskScheduler taskScheduler;
private final ScheduledTasks scheduledTask;
@Autowired
public SchedulerConfig(TaskScheduler taskScheduler, ScheduledTasks scheduledTask) {
this.taskScheduler = taskScheduler;
this.scheduledTask = scheduledTask;
}
/**
* Function which have to stop tasks execution.
*
* @return response entity about status of cancellation operation
*/
@ApiOperation(value = "Get response on stopping task execution")
public synchronized Mono> getResponseFromCancellationOfTasks() {
scheduledFutureList.forEach(x -> x.cancel(false));
scheduledFutureList.clear();
return Mono.defer(() ->
Mono.just(new ResponseEntity<>("PRH Service has already been stopped!", HttpStatus.CREATED))
);
}
/**
* Function for starting scheduling PRH workflow.
*
* @return status of operation execution: true - started, false - not started
*/
@PostConstruct
@ApiOperation(value = "Start task if possible")
public synchronized boolean tryToStartTask() {
if (scheduledFutureList.isEmpty()) {
scheduledFutureList.add(taskScheduler
.scheduleWithFixedDelay(scheduledTask::scheduleMainPrhEventTask, SCHEDULING_DELAY));
return true;
} else {
return false;
}
}
}