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/*
* ============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.tasks;
import io.swagger.annotations.ApiOperation;
import java.time.Duration;
import java.time.Instant;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ScheduledFuture;
import javax.annotation.PostConstruct;
import org.onap.dcaegen2.services.prh.configuration.CloudConfiguration;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.slf4j.Marker;
import org.slf4j.MarkerFactory;
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 <a href="mailto:przemyslaw.wasala@nokia.com">Przemysław Wąsala</a> on 6/13/18
*/
@Configuration
@EnableScheduling
public class ScheduledTasksRunner {
private static final int SCHEDULING_DELAY_FOR_PRH_TASKS = 10;
private static final int SCHEDULING_REQUEST_FOR_CONFIGURATION_DELAY = 5;
private static final Logger LOGGER = LoggerFactory.getLogger(ScheduledTasksRunner.class);
private static final Marker ENTRY = MarkerFactory.getMarker("ENTRY");
private static volatile List<ScheduledFuture> scheduledPrhTaskFutureList = new ArrayList<>();
private final TaskScheduler taskScheduler;
private final ScheduledTasks scheduledTask;
private final CloudConfiguration cloudConfiguration;
@Autowired
public ScheduledTasksRunner(TaskScheduler taskScheduler,
ScheduledTasks scheduledTask,
CloudConfiguration cloudConfiguration) {
this.taskScheduler = taskScheduler;
this.scheduledTask = scheduledTask;
this.cloudConfiguration = cloudConfiguration;
}
/**
* 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<ResponseEntity<String>> getResponseFromCancellationOfTasks() {
scheduledPrhTaskFutureList.forEach(x -> x.cancel(false));
scheduledPrhTaskFutureList.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() {
LOGGER.info(ENTRY, "Start scheduling PRH workflow");
if (scheduledPrhTaskFutureList.isEmpty()) {
scheduledPrhTaskFutureList.add(taskScheduler
.scheduleAtFixedRate(cloudConfiguration::runTask, Instant.now(),
Duration.ofMinutes(SCHEDULING_REQUEST_FOR_CONFIGURATION_DELAY)));
scheduledPrhTaskFutureList.add(taskScheduler
.scheduleWithFixedDelay(scheduledTask::scheduleMainPrhEventTask,
Duration.ofSeconds(SCHEDULING_DELAY_FOR_PRH_TASKS)));
return true;
} else {
return false;
}
}
}
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