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/*
* ============LICENSE_START=======================================================
* Copyright (C) 2022 Nordix Foundation
* ================================================================================
* 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.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.onap.cps.ncmp.api.inventory.sync.executor;
import static java.util.concurrent.TimeUnit.MILLISECONDS;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeoutException;
import java.util.function.Supplier;
import javax.annotation.PostConstruct;
import lombok.Getter;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
@Slf4j
@Service
public class AsyncTaskExecutor {
@Value("${ncmp.modules-sync-watchdog.async-executor.parallelism-level:10}")
@Getter
private int asyncTaskParallelismLevel;
private ExecutorService executorService;
private static final int DEFAULT_PARALLELISM_LEVEL = 10;
/**
* Set up executor service with thread-pool size as per configuration parameter.
* If modules-sync-watchdog.async-executor.parallelism-level not set a default of 10 threads will be applied.
*/
@PostConstruct
public void setupThreadPool() {
executorService = Executors.newWorkStealingPool(
asyncTaskParallelismLevel == 0 ? DEFAULT_PARALLELISM_LEVEL : asyncTaskParallelismLevel);
}
/**
* Execute supplied task asynchronously.
*
* @param taskSupplier functional method is get() task need to executed asynchronously
* @param timeOutInMillis the task timeout value in milliseconds
*/
public void executeTask(final Supplier<Object> taskSupplier, final long timeOutInMillis) {
CompletableFuture.supplyAsync(taskSupplier::get, executorService)
.orTimeout(timeOutInMillis, MILLISECONDS)
.whenCompleteAsync(this::handleTaskCompletion);
}
private void handleTaskCompletion(final Object response, final Throwable throwable) {
if (throwable != null) {
if (throwable instanceof TimeoutException) {
log.warn("Async task didn't completed within the required time.");
} else {
log.debug("Watchdog async batch failed. caused by : {}", throwable.getMessage());
}
}
}
}
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