/*
 * Copyright (c) 2020 Oracle and/or its affiliates.
 *
 * 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.
 */

package io.helidon.webserver.jersey;

import java.util.concurrent.ExecutorService;
import java.util.function.Supplier;

import io.helidon.common.configurable.ThreadPoolSupplier;
import io.helidon.config.Config;

import org.glassfish.jersey.server.ManagedAsyncExecutor;
import org.glassfish.jersey.spi.ExecutorServiceProvider;

@ManagedAsyncExecutor
class AsyncExecutorProvider implements ExecutorServiceProvider {
    private final Supplier<ExecutorService> executorServiceSupplier;

    AsyncExecutorProvider(Supplier<ExecutorService> supplier) {
        this.executorServiceSupplier = supplier;
    }

    static ExecutorServiceProvider create(Config config) {
        return new AsyncExecutorProvider(ThreadPoolSupplier.builder()
                                                 .corePoolSize(1)
                                                 .maxPoolSize(10)
                                                 .prestart(false)
                                                 .threadNamePrefix("helidon-jersey-async")
                                                 .config(config.get("async-executor-service"))
                                                 .build());
    }

    static ExecutorServiceProvider create(ExecutorService executor) {
        return new AsyncExecutorProvider(() -> executor);
    }

    @Override
    public ExecutorService getExecutorService() {
        return executorServiceSupplier.get();
    }

    @Override
    public void dispose(ExecutorService executorService) {

    }
}
