org.apache.servicecomb.foundation.vertx.VertxUtils.java Source code

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.servicecomb.foundation.vertx;

import java.io.IOException;
import java.io.InputStream;
import java.lang.management.ManagementFactory;
import java.util.Map;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.CountDownLatch;

import javax.xml.ws.Holder;

import org.apache.commons.io.IOUtils;
import org.apache.servicecomb.foundation.common.concurrent.ConcurrentHashMapEx;
import org.apache.servicecomb.foundation.vertx.client.ClientPoolManager;
import org.apache.servicecomb.foundation.vertx.client.ClientVerticle;
import org.apache.servicecomb.foundation.vertx.stream.BufferInputStream;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import io.netty.buffer.ByteBuf;
import io.vertx.core.AbstractVerticle;
import io.vertx.core.DeploymentOptions;
import io.vertx.core.Verticle;
import io.vertx.core.Vertx;
import io.vertx.core.VertxOptions;
import io.vertx.core.buffer.Buffer;
import io.vertx.core.impl.FileResolver;
import io.vertx.core.impl.VertxImplEx;
import io.vertx.core.logging.SLF4JLogDelegateFactory;

/**
 * VertxUtils
 *
 *
 */
public final class VertxUtils {
    static {
        // initialize vertx logger, this can be done multiple times
        System.setProperty("vertx.logger-delegate-factory-class-name", SLF4JLogDelegateFactory.class.getName());
        io.vertx.core.logging.LoggerFactory.initialise();
    }

    private static final Logger LOGGER = LoggerFactory.getLogger(VertxUtils.class);

    private static final long BLOCKED_THREAD_CHECK_INTERVAL = Long.MAX_VALUE / 2;

    // keyvertx??vertx
    private static Map<String, VertxImplEx> vertxMap = new ConcurrentHashMapEx<>();

    private VertxUtils() {
    }

    public static Map<String, VertxImplEx> getVertxMap() {
        return vertxMap;
    }

    public static <T extends AbstractVerticle> void deployVerticle(Vertx vertx, Class<T> cls, int instanceCount) {
        DeploymentOptions options = new DeploymentOptions().setInstances(instanceCount);

        vertx.deployVerticle(cls.getName(), options);
    }

    public static <CLIENT_POOL> DeploymentOptions createClientDeployOptions(
            ClientPoolManager<CLIENT_POOL> clientMgr, int instanceCount) {
        DeploymentOptions options = new DeploymentOptions().setInstances(instanceCount);
        SimpleJsonObject config = new SimpleJsonObject();
        config.put(ClientVerticle.CLIENT_MGR, clientMgr);
        options.setConfig(config);

        return options;
    }

    // deploy Verticle and wait for its success. do not call this method in event-loop thread
    public static <VERTICLE extends Verticle> boolean blockDeploy(Vertx vertx, Class<VERTICLE> cls,
            DeploymentOptions options) throws InterruptedException {
        Holder<Boolean> result = new Holder<>();

        CountDownLatch latch = new CountDownLatch(1);
        vertx.deployVerticle(cls.getName(), options, ar -> {
            result.value = ar.succeeded();

            if (ar.failed()) {
                LOGGER.error("deploy vertx failed, cause ", ar.cause());
            }

            latch.countDown();
        });

        latch.await();

        return result.value;
    }

    public static Vertx getOrCreateVertxByName(String name, VertxOptions vertxOptions) {
        return vertxMap.computeIfAbsent(name, vertxName -> (VertxImplEx) init(vertxName, vertxOptions));
    }

    public static Vertx init(VertxOptions vertxOptions) {
        return init(null, vertxOptions);
    }

    public static Vertx init(String name, VertxOptions vertxOptions) {
        if (vertxOptions == null) {
            vertxOptions = new VertxOptions();
        }

        boolean isDebug = ManagementFactory.getRuntimeMXBean().getInputArguments().toString().contains("jdwp");
        if (isDebug) {
            vertxOptions.setBlockedThreadCheckInterval(BLOCKED_THREAD_CHECK_INTERVAL);
            LOGGER.info("in debug mode, disable blocked thread check.");
        }

        configureVertxFileCaching();
        return new VertxImplEx(name, vertxOptions);
    }

    /**
     * ?vertx
     */
    protected static void configureVertxFileCaching() {
        if (System.getProperty(FileResolver.DISABLE_CP_RESOLVING_PROP_NAME) == null) {
            System.setProperty(FileResolver.DISABLE_CP_RESOLVING_PROP_NAME, "true");
        }
    }

    // try to reference byte[]
    // otherwise copy byte[]
    public static byte[] getBytesFast(InputStream inputStream) throws IOException {
        if (BufferInputStream.class.isInstance(inputStream)) {
            return getBytesFast(((BufferInputStream) inputStream).getByteBuf());
        }

        return IOUtils.toByteArray(inputStream);
    }

    public static byte[] getBytesFast(Buffer buffer) {
        ByteBuf byteBuf = buffer.getByteBuf();
        return getBytesFast(byteBuf);
    }

    public static byte[] getBytesFast(ByteBuf byteBuf) {
        if (byteBuf.hasArray()) {
            return byteBuf.array();
        }

        byte[] arr = new byte[byteBuf.writerIndex()];
        byteBuf.getBytes(0, arr);
        return arr;
    }

    public static CompletableFuture<Void> closeVertxByName(String name) {
        LOGGER.info("Closing vertx {}.", name);
        CompletableFuture<Void> future = new CompletableFuture<>();
        Vertx vertx = vertxMap.remove(name);
        if (vertx == null) {
            LOGGER.info("Vertx {} not exist.", name);
            future.complete(null);
            return future;
        }

        vertx.close(ar -> {
            if (ar.succeeded()) {
                LOGGER.info("Success to close vertx {}.", name);
                future.complete(null);
                return;
            }

            future.completeExceptionally(ar.cause());
        });
        return future;
    }

    public static void blockCloseVertxByName(String name) {
        CompletableFuture<Void> future = closeVertxByName(name);
        try {
            future.get();
        } catch (Throwable e) {
            LOGGER.error("Failed to close vertx {}.", name, e);
        }
    }
}