io.servicecomb.transport.highway.HighwayClient Maven / Gradle / Ivy

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/*
 * Copyright 2017 Huawei Technologies Co., Ltd
 *
 * 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.servicecomb.transport.highway;

import io.servicecomb.codec.protobuf.definition.OperationProtobuf;
import io.servicecomb.codec.protobuf.definition.ProtobufManager;
import io.servicecomb.core.Invocation;
import io.servicecomb.core.definition.OperationMeta;
import io.servicecomb.core.transport.AbstractTransport;
import io.servicecomb.foundation.ssl.SSLCustom;
import io.servicecomb.foundation.ssl.SSLOption;
import io.servicecomb.foundation.ssl.SSLOptionFactory;
import io.servicecomb.foundation.vertx.VertxTLSBuilder;
import io.servicecomb.foundation.vertx.VertxUtils;
import io.servicecomb.foundation.vertx.client.ClientPoolManager;
import io.servicecomb.foundation.vertx.client.tcp.TcpClientConfig;
import io.servicecomb.swagger.invocation.AsyncResponse;
import io.servicecomb.swagger.invocation.Response;
import io.vertx.core.DeploymentOptions;
import io.vertx.core.Vertx;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class HighwayClient {
    private static final Logger log = LoggerFactory.getLogger(HighwayClient.class);
    private static final String SSL_KEY = "highway.consumer";

    private ClientPoolManager clientMgr = new ClientPoolManager<>();

    private final boolean sslEnabled;

    public HighwayClient(boolean sslEnabled) {
        this.sslEnabled = sslEnabled;
    }

    public void init(Vertx vertx) throws Exception {
        TcpClientConfig config = createTcpClientConfig();

        DeploymentOptions deployOptions = VertxUtils.createClientDeployOptions(clientMgr,
                HighwayConfig.getClientThreadCount(),
                HighwayConfig.getClientConnectionPoolPerThread(),
                config);

        VertxUtils.blockDeploy(vertx, HighwayClientVerticle.class, deployOptions);
    }

    private TcpClientConfig createTcpClientConfig() {
        TcpClientConfig tcpClientConfig = new TcpClientConfig();
        tcpClientConfig.setRequestTimeoutMillis(AbstractTransport.getRequestTimeout());

        if (this.sslEnabled) {
            SSLOptionFactory factory =
                SSLOptionFactory.createSSLOptionFactory(SSL_KEY, null);
            SSLOption sslOption;
            if (factory == null) {
                sslOption = SSLOption.buildFromYaml(SSL_KEY);
            } else {
                sslOption = factory.createSSLOption();
            }
            SSLCustom sslCustom = SSLCustom.createSSLCustom(sslOption.getSslCustomClass());
            VertxTLSBuilder.buildClientOptionsBase(sslOption, sslCustom, tcpClientConfig);
        }
        return tcpClientConfig;
    }

    public void send(Invocation invocation, AsyncResponse asyncResp) throws Exception {
        HighwayClientConnectionPool tcpClientPool = clientMgr.findThreadBindClientPool();

        OperationMeta operationMeta = invocation.getOperationMeta();
        OperationProtobuf operationProtobuf = ProtobufManager.getOrCreateOperation(operationMeta);

        HighwayClientConnection tcpClient = tcpClientPool.findOrCreateClient(invocation.getEndpoint().getEndpoint());
        HighwayClientPackage clientPackage = new HighwayClientPackage(invocation, operationProtobuf, tcpClient);
        log.debug("Calling method {} of {} by highway", operationMeta.getMethod(), invocation.getMicroserviceName());
        tcpClientPool.send(tcpClient, clientPackage, ar -> {
            // 此时是在网络线程中，转换线程
            invocation.getResponseExecutor().execute(() -> {
                if (ar.failed()) {
                    // 只会是本地异常
                    asyncResp.consumerFail(ar.cause());
                    return;
                }

                // 处理应答
                try {
                    Response response =
                        HighwayCodec.decodeResponse(invocation,
                                operationProtobuf,
                                ar.result(),
                                tcpClient.getProtobufFeature());
                    asyncResp.complete(response);
                } catch (Throwable e) {
                    asyncResp.consumerFail(e);
                }
            });
        });
    }
}