io.servicecomb.transport.highway.HighwayServerInvoke 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 java.util.Map;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import io.protostuff.runtime.ProtobufFeature;
import io.servicecomb.codec.protobuf.definition.OperationProtobuf;
import io.servicecomb.codec.protobuf.definition.ProtobufManager;
import io.servicecomb.codec.protobuf.utils.WrapSchema;
import io.servicecomb.core.CseContext;
import io.servicecomb.core.Invocation;
import io.servicecomb.core.definition.MicroserviceMeta;
import io.servicecomb.core.definition.MicroserviceMetaManager;
import io.servicecomb.core.definition.OperationMeta;
import io.servicecomb.core.definition.SchemaMeta;
import io.servicecomb.foundation.vertx.tcp.TcpConnection;
import io.servicecomb.swagger.invocation.Response;
import io.servicecomb.swagger.invocation.exception.InvocationException;
import io.servicecomb.transport.highway.message.RequestHeader;
import io.servicecomb.transport.highway.message.ResponseHeader;
import io.vertx.core.buffer.Buffer;

public class HighwayServerInvoke {
    private static final Logger LOGGER = LoggerFactory.getLogger(HighwayServerInvoke.class);

    private MicroserviceMetaManager microserviceMetaManager = CseContext.getInstance().getMicroserviceMetaManager();

    private ProtobufFeature protobufFeature;

    private RequestHeader header;

    private OperationMeta operationMeta;

    private OperationProtobuf operationProtobuf;

    private TcpConnection connection;

    private long msgId;

    private Buffer bodyBuffer;

    public HighwayServerInvoke() {
        this(null);
    }

    public HighwayServerInvoke(ProtobufFeature protobufFeature) {
        this.protobufFeature = protobufFeature;
    }

    public void setMicroserviceMetaManager(MicroserviceMetaManager microserviceMetaManager) {
        this.microserviceMetaManager = microserviceMetaManager;
    }

    public boolean init(TcpConnection connection, long msgId,
            RequestHeader header, Buffer bodyBuffer) {
        try {
            doInit(connection, msgId, header, bodyBuffer);
            return true;
        } catch (Throwable e) {
            String microserviceQualifidName = "unknown";
            if (operationMeta != null) {
                microserviceQualifidName = operationMeta.getMicroserviceQualifiedName();
            }
            String msg = String.format("decode request error, microserviceQualifidName=%s, msgId=%d",
                    microserviceQualifidName,
                    msgId);
            LOGGER.error(msg, e);

            return false;
        }
    }

    private void doInit(TcpConnection connection, long msgId, RequestHeader header,
            Buffer bodyBuffer) throws Exception {
        this.connection = connection;
        this.msgId = msgId;
        this.header = header;

        MicroserviceMeta microserviceMeta = microserviceMetaManager.ensureFindValue(header.getDestMicroservice());
        SchemaMeta schemaMeta = microserviceMeta.ensureFindSchemaMeta(header.getSchemaId());
        this.operationMeta = schemaMeta.ensureFindOperation(header.getOperationName());
        this.operationProtobuf = ProtobufManager.getOrCreateOperation(operationMeta);

        this.bodyBuffer = bodyBuffer;
    }

    private void runInExecutor() {
        try {
            doRunInExecutor();
        } catch (Throwable e) {
            String msg = String.format("handle request error, %s, msgId=%d",
                    operationMeta.getMicroserviceQualifiedName(),
                    msgId);
            LOGGER.error(msg, e);

            sendResponse(header.getContext(), Response.providerFailResp(e));
        }
    }

    private void doRunInExecutor() throws Exception {
        Invocation invocation = HighwayCodec.decodeRequest(header, operationProtobuf, bodyBuffer, protobufFeature);

        invocation.next(response -> {
            sendResponse(invocation.getContext(), response);
        });
    }

    private void sendResponse(Map context, Response response) {
        ResponseHeader header = new ResponseHeader();
        header.setStatusCode(response.getStatusCode());
        header.setReasonPhrase(response.getReasonPhrase());
        header.setContext(context);
        header.setHeaders(response.getHeaders());

        WrapSchema bodySchema = operationProtobuf.findResponseSchema(response.getStatusCode());
        Object body = response.getResult();
        if (response.isFailed()) {
            body = ((InvocationException) body).getErrorData();
        }

        try {
            Buffer respBuffer = HighwayCodec.encodeResponse(msgId, header, bodySchema, body, protobufFeature);
            connection.write(respBuffer.getByteBuf());
        } catch (Exception e) {
            // 没招了，直接打日志
            String msg = String.format("encode response failed, %s, msgId=%d",
                    operationProtobuf.getOperationMeta().getMicroserviceQualifiedName(),
                    msgId);
            LOGGER.error(msg, e);
        }
    }

    public void execute() {
        operationMeta.getExecutor().execute(this::runInExecutor);
    }
}