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Example 1 with RequestHandler

use of com.alibaba.nacos.core.remote.RequestHandler in project nacos by alibaba.

the class GrpcRequestAcceptor method request.

@Override
public void request(Payload grpcRequest, StreamObserver<Payload> responseObserver) {
    traceIfNecessary(grpcRequest, true);
    String type = grpcRequest.getMetadata().getType();
    // server is on starting.
    if (!ApplicationUtils.isStarted()) {
        Payload payloadResponse = GrpcUtils.convert(ErrorResponse.build(NacosException.INVALID_SERVER_STATUS, "Server is starting,please try later."));
        traceIfNecessary(payloadResponse, false);
        responseObserver.onNext(payloadResponse);
        responseObserver.onCompleted();
        return;
    }
    // server check.
    if (ServerCheckRequest.class.getSimpleName().equals(type)) {
        Payload serverCheckResponseP = GrpcUtils.convert(new ServerCheckResponse(CONTEXT_KEY_CONN_ID.get()));
        traceIfNecessary(serverCheckResponseP, false);
        responseObserver.onNext(serverCheckResponseP);
        responseObserver.onCompleted();
        return;
    }
    RequestHandler requestHandler = requestHandlerRegistry.getByRequestType(type);
    // no handler found.
    if (requestHandler == null) {
        Loggers.REMOTE_DIGEST.warn(String.format("[%s] No handler for request type : %s :", "grpc", type));
        Payload payloadResponse = GrpcUtils.convert(ErrorResponse.build(NacosException.NO_HANDLER, "RequestHandler Not Found"));
        traceIfNecessary(payloadResponse, false);
        responseObserver.onNext(payloadResponse);
        responseObserver.onCompleted();
        return;
    }
    // check connection status.
    String connectionId = CONTEXT_KEY_CONN_ID.get();
    boolean requestValid = connectionManager.checkValid(connectionId);
    if (!requestValid) {
        Loggers.REMOTE_DIGEST.warn("[{}] Invalid connection Id ,connection [{}] is un registered ,", "grpc", connectionId);
        Payload payloadResponse = GrpcUtils.convert(ErrorResponse.build(NacosException.UN_REGISTER, "Connection is unregistered."));
        traceIfNecessary(payloadResponse, false);
        responseObserver.onNext(payloadResponse);
        responseObserver.onCompleted();
        return;
    }
    Object parseObj = null;
    try {
        parseObj = GrpcUtils.parse(grpcRequest);
    } catch (Exception e) {
        Loggers.REMOTE_DIGEST.warn("[{}] Invalid request receive from connection [{}] ,error={}", "grpc", connectionId, e);
        Payload payloadResponse = GrpcUtils.convert(ErrorResponse.build(NacosException.BAD_GATEWAY, e.getMessage()));
        traceIfNecessary(payloadResponse, false);
        responseObserver.onNext(payloadResponse);
        responseObserver.onCompleted();
        return;
    }
    if (parseObj == null) {
        Loggers.REMOTE_DIGEST.warn("[{}] Invalid request receive  ,parse request is null", connectionId);
        Payload payloadResponse = GrpcUtils.convert(ErrorResponse.build(NacosException.BAD_GATEWAY, "Invalid request"));
        traceIfNecessary(payloadResponse, false);
        responseObserver.onNext(payloadResponse);
        responseObserver.onCompleted();
        return;
    }
    if (!(parseObj instanceof Request)) {
        Loggers.REMOTE_DIGEST.warn("[{}] Invalid request receive  ,parsed payload is not a request,parseObj={}", connectionId, parseObj);
        Payload payloadResponse = GrpcUtils.convert(ErrorResponse.build(NacosException.BAD_GATEWAY, "Invalid request"));
        traceIfNecessary(payloadResponse, false);
        responseObserver.onNext(payloadResponse);
        responseObserver.onCompleted();
        return;
    }
    Request request = (Request) parseObj;
    try {
        Connection connection = connectionManager.getConnection(CONTEXT_KEY_CONN_ID.get());
        RequestMeta requestMeta = new RequestMeta();
        requestMeta.setClientIp(connection.getMetaInfo().getClientIp());
        requestMeta.setConnectionId(CONTEXT_KEY_CONN_ID.get());
        requestMeta.setClientVersion(connection.getMetaInfo().getVersion());
        requestMeta.setLabels(connection.getMetaInfo().getLabels());
        connectionManager.refreshActiveTime(requestMeta.getConnectionId());
        Response response = requestHandler.handleRequest(request, requestMeta);
        Payload payloadResponse = GrpcUtils.convert(response);
        traceIfNecessary(payloadResponse, false);
        responseObserver.onNext(payloadResponse);
        responseObserver.onCompleted();
    } catch (Throwable e) {
        Loggers.REMOTE_DIGEST.error("[{}] Fail to handle request from connection [{}] ,error message :{}", "grpc", connectionId, e);
        Payload payloadResponse = GrpcUtils.convert(ErrorResponse.build((e instanceof NacosException) ? ((NacosException) e).getErrCode() : ResponseCode.FAIL.getCode(), e.getMessage()));
        traceIfNecessary(payloadResponse, false);
        responseObserver.onNext(payloadResponse);
        responseObserver.onCompleted();
    }
}
Also used : ServerCheckResponse(com.alibaba.nacos.api.remote.response.ServerCheckResponse) RequestMeta(com.alibaba.nacos.api.remote.request.RequestMeta) ServerCheckRequest(com.alibaba.nacos.api.remote.request.ServerCheckRequest) Request(com.alibaba.nacos.api.remote.request.Request) Connection(com.alibaba.nacos.core.remote.Connection) NacosException(com.alibaba.nacos.api.exception.NacosException) NacosException(com.alibaba.nacos.api.exception.NacosException) Response(com.alibaba.nacos.api.remote.response.Response) ServerCheckResponse(com.alibaba.nacos.api.remote.response.ServerCheckResponse) ErrorResponse(com.alibaba.nacos.api.remote.response.ErrorResponse) ServerCheckRequest(com.alibaba.nacos.api.remote.request.ServerCheckRequest) RequestHandler(com.alibaba.nacos.core.remote.RequestHandler) Payload(com.alibaba.nacos.api.grpc.auto.Payload)

Aggregations

NacosException (com.alibaba.nacos.api.exception.NacosException)1 Payload (com.alibaba.nacos.api.grpc.auto.Payload)1 Request (com.alibaba.nacos.api.remote.request.Request)1 RequestMeta (com.alibaba.nacos.api.remote.request.RequestMeta)1 ServerCheckRequest (com.alibaba.nacos.api.remote.request.ServerCheckRequest)1 ErrorResponse (com.alibaba.nacos.api.remote.response.ErrorResponse)1 Response (com.alibaba.nacos.api.remote.response.Response)1 ServerCheckResponse (com.alibaba.nacos.api.remote.response.ServerCheckResponse)1 Connection (com.alibaba.nacos.core.remote.Connection)1 RequestHandler (com.alibaba.nacos.core.remote.RequestHandler)1