在节点js中为grpc函数设置超时 [英] Setting timeouts for grpc functions in node js

问题描述

在服务器grpc实现未指定回调函数的情况下尝试为grpc连接创建超时，但是无论选择(new Date().getSeconds()+ 5 )客户端不会终止连接

Trying to create a timeout for grpc connection in the event that the server grpc implementation doesn't specify a callback function, however it seems that no matter what is specified in the options (new Date().getSeconds()+5) the client doesn't terminate the connection

    function hello (call, callback) {
        console.log(call.request.message)
    }
    server.addService(client.Hello.service, {hello: hello});
    server.bind('localhost:50051', grpc.ServerCredentials.createInsecure());
    server.start();
    grpcClient = new client.Hello('localhost:50051',
        grpc.credentials.createInsecure(),{deadline: new Date().getSeconds()+5}); //


    grpcClient.hello({message: "abc"}, function(err, response) {
        console.log(response) // doesn't reach here because function hello doesn't callback
    })

推荐答案

您还可以将rpc截止日期设置为:

You can also set rpc deadline as:

function getRPCDeadline(rpcType) {

    timeAllowed = 5000
    switch(rpcType) {

        case 1:
            timeAllowed = 5000  // LIGHT RPC
            break

        case 2 :
            timeAllowed = 7000  // HEAVY RPC
            break

        default :
            console.log("Invalid RPC Type: Using Default Timeout")

    }

    return new Date( Date.now() + timeAllowed )

}

然后在调用任何rpc时使用此函数:

And then use this function while calling any rpc:

var deadline = getRPCDeadline(1)

grpcClient.hello({message: "abc"},{deadline: deadline}, function(err, response) {
    console.log(err)
    console.log(response)
});

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