Apache Thrift Java-Javascript communication

Question

I'm writing a Java server based on Apache Thrift, that will receive data from a Javascript client. I have completed the Java server, but the problem is that I can get a working example for the Javascript client (I was unable to find a good example for it). the examples in the build documentation aren't very helpful. My current Javascript client is below:

function testServer() {
    try {
        var transport = new Thrift.Transport("http://127.0.0.1:9090");
        var protocol  = new Thrift.Protocol(transport);
        var client = new JavaEventClient(protocol);

        var alive = client.isServerAlive();
    } catch(e) {
    }
}

testServer();

But the code isn't working - as the Java server throws an "Out Of Memory" Error. I don't know if the error is due to my client code or Apache Thrift.

What am I doing wrong?

Thrift in Java will maliciously throw an OOM on bogus input, it seems that JS client sends something wrong there. I suppose your protocol definition on the server-side has isServerAlive() method? — favoretti
– favoretti, Commented Aug 5, 2012 at 22:02
Yes, there is a declaration for isServerAlive() in the Java server implementation. — John
– John, Commented Aug 5, 2012 at 22:04
It seems that JS Thrift library is limited to JSON protocol only, is your server implemented using JSONProtocol? — favoretti
– favoretti, Commented Aug 5, 2012 at 22:07

iMysak · Accepted Answer · 2013-03-20 11:28:42Z

0

Looks like problem problem in communications. Maybe you use different protocol or transport on server and client. or bug in implementations of that protocols. // as example I found bug with utf8 characters in thrift-javascript serialization.

Please looks on https://github.com/imysak/using-thrift (My friend and I wrote this simple example of communication Java-Node.js via thrift).

I hope you can use something from our JS implementation.

answered Mar 20, 2013 at 11:28

iMysak

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Jack Miller · Accepted Answer · 2015-06-25 13:23:24Z

0

The Out Of Memory error occurs when your server is using TBinaryProtocol but you try to access it in another way, e.g. using a browser (which speaks HTTP). IMO that is a bug. There should be some nice error message instead.

The files how to make a Thrift Java server work with an Thrift Javascript client are scattered throughout the source. I puzzled them together here: https://github.com/LukeOwncloud/ThriftJavaJavascriptDemo

answered Jun 25, 2015 at 13:23

Jack Miller

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