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JNodeServer.java
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JNodeServer.java
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import com.ericsson.otp.erlang.*;
public class JNodeServer {
private OtpNode node;
private OtpMbox mbox;
public JNodeServer() throws Exception {
node = new OtpNode("j1", "secret");
mbox = node.createMbox("java");
OtpErlangPid pid = mbox.self();
System.out.println("Started node: " + pid.toString());
}
public void process() {
while (true) {
try {
OtpErlangTuple msg = (OtpErlangTuple) mbox.receive();
OtpErlangPid from = (OtpErlangPid) msg.elementAt(1);
OtpErlangTuple tuple = (OtpErlangTuple) msg.elementAt(2);
String fn = ((OtpErlangAtom) tuple.elementAt(0)).atomValue();
int arg = (int) ((OtpErlangLong) tuple.elementAt(1)).longValue();
System.out.println("message: {" + from.toString() + ", {" + fn + ", " + arg + "}}");
JComplexCalculation complexCalc = new JComplexCalculation();
Integer result = null;
switch (fn) {
case "foo":
result = complexCalc.foo(arg);
break;
case "bar":
result = complexCalc.bar(arg);
break;
default:
}
OtpErlangTuple reply = null;
if (result == null) {
reply = new OtpErlangTuple(new OtpErlangObject[] { mbox.self(), new OtpErlangString("error") });
} else {
reply = new OtpErlangTuple(new OtpErlangObject[] { mbox.self(), new OtpErlangInt(result) });
}
mbox.send(from, reply);
} catch (OtpErlangExit | OtpErlangDecodeException e) {
e.printStackTrace();
}
}
}
public static void main(String[] args) throws Exception {
JNodeServer server = new JNodeServer();
server.process();
}
}