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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.messagebus.network.rpc.test;
import com.yahoo.jrt.*;
import com.yahoo.jrt.slobrok.api.SlobrokList;
import com.yahoo.jrt.slobrok.api.Register;
import com.yahoo.jrt.slobrok.server.Slobrok;
import java.util.ArrayList;
import java.util.List;
/**
* @author <a href="mailto:simon@yahoo-inc.com">Simon Thoresen</a>
*/
public class OOSServer {
private int getCnt = 1;
private List<String> state = new ArrayList<String>();
private Supervisor orb;
private Register register;
private Acceptor listener;
public OOSServer(Slobrok slobrok, String service, OOSState state) {
orb = new Supervisor(new Transport());
orb.addMethod(new Method("fleet.getOOSList", "ii", "Si",
new MethodHandler() {
public void invoke(Request request) {
rpc_poll(request);
}
})
.methodDesc("Fetch OOS information.")
.paramDesc(0, "gencnt", "Generation already known by client.")
.paramDesc(1, "timeout", "How many milliseconds to wait for changes before returning if nothing has changed (max=10000).")
.returnDesc(0, "names", "List of services that are OOS (empty if generation has not changed).")
.returnDesc(1, "newgen", "Generation of the returned list."));
try {
listener = orb.listen(new Spec(0));
}
catch (ListenFailedException e) {
orb.transport().shutdown().join();
throw new RuntimeException(e);
}
SlobrokList slist = new SlobrokList();
slist.setup(new String[] { new Spec("localhost", slobrok.port()).toString() });
register = new Register(orb, slist, "localhost", listener.port());
register.registerName(service);
setState(state);
}
public void shutdown() {
register.shutdown();
listener.shutdown().join();
orb.transport().shutdown().join();
}
public void setState(OOSState state) {
List<String> newState = new ArrayList<String>();
for (String service : state.getServices()) {
if (state.isOOS(service)) {
newState.add(service);
}
}
synchronized(this) {
this.state = newState;
if (++getCnt == 0) {
getCnt = 1;
}
}
}
private void rpc_poll(Request request) {
synchronized(this) {
request.returnValues()
.add(new StringArray(state.toArray(new String[state.size()])))
.add(new Int32Value(getCnt));
}
}
public int getPort() {
return listener.port();
}
}
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