testdbus.vala

#!/usr/bin/env vala

[DBus (name = "org.testdbus.Server")]
interface TestDBus.Client : GLib.Object {
    public signal void finalized();
    public abstract string say(string sentence) throws Error;
    public abstract void quit() throws Error;
}

[DBus (name = "org.testdbus.Server")]
class TestDBus.Server : GLib.Object {
    static GLib.MainLoop mainloop = null;
    static const string name = "org.testdbus.Server";
    static const string path = "/org/testdbus/server";
    static TestDBus.Server instance = null;
    static GLib.DBusConnection con = null;
    static uint nameid = 0;
    static uint objectid = 0;
    public signal void finalized();

    private static void name_acquired_cb(GLib.DBusConnection con, string name) {
        TestDBus.Server.con = con;
        TestDBus.Server.instance = new TestDBus.Server();
        TestDBus.Server.objectid = con.register_object(TestDBus.Server.path,
                                                       TestDBus.Server.instance);
    }

    private static void acquire_name() {
        TestDBus.Server.nameid = GLib.Bus.own_name(GLib.BusType.SESSION,
                                                   TestDBus.Server.name,
                                                   GLib.BusNameOwnerFlags.NONE,
                                                   TestDBus.Server.name_acquired_cb,
                                                   null,
                                                   null);
    }

    public static void init(GLib.MainLoop mainloop) {
        if(TestDBus.Server.instance == null) {
            TestDBus.Server.mainloop = mainloop;
            TestDBus.Server.acquire_name();
        }
    }

    public static  TestDBus.Client get_new_client() {
        TestDBus.Client client = GLib.Bus.get_proxy_sync(GLib.BusType.SESSION,
                                                         TestDBus.Server.name,
                                                         TestDBus.Server.path);
        return client;
    }

    public static void startserver() {
        GLib.MainLoop mainloop = new GLib.MainLoop();
        TestDBus.Server.init(mainloop);
        mainloop.run();
    }

    public static void startclient() {
        GLib.MainLoop mainloop = new GLib.MainLoop();
        TestDBus.Client client = TestDBus.Server.get_new_client();
        client.finalized.connect(() => {mainloop.quit();});
        print(client.say("helloworld") + "\n");
        client.quit();
        mainloop.run();
    }

    public static int main(string[] args) {
        if(args[1] == "server") {
            startserver();
        }
        if(args[1] == "client") {
            startclient();
        }
        return 0;
    }

    public void quit() {
        this.finalized();
        TestDBus.Server.con.unregister_object(TestDBus.Server.objectid);
        GLib.Bus.unown_name(TestDBus.Server.nameid);
        TestDBus.Server.instance = null;
        TestDBus.Server.mainloop.quit();
    }

    public string say(string sentence) {
        return sentence;
    }
}