RavenclawDev: java galaxy server
Svetlana Stenchikova
sveta at cs.sunysb.edu
Tue Sep 26 18:20:41 EDT 2006
Thanks Thomas,
So I added to the .pgm file
;; -------------------------------------------------
;; Backend - Server (java_be)
;; -------------------------------------------------
SERVER: java_be at localhost:11003
OPERATIONS: Test
INIT: :greeting "RavenCalendar Java Backend!"
And also "Test" on the line TIMESTAMP:
And now I got exception on the start of java_be:
Listener received handshake frame:
{c handshake
:protocol_version 1
:conn_type 1 }
ERROR: Caught exception while creating instance of server class
"GoogleConnect": java.lang.reflect.InvocationTargetException
ERROR: Unknown error in listener while creating a new server.
Listener waiting for connection request...
java.net.SocketException: Connection closed by remote host
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.checkWrite(Unknown
Source)
at com.sun.net.ssl.internal.ssl.AppOutputStream.write(Unknown
Source)
at sun.nio.cs.StreamEncoder$CharsetSE.writeBytes(Unknown Source)
at sun.nio.cs.StreamEncoder$CharsetSE.implFlushBuffer(Unknown
Source)
at sun.nio.cs.StreamEncoder$CharsetSE.implFlush(Unknown Source)
at sun.nio.cs.StreamEncoder.flush(Unknown Source)
at java.io.OutputStreamWriter.flush(Unknown Source)
at java.io.BufferedWriter.flush(Unknown Source)
at
org.jivesoftware.smack.PacketWriter.writePackets(PacketWriter.java:242)
at
org.jivesoftware.smack.PacketWriter.access$000(PacketWriter.java:36)
at org.jivesoftware.smack.PacketWriter$1.run(PacketWriter.java:70)
java.io.EOFException: no more data available - expected end tag
</stream:stream> to close start tag <stream:stream> from line 1, parser
stop
ped on END_TAG seen ...</mechanisms></stream:features>... @1:343
at org.xmlpull.mxp1.MXParser.fillBuf(MXParser.java:3014)
at org.xmlpull.mxp1.MXParser.more(MXParser.java:3025)
at org.xmlpull.mxp1.MXParser.nextImpl(MXParser.java:1144)
at org.xmlpull.mxp1.MXParser.next(MXParser.java:1093)
at
org.jivesoftware.smack.PacketReader.parsePackets(PacketReader.java:377)
at
org.jivesoftware.smack.PacketReader.access$000(PacketReader.java:43)
at org.jivesoftware.smack.PacketReader$1.run(PacketReader.java:63)
Do you have suggestions on this?
I am starting the server separately (not using the pmonitor), it shouldn't
matter though, should it?
Thanks!
Svetlana
---------------------------------------------------------
Svetlana Stenchikova, Ph.D. Candidate
Computer Science Department, Stony Brook University
http://cs.sunysb.edu/~sveta
sveta at cs.sunysb.edu
---------------------------------------------------------
On Tue, 26 Sep 2006, Thomas K Harris wrote:
> > The ServerOpTest() should get executed, is this correct?
>
> That all sounds right to me.
>
> > Does the stderr output go somewhere
> > else from the backend server?
>
> Standard error should be reported to the console window that the process
> manager starts just like with a C app.
>
> Did you add "test" to the hub program file? If not, then that's probably it.
> Basically you'll want to put it wherever launch_query was. If you already
> took care of that, let me know and I'll take a closer look.
>
> -Thomas
>
> > -----Original Message-----
> > From: Svetlana Stenchikova [mailto:sveta at cs.sunysb.edu]
> > Sent: Tuesday, September 26, 2006 5:17 PM
> > To: Thomas K Harris
> > Cc: 'Dialog Group CMU'
> > Subject: RE: RavenclawDev: java galaxy server
> >
> >
> > Hi, I am writing a java backend server (using Jason as a sample java
> > server)
> >
> > So, as I understand, to write a java server I just need to
> > 1. extend galaxy.server.Server
> > 2. start the MainServer from main() of my program
> > 3. set the class name mainServer.setServerClassName("java_be");
> > 4. declare public GFrame serverOp<name of operation>(GFrame f) for
> > all commands that my server accepts.
> >
> >
> > Thomas, in Jason there is also a functions: requestInitSession() which
> > is called from startConversation()
> > This is necessary for Jason because it is an initiator of a message,
> > right? The backend server will be a receiver of the messages.
> >
> >
> > So, now I have a question of how to send a message from the dialog manager
> > to the backend server.
> >
> > In RoomLine it is done from an execute agent using a launch_query:
> > DEFINE_EXECUTE_AGENT( CDBGetEvents,
> > CALL("gal_be.launch_query query=get_events <event_query
> > results>eventlistresult error>backend_error")
> > )
> >
> > If my server name is java_be (specified in mainServer.setServerClassName)
> > And I have defined a method
> > public GFrame serverOpTest(GFrame f) {
> > System.err.println("Java backend was called!!!");
> > return (GFrame) null;
> > }
> >
> > Now, if I call from the Dialog manager Execute agent:
> >
> > DEFINE_EXECUTE_AGENT( CDBGetEvents,
> > CALL("java_be.Test ")
> > )
> >
> > The ServerOpTest() should get executed, is this correct?
> >
> >
> > I want to make sure that my java backend server receives a call.
> > The ServerOpTest() method prints to standard error. I got nothing in the
> > window where the server was started. Does the stderr output go somewhere
> > else from the backend server? My DM output has:
> >
> > [COR at 16:51:16.934] Executing dialog agent /RavenCalendar/TestCallBackend
> > ...
> > [TMS at 16:51:16.935] Preparing external server call...
> > [TMS at 16:51:16.935] Calling galaxy server java_be.Test.
> > [TMD at 16:51:16.936] Calling galaxy server java_be.Test. Call frame dumped
> > below.
> > {
> > query test_query
> > }
> >
> > [TMS at 16:51:16.939] Galaxy server call complete.
> > [TMD at 16:51:16.939] Galaxy server call results dumped below.
> >
> > [ERR at 16:51:16.939] Cannot parse result from java_be.Test. Does not start
> > with {
> > <file c:\documents and settings\sveta\my
> > documents\work\calendar\ravencalendar\l
> > ibraries\ravenclaw\dmcore\agents\coreagents\trafficmanageragent.cpp, line
> > 171>.
> >
> >
> >
> > Since I got no output in the java_be server window, I am not sure if my
> > server was actually accessed.
> >
> > Could you please make any suggestions on how to proceed?
> >
> >
> > Thank you
> >
> > **************************************************
> > my main() is:
> >
> > public static void main(String[] args) throws
> > java.io.FileNotFoundException, java.io.IOException, java.lang.Exception {
> > MainServer mainServer = new MainServer("java_be", args);
> > mainServer.setServerClassName("GoogleConnect");
> > try {
> > mainServer.start();
> > } catch(Exception e) {
> > System.err.println(e.toString());
> > }
> > }
> >
> > ---------------------------------------------------------
> > Svetlana Stenchikova, Ph.D. Candidate
> > Computer Science Department, Stony Brook University
> > http://cs.sunysb.edu/~sveta
> > sveta at cs.sunysb.edu
> > ---------------------------------------------------------
> >
>
>
>
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