| /* |
| |
| Copyright 2005 (C) John Wilson. All Rights Reserved. |
| |
| Redistribution and use of this software and associated documentation |
| ("Software"), with or without modification, are permitted provided |
| that the following conditions are met: |
| |
| 1. Redistributions of source code must retain copyright |
| statements and notices. Redistributions must also contain a |
| copy of this document. |
| |
| 2. Redistributions in binary form must reproduce the |
| above copyright notice, this list of conditions and the |
| following disclaimer in the documentation and/or other |
| materials provided with the distribution. |
| |
| 3. The name "groovy" must not be used to endorse or promote |
| products derived from this Software without prior written |
| permission of The Codehaus. For written permission, |
| please contact info@codehaus.org. |
| |
| 4. Products derived from this Software may not be called "groovy" |
| nor may "groovy" appear in their names without prior written |
| permission of The Codehaus. "groovy" is a registered |
| trademark of The Codehaus. |
| |
| 5. Due credit should be given to The Codehaus - |
| http://groovy.codehaus.org/ |
| |
| THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS |
| ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT |
| NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL |
| THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, |
| INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| */ |
| |
| package groovy.net.xmlrpc; |
| |
| import groovy.lang.Closure; |
| |
| import java.io.IOException; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import org.jivesoftware.smack.PacketCollector; |
| import org.jivesoftware.smack.Roster; |
| import org.jivesoftware.smack.XMPPConnection; |
| import org.jivesoftware.smack.filter.PacketFilter; |
| import org.jivesoftware.smack.packet.IQ; |
| import org.jivesoftware.smack.packet.Packet; |
| import org.jivesoftware.smack.packet.Presence; |
| |
| import uk.co.wilson.net.xmlrpc.XMLRPCFailException; |
| import uk.co.wilson.smackx.packet.JabberRPC; |
| |
| /** |
| * @author John Wilson |
| * |
| */ |
| |
| public class JabberRPCServerProxy extends RPCServerProxy { |
| public JabberRPCServerProxy(final XMPPConnection connection, final String to) { |
| this.connection = connection; |
| this.to = to; |
| |
| this.connection.sendPacket(new Presence(Presence.Type.AVAILABLE, "Jabber.RPC Client", 1, Presence.Mode.AVAILABLE)); |
| } |
| |
| /* (non-Javadoc) |
| * @see groovy.lang.GroovyObject#invokeMethod(java.lang.String, java.lang.Object) |
| */ |
| public Object invokeMethod(final String name, final Object args) { |
| if ("invokeMethod".equals(name)) return super.invokeMethod(name, args); |
| |
| final Object[] params = (args instanceof List) ? ((List)args).toArray() : (Object[])args; |
| int numberOfparams = params.length; |
| |
| if (numberOfparams != 0 && params[numberOfparams - 1] instanceof Closure) { |
| numberOfparams--; // the closure is not to be passed to the remote method |
| } |
| |
| try { |
| final JabberRPC request = new JabberRPC(XMLRPCMessageProcessor.emitCall(new StringBuffer(), name, params, numberOfparams).toString()); |
| final PacketCollector responseCollector = this.connection.createPacketCollector(new PacketFilter() { |
| public boolean accept(final Packet packet) { |
| return packet instanceof JabberRPC && |
| ((JabberRPC)packet).getType() == IQ.Type.RESULT && |
| packet.getPacketID().equals(request.getPacketID()); |
| } |
| }); |
| |
| request.setType(IQ.Type.SET); |
| request.setTo(getId(connection.getRoster(), this.to)); |
| request.setFrom(this.connection.getUser()); |
| this.connection.sendPacket(request); |
| |
| final JabberRPC response = (JabberRPC)responseCollector.nextResult(20000); // TODO: allow the timeout to be specified |
| |
| responseCollector.cancel(); |
| |
| if (response == null) throw new XMLRPCCallFailureException("call timed out", new Integer(0)); |
| |
| final XMLRPCMessageProcessor responseParser = new XMLRPCMessageProcessor(); |
| |
| responseParser.parseMessage(response.getChildElementXML()); |
| |
| final List result = responseParser.getParams(); |
| |
| if (result == null) throw new XMLRPCCallFailureException("Empty response from server", new Integer(0)); |
| |
| if (numberOfparams == params.length) { |
| return result.get(0); |
| } else { |
| // pass the result of the call to the closure |
| final Closure closure = (Closure)params[numberOfparams]; |
| |
| closure.setDelegate(this); |
| return closure.call(new Object[] {result.get(0)}); |
| } |
| |
| } catch (final IOException e) { |
| throw new XMLRPCCallFailureException(e.getMessage(), new Integer(0)); |
| } catch (final XMLRPCFailException e) { |
| throw new XMLRPCCallFailureException(e.getFaultString(), e.getCause()); |
| } |
| } |
| |
| private String getId(final Roster roster, final String to) { |
| int pri; |
| int retries = 20; |
| String posTo = to; |
| |
| do { |
| final Iterator iter = roster.getPresences(to); |
| |
| pri = Integer.MIN_VALUE; |
| |
| if (iter != null) { |
| while(iter.hasNext()) { |
| final Presence presence = (Presence)iter.next(); |
| |
| if (presence.getPriority() > pri) { |
| posTo = presence.getFrom(); |
| pri = presence.getPriority(); |
| } |
| } |
| } |
| |
| if (pri >= 0) break; |
| |
| if (retries-- > 0) { |
| try { |
| Thread.sleep(1000); |
| } catch (final InterruptedException e) { |
| } |
| } else { |
| throw new JabberRPCException("User " + posTo + " not available"); |
| } |
| } while (true); |
| |
| return posTo; |
| } |
| |
| private final XMPPConnection connection; |
| private final String to; |
| } |