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Diffstat (limited to 'src/org/jivesoftware/smackx/commands/RemoteCommand.java')
| -rwxr-xr-x | src/org/jivesoftware/smackx/commands/RemoteCommand.java | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/src/org/jivesoftware/smackx/commands/RemoteCommand.java b/src/org/jivesoftware/smackx/commands/RemoteCommand.java new file mode 100755 index 0000000..3c2df1d --- /dev/null +++ b/src/org/jivesoftware/smackx/commands/RemoteCommand.java @@ -0,0 +1,201 @@ +/** + * $RCSfile$ + * $Revision$ + * $Date$ + * + * Copyright 2005-2007 Jive Software. + * + * All rights reserved. Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.jivesoftware.smackx.commands; + +import org.jivesoftware.smack.PacketCollector; +import org.jivesoftware.smack.SmackConfiguration; +import org.jivesoftware.smack.Connection; +import org.jivesoftware.smack.XMPPException; +import org.jivesoftware.smack.filter.PacketIDFilter; +import org.jivesoftware.smack.packet.IQ; +import org.jivesoftware.smack.packet.Packet; +import org.jivesoftware.smackx.Form; +import org.jivesoftware.smackx.packet.AdHocCommandData; + +/** + * Represents a command that is in a remote location. Invoking one of the + * {@link AdHocCommand.Action#execute execute}, {@link AdHocCommand.Action#next next}, + * {@link AdHocCommand.Action#prev prev}, {@link AdHocCommand.Action#cancel cancel} or + * {@link AdHocCommand.Action#complete complete} actions results in executing that + * action in the remote location. In response to that action the internal state + * of the this command instance will change. For example, if the command is a + * single stage command, then invoking the execute action will execute this + * action in the remote location. After that the local instance will have a + * state of "completed" and a form or notes that applies. + * + * @author Gabriel Guardincerri + * + */ +public class RemoteCommand extends AdHocCommand { + + /** + * The connection that is used to execute this command + */ + private Connection connection; + + /** + * The full JID of the command host + */ + private String jid; + + /** + * The session ID of this execution. + */ + private String sessionID; + + + /** + * The number of milliseconds to wait for a response from the server + * The default value is the default packet reply timeout (5000 ms). + */ + private long packetReplyTimeout; + + /** + * Creates a new RemoteCommand that uses an specific connection to execute a + * command identified by <code>node</code> in the host identified by + * <code>jid</code> + * + * @param connection the connection to use for the execution. + * @param node the identifier of the command. + * @param jid the JID of the host. + */ + protected RemoteCommand(Connection connection, String node, String jid) { + super(); + this.connection = connection; + this.jid = jid; + this.setNode(node); + this.packetReplyTimeout = SmackConfiguration.getPacketReplyTimeout(); + } + + @Override + public void cancel() throws XMPPException { + executeAction(Action.cancel, packetReplyTimeout); + } + + @Override + public void complete(Form form) throws XMPPException { + executeAction(Action.complete, form, packetReplyTimeout); + } + + @Override + public void execute() throws XMPPException { + executeAction(Action.execute, packetReplyTimeout); + } + + /** + * Executes the default action of the command with the information provided + * in the Form. This form must be the anwser form of the previous stage. If + * there is a problem executing the command it throws an XMPPException. + * + * @param form the form anwser of the previous stage. + * @throws XMPPException if an error occurs. + */ + public void execute(Form form) throws XMPPException { + executeAction(Action.execute, form, packetReplyTimeout); + } + + @Override + public void next(Form form) throws XMPPException { + executeAction(Action.next, form, packetReplyTimeout); + } + + @Override + public void prev() throws XMPPException { + executeAction(Action.prev, packetReplyTimeout); + } + + private void executeAction(Action action, long packetReplyTimeout) throws XMPPException { + executeAction(action, null, packetReplyTimeout); + } + + /** + * Executes the <code>action</codo> with the <code>form</code>. + * The action could be any of the available actions. The form must + * be the anwser of the previous stage. It can be <tt>null</tt> if it is the first stage. + * + * @param action the action to execute. + * @param form the form with the information. + * @param timeout the amount of time to wait for a reply. + * @throws XMPPException if there is a problem executing the command. + */ + private void executeAction(Action action, Form form, long timeout) throws XMPPException { + // TODO: Check that all the required fields of the form were filled, if + // TODO: not throw the corresponding exeption. This will make a faster response, + // TODO: since the request is stoped before it's sent. + AdHocCommandData data = new AdHocCommandData(); + data.setType(IQ.Type.SET); + data.setTo(getOwnerJID()); + data.setNode(getNode()); + data.setSessionID(sessionID); + data.setAction(action); + + if (form != null) { + data.setForm(form.getDataFormToSend()); + } + + PacketCollector collector = connection.createPacketCollector( + new PacketIDFilter(data.getPacketID())); + + connection.sendPacket(data); + + Packet response = collector.nextResult(timeout); + + // Cancel the collector. + collector.cancel(); + if (response == null) { + throw new XMPPException("No response from server on status set."); + } + if (response.getError() != null) { + throw new XMPPException(response.getError()); + } + + AdHocCommandData responseData = (AdHocCommandData) response; + this.sessionID = responseData.getSessionID(); + super.setData(responseData); + } + + @Override + public String getOwnerJID() { + return jid; + } + + /** + * Returns the number of milliseconds to wait for a respone. The + * {@link SmackConfiguration#getPacketReplyTimeout default} value + * should be adjusted for commands that can take a long time to execute. + * + * @return the number of milliseconds to wait for responses. + */ + public long getPacketReplyTimeout() { + return packetReplyTimeout; + } + + /** + * Returns the number of milliseconds to wait for a respone. The + * {@link SmackConfiguration#getPacketReplyTimeout default} value + * should be adjusted for commands that can take a long time to execute. + * + * @param packetReplyTimeout the number of milliseconds to wait for responses. + */ + public void setPacketReplyTimeout(long packetReplyTimeout) { + this.packetReplyTimeout = packetReplyTimeout; + } +}
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