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Smack/source/org/jivesoftware/smackx/workgroup/agent/AgentSession.java
Matt Tucker 5d656558fd Initial check-in.
git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@2369 b35dd754-fafc-0310-a699-88a17e54d16e
2004-08-16 00:57:36 +00:00

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Java
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/**
* $RCSfile$
* $Revision$
* $Date$
*
* Copyright (C) 1999-2003 Jive Software. All rights reserved.
*
* This software is the proprietary information of Jive Software.
* Use is subject to license terms.
*/
package org.jivesoftware.smackx.workgroup.agent;
import java.util.*;
import org.jivesoftware.smack.*;
import org.jivesoftware.smack.filter.*;
import org.jivesoftware.smack.packet.*;
import org.jivesoftware.smack.util.StringUtils;
import org.jivesoftware.smackx.GroupChatInvitation;
import org.jivesoftware.smackx.workgroup.*;
import org.jivesoftware.smackx.workgroup.packet.*;
/**
* This class embodies the agent's active presence within a given workgroup. The application
* should have N instances of this class, where N is the number of workgroups to which the
* owning agent of the application belongs. This class provides all functionality that a
* session within a given workgroup is expected to have from an agent's perspective -- setting
* the status, tracking the status of queues to which the agent belongs within the workgroup, and
* dequeuing customers.
*
* @author Matt Tucker
* @author loki der quaeler
*/
public class AgentSession {
private XMPPConnection connection;
private String workgroupName;
private boolean online = false;
private Presence.Mode presenceMode;
private int currentChats;
private int maxChats;
private Map metaData;
private Map queues;
private List offerListeners;
private List invitationListeners;
private List queueUsersListeners;
private List queueAgentsListeners;
/**
* Creates a new agent session instance.
*
* @param connection a connection instance which must have already gone through authentication.
* @param workgroupName the fully qualified name of the workgroup.
*/
public AgentSession(String workgroupName, XMPPConnection connection) {
// Login must have been done before passing in connection.
if (!connection.isAuthenticated()) {
throw new IllegalStateException("Must login to server before creating workgroup.");
}
this.workgroupName = workgroupName;
this.connection = connection;
this.maxChats = -1;
this.metaData = new HashMap();
this.queues = new HashMap();
offerListeners = new ArrayList();
invitationListeners = new ArrayList();
queueUsersListeners = new ArrayList();
queueAgentsListeners = new ArrayList();
// Create a filter to listen for packets we're interested in.
OrFilter filter = new OrFilter();
filter.addFilter(new PacketTypeFilter(OfferRequestProvider.OfferRequestPacket.class));
filter.addFilter(new PacketTypeFilter(OfferRevokeProvider.OfferRevokePacket.class));
filter.addFilter(new PacketTypeFilter(Presence.class));
filter.addFilter(new PacketTypeFilter(Message.class));
// only interested in packets from the workgroup or from operators also running the
// operator client -- for example peer-to-peer invites wouldn't come from
// the workgroup, but would come from the operator client
//OrFilter froms = new OrFilter(new FromContainsFilter(this.workgroupName),
// new FromContainsFilter(clientResource));
connection.addPacketListener(new PacketListener() {
public void processPacket(Packet packet) {
handlePacket(packet);
}
}, filter);
}
/**
* Returns the agent's current presence mode.
*
* @return the agent's current presence mode.
*/
public Presence.Mode getPresenceMode() {
return presenceMode;
}
/**
* Returns the current number of chats the agent is in.
*
* @return the current number of chats the agent is in.
*/
public int getCurrentChats() {
return currentChats;
}
/**
* Returns the maximum number of chats the agent can participate in.
*
* @return the maximum number of chats the agent can participate in.
*/
public int getMaxChats() {
return maxChats;
}
/**
* Returns true if the agent is online with the workgroup.
*
* @return true if the agent is online with the workgroup.
*/
public boolean isOnline() {
return online;
}
/**
* Allows the addition of a new key-value pair to the agent's meta data, if the value is
* new data, the revised meta data will be rebroadcast in an agent's presence broadcast.
*
* @param key the meta data key
* @param val the non-null meta data value
*/
public void setMetaData(String key, String val) throws XMPPException {
synchronized (this.metaData) {
String oldVal = (String)this.metaData.get(key);
if ((oldVal == null) || (! oldVal.equals(val))) {
metaData.put(key, val);
setStatus(presenceMode, currentChats, maxChats);
}
}
}
/**
* Allows the removal of data from the agent's meta data, if the key represents existing data,
* the revised meta data will be rebroadcast in an agent's presence broadcast.
*
* @param key the meta data key
*/
public void removeMetaData(String key)
throws XMPPException {
synchronized (this.metaData) {
String oldVal = (String)metaData.remove(key);
if (oldVal != null) {
setStatus(presenceMode, currentChats, maxChats);
}
}
}
/**
* Allows the retrieval of meta data for a specified key.
*
* @param key the meta data key
* @return the meta data value associated with the key or <tt>null</tt> if the meta-data
* doesn't exist..
*/
public String getMetaData(String key) {
return (String)metaData.get(key);
}
/**
* Sets whether the agent is online with the workgroup. If the user tries to go online with
* the workgroup but is not allowed to be an agent, an XMPPError with error code 401 will
* be thrown.
*
* @param online true to set the agent as online with the workgroup.
* @throws XMPPException if an error occurs setting the online status.
*/
public void setOnline( boolean online ) throws XMPPException {
// If the online status hasn't changed, do nothing.
if (this.online == online) {
return;
}
this.online = online;
Presence presence = null;
// If the user is going online...
if (online) {
presence = new Presence(Presence.Type.AVAILABLE);
presence.setTo(workgroupName);
PacketCollector collector = this.connection.createPacketCollector(new AndFilter(
new PacketTypeFilter(Presence.class), new FromContainsFilter(workgroupName)));
connection.sendPacket(presence);
presence = (Presence)collector.nextResult(5000);
collector.cancel();
if (presence == null) {
throw new XMPPException("No response from server on status set.");
}
if (presence.getError() != null) {
throw new XMPPException(presence.getError());
}
}
// Otherwise the user is going offline...
else {
presence = new Presence(Presence.Type.UNAVAILABLE);
presence.setTo(workgroupName);
connection.sendPacket(presence);
}
}
/**
* Sets the agent's current status with the workgroup. The presence mode affects how offers
* are routed to the agent. The possible presence modes with their meanings are as follows:<ul>
*
* <li>Presence.Mode.AVAILABLE -- (Default) the agent is available for more chats
* (equivalent to Presence.Mode.CHAT).
* <li>Presence.Mode.DO_NOT_DISTURB -<2D> the agent is busy and should not be disturbed.
* However, special case, or extreme urgency chats may still be offered to the agent.
* <li>Presence.Mode.AWAY -- the agent is not available and should not
* have a chat routed to them (equivalent to Presence.Mode.EXTENDED_AWAY).</ul>
*
* The current chats value indicates how many chats the agent is currently in. Because the agent
* is responsible for reporting the current chats value to the server, this value <b>must</b>
* be set every time it changes.<p>
*
* The max chats value is the maximum number of chats the agent is willing to have routed to
* them at once. Some servers may be configured to only accept max chat values in a certain
* range; for example, between two and five. In that case, the maxChats value the agent sends
* may be adjusted by the server to a value within that range.
*
* @param presenceMode the presence mode of the agent.
* @param currentChats the current number of chats the agent is in.
* @param maxChats the maximum number of chats the agent is willing to accept.
* @throws XMPPException if an error occurs setting the agent status.
* @throws IllegalStateException if the agent is not online with the workgroup.
*/
public void setStatus(Presence.Mode presenceMode, int currentChats, int maxChats )
throws XMPPException
{
setStatus( presenceMode, currentChats, maxChats, null );
}
/**
* Sets the agent's current status with the workgroup. The presence mode affects how offers
* are routed to the agent. The possible presence modes with their meanings are as follows:<ul>
*
* <li>Presence.Mode.AVAILABLE -- (Default) the agent is available for more chats
* (equivalent to Presence.Mode.CHAT).
* <li>Presence.Mode.DO_NOT_DISTURB -<2D> the agent is busy and should not be disturbed.
* However, special case, or extreme urgency chats may still be offered to the agent.
* <li>Presence.Mode.AWAY -- the agent is not available and should not
* have a chat routed to them (equivalent to Presence.Mode.EXTENDED_AWAY).</ul>
*
* The current chats value indicates how many chats the agent is currently in. Because the agent
* is responsible for reporting the current chats value to the server, this value <b>must</b>
* be set every time it changes.<p>
*
* The max chats value is the maximum number of chats the agent is willing to have routed to
* them at once. Some servers may be configured to only accept max chat values in a certain
* range; for example, between two and five. In that case, the maxChats value the agent sends
* may be adjusted by the server to a value within that range.
*
* @param presenceMode the presence mode of the agent.
* @param currentChats the current number of chats the agent is in.
* @param maxChats the maximum number of chats the agent is willing to accept.
* @param status sets the status message of the presence update.
* @throws XMPPException if an error occurs setting the agent status.
* @throws IllegalStateException if the agent is not online with the workgroup.
*/
public void setStatus(Presence.Mode presenceMode, int currentChats, int maxChats, String status )
throws XMPPException
{
if (!online) {
throw new IllegalStateException("Cannot set status when the agent is not online.");
}
if (presenceMode == null) {
presenceMode = Presence.Mode.AVAILABLE;
}
this.presenceMode = presenceMode;
this.currentChats = currentChats;
this.maxChats = maxChats;
Presence presence = new Presence(Presence.Type.AVAILABLE);
presence.setMode(presenceMode);
presence.setTo(this.getWorkgroupName());
if( status != null ) {
presence.setStatus( status );
}
// Send information about max chats and current chats as a packet extension.
DefaultPacketExtension agentStatus = new DefaultPacketExtension(AgentStatus.ELEMENT_NAME,
AgentStatus.NAMESPACE);
agentStatus.setValue("current-chats", ""+currentChats);
agentStatus.setValue("max-chats", ""+maxChats);
presence.addExtension(agentStatus);
presence.addExtension(new MetaData(this.metaData));
PacketCollector collector = this.connection.createPacketCollector(new AndFilter(
new PacketTypeFilter(Presence.class), new FromContainsFilter(workgroupName)));
this.connection.sendPacket(presence);
presence = (Presence)collector.nextResult(5000);
collector.cancel();
if (presence == null) {
throw new XMPPException("No response from server on status set.");
}
if (presence.getError() != null) {
throw new XMPPException(presence.getError());
}
}
/**
* Removes a user from the workgroup queue. This is an administrative action that the
*
* The agent is not guaranteed of having privileges to perform this action; an exception
* denying the request may be thrown.
*/
public void dequeueUser(String userID) throws XMPPException {
// todo: this method simply won't work right now.
DepartQueuePacket departPacket = new DepartQueuePacket(this.workgroupName);
// PENDING
this.connection.sendPacket(departPacket);
}
/**
* @return the fully-qualified name of the workgroup for which this session exists
*/
public String getWorkgroupName() {
return workgroupName;
}
/**
* @param queueName the name of the queue
* @return an instance of WorkgroupQueue for the argument queue name, or null if none exists
*/
public WorkgroupQueue getQueue(String queueName) {
return (WorkgroupQueue)queues.get(queueName);
}
public Iterator getQueues() {
return Collections.unmodifiableMap((new HashMap(queues))).values().iterator();
}
public void addQueueUsersListener(QueueUsersListener listener) {
synchronized(queueUsersListeners) {
if (!queueUsersListeners.contains(listener)) {
queueUsersListeners.add(listener);
}
}
}
public void removeQueueUsersListener(QueueUsersListener listener) {
synchronized(queueUsersListeners) {
queueUsersListeners.remove(listener);
}
}
public void addQueueAgentsListener(QueueAgentsListener listener) {
synchronized(queueAgentsListeners) {
if (!queueAgentsListeners.contains(listener)) {
queueAgentsListeners.add(listener);
}
}
}
public void removeQueueAgentsListener(QueueAgentsListener listener) {
synchronized(queueAgentsListeners) {
queueAgentsListeners.remove(listener);
}
}
/**
* Adds an offer listener.
*
* @param offerListener the offer listener.
*/
public void addOfferListener(OfferListener offerListener) {
synchronized(offerListeners) {
if (!offerListeners.contains(offerListener)) {
offerListeners.add(offerListener);
}
}
}
/**
* Removes an offer listener.
*
* @param offerListener the offer listener.
*/
public void removeOfferListener(OfferListener offerListener) {
synchronized(offerListeners) {
offerListeners.remove(offerListener);
}
}
/**
* Adds an invitation listener.
*
* @param invitationListener the invitation listener.
*/
public void addInvitationListener(InvitationListener invitationListener) {
synchronized(invitationListeners) {
if (!invitationListeners.contains(invitationListener)) {
invitationListeners.add(invitationListener);
}
}
}
/**
* Removes an invitation listener.
*
* @param invitationListener the invitation listener.
*/
public void removeInvitationListener(InvitationListener invitationListener) {
synchronized(invitationListeners) {
offerListeners.remove(invitationListener);
}
}
private void fireOfferRequestEvent(OfferRequestProvider.OfferRequestPacket requestPacket) {
Offer offer = new Offer(this.connection, this, requestPacket.getUserID(),
this.getWorkgroupName(),
new Date((new Date()).getTime()
+ (requestPacket.getTimeout() * 1000)),
requestPacket.getSessionID(), requestPacket.getMetaData());
synchronized (offerListeners) {
for (Iterator i=offerListeners.iterator(); i.hasNext(); ) {
OfferListener listener = (OfferListener)i.next();
listener.offerReceived(offer);
}
}
}
private void fireOfferRevokeEvent(OfferRevokeProvider.OfferRevokePacket orp) {
RevokedOffer revokedOffer = new RevokedOffer(orp.getUserID(), this.getWorkgroupName(),
orp.getSessionID(), orp.getReason(),
new Date());
synchronized (offerListeners) {
for (Iterator i=offerListeners.iterator(); i.hasNext(); ) {
OfferListener listener = (OfferListener)i.next();
listener.offerRevoked(revokedOffer);
}
}
}
private void fireInvitationEvent(String groupChatJID, String sessionID, String body,
String from, Map metaData)
{
Invitation invitation = new Invitation(connection.getUser(), groupChatJID,
workgroupName, sessionID, body, from, metaData);
synchronized(invitationListeners) {
for (Iterator i=invitationListeners.iterator(); i.hasNext(); ) {
InvitationListener listener = (InvitationListener)i.next();
listener.invitationReceived(invitation);
}
}
}
private void fireQueueUsersEvent(WorkgroupQueue queue, WorkgroupQueue.Status status,
int averageWaitTime, Date oldestEntry, Set users)
{
synchronized(queueUsersListeners) {
for (Iterator i=queueUsersListeners.iterator(); i.hasNext(); ) {
QueueUsersListener listener = (QueueUsersListener)i.next();
if (status != null) {
listener.statusUpdated(queue, status);
}
if (averageWaitTime != -1) {
listener.averageWaitTimeUpdated(queue, averageWaitTime);
}
if (oldestEntry != null) {
listener.oldestEntryUpdated(queue, oldestEntry);
}
if (users != null) {
listener.usersUpdated(queue, users);
}
}
}
}
private void fireQueueAgentsEvent(WorkgroupQueue queue, int currentChats,
int maxChats, Set agents)
{
synchronized(queueAgentsListeners) {
for (Iterator i=queueAgentsListeners.iterator(); i.hasNext(); ) {
QueueAgentsListener listener = (QueueAgentsListener)i.next();
if (currentChats != -1) {
listener.currentChatsUpdated(queue, currentChats);
}
if (maxChats != -1) {
listener.maxChatsUpdated(queue, maxChats);
}
if (agents != null) {
listener.agentsUpdated(queue, agents);
}
}
}
}
// PacketListener Implementation.
private void handlePacket(Packet packet) {
if (packet instanceof OfferRequestProvider.OfferRequestPacket) {
fireOfferRequestEvent((OfferRequestProvider.OfferRequestPacket)packet);
}
else if (packet instanceof Presence) {
Presence presence = (Presence)packet;
// The workgroup can send us a number of different presence packets. We
// check for different packet extensions to see what type of presence
// packet it is.
String queueName = StringUtils.parseResource(presence.getFrom());
WorkgroupQueue queue = (WorkgroupQueue)queues.get(queueName);
// If there isn't already an entry for the queue, create a new one.
if (queue == null) {
queue = new WorkgroupQueue(queueName);
queues.put(queueName, queue);
}
// QueueOverview packet extensions contain basic information about a queue.
QueueOverview queueOverview = (QueueOverview)presence.getExtension(
QueueOverview.ELEMENT_NAME, QueueOverview.NAMESPACE);
if (queueOverview != null) {
if (queueOverview.getStatus() == null) {
queue.setStatus(WorkgroupQueue.Status.CLOSED);
}
else {
queue.setStatus(queueOverview.getStatus());
}
queue.setAverageWaitTime(queueOverview.getAverageWaitTime());
queue.setOldestEntry(queueOverview.getOldestEntry());
// Fire event.
fireQueueUsersEvent(queue, queueOverview.getStatus(),
queueOverview.getAverageWaitTime(), queueOverview.getOldestEntry(),
null);
return;
}
// QueueDetails packet extensions contain information about the users in
// a queue.
QueueDetails queueDetails = (QueueDetails)packet.getExtension(
QueueDetails.ELEMENT_NAME, QueueDetails.NAMESPACE);
if (queueDetails != null) {
queue.setUsers(queueDetails.getUsers());
// Fire event.
fireQueueUsersEvent(queue, null, -1, null, queueDetails.getUsers());
return;
}
// Notify agent packets gives an overview of agent activity in a queue.
DefaultPacketExtension notifyAgents = (DefaultPacketExtension)presence.getExtension(
"notify-agents", "xmpp:workgroup");
if (notifyAgents != null) {
int currentChats = Integer.parseInt(notifyAgents.getValue("current-chats"));
int maxChats = Integer.parseInt(notifyAgents.getValue("max-chats"));
queue.setCurrentChats(currentChats);
queue.setMaxChats(maxChats);
// Fire event.
fireQueueAgentsEvent(queue, currentChats, maxChats, null);
return;
}
// Agent status
AgentStatus agentStatus = (AgentStatus)presence.getExtension(AgentStatus.ELEMENT_NAME,
AgentStatus.NAMESPACE);
if (agentStatus != null) {
Set agents = agentStatus.getAgents();
// Look for information about the agent that created this session and
// update local status fields accordingly.
for (Iterator i=agents.iterator(); i.hasNext(); ) {
Agent agent = (Agent)i.next();
if (agent.getUser().equals(StringUtils.parseBareAddress(
connection.getUser())))
{
maxChats = agent.getMaxChats();
currentChats = agent.getCurrentChats();
}
}
// Set the list of agents for the queue.
queue.setAgents(agents);
// Fire event.
fireQueueAgentsEvent(queue, -1, -1, agentStatus.getAgents());
return;
}
}
else if (packet instanceof Message) {
Message message = (Message)packet;
GroupChatInvitation invitation = (GroupChatInvitation)message.getExtension(
GroupChatInvitation.ELEMENT_NAME, GroupChatInvitation.NAMESPACE);
if (invitation != null) {
String roomAddress = invitation.getRoomAddress();
String sessionID = null;
Map metaData = null;
SessionID sessionIDExt = (SessionID)message.getExtension(SessionID.ELEMENT_NAME,
SessionID.NAMESPACE);
if (sessionIDExt != null) {
sessionID = sessionIDExt.getSessionID();
}
MetaData metaDataExt = (MetaData)message.getExtension(MetaData.ELEMENT_NAME,
MetaData.NAMESPACE);
if (metaDataExt != null) {
metaData = metaDataExt.getMetaData();
}
this.fireInvitationEvent(roomAddress, sessionID, message.getBody(),
message.getFrom(), metaData);
}
}
else if (packet instanceof OfferRevokeProvider.OfferRevokePacket) {
fireOfferRevokeEvent((OfferRevokeProvider.OfferRevokePacket)packet);
}
}
}