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Code Issues Releases Wiki Activity

SMACK-345: Improved detection of last activity. Properly synchronized access to lastMessageSent and registerd last activity namespace with ServiceDiscoveryManager. Improved LastActivity Provider

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git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@13475 b35dd754-fafc-0310-a699-88a17e54d16e
This commit is contained in:
Florian Schmaus 2013-02-14 00:00:54 +00:00 committed by flow
parent ddabe436b4
commit 4060a97b65
2 changed files with 128 additions and 63 deletions
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122
source/org/jivesoftware/smackx/LastActivityManager.java
View file

@ -26,45 +26,57 @@ import org.jivesoftware.smack.filter.IQTypeFilter;
import org.jivesoftware.smack.filter.PacketIDFilter;
import org.jivesoftware.smack.filter.PacketTypeFilter;
import org.jivesoftware.smack.packet.IQ;
import org.jivesoftware.smack.packet.Message;
import org.jivesoftware.smack.packet.Packet;
import org.jivesoftware.smack.packet.Presence;
import org.jivesoftware.smackx.packet.DiscoverInfo;
import org.jivesoftware.smackx.packet.LastActivity;
/**
* A last activity manager for handling information about the last activity associated
* with a Jabber ID. A manager handles incoming LastActivity requests of existing
* Connections. It also allows to request last activity information of other users.<p>
* A last activity manager for handling information about the last activity
* associated with a Jabber ID. A manager handles incoming LastActivity requests
* of existing Connections. It also allows to request last activity information
* of other users.
* <p>
*
* LastActivity (JEP-012) based on the sending JID's type allows for retrieval of:
* LastActivity (XEP-0012) based on the sending JID's type allows for retrieval
* of:
* <ol>
* <li>How long a particular user has been idle
* <li>How long a particular user has been logged-out and the message the specified when doing so.
* <li>How long a particular user has been logged-out and the message the
* specified when doing so.
* <li>How long a host has been up.
* </ol>
* <p/>
*
* For example to get the idle time of a user logged in a resource, simple send the
* LastActivity packet to them, as in the following code:<p>
* For example to get the idle time of a user logged in a resource, simple send
* the LastActivity packet to them, as in the following code:
* <p>
*
* <pre>
* Connection con = new XMPPConnection("jabber.org");
* con.login("john", "doe");
* LastActivity activity = LastActivity.getLastActivity(con, "xray@jabber.org/Smack");
* Connection con = new XMPPConnection(&quot;jabber.org&quot;);
* con.login(&quot;john&quot;, &quot;doe&quot;);
* LastActivity activity = LastActivity.getLastActivity(con, &quot;xray@jabber.org/Smack&quot;);
* </pre>
*
* To get the lapsed time since the last user logout is the same as above but with
* out the resource:
* To get the lapsed time since the last user logout is the same as above but
* with out the resource:
*
* <pre>
* LastActivity activity = LastActivity.getLastActivity(con, "xray@jabber.org");
* LastActivity activity = LastActivity.getLastActivity(con, &quot;xray@jabber.org&quot;);
* </pre>
*
* To get the uptime of a host, you simple send the LastActivity packet to it, as in the
* following code example:<p>
* To get the uptime of a host, you simple send the LastActivity packet to it,
* as in the following code example:
* <p>
*
* <pre>
* LastActivity activity = LastActivity.getLastActivity(con, "jabber.org");
* LastActivity activity = LastActivity.getLastActivity(con, &quot;jabber.org&quot;);
* </pre>
*
* @author Gabriel Guardincerri
* @see <a href="http://xmpp.org/extensions/xep-0012.html">XEP-0012: Last
* Activity</a>
*/
public class LastActivityManager {
@ -85,7 +97,8 @@ public class LastActivityManager {
/**
* Creates a last activity manager to response last activity requests.
*
* @param connection The Connection that the last activity requests will use.
* @param connection
* The Connection that the last activity requests will use.
*/
private LastActivityManager(Connection connection) {
this.connection = connection;
@ -93,9 +106,28 @@ public class LastActivityManager {
// Listen to all the sent messages to reset the idle time on each one
connection.addPacketSendingListener(new PacketListener() {
public void processPacket(Packet packet) {
Presence presence = (Presence) packet;
Presence.Mode mode = presence.getMode();
if (mode == null) return;
switch (mode) {
case available:
case chat:
// We assume that only a switch to available and chat indicates user activity
// since other mode changes could be also a result of some sort of automatism
resetIdleTime();
}
}, null);
}
}, new PacketTypeFilter(Presence.class));
connection.addPacketListener(new PacketListener() {
@Override
public void processPacket(Packet packet) {
Message message = (Message) packet;
// if it's not an error message, reset the idle time
if (message.getType() == Message.Type.error) return;
resetIdleTime();
}
}, new PacketTypeFilter(Message.class));
// Register a listener for a last activity query
connection.addPacketListener(new PacketListener() {
@ -112,6 +144,8 @@ public class LastActivityManager {
}
}, new AndFilter(new IQTypeFilter(IQ.Type.GET), new PacketTypeFilter(LastActivity.class)));
ServiceDiscoveryManager.getInstanceFor(connection).addFeature(LastActivity.NAMESPACE);
resetIdleTime();
}
/**
@ -119,7 +153,10 @@ public class LastActivityManager {
* sent.
*/
private void resetIdleTime() {
lastMessageSent = System.currentTimeMillis();
long now = System.currentTimeMillis();
synchronized (this) {
lastMessageSent = now;
}
}
/**
@ -128,8 +165,12 @@ public class LastActivityManager {
* @return the lapsed time between the last message sent and now.
*/
private long getIdleTime() {
long lms;
long now = System.currentTimeMillis();
return ((now - lastMessageSent) / 1000);
synchronized (this) {
lms = lastMessageSent;
}
return ((now - lms) / 1000);
}
/**
@ -137,26 +178,26 @@ public class LastActivityManager {
* (i.e., a JID of the form of 'user@host/resource') then the last activity
* is the idle time of that connected resource. On the other hand, when the
* jid is a bare JID (e.g. 'user@host') then the last activity is the lapsed
* time since the last logout or 0 if the user is currently logged in. Moreover,
* when the jid is a server or component (e.g., a JID of the form 'host') the
* last activity is the uptime.
* time since the last logout or 0 if the user is currently logged in.
* Moreover, when the jid is a server or component (e.g., a JID of the form
* 'host') the last activity is the uptime.
*
* @param con the current Connection.
* @param jid the JID of the user.
* @param con
* the current Connection.
* @param jid
* the JID of the user.
* @return the LastActivity packet of the jid.
* @throws XMPPException thrown if a server error has occured.
* @throws XMPPException
* thrown if a server error has occured.
*/
public static LastActivity getLastActivity(Connection con, String jid)
throws XMPPException {
public static LastActivity getLastActivity(Connection con, String jid) throws XMPPException {
LastActivity activity = new LastActivity();
activity.setTo(jid);
PacketCollector collector =
con.createPacketCollector(new PacketIDFilter(activity.getPacketID()));
PacketCollector collector = con.createPacketCollector(new PacketIDFilter(activity.getPacketID()));
con.sendPacket(activity);
LastActivity response =
(LastActivity) collector.nextResult(SmackConfiguration.getPacketReplyTimeout());
LastActivity response = (LastActivity) collector.nextResult(SmackConfiguration.getPacketReplyTimeout());
// Cancel the collector.
collector.cancel();
@ -169,4 +210,21 @@ public class LastActivityManager {
return response;
}
/**
* Returns true if Last Activity (XEP-0012) is supported by a given JID
*
* @param connection the connection to be used
* @param jid a JID to be tested for Last Activity support
* @return true if Last Activity is supported, otherwise false
*/
public static boolean isLastActivitySupported(Connection connection, String jid) {
try {
DiscoverInfo result =
ServiceDiscoveryManager.getInstanceFor(connection).discoverInfo(jid);
return result.containsFeature(LastActivity.NAMESPACE);
}
catch (XMPPException e) {
return false;
}
}
}

33
source/org/jivesoftware/smackx/packet/LastActivity.java
View file

@ -20,6 +20,8 @@
package org.jivesoftware.smackx.packet;
import java.io.IOException;
import org.jivesoftware.smack.PacketCollector;
import org.jivesoftware.smack.SmackConfiguration;
import org.jivesoftware.smack.Connection;
@ -29,10 +31,11 @@ import org.jivesoftware.smack.packet.IQ;
import org.jivesoftware.smack.provider.IQProvider;
import org.jivesoftware.smack.util.StringUtils;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
/**
* A last activity IQ for retrieving information about the last activity associated with a Jabber ID.
* LastActivity (JEP-012) allows for retrieval of how long a particular user has been idle and the
* LastActivity (XEP-0012) allows for retrieval of how long a particular user has been idle and the
* message the specified when doing so. Use {@link org.jivesoftware.smackx.LastActivityManager}
* to get the last activity of a user.
*
@ -40,6 +43,8 @@ import org.xmlpull.v1.XmlPullParser;
*/
public class LastActivity extends IQ {
public static final String NAMESPACE = "jabber:iq:last";
public long lastActivity = -1;
public String message;
@ -49,10 +54,9 @@ public class LastActivity extends IQ {
public String getChildElementXML() {
StringBuilder buf = new StringBuilder();
buf.append("<query xmlns=\"jabber:iq:last\"");
buf.append("<query xmlns=\"" + NAMESPACE + "\"");
if (lastActivity != -1) {
buf.append(" seconds=\"").append(lastActivity).append("\"");
}
buf.append("></query>");
return buf.toString();
@ -100,27 +104,30 @@ public class LastActivity extends IQ {
super();
}
public IQ parseIQ(XmlPullParser parser) throws Exception {
public IQ parseIQ(XmlPullParser parser) throws XMPPException, XmlPullParserException {
if (parser.getEventType() != XmlPullParser.START_TAG) {
throw new IllegalStateException("Parser not in proper position, or bad XML.");
throw new XMPPException("Parser not in proper position, or bad XML.");
}
LastActivity lastActivity = new LastActivity();
try {
String seconds = parser.getAttributeValue("", "seconds");
String message = parser.nextText();
String message = null;
try {
message = parser.nextText();
} catch (IOException e1) {
// Ignore
}
if (seconds != null) {
long xmlSeconds = new Double(seconds).longValue();
lastActivity.setLastActivity((int)xmlSeconds);
try {
lastActivity.setLastActivity(Long.parseLong(seconds));
} catch (NumberFormatException e) {
// Ignore
}
}
if (message != null) {
lastActivity.setMessage(message);
}
}
catch (Exception e) {
e.printStackTrace();
}
return lastActivity;
}
}