[3952] | 1 | /* |
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| 2 | * Jeti, a Java Jabber client, Copyright (C) 2003 E.S. de Boer |
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| 3 | * |
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| 4 | * This program is free software; you can redistribute it and/or modify |
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| 5 | * it under the terms of the GNU General Public License as published by |
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| 6 | * the Free Software Foundation; either version 2 of the License, or |
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| 7 | * (at your option) any later version. |
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| 8 | * |
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| 9 | * This program is distributed in the hope that it will be useful, |
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| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 12 | * GNU General Public License for more details. |
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| 13 | * |
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| 14 | * You should have received a copy of the GNU General Public License |
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| 15 | * along with this program; if not, write to the Free Software |
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| 16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 17 | * |
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| 18 | * For questions, comments etc, |
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| 19 | * use the website at http://jeti.jabberstudio.org |
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| 20 | * or mail me at eric@jeti.tk |
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| 21 | */ |
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| 22 | |
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| 23 | package nu.fw.jeti.backend; |
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| 24 | |
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| 25 | import java.util.HashMap; |
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| 26 | import java.util.Map; |
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| 27 | import java.util.Timer; |
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| 28 | import java.util.TimerTask; |
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| 29 | |
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| 30 | import nu.fw.jeti.events.DiscoveryListener; |
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| 31 | import nu.fw.jeti.events.StatusChangeListener; |
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| 32 | import nu.fw.jeti.jabber.Backend; |
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| 33 | import nu.fw.jeti.jabber.JID; |
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| 34 | import nu.fw.jeti.jabber.elements.*; |
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| 35 | |
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| 36 | /** |
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| 37 | * @author E.S. de Boer |
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| 38 | */ |
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| 39 | //created on 6-8-2004 |
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| 40 | public class Discovery implements DiscoveryListener, StatusChangeListener |
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| 41 | { |
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| 42 | private Backend backend; |
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| 43 | private Map infoCache = new HashMap(); |
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| 44 | private Map itemCache = new HashMap(); |
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| 45 | private Map itemRequests = new HashMap(5); |
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| 46 | private Map infoRequests = new HashMap(10); |
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| 47 | private Map timeoutTimers = new HashMap(20); |
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| 48 | private Timer timer = new Timer(true); |
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| 49 | |
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| 50 | private int idCount; |
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| 51 | |
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| 52 | public Discovery(Backend backend) |
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| 53 | { |
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| 54 | this.backend = backend; |
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| 55 | } |
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| 56 | |
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| 57 | public void getItems(JID jid,DiscoveryListener listener) { |
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| 58 | getItems(jid, listener, true); |
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| 59 | } |
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| 60 | |
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| 61 | public void getItems(JID jid,DiscoveryListener listener, boolean useCache) |
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| 62 | { |
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| 63 | if (listener == null) listener = this; |
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| 64 | DiscoveryItem item = null; |
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| 65 | if (!useCache || null == (item = (DiscoveryItem)itemCache.get(jid))) |
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| 66 | {//first try disco |
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| 67 | String id = "Jeti_Disco_" + idCount++; |
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| 68 | InfoQuery iq = new InfoQuery(jid,"get",id,new IQDiscoItems()); |
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| 69 | timeout(iq); |
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| 70 | itemRequests.put(id,listener); |
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| 71 | backend.send(iq); |
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| 72 | } else { |
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| 73 | listener.discoveryItemResult(jid,item); |
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| 74 | } |
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| 75 | } |
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| 76 | |
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| 77 | public void getInfo(JID jid,DiscoveryListener listener) |
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| 78 | { |
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| 79 | if (listener == null) listener = this; |
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| 80 | DiscoveryInfo info = (DiscoveryInfo)infoCache.get(jid); |
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| 81 | if(info == null) |
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| 82 | {//first try disco |
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| 83 | String id = "Jeti_Disco_" + idCount++; |
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| 84 | InfoQuery iq =new InfoQuery(jid,"get",id,new IQDiscoInfo()); |
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| 85 | timeout(iq); |
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| 86 | infoRequests.put(id,listener); |
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| 87 | backend.send(iq); |
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| 88 | } |
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| 89 | else listener.discoveryInfoResult(jid,info); |
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| 90 | } |
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| 91 | |
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| 92 | //no cache TODO add no browse if node query error |
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| 93 | public void getItems(JID jid,String node,DiscoveryListener listener) |
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| 94 | { |
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| 95 | if (listener == null) return;//no cache so empty listener is useless |
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| 96 | //DiscoveryItem item = (DiscoveryItem)itemCache.get(jid); |
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| 97 | //if(item == null) |
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| 98 | { |
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| 99 | String id = "Jeti_Disco_" + idCount++; |
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| 100 | InfoQuery iq = new InfoQuery(jid,"get",id,new IQDiscoItems(node)); |
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| 101 | timeout(iq); |
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| 102 | itemRequests.put(id,listener); |
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| 103 | backend.send(iq); |
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| 104 | } |
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| 105 | //else listener.discoveryItemResult(jid,item); |
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| 106 | } |
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| 107 | |
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| 108 | public void getInfo(JID jid,String node,DiscoveryListener listener) |
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| 109 | { |
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| 110 | if (listener == null) listener = this; |
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| 111 | DiscoveryInfo info = (DiscoveryInfo)infoCache.get(jid); |
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| 112 | if(info == null) |
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| 113 | {//first try disco |
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| 114 | String id = "Jeti_Disco_" + idCount++; |
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| 115 | InfoQuery iq =new InfoQuery(jid,"get",id,new IQDiscoInfo(node)); |
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| 116 | timeout(iq); |
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| 117 | infoRequests.put(id,listener); |
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| 118 | backend.send(iq); |
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| 119 | } |
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| 120 | else listener.discoveryInfoResult(jid,info); |
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| 121 | } |
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| 122 | |
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| 123 | public void discoveryInfoResult(JID jid,String id,IQDiscoInfo info) |
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| 124 | { |
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| 125 | TimerTask t =(TimerTask) timeoutTimers.remove(id); |
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| 126 | if(t!=null)t.cancel(); |
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| 127 | infoCache.put(jid,info); |
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| 128 | DiscoveryListener d = (DiscoveryListener)infoRequests.remove(id); |
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| 129 | if(d!=null) d.discoveryInfoResult(jid,info); |
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| 130 | } |
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| 131 | |
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| 132 | public void discoveryItemResult(JID jid,String id,IQDiscoItems item) |
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| 133 | { |
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| 134 | TimerTask t =(TimerTask) timeoutTimers.remove(id); |
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| 135 | if(t!=null)t.cancel(); |
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| 136 | itemCache.put(jid,item); |
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| 137 | DiscoveryListener d =(DiscoveryListener)itemRequests.remove(id); |
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| 138 | if(d!=null)d.discoveryItemResult(jid,item); |
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| 139 | } |
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| 140 | |
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| 141 | |
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| 142 | // public void browseResult(JID jid,String id,IQBrowse item) |
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| 143 | // { |
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| 144 | // TimerTask t =(TimerTask) timeoutTimers.remove(id); |
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| 145 | // if(t!=null)t.cancel(); |
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| 146 | // if(itemRequests.containsKey(id)) |
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| 147 | // { |
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| 148 | // itemCache.put(item.getJID(),item); |
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| 149 | // DiscoveryListener d =(DiscoveryListener)itemRequests.remove(id); |
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| 150 | // if(d!=null)d.discoveryItemResult(jid,item); |
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| 151 | // } |
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| 152 | // else if(infoRequests.containsKey(id)) |
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| 153 | // { |
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| 154 | // infoCache.put(item.getJID(),item); |
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| 155 | // DiscoveryListener d = (DiscoveryListener)infoRequests.remove(id); |
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| 156 | // if(d!=null)d.discoveryInfoResult(jid,item); |
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| 157 | // } |
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| 158 | // } |
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| 159 | |
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| 160 | public void discoError(String id,JID jid) |
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| 161 | {//no disco so try browse |
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| 162 | TimerTask t =(TimerTask) timeoutTimers.remove(id); |
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| 163 | if(t!=null)t.cancel(); |
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| 164 | // String newID = "Jeti_Browse_" + idCount++; |
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| 165 | // InfoQuery iq =new InfoQuery(jid,"get",newID,new IQBrowse()); |
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| 166 | // backend.send(iq); |
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| 167 | // timeout(iq); |
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| 168 | // Object o = infoRequests.remove(id); |
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| 169 | // if(o!=null)infoRequests.put(newID,o); |
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| 170 | // else |
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| 171 | // { |
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| 172 | // o=itemRequests.remove(id); |
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| 173 | // if(o!=null)itemRequests.put(newID,o); |
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| 174 | // } |
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| 175 | // } |
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| 176 | // |
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| 177 | // public void browseError(String id,JID jid) |
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| 178 | // { |
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| 179 | // TimerTask t =(TimerTask) timeoutTimers.remove(id); |
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| 180 | // if(t!=null)t.cancel(); |
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| 181 | Object o = infoRequests.remove(id); |
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| 182 | //change to disco |
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| 183 | if(o!=null) |
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| 184 | { |
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| 185 | DiscoveryInfo info = new IQBrowse(jid); |
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| 186 | if (infoCache.get(jid) == null) infoCache.put(jid,info);//if nothing in cache cache = empty browse (maby server browse did succeed) |
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| 187 | ((DiscoveryListener)o).discoveryInfoResult(jid,info); |
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| 188 | } |
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| 189 | else |
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| 190 | { |
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| 191 | o = itemRequests.remove(id); |
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| 192 | if(o!=null) |
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| 193 | { |
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| 194 | DiscoveryItem item = new IQBrowse(jid); |
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| 195 | if (itemCache.get(jid) == null) itemCache.put(jid,item);//if nothing in cache cache = empty browse (maby server browse did succeed) |
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| 196 | ((DiscoveryListener)o).discoveryItemResult(jid,item); |
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| 197 | } |
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| 198 | } |
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| 199 | } |
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| 200 | |
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| 201 | public void discoveryInfoResult(JID jid,DiscoveryInfo info){} |
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| 202 | |
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| 203 | public void discoveryItemResult(JID jid,DiscoveryItem item){} |
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| 204 | |
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| 205 | //times out a disco or browse request |
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| 206 | private void timeout(final InfoQuery query) |
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| 207 | { |
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| 208 | TimerTask t = new TimerTask() |
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| 209 | { |
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| 210 | public void run() |
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| 211 | { |
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| 212 | System.out.println("timeout " + query); |
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| 213 | // if(query.getIQExtension() instanceof IQBrowse) |
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| 214 | // {//browse |
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| 215 | // browseError(query.getID(),query.getTo()); |
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| 216 | // } |
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| 217 | // else |
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| 218 | {//disco |
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| 219 | discoError(query.getID(),query.getTo()); |
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| 220 | } |
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| 221 | } |
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| 222 | }; |
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| 223 | timer.schedule(t,60000); |
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| 224 | timeoutTimers.put(query.getID(),t); |
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| 225 | } |
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| 226 | |
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| 227 | //-------------------status events-------------\ |
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| 228 | public void connectionChanged(boolean online) |
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| 229 | {//clear cache when offline |
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| 230 | if (!online) |
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| 231 | { |
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| 232 | infoRequests = new HashMap(10); |
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| 233 | itemRequests = new HashMap(5); |
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| 234 | infoCache = new HashMap(); |
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| 235 | itemCache = new HashMap(); |
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| 236 | } |
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| 237 | } |
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| 238 | |
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| 239 | public void ownPresenceChanged(int show, String status){} |
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| 240 | |
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| 241 | public void exit(){} |
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| 242 | |
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| 243 | } |
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| 244 | /* |
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| 245 | * Overrides for emacs |
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| 246 | * Local variables: |
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| 247 | * tab-width: 4 |
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| 248 | * End: |
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| 249 | */ |
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