| 1 | package dolda.dolcon; |
| 2 | |
| 3 | import java.util.*; |
| 4 | import dolda.dolcon.protocol.*; |
| 5 | |
| 6 | class HubManager implements NotifyListener { |
| 7 | private Set<HubListener> hubls = new HashSet<HubListener>(); |
| 8 | private Set<HubListener> delayed = new HashSet<HubListener>(); |
| 9 | private Map<Integer, Hub> hubs = new TreeMap<Integer, Hub>(); |
| 10 | private String state = "none"; |
| 11 | private Session sess; |
| 12 | |
| 13 | HubManager(Session sess) { |
| 14 | this.sess = sess; |
| 15 | } |
| 16 | |
| 17 | private int atoi(String a) { |
| 18 | return(Integer.parseInt(a)); |
| 19 | } |
| 20 | |
| 21 | private void addall(final HubListener ls) { |
| 22 | for(final Hub hub : hubs.values()) { |
| 23 | sess.dispatch(new Runnable() { |
| 24 | public void run() { |
| 25 | ls.added(hub); |
| 26 | } |
| 27 | }); |
| 28 | } |
| 29 | } |
| 30 | |
| 31 | private void fetchhubs() { |
| 32 | synchronized(this) { |
| 33 | if(state != "none") |
| 34 | return; |
| 35 | state = "fetch"; |
| 36 | } |
| 37 | Command cmd = new Command("lsnodes"); |
| 38 | cmd.new Listener() { |
| 39 | public void done(Response r) { |
| 40 | if(r.code != 200) |
| 41 | return; |
| 42 | for(List<String> line : r.lines) { |
| 43 | Hub h = new Hub(atoi(line.get(0)), line.get(1)); |
| 44 | h.name = line.get(2); |
| 45 | h.numpeers = atoi(line.get(3)); |
| 46 | h.state = new String[] {"syn", "hs", "est", "dead"}[atoi(line.get(4))]; |
| 47 | h.gid = line.get(5); |
| 48 | hubs.put(h.id, h); |
| 49 | } |
| 50 | synchronized(HubManager.this) { |
| 51 | state = ""; |
| 52 | HubManager.this.notifyAll(); |
| 53 | for(HubListener ls : delayed) { |
| 54 | addall(ls); |
| 55 | } |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | public void error(Exception e) { |
| 60 | synchronized(HubManager.this) { |
| 61 | state = "closed"; |
| 62 | } |
| 63 | } |
| 64 | }; |
| 65 | sess.conn.qcmd(new Command("notify", "fn:act", "on"), cmd); |
| 66 | sess.conn.addNotifyListener(this); |
| 67 | } |
| 68 | |
| 69 | public Collection<Hub> gethubs() throws InterruptedException { |
| 70 | fetchhubs(); |
| 71 | synchronized(this) { |
| 72 | while((state != "") && (state != "closed")) |
| 73 | wait(); |
| 74 | } |
| 75 | Collection<Hub> ret = new LinkedList<Hub>(); |
| 76 | synchronized(hubs) { |
| 77 | for(Hub h : hubs.values()) |
| 78 | ret.add(h.copy()); |
| 79 | } |
| 80 | return(ret); |
| 81 | } |
| 82 | |
| 83 | public void addls(HubListener hl, boolean addexisting) { |
| 84 | fetchhubs(); |
| 85 | synchronized(hubls) { |
| 86 | hubls.add(hl); |
| 87 | } |
| 88 | if(addexisting) { |
| 89 | synchronized(this) { |
| 90 | if(state != "") |
| 91 | delayed.add(hl); |
| 92 | else |
| 93 | addall(hl); |
| 94 | } |
| 95 | } |
| 96 | } |
| 97 | |
| 98 | public void rmls(HubListener hl) { |
| 99 | synchronized(sess) { |
| 100 | synchronized(hubls) { |
| 101 | hubls.remove(hl); |
| 102 | if(hubls.isEmpty()) { |
| 103 | synchronized(hubs) { |
| 104 | hubs.clear(); |
| 105 | } |
| 106 | state = "closed"; |
| 107 | sess.conn.removeNotifyListener(this); |
| 108 | sess.hm = null; |
| 109 | } |
| 110 | } |
| 111 | } |
| 112 | } |
| 113 | |
| 114 | public void notified(Response resp) { |
| 115 | synchronized(this) { |
| 116 | if(state != "") |
| 117 | return; |
| 118 | } |
| 119 | if(resp.code == 604) { |
| 120 | final Hub h = new Hub(atoi(resp.token(0, 0)), resp.token(0, 1)); |
| 121 | synchronized(hubs) { |
| 122 | hubs.put(h.id, h); |
| 123 | } |
| 124 | sess.dispatch(new Runnable() { |
| 125 | public void run() { |
| 126 | synchronized(hubls) { |
| 127 | for(HubListener ls : hubls) |
| 128 | ls.added(h); |
| 129 | } |
| 130 | } |
| 131 | }); |
| 132 | } else if(resp.code == 603) { |
| 133 | final Hub h; |
| 134 | synchronized(hubs) { |
| 135 | h = hubs.remove(atoi(resp.token(0, 0))); |
| 136 | } |
| 137 | sess.dispatch(new Runnable() { |
| 138 | public void run() { |
| 139 | synchronized(hubls) { |
| 140 | for(HubListener ls : hubls) |
| 141 | ls.removed(h); |
| 142 | } |
| 143 | } |
| 144 | }); |
| 145 | } else if(resp.code == 601) { |
| 146 | final Hub h; |
| 147 | final String state = new String[] {"syn", "hs", "est", "dead"}[atoi(resp.token(0, 1))]; |
| 148 | synchronized(hubs) { |
| 149 | h = hubs.get(atoi(resp.token(0, 0))); |
| 150 | } |
| 151 | h.state = state; |
| 152 | sess.dispatch(new Runnable() { |
| 153 | public void run() { |
| 154 | synchronized(h.ls) { |
| 155 | for(Hub.Listener ls : h.ls) { |
| 156 | ls.chState(h); |
| 157 | } |
| 158 | } |
| 159 | } |
| 160 | }); |
| 161 | } else if(resp.code == 602) { |
| 162 | final Hub h; |
| 163 | final String name = resp.token(0, 1); |
| 164 | synchronized(hubs) { |
| 165 | h = hubs.get(atoi(resp.token(0, 0))); |
| 166 | } |
| 167 | h.name = name; |
| 168 | sess.dispatch(new Runnable() { |
| 169 | public void run() { |
| 170 | synchronized(h.ls) { |
| 171 | for(Hub.Listener ls : h.ls) { |
| 172 | ls.chName(h); |
| 173 | } |
| 174 | } |
| 175 | } |
| 176 | }); |
| 177 | } else if(resp.code == 605) { |
| 178 | final Hub h; |
| 179 | final int np = atoi(resp.token(0, 1)); |
| 180 | synchronized(hubs) { |
| 181 | h = hubs.get(atoi(resp.token(0, 0))); |
| 182 | } |
| 183 | h.numpeers = np; |
| 184 | sess.dispatch(new Runnable() { |
| 185 | public void run() { |
| 186 | synchronized(h.ls) { |
| 187 | for(Hub.Listener ls : h.ls) { |
| 188 | ls.chNumPeers(h); |
| 189 | } |
| 190 | } |
| 191 | } |
| 192 | }); |
| 193 | } |
| 194 | } |
| 195 | } |