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org.apache.jcs.auxiliary.lateral.socket.tcp.discovery.UDPDiscoveryManager |
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1 | package org.apache.jcs.auxiliary.lateral.socket.tcp.discovery; |
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2 | ||
3 | /* |
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4 | * Licensed to the Apache Software Foundation (ASF) under one |
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5 | * or more contributor license agreements. See the NOTICE file |
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6 | * distributed with this work for additional information |
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7 | * regarding copyright ownership. The ASF licenses this file |
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8 | * to you under the Apache License, Version 2.0 (the |
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9 | * "License"); you may not use this file except in compliance |
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10 | * with the License. You may obtain a copy of the License at |
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11 | * |
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12 | * http://www.apache.org/licenses/LICENSE-2.0 |
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13 | * |
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14 | * Unless required by applicable law or agreed to in writing, |
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15 | * software distributed under the License is distributed on an |
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16 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
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17 | * KIND, either express or implied. See the License for the |
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18 | * specific language governing permissions and limitations |
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19 | * under the License. |
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20 | */ |
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21 | ||
22 | import java.util.HashMap; |
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23 | import java.util.Map; |
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24 | ||
25 | import org.apache.commons.logging.Log; |
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26 | import org.apache.commons.logging.LogFactory; |
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27 | import org.apache.jcs.auxiliary.lateral.socket.tcp.behavior.ITCPLateralCacheAttributes; |
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28 | import org.apache.jcs.engine.behavior.ICompositeCacheManager; |
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29 | ||
30 | /** |
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31 | * This manages UDPDiscovery Services. We should end up with one service per |
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32 | * Lateral Cache Manager Instance. One service works for multiple regions. We |
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33 | * don't want a connection for each region. |
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34 | * |
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35 | * @author Aaron Smuts |
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36 | * |
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37 | */ |
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38 | public class UDPDiscoveryManager |
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39 | { |
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40 | 26 | private final static Log log = LogFactory.getLog( UDPDiscoveryManager.class ); |
41 | ||
42 | 13 | private static UDPDiscoveryManager INSTANCE = new UDPDiscoveryManager(); |
43 | ||
44 | 13 | private Map services = new HashMap(); |
45 | ||
46 | private UDPDiscoveryManager() |
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47 | 13 | { |
48 | // noopt |
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49 | 13 | } |
50 | ||
51 | /** |
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52 | * Singelton |
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53 | * |
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54 | * @return UDPDiscoveryManager |
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55 | */ |
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56 | public static UDPDiscoveryManager getInstance() |
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57 | { |
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58 | 26 | return INSTANCE; |
59 | } |
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60 | ||
61 | /** |
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62 | * Returns the UDP Discovery service associated with this instance. |
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63 | * |
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64 | * @param lca |
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65 | * ITCPLateralCacheAttributes |
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66 | * @param cacheMgr |
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67 | * @return |
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68 | */ |
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69 | public synchronized UDPDiscoveryService getService( ITCPLateralCacheAttributes lca, ICompositeCacheManager cacheMgr ) |
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70 | { |
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71 | 26 | UDPDiscoveryService service = getService( lca.getUdpDiscoveryAddr(), lca.getUdpDiscoveryPort(), lca.getTcpListenerPort(), cacheMgr ); |
72 | ||
73 | // TODO find a way to remote these attributes from the service, the manager needs it on disocvery. |
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74 | 26 | service.setTcpLateralCacheAttributes( lca ); |
75 | 26 | return service; |
76 | } |
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77 | ||
78 | /** |
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79 | * Creates a service for the address and port if one doesn't exist already. |
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80 | * <p> |
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81 | * TODO we may need to key this using the listener port too |
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82 | * |
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83 | * @param discoveryAddress |
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84 | * @param discoveryPort |
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85 | * @param servicePort |
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86 | * @param cacheMgr |
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87 | * @return |
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88 | */ |
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89 | public synchronized UDPDiscoveryService getService( String discoveryAddress, int discoveryPort, class="keyword">int servicePort, |
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90 | ICompositeCacheManager cacheMgr ) |
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91 | { |
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92 | 26 | String key = discoveryAddress + ":" + discoveryPort; |
93 | ||
94 | 26 | UDPDiscoveryService service = (UDPDiscoveryService) services.get( key ); |
95 | 26 | if ( service == null ) |
96 | { |
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97 | 13 | if ( log.isInfoEnabled() ) |
98 | { |
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99 | 13 | log.info( "Creating service for address:port [" + key + "]" ); |
100 | } |
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101 | ||
102 | 13 | service = new UDPDiscoveryService( discoveryAddress, discoveryPort, servicePort, cacheMgr ); |
103 | 13 | services.put( key, service ); |
104 | } |
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105 | ||
106 | 26 | if ( log.isDebugEnabled() ) |
107 | { |
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108 | 0 | log.debug( "Returning service [" + service + "] for key [" + key + "]" ); |
109 | } |
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110 | ||
111 | 26 | return service; |
112 | ||
113 | } |
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114 | ||
115 | } |
This report is generated by jcoverage, Maven and Maven JCoverage Plugin. |