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9
10 package org.mule.util.store;
11
12 import org.mule.api.MuleContext;
13 import org.mule.api.context.MuleContextAware;
14 import org.mule.api.lifecycle.Disposable;
15 import org.mule.api.lifecycle.Initialisable;
16 import org.mule.api.lifecycle.InitialisationException;
17 import org.mule.api.store.ObjectStore;
18 import org.mule.config.i18n.CoreMessages;
19 import org.mule.util.UUID;
20 import org.mule.util.concurrent.DaemonThreadFactory;
21
22 import java.io.Serializable;
23 import java.util.concurrent.ScheduledThreadPoolExecutor;
24 import java.util.concurrent.TimeUnit;
25
26 import org.apache.commons.logging.Log;
27 import org.apache.commons.logging.LogFactory;
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31
32 public abstract class AbstractMonitoredObjectStore<T extends Serializable>
33 implements ObjectStore<T>, Runnable, MuleContextAware, Initialisable, Disposable
34 {
35 protected final Log logger = LogFactory.getLog(this.getClass());
36
37 protected MuleContext context;
38 protected ScheduledThreadPoolExecutor scheduler;
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42
43
44 protected int maxEntries = 4000;
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48
49
50 protected int entryTTL = -1;
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58 protected int expirationInterval = 1000;
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63 protected String name = null;
64
65 public void initialise() throws InitialisationException
66 {
67 if (name == null)
68 {
69 name = UUID.getUUID();
70 }
71
72 if (expirationInterval <= 0)
73 {
74 throw new IllegalArgumentException(CoreMessages.propertyHasInvalidValue("expirationInterval",
75 new Integer(expirationInterval)).toString());
76 }
77
78 if (scheduler == null)
79 {
80 this.scheduler = new ScheduledThreadPoolExecutor(1);
81 scheduler.setThreadFactory(new DaemonThreadFactory(name + "-Monitor", this.getClass().getClassLoader()));
82 scheduler.scheduleWithFixedDelay(this, 0, expirationInterval, TimeUnit.MILLISECONDS);
83 }
84 }
85
86 public final void run()
87 {
88 if (context == null || context.isPrimaryPollingInstance())
89 {
90 expire();
91 }
92 }
93
94 public void dispose()
95 {
96 if (scheduler != null)
97 {
98 scheduler.shutdown();
99 }
100 }
101
102 public void setEntryTTL(int entryTTL)
103 {
104 this.entryTTL = entryTTL;
105 }
106
107 public void setExpirationInterval(int expirationInterval)
108 {
109 this.expirationInterval = expirationInterval;
110 }
111
112 public void setMaxEntries(int maxEntries)
113 {
114 this.maxEntries = maxEntries;
115 }
116
117 public void setScheduler(ScheduledThreadPoolExecutor scheduler)
118 {
119 this.scheduler = scheduler;
120 }
121
122 public void setName(String id)
123 {
124 this.name = id;
125 }
126
127 public void setMuleContext(MuleContext context)
128 {
129 this.context = context;
130 }
131
132 public int getEntryTTL()
133 {
134 return entryTTL;
135 }
136
137 public int getExpirationInterval()
138 {
139 return expirationInterval;
140 }
141
142 public int getMaxEntries()
143 {
144 return maxEntries;
145 }
146
147 public String getName()
148 {
149 return name;
150 }
151
152 public ScheduledThreadPoolExecutor getScheduler()
153 {
154 return scheduler;
155 }
156
157 protected abstract void expire();
158 }