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1
16 package org.outerj.daisy.repository.serverimpl;
17
18 import java.util.Date  ;
19
20 import javax.management.MBeanServer ;
21 import javax.management.ObjectName ;
22
23 import org.apache.avalon.framework.activity.Initializable;
24 import org.apache.avalon.framework.service.ServiceException;
25 import org.apache.avalon.framework.service.ServiceManager;
26 import org.apache.avalon.framework.service.Serviceable;
27 import org.outerj.daisy.repository.RepositoryManager;
28
29
32
33 public class SystemInfoImpl implements SystemInfoImplMBean, Serviceable, Initializable {
34 private final long systemStartTime;
35
36 private String serverVersion;
37
38 private ServiceManager serviceManager;
39
40 public SystemInfoImpl() {
41 systemStartTime = System.currentTimeMillis();
42 }
43
44
48 public void service(ServiceManager serviceManager) throws ServiceException {
49 this.serviceManager = serviceManager;
50 }
51
52 public void initialize() throws Exception {
53 RepositoryManager repositoryManager = (RepositoryManager) serviceManager.lookup("repository-manager");
54 try {
55 serverVersion = repositoryManager.getRepositoryServerVersion();
56 } finally {
57 serviceManager.release(repositoryManager);
58 }
59
60 MBeanServer mbeanServer = (MBeanServer ) serviceManager.lookup("mbeanserver");
61 try {
62 mbeanServer.registerMBean(this, new ObjectName ("Daisy:name=SystemInfo"));
63 } finally {
64 serviceManager.release(mbeanServer);
65 }
66 }
67
68 public long getFreeVmMemory() {
69 return Runtime.getRuntime().freeMemory();
70 }
71
72 public String getUpTime() {
73 long timeDifference = System.currentTimeMillis() - systemStartTime;
75
76 long days = timeDifference / (1000 * 3600 * 24);
77 timeDifference %= 1000 * 3600 * 24;
78 long hours = timeDifference / (1000 * 3600);
79 timeDifference %= 1000 * 3600;
80 long minutes = timeDifference / (1000 * 60);
81 timeDifference %= 1000 * 60;
82 long seconds = timeDifference / 1000;
83
84 return "The system is up for " + days + " days, " + hours + " hours, " + minutes + " minutes, " + seconds + " seconds.";
85 }
86
87 public void triggerGarbageCollector() {
88 System.gc();
89 }
90
91 public Date getStartTime() {
92 return new Date (systemStartTime);
93 }
94
95 public long getMaxVmMemory() {
96 return Runtime.getRuntime().maxMemory();
97 }
98
99 public long getTotalVmMemory() {
100 return Runtime.getRuntime().totalMemory();
101 }
102
103 public int getAvailableProcessors() {
104 return Runtime.getRuntime().availableProcessors();
105 }
106
107 public String getVmMemoryFormatted() {
108 return formatSizeInMb(getFreeVmMemory()) + " of " + formatSizeInMb(getTotalVmMemory()) + " (max " + formatSizeInMb(getMaxVmMemory()) + ")";
109 }
110
111 private String formatSizeInMb(long sizeInKb) {
112 long sizeInMb = sizeInKb / (1024 * 1024);
113 return sizeInMb + "M";
114 }
115
116 public String getFileEncoding() {
117 return System.getProperty("file.encoding");
118 }
119
120 public String getServerVersion() {
121 return serverVersion;
122 }
123 }
124 |
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