获得Glassfish2域名
题
是有可能GlassFish v2中获取当前的域的名称?
我有一个这样的代码:
MemoryMXBean bean = ManagementFactory.getMemoryMXBean();
if (bean != null) {
MemoryUsage usage = bean.getNonHeapMemoryUsage();
int current = (int) ((double) usage.getUsed() / usage.getMax() * 100);
ch.log( Level.INFO, "Memory usage : (non heap) " + usage + " -- "+current+"% (limit:"+THRESHOLD+"%)");
if (current > THRESHOLD) {
//send email
}
当在应用程序服务器是即将碰撞(PermGen space的例外),这将给我们发送电子邮件;但我们已经有了3应用程序服务器上运行,那么该域名将是非常有用的......任何想法?
由于
解决方案 3
你可以这样来做:
MBeanServerConnection serv;
if (hostname != null) {
//remote connection
JMXServiceURL u = new JMXServiceURL("service:jmx:rmi:///jndi/rmi://" + hostname + "/jmxrmi");
String[] credentials = new String[]{"admin", "adminadmin"};
Map<String, String[]> environment = new LinkedHashMap<String, String[]>();
environment.put("jmx.remote.credentials", credentials);
JMXConnector c = JMXConnectorFactory.connect(u, environment);
serv = c.getMBeanServerConnection();
} else {
//local connection
serv = ManagementFactory.getPlatformMBeanServer();
}
//connect to AMX
DomainRoot dRoot = ProxyFactory.getInstance(serv).getDomainRoot(true) ;
//get the Administrative domain name in the Domain Configuration
Map<String, String> map = dRoot.getDomainConfig().getProperties() ;
System.out.println(map.get("administrative.domain.name"));
如果你要连接的本地JVM 与hostname
等于"host:port"
,或null
其他提示
您可以使用 AMX 获得域名。这是一个可以从 DomainRoot .getAppserverDomainName()。
这不是最漂亮的解决方案,但这个技巧的作品:
String dirName = (new File( ".." )).getCanonicalPath();
int dirNameIdx = dirName.lastIndexOf( File.separator );
if (dirNameIdx != -1)
APPSERVER = dirName.substring( dirNameIdx + 1 );
ch.log( Level.INFO, "Memory usage: Appserver name: " + APPSERVER );
}
条件是工作路径是... /域/域/配置
建立在凯文的答案,如果你只是想使用JMX(不依赖于AMX库)刚刚通过getPropertyValue方法上J2EEDomain的MBean。
MBeanServerConnection serv;
//remote connection
JMXServiceURL u = new JMXServiceURL("service:jmx:rmi:///jndi/rmi://" + hostname + "/jmxrmi");
String[] credentials = new String[]{"admin", "adminadmin"};
Map<String, String[]> environment = new LinkedHashMap<String, String[]>();
environment.put("jmx.remote.credentials", credentials);
JMXConnector c = JMXConnectorFactory.connect(u, environment);
serv = c.getMBeanServerConnection();
String domainName = (String) mbsc.invoke(new ObjectName("com.sun.appserv:j2eeType=J2EEDomain,name=com.sun.appserv,category=runtime"), "getPropertyValue", new String[] {"administrative.domain.name"}, new Object[] {"java.lang.String"});
下面是一个非常简单的方法,我们一直在使用
db.getHISTORICAL_MEMORY_USAGE().setDOMAIN( System.getProperty( "domain.name" ) );
db.getHISTORICAL_MEMORY_USAGE().setSERVER( System.getProperty( "com.sun.aas.hostName" ) );
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