Java management extensions (jmx)

Java™ Management Extensions (JMX™) Introduction Tarun Telang, SAP NetWeaver Life Cycle Management , May 2008

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Agenda © SAP 2008 / Page

Introduction ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],© SAP 2008 / Page

JMX Architecture © SAP 2008 / Page JVM ( host 2 ) JVM ( host 1 ) Application MBeans Instrumentation Layer Mbean Server Agent Services Agent Level Protocol Adapters and Connectors Web Browser JMX Compliant Management Application JMX Manager Proprietary Management Application Distributed Services Level

Why JMX? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],© SAP 2008 / Page

MBeans ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],© SAP 2008 / Page

Writing MBean ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],© SAP 2008 / Page // The Memory MBean Interface public interface MemoryMBean { // read public int getUsedMemory(); // write public void setUsedMemory(int size); // read only public int getTotalMemory(); // operation public int calculateFreeMemory(); }

Registering MBean with MBean Server ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],© SAP 2008 / Page

Agent ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],© SAP 2008 / Page

Code Snippets © SAP 2008 / Page © SAP 2008 / Page Connecting to MBean Server Access to an MBean © SAP 2008 / Page Invoking an MBean Operations Query an MBean // Lookup MBeanServer from the JNDI InitialContext initCtx = new InitialContext(); MBeanServer mbs = (MBeanServer) initCtx.lookup("jmx"); ObjectName name; ... mbs.setAttribute(name, new Attribute("Test", "test value")); mbs.invoke( ObjectName name, String operationName, Object [] params, String [] signature) throws InstanceNotFoundException , MBeanException , ReflectionException // the query returns a set of matching ObjectNames Set names = mbs.queryName(pattern, null );

Definition and halftone values of colors © SAP 2008 / Page © SAP 2007 / Page Secondary color palette 100% Primary color palette 100% RGB 68/105/125 RGB 96/127/143 RGB 125/150/164 RGB 152/173/183 RGB 180/195/203 RGB 4/53/123 RGB 240/171/0 RGB 102/102/102 RGB 153/153/153 RGB 204/204/204 RGB 21/101/112 RGB 98/146/147 RGB 127/166/167 RGB 154/185/185 RGB 181/204/204 RGB 85/118/48 RGB 110/138/79 RGB 136/160/111 RGB 162/180/141 RGB 187/200/172 RGB 119/74/57 RGB 140/101/87 RGB 161/129/118 RGB 181/156/147 RGB 201/183/176 RGB 100/68/89 RGB 123/96/114 RGB 147/125/139 RGB 170/152/164 RGB 193/180/189 RGB 73/108/96 RGB 101/129/120 RGB 129/152/144 RGB 156/174/168 RGB 183/196/191 RGB 129/110/44 RGB 148/132/75 RGB 167/154/108 RGB 186/176/139 RGB 205/197/171 RGB 132/76/84 RGB 150/103/110 RGB 169/130/136 RGB 188/157/162 RGB 206/183/187 85% 70% 55% 40% RGB 158/48/57 Tertiary color palette 100% 85% 70% 55% 40% SAP Blue SAP Gold SAP Dark Gray SAP Gray SAP Light Gray Dove Petrol Violet/Mauve Warm Red Warm Green Cool Green Ocher Warning Red Cool Red

Copyright 2008 SAP AG All rights reserved ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],© SAP 2008 / Page

Java management extensions (jmx)

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