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30 //==============================================================================
32 Java Manageability Programming Interface (JMPI)
33 -----------------------------------------------
35 JMPI is a bridge between clients and providers written in Java and the Open
38 More information on JMPI's status can be found at
39 http://www.openpegasus.org/page.tpl?ggid=799
45 In order to build the JMPI support a few environment variables have to used.
46 The following script has been proven useful for setting up the build and
47 execution environment. You might need to adjust this to your system layout.
49 An example setJPeg script file:
50 export PEGASUS_HOME=`pwd`
51 export PEGASUS_ROOT=${PEGASUS_HOME}
52 export PEGASUS_PLATFORM=LINUX_IX86_GNU
53 export PEGASUS_ENABLE_JMPI_PROVIDER_MANAGER=true
54 export PEGASUS_JVM=sun
55 export JAVA_SDK=/usr/java/j2sdk1.4.2_08
56 export JAVA_SDKINC=${JAVA_SDK}/include
57 export PEGASUS_JAVA_ARCH=i386
58 export PEGASUS_JAVA_TYPE=client
59 export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:${JAVA_SDK}/jre/lib/${PEGASUS_JAVA_ARCH}/server:${JAVA_SDK}/jre/lib/${PEGASUS_JAVA_ARCH}/native_threads:${JAVA_SDK}/jre/lib/${PEGASUS_JAVA_ARCH}
60 export PATH=${JAVA_SDK}/bin/:${PEGASUS_HOME}/bin:${PATH}
61 export CLASSPATH=${CLASSPATH}:${PEGASUS_HOME}/lib/JMPIImpl.jar
63 Lets walk through an example for the mandatory environment variables.
65 (1) The first tells Pegasus to build the Java provider manager:
66 export PEGASUS_ENABLE_JMPI_PROVIDER_MANAGER=true
68 (2) The second says which JRE to use. The choices are as follows:
69 export PEGASUS_JVM=gcj Gnu's jvm (ex: gcj (GCC) 4.1.1 20061011 (Red Hat 4.1.1-30))
70 export PEGASUS_JVM=sun Sun's jvm (ex: j2sdk1.4.2_07)
71 export PEGASUS_JVM=ibm IBM's jvm (ex: IBMJava2-142)
72 export PEGASUS_JVM=ibm64 IBM's jvm for 64 bit machine.
73 export PEGASUS_JVM=bea Suse's IBM jvm (ex: BEAJava2-1.4.2)
74 So, pick one and export that variable to the environment. For example:
75 export PEGASUS_JVM=sun
76 NOTE: As the primary maintainer of the JMPI code, IBM developers have
77 independently tested (and routinely test) JMPI with the following JREs.
78 The results of these tests are not yet reported on the OpenPegasus Nightly
79 Build and Test Status page.
80 - LINUX_IX86_GNU (Fedora Core 5), Sun JVM 1.4.2_08
81 - LINUX_IX86_GNU (Fedora Core 5), Gcc JVM 4.1.1 20060525
82 - LINUX_IX86_GNU (RHEL 5.1), Gcc JVM 4.1.2 20070626
83 - LINUX_X86_64_GNU (SLES 9 SP3), Sun JVM 1.4.2_15
84 - LINUX_X86_64_GNU (RHEL 5.0), IBM Classic VM (build 1.4.2, J2RE 1.4.2 IBM build cxz64142-20070317 (SR8) (JIT disabled))
85 - LINUX_ZSERIES64_GNU (RHEL 5.0), IBM J9SE VM (build 2.2, J2RE 1.4.2 IBM J9 2.2 Linux amd64-64
86 - ZOS_ZSERIES_IBM (z/OS 1.7), J2RE 1.4.2 IBM z/OS Persistent Reusable VM build cm142-20060824 (SR6)
87 - ZOS_ZSERIES_IBM (z/OS 1.8), J2RE 1.4.2 IBM z/OS Persistent Reusable VM build cm142-20060824 (SR6)
88 - ZOS_ZSERIES_IBM (z/OS 1.9), J2RE 1.4.2 IBM z/OS Persistent Reusable VM build cm142-20060824 (SR6)
89 - WIN32_IX86_MSVC (Microsoft Windows XP Professional), Sun JVM 1.6.0_02
91 (3, 4) The third and fourth say where the JRE libraries and header files are
92 located. This may or may not be necessary depending upon the compiler's
93 default search paths. Since in this example we are using Sun's JRE, we
95 export JAVA_SDK=/usr/java/j2sdk1.4.2_08
96 export JAVA_SDKINC=${JAVA_SDK}/include
98 (5) The fifth variable defines the Java architecture of the JMV:
99 export PEGASUS_JAVA_ARCH=i386
101 (6) The sixth variable defines which version of the jvm library to link to
102 (the client or the server):
103 export PEGASUS_JAVA_TYPE=client
105 As a test to make sure your environment variables are correct in this
107 ls ${JAVA_SDK}/jre/lib/${PEGASUS_JAVA_ARCH}/${PEGASUS_JAVA_TYPE}
108 should show you libjvm.so for Sun's JRE.
110 (7) The seventh may be necessary to tell the linker where to load the JRE
112 export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:${JAVA_SDK}/jre/lib/${PEGASUS_JAVA_ARCH}/server:${JAVA_SDK}/jre/lib/${PEGASUS_JAVA_ARCH}/native_threads:${JAVA_SDK}/jre/lib/${PEGASUS_JAVA_ARCH}
114 (8) The eighth one may be necessary to get the JVM's executable files into the
116 export PATH=${JAVA_SDK}/bin/:${PEGASUS_HOME}/bin:${PATH}
118 (9) The nineth tells the JRE to include JMPI's Java classes:
119 export CLASSPATH=${CLASSPATH}:${PEGASUS_HOME}/lib/JMPIImpl.jar
121 There are a couple of optional environment variables to determine how the JRE
122 is initialized. These are as follows (the variable name and what JRE option
123 that it corresponds to):
125 PEGASUS_JMPI_MAX_HEAP -Xmx
126 PEGASUS_JMPI_INITIAL_HEAP -Xms
127 PEGASUS_JMPI_JAVA_THREAD_STACK_SIZE -Xss
129 So, for example, you would perform the following if you want to change the
130 maximum heap size to 128 megabytes:
132 export PEGASUS_JMPI_MAX_HEAP=128m
134 There is a new optional environment variable that tells the JVM to output more
135 debugging information. The variable name is called PEGASUS_JMPI_VERBOSE.
136 An example usage is as follows:
138 export PEGASUS_JMPI_VERBOSE="jni,class"
140 This will tell the JVM to output debug information on the JNI layer and class
143 When using this script, place a copy of this script above your PEGASUS_HOME
144 directory, "cd" to PEGASUS_HOME, and issue ". ./setJPeg". Then do a normal
151 This installment has the following restrictions:
153 Unloading of idle providers is not supported and Java will increase the
156 Java 1.5 is not currently supported.
158 Gcj on 31 bit machines is only supported using gcc version 4.1.1 or later.
159 Gcj on 64 bit machines is not supported. Bugs 5913, 5921, and 5963 have
160 been written to address that issue. Instead, you should use the Sun ported
161 JVM from the Blackdown project located at www.blackdown.org.
164 Level of test coverage
165 ----------------------
167 All interfaces to a provider have a sample provider written for them and are
168 part of the testcases. All main CIM java classes have testcases written for
175 Java documentation needs to be written for the classes and methods within JMPI.
181 This installment has a set of tests located under
182 src/Pegasus/ProviderManager2/JMPI/org/pegasus/jmpi/tests/
186 These tests have been modelled after wetest/static. (For the tests, we
187 had to modify "diff" to "diff -w", why that is needed I do not
192 These tests implement the many variants of provider interfaces.
196 These tests test out the client code and various Java classes.
202 Tests are run with the following process.
204 If the repository has not already been built then issue the following:
206 cd to ${PEGASUS_HOME}/src/Pegasus/ProviderManager2/JMPI/
207 Issue "make repository"
209 This will load a schema to the repository and register the provider.
213 cd to ${PEGASUS_HOME}/src/Pegasus/ProviderManager2/JMPI/
214 Issue "find -name \*.rsp -exec rm {} \;" to clean up *.rsp files from failed tests.
215 Issue "make poststarttests"
221 There are four sample providers located in
222 ${PEGASUS_HOME}/src/Pegasus/ProviderManager2/JMPI/org/pegasus/jmpi/tests/Providers/
226 This provider implements an association provider.
230 This provider implements an instance provider.
234 This provider implements an indication provider.
238 This provider implements a property provider.
240 There is also sample Java code that deals with CIM classes that is located in
241 ${PEGASUS_HOME}/src/Pegasus/ProviderManager2/JMPI/org/pegasus/jmpi/tests/Client/
244 Provider Registration
245 ---------------------
247 JMPI providers are registered as usual. The Location property in
248 PG_ProviderModule has a special format. The format is:
249 <jar-file-name>:<provider-class-name>
251 JMPI providers now fall into two groups.
253 (1) Legacy providers use:
254 InterfaceType = "JMPI"
255 and use one of the 3 following based on existing JMPI samples:
256 InterfaceVersion = "1.0.0";
257 InterfaceVersion = "2.0.0";
258 InterfaceVersion = "2.2.0";
259 Note that there is no difference in behavior in the three versions.
261 instance of PG_ProviderModule
263 Name = "JMPIInstanceProviderModule";
264 Location = "JMPIInstanceProvider.jar:Instances/JMPIInstanceProvider";
265 Vendor = "OpenPegasus";
267 InterfaceType = "JMPI";
268 InterfaceVersion = "1.0.0";
271 (2) New style providers use:
272 InterfaceType = "JMPIExperimental"
274 InterfaceVersion = "0.0.1";
276 instance of PG_ProviderModule
278 Name = "JMPIExpInstanceProviderModule";
279 Location = "JMPIExpInstanceProvider.jar:Instances/JMPIExpInstanceProvider";
280 Vendor = "OpenPegasus";
282 InterfaceType = "JMPIExperimental";
283 InterfaceVersion = "0.0.1";
290 Use normal Pegasus bugzilla procedures to report malfunctions.