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18 kumpf 1.2
19 <hr>
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20 s.soni 1.1 <p align="center"><small><font face="Helvetica, Arial, sans-serif"><b><font
21 size="4"><small>Pegasus Enhancement Proposal (PEP)</small></font></b></font></small></p>
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22 kumpf 1.2
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23 s.soni 1.1 <p><small><font face="Helvetica, Arial, sans-serif"><b>PEP #:</b> 121</font></small></p>
24 <small><font face="Helvetica, Arial, sans-serif"><b>Title: </b>Test
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25 kumpf 1.2 Enhancements for Pegasus </font></small>
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26 s.soni 1.1 <p><small><font face="Helvetica, Arial, sans-serif" color="#0000ff"></font></small></p>
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27 kumpf 1.2
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28 s.soni 1.1 <p><small><font face="Helvetica, Arial, sans-serif"><b>Version: </b>1.3 </font></small></p>
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29 kumpf 1.2
30 <p><small><font face="Helvetica, Arial, sans-serif"><b>Created:</b> 18 Dec.
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31 s.soni 1.1 2003</font><font face="Helvetica, Arial, sans-serif" color="#0000ff"></font></small></p>
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32 kumpf 1.2
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33 s.soni 1.1 <p><small><font face="Helvetica, Arial, sans-serif"><b>Authors: Subodh Soni</b></font></small></p>
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34 kumpf 1.2
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35 s.soni 1.1 <p><small><font face="Helvetica, Arial, sans-serif"><b>Status: </b>Final<br>
36 </font></small></p>
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37 kumpf 1.2
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38 s.soni 1.1 <p><small><font face="Helvetica, Arial, sans-serif"><br>
39 </font></small></p>
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40 kumpf 1.2
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41 s.soni 1.1 <p><small><font face="Helvetica, Arial, sans-serif"><b>Version History:</b></font></small></p>
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42 kumpf 1.2
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43 s.soni 1.1 <table border="1" cellspacing="1" bordercolordark="#666666"
44 bordercolorlight="#CCCCCC" width="100%" style="font-family: Arial;">
45 <tbody>
46 <tr>
47 <th bgcolor="#cae6ca"><small>Version</small></th>
48 <th bgcolor="#cae6ca"><small>Date</small></th>
49 <th bgcolor="#cae6ca"><small>Author</small></th>
50 <th bgcolor="#cae6ca"><small>Change Description</small></th>
51 </tr>
52 <tr>
53 <td align="center"><small>1.0</small></td>
54 <td align="center"><small>18 Dec 2003</small></td>
55 <td align="center"><small>Subodh Soni</small></td>
56 <td><small>Initial Submission</small></td>
57 </tr>
58 <tr>
59 <td align="center"><small>1.1</small></td>
60 <td align="center"><small>13 Jan 2004</small></td>
61 <td align="center"><small>Subodh Soni</small></td>
62 <td><small>Minor editorial changes based on comments by David
63 Dillard</small> </td>
64 s.soni 1.1 </tr>
65 <tr>
66 <td valign="top" align="center"><small>1.2</small><br>
67 </td>
68 <td valign="top" align="center"><small>02 Feb 2004</small><br>
69 </td>
70 <td valign="top" align="center"><small>Subodh Soni</small><br>
71 </td>
72 <td valign="top" align="left"><small>Priorities of the proposed
73 test enhancements added.</small><br>
74 </td>
75 </tr>
76 <tr>
77 <td valign="top" align="center"><small>1.3</small><br>
78 </td>
79 <td valign="top" align="center"><small>05 Feb 2004</small><br>
80 </td>
81 <td valign="top" align="center"><small>Subodh Soni</small><br>
82 </td>
83 <td valign="top"><small>Final Version uploaded to "Recent Documents"</small><br>
84 </td>
85 s.soni 1.1 </tr>
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86 kumpf 1.2
87 </tbody>
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88 s.soni 1.1 </table>
89 <br>
90 <br>
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91 kumpf 1.2
92 <hr>
93 <p><small><font face="Helvetica, Arial, sans-serif"><b>Abstract:</b> This
94 PEP aims to deliver test enhancements for Pegasus CIMOM. These enhancements
95 introduce some specific conditions in the CIMOM and check its behavior.
96 These conditions or test scenarios are the ones that are not tested in
97 the current implementation of Pegasus and consists of some of the real-life
98 issues faced by the developers and users (working with various configurations
99 and machine setups) of Pegasus . The different test cases are present in
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100 s.soni 1.1 the form of either sample providers or shell scripts and are independent of
101 the existing test programs present in the Pegasus CVS tree.The complete package
102 containing these test cases can be easily integrated with the existing source
103 tree and no special knowledge is required to execute these tests.</font></small></p>
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104 kumpf 1.2
105 <hr>
106 <h2><small><font face="Helvetica, Arial, sans-serif" color="#000000">Definition
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107 s.soni 1.1 of the Problem</font></small></h2>
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108 kumpf 1.2
109 <p><small><font face="Helvetica, Arial, sans-serif">There are many scenarios
110 where the cimom behavior is not known as of the current pegasus stable
111 source tree. This PEP is an attempt to identify some of these scenarios
112 and develop test programs to check the behavior exhibited by pegasus when
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113 s.soni 1.1 subjected to these conditions.<br>
114 </font></small></p>
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115 kumpf 1.2
116 <p><small><font face="Helvetica, Arial, sans-serif"> The problems are defined
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117 s.soni 1.1 below: [These are various situations in which the cimserver behavior is
118 not known/ or inconsistent]<br>
119 </font></small></p>
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120 kumpf 1.2
121 <p><small><font face="Helvetica, Arial, sans-serif">1. Single provider responsible
122 for loading multiple classes and running multiple clients simultaneously
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123 s.soni 1.1 using the classes loaded by this provider.<br>
124 </font><font face="Helvetica, Arial, sans-serif"
125 color="#ff6666"></font><font face="Helvetica, Arial, sans-serif"><br>
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126 kumpf 1.2 2. Behavior of Pegasus is different depending on whether the exception
127 thrown is a CIMException, Pegasus::Exception, or "unknown" exception such
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128 s.soni 1.1 as int. exceptions on initialize, after processing(), etc.</font></small></p>
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129 kumpf 1.2
130 <p><small><font face="Helvetica, Arial, sans-serif">3. What happens if the
131 provider method does a fork() and creates subprocess from within itself.
132 What are the handles (or file descriptors) it inherits from the parent.
133 These conditions occur frequently when an actual provider interacts with
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134 s.soni 1.1 the system through various system calls.<br>
135 </font></small></p>
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136 kumpf 1.2
137 <p><small><font face="Helvetica, Arial, sans-serif">4. What is the behavior
138 on linux when providers manipulate signals from within their methods.
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139 s.soni 1.1 How is threading and signal handling taken care by pegasus ?<br>
140 </font></small></p>
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141 kumpf 1.2
142 <p><small><font face="Helvetica, Arial, sans-serif">5. Checking for timing-related
143 issues in the Pegasus common code. Memory testing involving significant
144 exercising of multiple providers with strange timings, and clients timed
145 to both stress provider subsystems and pause long enough to exercise the
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146 s.soni 1.1 provider unload logic.<br>
147 </font></small></p>
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148 kumpf 1.2
149 <p><small><font face="Helvetica, Arial, sans-serif">6. The provider calling
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150 s.soni 1.1 the CIMOMHandle sets a UserIdentity into the OperationContext. It is possible
151 for a provider to call the CIMOMHandle with a user name that is different
152 than the end-user on the client who sent in the original request. For
153 example, a provider could set "root" into the UserIdentity, effectively
154 promoting itself to root authority when calling the CIMOMHandle.<br>
155 </font></small></p>
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156 kumpf 1.2
157 <p><small><font face="Helvetica, Arial, sans-serif">7. Testing the behavior
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158 s.soni 1.1 of Pegasus when the classes it has implemented return a large amount of
159 data. (</font><font face="Helvetica, Arial, sans-serif"
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160 kumpf 1.2 color="#000000">For example: a sample provider in which the enumInstances
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161 s.soni 1.1 returns 10000 instances of the class implemented by the provider.<br>
162 </font></small></p>
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163 kumpf 1.2
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164 s.soni 1.1 <p><small><font face="Helvetica, Arial, sans-serif" color="#000000">8. </font></small><small><font
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165 kumpf 1.2 face="Helvetica, Arial, sans-serif">Checking the XML parser and generator
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166 s.soni 1.1 programs when malformed strings are passed through the providers</font></small><br>
167 </p>
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168 kumpf 1.2
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169 s.soni 1.1 <h2><b><small><small><font face="Helvetica, Arial, sans-serif"
170 color="#000000">Priority</font></small></small></b></h2>
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171 kumpf 1.2
172 <p><small><font face="Helvetica, Arial, sans-serif">The priorities of the
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173 s.soni 1.1 above mentioned test enhancements can be assigned based on the areas in the
174 pegasus code that require more testing. <br>
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175 kumpf 1.2 Based on the above serial nos. the order of the tests can be: <small>2</small>,
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176 s.soni 1.1 <small>1, 5, 7, 3, 4, 8, 6</small></font><font
177 face="Helvetica, Arial, sans-serif"><small></small></font></small><br>
178 </p>
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179 kumpf 1.2
180 <h2><small><font face="Helvetica, Arial, sans-serif" color="#000000">Proposed
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181 s.soni 1.1 Solution</font></small></h2>
182 <small><font face="Helvetica, Arial, sans-serif">An attempt is made
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183 kumpf 1.2 to address the issues/problems/scenarios described in the problem definition
184 above by writing sample providers, test client programs and various shell
185 scripts. The sample providers follow the same structure in all the test
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186 s.soni 1.1 programs. <br>
187 Each sample provider is made atleast of the following files :<br>
188 <br>
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189 kumpf 1.2 </font></small>
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190 s.soni 1.1 <table border="1" width="100%" cellpadding="2" cellspacing="2">
191 <tbody>
192 <tr>
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193 kumpf 1.2 <td><font face="Helvetica, Arial, sans-serif"><small><ProviderName>.cpp</small></font>
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194 s.soni 1.1 </td>
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195 kumpf 1.2 <td><font face="Helvetica, Arial, sans-serif"><small> Implementing
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196 s.soni 1.1 the provider methods</small></font></td>
197 </tr>
198 <tr>
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199 kumpf 1.2 <td><small><font face="Helvetica, Arial, sans-serif"><ProviderName>.h</font>
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200 s.soni 1.1 </small></td>
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201 kumpf 1.2 <td><font face="Helvetica, Arial, sans-serif"><small> Header
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202 s.soni 1.1 for the provider implemented</small></font></td>
203 </tr>
204 <tr>
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205 kumpf 1.2 <td><small><font face="Helvetica, Arial, sans-serif"><ProviderNameMain.cpp></font>
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206 s.soni 1.1 </small></td>
207 <td><font face="Helvetica, Arial, sans-serif"><small> The
208 main() function calling the PegasusCreateProvider API</small></font></td>
209 </tr>
210 <tr>
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211 kumpf 1.2 <td><font face="Helvetica, Arial, sans-serif"><small><Provider.mof></small></font>
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212 s.soni 1.1 </td>
213 <td><font face="Helvetica, Arial, sans-serif"><small> The
214 Sample Class MOF</small></font></td>
215 </tr>
216 <tr>
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217 kumpf 1.2 <td><font face="Helvetica, Arial, sans-serif"><small><ProviderR.mof></small></font>
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218 s.soni 1.1 </td>
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219 kumpf 1.2 <td><font face="Helvetica, Arial, sans-serif"><small> Provider
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220 s.soni 1.1 Registration MOF.</small></font></td>
221 </tr>
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222 kumpf 1.2
223 </tbody>
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224 s.soni 1.1 </table>
225 <small><font face="Helvetica, Arial, sans-serif"><br>
226 The solution consists of test providers and test programs for the
227 following specific conditions: [some parts of the actual code developed
228 are also provided with the proposed solution for each of the specific
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229 kumpf 1.2 scenarios]</font></small>
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230 s.soni 1.1 <h3><small><font face="Helvetica, Arial, sans-serif">a.) Single Provider implementing
231 Multiple Classes<br>
232 </font></small></h3>
233 <small><font face="Helvetica, Arial, sans-serif"
234 color="#000000">This test program containing a sample provider is used
235 to test the provider for loading multiple classes with various combinations
236 of the test client to fetch the classes.</font><font
237 face="Helvetica, Arial, sans-serif"> Various complex client loading scenarios
238 are introduced in order to achieve this.<br>
239 The following source programs are implemented for this test case:<br>
240 1. TestProvider.mof defines 3 sample classes that implement the
241 TestProvider.cpp source program. <br>
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242 kumpf 1.2 2. The registration mof TestProviderR.mof registers the TestProvider
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243 s.soni 1.1 in the root/SampleProvider namespace.<br>
244 3. TestProvider.cpp is the actual provider module code.<br>
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245 kumpf 1.2 4. TestProviderMain.cpp is the main program calling the TestProvider
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246 s.soni 1.1 through PegasusCreateProvider call.<br>
247 5. A client script containing the commands for running CLI with
248 the possible CIM operations for the classes implemented by the provider.<br>
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249 kumpf 1.2 6. Scripts for deleting provider module and restarting the cimserver
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250 s.soni 1.1 are also written for simplifying the test execution.<br>
251 <br>
252 A TestProvider is implemented for handling multiple classes. This
253 provider also contains the code for testing the exception handling explained
254 in the solution b) below. This exception handling test is present inside
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255 kumpf 1.2 conditional macros to enable/disable it.</font></small>
256 <h3><small><font face="Helvetica, Arial, sans-serif">b) Exception handling
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257 s.soni 1.1 by Providers<br>
258 </font></small></h3>
259 <small><font face="Helvetica, Arial, sans-serif"
260 color="#000000">Exception handling by the cimom when all types of exceptions
261 are thrown from within the provider methods. A sample provider will be
262 used to throw exceptions at different points in the execution of its
263 methods (like enumInstances, enumInstNames etc.)<br>
264 <br>
265 The provider contains the following code macro for enabling and
266 disabling the exception handling tests in the provider<br>
267 <br>
268 </font><font face="Helvetica, Arial, sans-serif">// The following
269 macro is enabled/ disabled by setting TEST_EXCEPTIONS in the Makefile.<br>
270 </font><font face="Helvetica, Arial, sans-serif" size="-1"><small><br>
271 <big><b>TestProvider.cpp</b></big></small></font><big><font
272 face="Helvetica, Arial, sans-serif" size="-1"><big><br>
273 ....<br>
274 </big></font><font face="Helvetica, Arial, sans-serif"
275 size="-1">#ifdef TEST_EXCEPTIONS<br>
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276 kumpf 1.2 #define PEGASUS_EXCEPTION PEGASUS_CIM_EXCEPTION(CIM_ERR_FAILED,
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277 s.soni 1.1 "TestProvider Exception")<br>
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278 kumpf 1.2 #define CIM_EXCEPTION CIMException(CIM_ERR_FAILED,
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279 s.soni 1.1 "Test Provider")<br>
280 #else<br>
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281 kumpf 1.2 #define PEGASUS_EXCEPTION // These can be defined at the compilation
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282 s.soni 1.1 time in the Makefile.<br>
283 #define CIM_EXCEPTION<br>
284 #endif<br>
285 <br>
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286 kumpf 1.2 // Update the value of the following macro for enabling/ disabling
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287 s.soni 1.1 exceptions.<br>
288 //<br>
289 #define EXCEPTION_TYPE 0<br>
290 <br>
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291 kumpf 1.2 #define CheckExceptionType(X) {
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292 s.soni 1.1 \<br>
293 if (X == 1) throw PEGASUS_EXCEPTION; \<br>
294 if (X == 2) throw CIM_EXCEPTION; \<br>
295 }<br>
296 <br>
297 </font></big><font face="Helvetica, Arial, sans-serif">The normal
298 working of the provider is unaffected if the TEST_EXCEPTIONS flag is
299 not set during the compilation.<br>
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300 kumpf 1.2 </font></small>
301 <h3><small><font face="Helvetica, Arial, sans-serif">c) Provider load/unload
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302 s.soni 1.1 and Timing<br>
303 </font></small></h3>
304 <small><font face="Helvetica, Arial, sans-serif">Written a sample
305 provider in which multiple sleep points are introduced at various points
306 in the provider method execution. The sleep durations can be different
307 for the different provider methods.<br>
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308 kumpf 1.2 Its an attempt to find out any inconsistencies in the provider load/unload
309 (if any) logic.The ideal test case requires that a provider unloads when
310 another client is invoking enumerate instances for a provider class and
311 vice versa. It is quite difficult to create this kind of situation with
312 this set of test programs. By running these tests for long hours we might
313 hit some problem.</font></small>
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314 s.soni 1.1 <ul>
315 <li><small><font face="Helvetica, Arial, sans-serif">The provider
316 (TimingProvider.cpp) implements the base class TimingSampleClass with
317 3 derived classes TimeOne, TimeTwo, TimeThree.</font></small></li>
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318 kumpf 1.2 <li><small><font face="Helvetica, Arial, sans-serif">The instances
319 of the TimeOne and TimeTwo classes are created inside the TimingProvider:initialize
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320 s.soni 1.1 method in the provider.</font></small></li>
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321 kumpf 1.2 <li><small><font face="Helvetica, Arial, sans-serif">Scripts are
322 provided to build, load and execute the provider programs as well running
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323 s.soni 1.1 the client programs and scripts.</font></small></li>
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324 kumpf 1.2
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325 s.soni 1.1 </ul>
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326 kumpf 1.2 <small><font face="Helvetica, Arial, sans-serif">The client programs
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327 s.soni 1.1 include:<br>
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328 kumpf 1.2 </font></small>
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329 s.soni 1.1 <ul>
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330 kumpf 1.2 <li><small><font face="Helvetica, Arial, sans-serif">Makefile.Client
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331 s.soni 1.1 - A separate Makefile to execute the client program.</font></small></li>
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332 kumpf 1.2 <li><small><font face="Helvetica, Arial, sans-serif">TimingClient.cpp
333 - This program tests the TimingProvider implemented by running multiple
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334 s.soni 1.1 threads performing different CIM operations.</font> <font
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335 kumpf 1.2 face="Helvetica, Arial, sans-serif">main() forks and child calls EnumerateInstances
336 for one class. The parent make calls to EnumerateInstances and EnumerateClass.
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337 s.soni 1.1 Long sleeps are inserted between the calls to enumerateinstances and enumerateClasses.</font></small></li>
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338 kumpf 1.2 <li><small><font face="Helvetica, Arial, sans-serif">Client script
339 - This script contains the combination of TimingClient and CLI client
340 programs with random sleeps inserted between them.CLI is used to enumerate
341 instances/ instancenames and enumerate classes for the root/SampleProvider
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342 s.soni 1.1 namespace created by the test provider.</font></small></li>
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343 kumpf 1.2
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344 s.soni 1.1 </ul>
345 <font size="-1"><font face="Helvetica, Arial, sans-serif">From <b>TimingClient.cpp</b><br>
346 .....<br>
347 int main(int argc, char** argv)<br>
348 {<br>
349 pid_t pid;<br>
350 try<br>
351 {<br>
352 CIMClient client;<br>
353 <br>
354 client.connect("localhost", 5988, "", "");<br>
355 <br>
356 if ((pid = fork()) < 0)<br>
357 {<br>
358 cout << "Fork Error\n" << endl;<br>
359 exit(0);<br>
360 }<br>
361 else if (pid == 0)<br>
362 { // child<br>
363 sleep(10);<br>
364 EnumerateInstancesTiming(client, CLASSONE);<br>
365 s.soni 1.1 _exit(0);<br>
366 }<br>
367 // parent<br>
368 sleep(10);<br>
369 EnumerateInstancesTiming(client, CLASSTWO);<br>
370 sleep(5);<br>
371 EnumerateClassesTiming(client, "TimingSampleClass");<br>
372 }<br>
373 catch(Exception& e)<br>
374 {<br>
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375 kumpf 1.2 PEGASUS_STD(cerr) << "Error: " << e.getMessage()
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376 s.soni 1.1 <<<br>
377 PEGASUS_STD(endl);<br>
378 exit(1);<br>
379 }<br>
380 }<br>
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381 kumpf 1.2 </font></font>
382 <h3><small><font face="Helvetica, Arial, sans-serif">d) Resource sharing,
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383 s.soni 1.1 multithreading and Inheritance in provider methods.<br>
384 </font></small></h3>
385 <small><font face="Helvetica, Arial, sans-serif">Doing a fork()
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386 kumpf 1.2 from inside the provider methods and examining the file descriptors inherited
387 by the sub-processes. To handle Linux threading cleanly, the sample provider
388 thread spawn a reaper thread whose sole purpose is to wait for the subprocess
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389 s.soni 1.1 to terminate.<br>
390 <br>
391 The implementation is done by creating a sample provider in the
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392 kumpf 1.2 following manner:</font></small>
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393 s.soni 1.1 <ol>
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394 kumpf 1.2 <li><small><font face="Helvetica, Arial, sans-serif">MultithreadingSampleProviderMain.cpp
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395 s.soni 1.1 is the source file which contains the provider entry point routine.</font></small></li>
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396 kumpf 1.2 <li><small><font face="Helvetica, Arial, sans-serif">MultithreadingSampleProvider.cpp
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397 s.soni 1.1 [h] are the main provider sources that implement the MultithreadingSampleClass.</font></small></li>
398 <li><small><font face="Helvetica, Arial, sans-serif">The Base
399 class has 3 derived classes called ThreadSampleOne, ThreadSampleTwo and
400 ThreadSampleThree.</font></small></li>
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401 kumpf 1.2 <li><small><font face="Helvetica, Arial, sans-serif">ThreadSampleOne
402 class instances are created inside the enumerateInstances method of the
403 provider. After the instances creation this method calls explicitly the
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404 s.soni 1.1 CreateThread function, which spawns a new sub-process and executes the command
405 line cim client CLI.</font></small></li>
406 <li><small><font face="Helvetica, Arial, sans-serif">The additional
407 functions added in the provider source program other than the standard
408 provider methods are:</font></small></li>
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409 kumpf 1.2
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410 s.soni 1.1 <ol>
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411 kumpf 1.2 <li><small><font face="Helvetica, Arial, sans-serif">CreateThread()
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412 s.soni 1.1 - Function creating the sub-process (by using fork())</font></small></li>
413 <li><small><font face="Helvetica, Arial, sans-serif">reader()
414 - child process reads from the input stream</font></small></li>
415 <li><small><font face="Helvetica, Arial, sans-serif">writer()
416 - Parent process writing to the output stream<br>
417 </font></small></li>
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418 kumpf 1.2
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419 s.soni 1.1 </ol>
420 <li><small><font face="Helvetica, Arial, sans-serif">The parent
421 process after writing to the output stream sleeps in the function writer()
422 which makes the CLI command give a timeout error.</font></small></li>
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423 kumpf 1.2 <li><small><font face="Helvetica, Arial, sans-serif">Scripts are
424 created for building the source and repository and for registering the
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425 s.soni 1.1 provider.</font></small></li>
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426 kumpf 1.2
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427 s.soni 1.1 </ol>
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428 kumpf 1.2 <font face="Helvetica, Arial, sans-serif"><small>From <b>MultithreadingSampleProvider.cpp
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429 s.soni 1.1 </b>[ CreateThreads() function is illustrated below]:<br>
430 </small></font><small><font face="Helvetica, Arial, sans-serif">....<br>
431 <br>
432 <font size="-1"> int CreateThreads()<br>
433 {<br>
434 char* arg_list[] = {<br>
435 "CLI",<br>
436 "niall",<br>
437 "-n",<br>
438 "root/SampleProvider",<br>
439 NULL<br>
440 };<br>
441 int fds[2];<br>
442 pid_t cpid;<br>
443 <br>
444 pipe(fds);<br>
445 <br>
446 cpid = fork();<br>
447 if (cpid == (pid_t)0)<br>
448 {<br>
449 FILE* stream;<br>
450 s.soni 1.1 // This is the child process. Close our copy of the write
451 end<br>
452 // of the file descriptor.<br>
453 close(fds[1]);<br>
454 // Connect the read end of the pipe to standard input.<br>
455 dup2(fds[0], STDIN_FILENO);<br>
456 // Convert the read file descriptor to a FILE object, and
457 read from it<br>
458 stream = fdopen(fds[0],"r" );<br>
459 reader(stream);<br>
460 close(fds[0]);<br>
461 // Replace the child process with the CLI program<br>
462 execvp ("CLI", arg_list);<br>
463 }<br>
464 else<br>
465 {<br>
466 FILE* stream;<br>
467 // Close our copy of the read end of the file descriptor.<br>
468 close (fds[0]);<br>
469 // Convert the write file descriptor to a FILE object,and
470 write to it.<br>
471 s.soni 1.1 stream = fdopen(fds[1],"w" );<br>
472 <br>
473 writer("Test Writer from Parent process\n", 2, stream);<br>
474 </font> </font><font face="Helvetica, Arial, sans-serif"
475 size="-1"> close (fds[1]);<br>
476 // Wait for child process to finish<br>
477 waitpid(cpid, NULL, 0);</font></small><font size="-1"><br>
478 </font><small><font face="Helvetica, Arial, sans-serif"><font
479 size="-1"> }<br>
480 return 0;<br>
481 }<br>
482 ....<br>
483 ....</font><br>
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484 kumpf 1.2 </font></small>
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485 s.soni 1.1 <h3><small><font face="Helvetica, Arial, sans-serif">e) CIMOMHandle and OperationContext</font></small></h3>
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486 kumpf 1.2 <small><font face="Helvetica, Arial, sans-serif">A sample provider
487 exercising the CIMOMHandle that sets the UserIdentity into OperationContext.
488 The provider method modifies the user identity in the OperationContext
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489 s.soni 1.1 to check the cimom behavior.<br>
490 <br>
491 The CIMOMSample provider modifies the user identity in its methods.
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492 kumpf 1.2 Then a client is executed with different combinations of the user/ password
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493 s.soni 1.1 information for checking provider behavior.<br>
494 <br>
495 Client scripts are written for <br>
496 1) Adding users to be authorised for accessing a particular
497 namespace [using "cimauth"] <br>
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498 kumpf 1.2 2) Trying to access the namespace with valid/invalid user/passwd
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499 s.soni 1.1 information ["cimuser" is used to verify the users present]<br>
500 <br>
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501 kumpf 1.2 </font></small>
502 <h3><small><font face="Helvetica, Arial, sans-serif">f) XML Parser/ Generator
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503 s.soni 1.1 verification for Malformed property strings<br>
504 </font></small></h3>
505 <small><font face="Helvetica, Arial, sans-serif">Checking the XML
506 parser and generator programs when malformed strings are passed through
507 the providers. The malformed property strings can be anything from trailing
508 NULs to any special characters and angle brackets. A sample provider is
509 written which introduces bad strings while creating the instances of the
510 sample class. These property strings are verified from inside the provider
511 methods to verify if the provider receives the proper XML encoded string
512 and not any junk characters.<br>
513 <br>
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514 kumpf 1.2 The test provider is written for testing the following 3 cases regarding
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515 s.soni 1.1 data handling:</font></small><small><font
516 face="Helvetica, Arial, sans-serif"><br>
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517 kumpf 1.2 </font></small>
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518 s.soni 1.1 <ul>
519 <li><small><font face="Helvetica, Arial, sans-serif">Trailing
520 nul, did you verify that the provider actually saw the nul character
521 rather than the URL escape sequence? For example, the provider should
522 see {'a', ..., \0'}, not {'a', ..., '\\', '0', '0', '0'}.</font></small></li>
523 <li><small><font face="Helvetica, Arial, sans-serif">Trailing
524 angle brackets '<', '>'</font></small></li>
525 <li><small><font face="Helvetica, Arial, sans-serif">Trailing
526 spaces and special characters.</font></small></li>
|
527 kumpf 1.2
|
528 s.soni 1.1 </ul>
|
529 kumpf 1.2
530 <h3><small><font face="Helvetica, Arial, sans-serif">g) Large Data Handling
|
531 s.soni 1.1 by the provider<br>
532 </font></small></h3>
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533 kumpf 1.2 <small><font face="Helvetica, Arial, sans-serif">A sample provider
534 implementing a class with large number of instances. The number of instances
535 can be controlled through a compilation time configuration variable. Changing
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536 s.soni 1.1 the number of instances the provider can be tested for large data handling.<br>
537 <br>
538 There is a const macro NO_OF_INSTANCES which decides the number
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539 kumpf 1.2 of instances to be created. This can be modified for testing huge amount
|
540 s.soni 1.1 of data in 2 places. Either in the source file LargeDataProvider.cpp Or in
|
541 kumpf 1.2 the Makefile by defining the NO_OF_INSTANCES locally (LOCAL_DEFINES=-DNO_OF_INSTANCES=<number>).
542 If it is defined inside the Makefile, the value present in the cpp source
|
543 s.soni 1.1 is overwritten.<br>
544 </font><font face="Helvetica, Arial, sans-serif" size="-1"><small><br>
545 </small></font></small><font face="Helvetica, Arial, sans-serif"
546 size="-1"> from <b>LargeDataProvider.cpp<br>
547 </b>......<b><br>
548 </b>#ifndef NO_OF_INSTANCES<br>
549 #define NO_OF_INSTANCES 100<br>
550 #endif<br>
551 </font><font face="Helvetica, Arial, sans-serif" size="-1">......</font><font
552 face="Helvetica, Arial, sans-serif" size="-1"><br>
553 <br>
554 </font><font face="Helvetica, Arial, sans-serif" size="-1">from
555 <b>Makefile</b></font><font face="Helvetica, Arial, sans-serif"
556 size="-1"><br>
|
557 kumpf 1.2 </font><font face="Helvetica, Arial, sans-serif" size="-1">NO_OF_INSTANCES
|
558 s.soni 1.1 = 100 # The number of instances can be changed here<br>
559 </font><font face="Helvetica, Arial, sans-serif" size="-1">......</font><font
560 face="Helvetica, Arial, sans-serif" size="-1"><br>
561 <br>
562 </font><small><font face="Helvetica, Arial, sans-serif"> The creation
563 of Instances is done when the enumerateInstances method of the provider
564 is called.If a client requests for enumerateInstanceNames it will fail
|
565 kumpf 1.2 if enumerateInstances wouldn't have been executed. </font></small>
566
|
567 s.soni 1.1 <h3> </h3>
|
568 kumpf 1.2
|
569 s.soni 1.1 <h3><small><font face="Helvetica, Arial, sans-serif">f) Load MOFs</font></small></h3>
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570 kumpf 1.2 <small><font face="Helvetica, Arial, sans-serif">The MOF files for
571 all the sample providers developed above are present in a common directory
572 LoadMOF/. The directory structure is taken from the $PEGASUS_HOME/src/Providers/sample
573 directory inside the pegasus source tree. Makefile in LoadMOF is responsible
574 for compiling all the classes and registering the sample providers. Unregistering
575 of providers is also supported by introducing a "unregister" target in
|
576 s.soni 1.1 the LoadMOF/Makefile. This unregister and deletes the provider loaded by
577 it. <br>
|
578 kumpf 1.2 The user has to run "make repository" again in order to compile the
579 provider classes and to re-register the provider.</font></small>
580
|
581 s.soni 1.1 <h2><small><font face="Helvetica, Arial, sans-serif" color="#000000">Rationale</font></small></h2>
582 <small><font face="Helvetica, Arial, sans-serif"> Improved test coverage
583 for Pegasus</font></small><br>
|
584 kumpf 1.2
|
585 s.soni 1.1 <h2><small><font face="Helvetica, Arial, sans-serif" color="#000000">Schedule</font></small></h2>
|
586 kumpf 1.2
|
587 s.soni 1.1 <p><small><font face="Helvetica, Arial, sans-serif">The goal is to get this
588 functionality in 2.3.2 or very early in the 2.4 main branch. [The first
589 code drop for the test programs mentioned in this PEP is available now
590 and can be committed anytime].<br>
591 </font></small></p>
|
592 kumpf 1.2
|
593 s.soni 1.1 <table cellpadding="2" cellspacing="2" border="1"
594 style="text-align: left; width: 100%;">
595 <tbody>
596 <tr>
597 <td style="vertical-align: top;" bgcolor="#cccccc"><font
598 face="Helvetica, Arial, sans-serif"><small>action<br>
599 </small></font></td>
600 <td style="vertical-align: top;" bgcolor="#cccccc"><font
601 face="Helvetica, Arial, sans-serif"><small>planned<br>
602 </small></font></td>
603 <td style="vertical-align: top;" bgcolor="#cccccc"><font
604 face="Helvetica, Arial, sans-serif"><small>actual<br>
605 </small></font></td>
606 <td style="vertical-align: top;" bgcolor="#cccccc"><font
607 face="Helvetica, Arial, sans-serif"><small>comment<br>
608 </small></font></td>
609 </tr>
610 <tr>
611 <td style="vertical-align: top;"><font
612 face="Helvetica, Arial, sans-serif"><small>PEP submitted<br>
613 </small></font></td>
614 s.soni 1.1 <td style="vertical-align: top;"><font
615 face="Helvetica, Arial, sans-serif"><small>12/24/2003<br>
616 </small></font></td>
617 <td style="vertical-align: top;"><font
618 face="Helvetica, Arial, sans-serif"><small>12/24/2003<br>
619 </small></font></td>
620 <td style="vertical-align: top;"><font
621 face="Helvetica, Arial, sans-serif"><small><br>
622 </small></font></td>
623 </tr>
624 <tr>
625 <td style="vertical-align: top;"><font
626 face="Helvetica, Arial, sans-serif"><small>PEP reviewed<br>
627 </small></font></td>
628 <td style="vertical-align: top;"><font
629 face="Helvetica, Arial, sans-serif"><small>02/03/2004</small></font></td>
630 <td style="vertical-align: top;"><font
631 face="Helvetica, Arial, sans-serif"><small>02/03/2004<br>
632 </small></font></td>
633 <td style="vertical-align: top;"><font
634 face="Helvetica, Arial, sans-serif"><small><br>
635 s.soni 1.1 </small></font></td>
636 </tr>
637 <tr>
638 <td style="vertical-align: top;"><font
639 face="Helvetica, Arial, sans-serif"><small>PEP approved<br>
640 </small></font></td>
641 <td style="vertical-align: top;"><font
642 face="Helvetica, Arial, sans-serif"><small>02/03/2004<br>
643 </small></font></td>
644 <td style="vertical-align: top;"><font
645 face="Helvetica, Arial, sans-serif"><small>02/03/2004<br>
646 </small></font></td>
647 <td style="vertical-align: top;"><font
648 face="Helvetica, Arial, sans-serif"><small><br>
649 </small></font></td>
650 </tr>
651 <tr>
652 <td style="vertical-align: top;"><font
653 face="Helvetica, Arial, sans-serif"><small>Code committed<br>
654 </small></font></td>
655 <td style="vertical-align: top;"><font
656 s.soni 1.1 face="Helvetica, Arial, sans-serif"><small><br>
657 </small></font></td>
658 <td style="vertical-align: top;"><font
659 face="Helvetica, Arial, sans-serif"><small><br>
660 </small></font></td>
661 <td style="vertical-align: top;"><font
662 face="Helvetica, Arial, sans-serif"><small>The changes can be committed in
663 a day after the PEP is approved.<br>
664 </small></font></td>
665 </tr>
|
666 kumpf 1.2
667 </tbody>
|
668 s.soni 1.1 </table>
|
669 kumpf 1.2
|
670 s.soni 1.1 <h2><small><font face="Helvetica, Arial, sans-serif" color="#000000">Discussion</font></small></h2>
671 <small><font face="Helvetica, Arial, sans-serif">The PEP was not balloted,
|
672 kumpf 1.2 as per the agreement of the Pegasus Architecture team.</font></small>
673
|
674 s.soni 1.1 <p><small><font face="Helvetica, Arial, sans-serif" color="#0000ff"></font></small></p>
|
675 kumpf 1.2
|
676 s.soni 1.1 <hr><br>
677 <br>
|
678 kumpf 1.2
679 <p><small><font face="Helvetica, Arial, sans-serif"><i><font size="2"><small>Copyright
680 (c) 2003 BMC Software; Hewlett-Packard Development Company, L.P.; IBM
|
681 s.soni 1.1 Corp.; The Open Group</small></font><br>
682 <br>
683 <font size="1"><small>Permission is hereby granted, free of charge,
|
684 kumpf 1.2 to any person obtaining a copy of this software and associated documentation
685 files (the "Software"), to deal in the Software without restriction, including
686 without limitation the rights to use, copy, modify, merge, publish, distribute,
|
687 s.soni 1.1 sublicense, and/or sell copies of the Software, and to permit persons to
688 whom the Software is furnished to do so, subject to the following conditions:</small></font><br>
689 <font size="2"><small><br>
|
690 kumpf 1.2 </small></font> <font size="1"><small>THE ABOVE COPYRIGHT NOTICE
691 AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN ALL COPIES OR SUBSTANTIAL
692 PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY
693 OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
694 OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
695 IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
696 DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
697 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
698 s.soni 1.1 DEALINGS IN THE SOFTWARE.</small></font></i></font></small></p>
|
699 kumpf 1.2
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700 s.soni 1.1 <p><small><font face="Helvetica, Arial, sans-serif"> </font></small></p>
701 <small><font face="Helvetica, Arial, sans-serif"><br>
702 <br>
703 <br>
704 </font></small> <br>
705 <br>
706 <br>
707 <br>
708 <br>
709 <br>
710 <br>
711 <br>
712 <br>
713 </body>
714 </html>
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