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Diff for /pegasus/readme.pulloperations between version 1.1.2.4 and 1.1.2.22

version 1.1.2.4, 2013/06/09 17:18:32 version 1.1.2.22, 2014/04/18 00:12:04
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 checkin to head of tree. Please feel free to add notes, etc in this checkin to head of tree. Please feel free to add notes, etc in this
 section as you review/test.>>>>>> section as you review/test.>>>>>>
  
   
 TODO list: TODO list:
    1. Binary operation from OOP.  Need to add counter to binary    1. Binary operation from OOP.  Need to add counter to binary
       protocol to be able to count objects in response. Generates       protocol to be able to count objects in response. Generates
       warnings in things like messageserializer and does not work with       warnings in things like messageserializer and does not work with
       OOP right now.        OOP right now.  Corrected by converting to XML.
    2. OpenExecQuery - Code is incorrect in that it used InstancesWithPath     2. OpenExecQuery - Code is incorrect in that it does not include the
       where the spec is instances with no path.  Need new function to wrap        return from the exec query function to the aggregator yet.
       getInstanceElement(withoutPathElement) in XmlReader.  Note that  
       Alternate is to put flag on InstancesWith Path to say no path  
    3. Code for Pull part of OpenQueryInstancesRequest a) should be part of    3. Code for Pull part of OpenQueryInstancesRequest a) should be part of
       the common CIMOperationRequestDispatcher execCommon code.       the common CIMOperationRequestDispatcher execCommon code.
    4. The changes to WQLCIMOperationRequestDispatcher and CQL... for handling    4. The changes to WQLCIMOperationRequestDispatcher and CQL... for handling
       pull not completed so we feed the responses back to the EnmerationContext       pull not completed so we feed the responses back to the EnmerationContext
       queues       queues
    3. Lots of minor TODOs, etc.     3. Lots of minor TODOs, diagnostics, etc. still in the code
    4. External runtime variables. Decide this as part of PEP. The variables     4. External runtime variables. Proposing that they be fixed for this release
       exist in CIMOperationRequestDispatcher but not in CIMConfig.  The primary        rather than set by configuration.  This should be discussed.  Am making
       ones to consider are:        this a separate bug.  See bug 9819 for the changes to cover this.
       a. System maxObjectCount.  Setting some maximum size on what a pull  
           client can request (i.e. the maximum size of the maxObjectCount on  
           Open... and pull operations.  
       b. Pull interoperationTimeout (max times between operations). This is  
           the maximum number of seconds on the operationTimeout parameter of the  
           Open operations  
       c. Maximum size of the responseCache before it starts backing up  
           responses to the providers.  
    5. Decision on EnumerationContext timeout (separate thread or just    5. Decision on EnumerationContext timeout (separate thread or just
       checks during other operations). Can we, in fact really keep the       checks during other operations). Can we, in fact really keep the
       enumeration context table and queue under control without monitoring       enumeration context table and queue under control without monitoring
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       b. We should protect against providers that no not every finish delivering       b. We should protect against providers that no not every finish delivering
           or take to long between deliveries.  This does not exist in Pegasus           or take to long between deliveries.  This does not exist in Pegasus
           today           today
    6. Clean up code in Dispatcher. The associators code is still real mess     6. Consider moving some of the code in dispatcher from templates to common
       and the pull code is in a template.  The Pull code is good now but        functions which would mean adding intermediate classes in CIMMessage but
       must be duplicated.  Look at creating new CIMMessage CIMPullResponseMessage        would reduce code size.
       so that we can have common code.  Everything is the same except what  
       goes into the CIMResponseData so it is logical to have completely  
       common processing  
    7. Extension to avoid double move of objects in CIMResponseData (one    7. Extension to avoid double move of objects in CIMResponseData (one
       into enumerationContext queue and second to new cimResponseData for       into enumerationContext queue and second to new cimResponseData for
       response.  Want to avoid second move by extending Open/Pull response       response.  Want to avoid second move by extending Open/Pull response
       messages to include count and CIMResponse data to count objects out       messages to include count and CIMResponse data to count objects out
       of queue when converting (avoids the second move).  Big issue here       of queue when converting (avoids the second move).  Big issue here
       with binary data since need to extend format to count it.       with binary data since need to extend format to count it.
    8. Still using templates, etc. in  code in the Dispatcher. This is for     8. NEXT TASKS:
       all of the open operations where there is a lot of duplicate code        a. test the enumeration timeout thread
       and the pull operations that are 99% duplicate code (in a single template)        b. finish and test the OpenQueryInstances
         c. Clean up TODOs
         d. Find issue when we run makepoststarttests in pullop client with
            forceProviderProcesses = true.  This causes an operation like
            cimcli pei CIM_ManagedElement to not complete (client timeout)
            sometimes.
   
   17 April 2014
   1. Reorganized the lock/unlock for handling the EnumerationContext because
      there were thread windows (i.e. using the context after it was released
      by other thread).
   2. Modified code for the InteroperationTimerThread and deleted old code that
      allowed this whole thread to by bypassed.
   3. Internationalized a number of CIMOperationRequestDispatcher CIMException
      response messages.
   4. Fixed stress tests in Client/tests/pullop that were getting timeout. The
      issue was not the pull code but that fact that the idle client timeout
      appears to be measureing to the end of the operation and the operation
      was taking more than 40 seconds which is the default timeout. The idle
      timeout takes no account of the fact that chunks are being regularly
      delivered.
   5. Several minor code changes.
   NOTE: At this point the code passes extensive tests of the pull operations
      both in OOP and none OOP mode (but with lots of diagnostics that may
      be affecting timing).
   
   10 April 2014
   1. Fix issues causing failure with repeated pull operations.
   2. Consolidate some of the CIMOperationRequestDispatcher.cpp template code
   
   7 April 2104
     MergeOut of head of tree.
   
   7 April 2014
   1. Permanently fixed issue with getting correct number of objects on response.
      This was introduced when did a temp fix to the OOP processing, in particular
      removed the condition variable wait in the CIMOperationDispatcher handle
      functions for opens and pulls.  This moved the functionality to kick off
      open and pull responses to the provider threads if there are not enough
      objects when the handle is processed. Also added a variable to allow us to
      test with either a) responses are required to satisfy the original
      request size or) b, responses are required only to return some objects.
      We will add statistics to see which of these works best.
   2. Modified WsmProcessor EnumerationContext class since the name conflicts
      with the pull Operation EnumerationContext class.
   3. Created a new intermediate level of CIMMessage, the CIMPullResponseData
      Message so that all of the open and Pull responses can use common code
      since there are only two variables (endOfSequence and EnumerationContext)
      and they are common across all the open and pull responses.
   4. Removed a number of diagnostics.
   5. Cleaned up the Dispcatcher so that the open and pulls have common response
      code and that code can be used from the dispatcher handle functions and
      the provider response functions.
   
   31 March 2014 - Checkin
   1. Fixed issues in OOP processing of pull operations, in particular
      issues with cimxml output format when processed through the
      *InternalXmlEncoder functions.
   2. Clean up some of the internalXml functionality
   3. Found issues causing timeout with a particular provider.  The issue
      is that the dispatcher and monitor end up using the same thread so the
      condition variable in the dispatcher thread stops the monitor. Turned
      off the conditionVariable in getCache for the moment which means that
      we get number of responses for open... with 0 objects before the
      providers can begin to respond.  This is only for test.
   4. Added some statistics for enumerations and display the statistics
      when we close the server (same as cache statistics)
   
   12 March 2014 - Mergeout and Mergein
   1. Mergeout to head of tree for this date and mergein for patch update
      to bug 9676
   2. Extensions to pullop tests program and tests.
   3. Added some diagnostics in looking for OOP issue.
   4. Removed a number of diagnostics messages and cleaned up code in
      dispatcher to simplify pull operation processing.
   
   15 December 2013
   1. Mergeout and mergein up to 15 December 2013
   2. Clean up issues from tests documented in bug 9676 last week.
   3. Clean up some code in dispatcher
   4. Remove the filter function from ResponseStressc++Provider.
   
   21 November 2013
   1. Mergeout from head of tree to 21 November 2013.
   
   18 November 2013
   1. Cleanup of a bunch of minor errors and completion of all of the code for
      the openQueryInstances except for the PullInstances in Dispatcher and
      the aggregator function.
   2. OpenqueryInstances added to cimcli.
   
   13 October 2013 CVS branch update.
   1. Integrated bug 9786 into the branch.  Note that we need to test the
      generated statistics.
   2. Mergeout executed to update to head of tree as of 8:00 am 13 October 2013.
   3. Cleaned up several errors in OOP processing.  Note that there is at least
      one issue left when we to a pull on ManagedElement in at least one of the
      namespaces.
   4. Cleaned up some of the outstanding diagnostic code
   5. Generally passes all tests except for one test of pullop where it is trying
      to pull enum instances CIM_ManagedElement from a particular namespace.
   
   NOTE: I did not make comments here for changes in October despite the fact
   that I did 2 mergouts, number of fixes, and a mergein.
   
   30 September 2013 - CVS Update
   Mergeout head of tree up to 29 September 2013.
   
   29 September 2013. CVS update.
   1. Modified calls to statisticalData.cpp to a) directly call with request
      type, b) incorporate the open, pull, etc. messages.  However, since these
      are not part of the CIM class, we must do something special with them.
      See bug 9785 for full solution to this issue.
   2. Corrected OOP interface to enable new flag to indicate internal operations
      and set host, etc.
   3. Add code to CQLOperationsDispatcher and WQLOperationDispatcher to clean
      up CIMResponseDataCounter after filtering.
   4. Modified ProviderAgent to set Host info for some pull operations.
   5. Added new flag to CIMBinMsgSerializer and Deserializer.
   
   17 September 2013 CVS update (Actually two different updates over 3 days)
   1. Clean up some issues in CIMMessage.h and CIMMessage.cpp
   2. Extend OpenExecQuery to WQL and CQL processors but return not complete
   3. Remove memory leak in EnumerationContext and EnumerationContextTable
      handling.
   4. Created template functions for much of the pull operations.
   5. Reversed order of queryLanguage and query (and changed names to match
      execQuery) in client and server.  Note that these are the execQuery
      WQL and CQL filters and NOT FQL filters.
   6. Some code cleanup in dispatcher
   7. Today, passes all tests in pullop but issue in alltests. For some reason
      not finding CIMObjectManager instance. Also, leaves enumeration contexts
      if client terminates since cleanup thread not operating.
   8. XML from OOP not correctly processed.
   
   14 September 2013 CVS update
   Merged out up to 25 August.  Cleaned up all operations and standardized code.
   At this point the non pull operations code is in a set of templates but the
   pull is not yet.
   Fixed a significant number of problems so that it appears that the operations
   except for OpenExecQuery run stably, at least with the pullop test program.
   Note that there is a problem in that the Interop control provider is not
   returning its singleton wbemserver object for some reason.  Causes a test
   failure
   
   Fixed for 16 June CVS Update
      1. Cleaned up the enumerationContext and Table release functions and tested
         to confirm that we do not lose memory in either normal sequences or
         sequences that close early. Cleaned up pullop and added more tests
   Taged Before: PREAUG25UPDATE and after POSTAUG25UPDATE
  
 Fixed for 9 June CVS update Fixed for 9 June CVS update
    1. Cleaned up code for OpenQueryInstances.  Note that this is incomplete.    1. Cleaned up code for OpenQueryInstances.  Note that this is incomplete.
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 2 June 2013 2 June 2013
  
 Issues  - KS Issues  - KS
 1. have not installed the binary move in CIMResponseData. Please run  
 with OPP off.  
 2. Some problem in the processing so we are getting server crashes.  
 Right no I am guessing that this is in the binaryCodec and am going to  
 expand the test tools to allow testing through the localhost.  
  
 3. Still way to many TODO and KS comments and KS_TEMPS.  Removing bit by bit.   - Still way to many TODO and KS comments and KS_TEMPS.  Removing bit by bit.
  
 4. Env variable connection for the config parameters not installed.   - Runtime variable connection for the config parameters not installed. That
      has been made into a separate bug (see bug 9819)
  
 5. Issue with the threaded timer.  For some reason during tests it 5. Issue with the threaded timer.  For some reason during tests it
 eventually calls the timer thread with trash for the parm (which is eventually calls the timer thread with trash for the parm (which is
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 EnumerationContext so that the outputter will just take a defined number EnumerationContext so that the outputter will just take a defined number
 of objects directly from the gathering cache and save the second move. of objects directly from the gathering cache and save the second move.
  
 8. Not yet passing all tests but getting closer now.  8. Not yet passing all tests but getting closer now. The major test that is
   causing an error today is the execution of a full enumeration with the
 9. Created a tag before this commit TASK_PEP317_1JUNE_2013.  forceProviders = true.  This causes a client timeout sometimes.
  
 10. Next Tag will be TASK_PEP317_2_JUNE_2013 in the task branch  
  
  
 =========================================== ===========================================
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     -OpenReferenceInstancePaths     -OpenReferenceInstancePaths
     -OpenAssociatiorInstances     -OpenAssociatiorInstances
     -OpenAssociatorInstancePaths     -OpenAssociatorInstancePaths
       -OpenQueryInstances
     -PullInstancesWithPath     -PullInstancesWithPath
     -PullInstancePaths     -PullInstancePaths
       -PullInstances
     -CloseEnumeration     -CloseEnumeration
     -EnumerationCount     -EnumerationCount
      OpenExecQuery      OpenExecQuery
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 The default of this parameter is to refuse operat The default of this parameter is to refuse operat
  
 In the current release of Pegasus these are all compile time parameters. In the current release of Pegasus these are all compile time parameters.
   
   
   NOTES On working with task branch.
   
   Merge out Process
   
      To keep our TASK branch in sync with the current head of tree we need
      to do a regular merge out.  the TaskMakefile contains the makefile
      procedures to do this efficiently.  NOTE: Following these procedures is
      important in that you are merging out new material each time you do
      the merge out.  If you were just to repeatedly merge out, you would be
      merging previously merged changes a second time causing a real mess.
   
       Start with new directory and put TaskMakefile above pegasus (needed so you
       have this file for the initial operations.
   
         make -f TaskMakefile branch_merge_out BNAME=PEP317-pullop  ## takes a long time
   
      This checks out current head, merges it into task branch and sets tags
      for the mergeout.  Note that at the end of this step this work is
      part of the TASK... branch.
   
      NOW check for conflicts, errors, etc. that resulted from the merge.
      Look for conflict flags, compare the results (I use linux merge as a
      good graphic compare tool) and build and test. When you are satisfied
      that the merge out is clean, you can commit the results to the TASK...
      branch
   
      To commit the work to  this into Task branch
   
         make -f mak/TaskMakefile branch_merge_out_commit BNAME=PEP317-pullop
   
     or manually commit and finish as follows
   
       cvs commit
       make -f mak/TaskMakefile  branch_merge_out_finish BNAME=PEP317-pullop
   
   ## This last step is important since it cleans up temporary tags to prepare
      you for the next checkout
   
   COMPARE TASKBRANCH WITH HEAD
   
       In a new pegasus work space do same as above for merge out.
   
       make -f TaskMakefile BNAME=PEP317-pullop
   
       This produces a result which is all of the head merged into the branch.
       A diff of this is all the new changes to the head of tree that you will
       include into the merge.
   


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