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| 2 | Version history
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| 3 | ---------------
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| 4 |
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| 5 | 19/5/2010 Service histories now available via DimRpc from DColl, not via .hist service
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| 6 | When regular expression compiling results in error, State is set to ERROR, not
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| 7 | FATAL. The erroneous expression is ignored in the following.
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| 8 | 25/5/2010 Service history remains available if service itself become unavailable. If not
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| 9 | yet in memory, reading from file is tried. Improved error handling of
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| 10 | history files.
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| 11 | 28/5/2010 Changed name of 'State' service to 'Message' to better reflect its functionality.
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| 12 | Added client information to log file entries.
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| 13 | 30/5/2010 Created Bridge server that repeats services from one DNS to another.
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| 14 | Service quality now also written to slow data file.
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| 15 | 31/5/2010 Configuration file format follows semi-standard INI format.
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| 16 | 7/6/2010 Separated History service from DColl. History format changed, now includes
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| 17 | service format (allows history access also when service is unavailable).
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| 18 | 11/6/2010 Bridge does not forward history service
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| 19 | 17/6/2010 Added SendToLog() method. Changed severity encoding of Message service to
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| 20 | use standard DIM structure of format "I:1;C"
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| 21 | 18/6/2010 Alarm server configuration accepts now one email address per server. A new
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| 22 | service for each observed server SERVERNAME/AlarmLevel contains the highest
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| 23 | level that occurred in the past. Reset of alarm level only via a DIM command.
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| 24 | 19/6/2010 ToString() now returns std::string
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| 25 | 23/6/2010 GetConfig() returns std::string. Non-blocking configuration request in case
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| 26 | GetConfig() not called from main thread. Access to configuration information
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| 27 | internally mutex protected.
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| 28 | 24/6/2010 Workaround for erroneous /SERVICE_LIST updates. Added static tokenize method to
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| 29 | Evidence class.
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| 30 | 30/6/2010 Made Lock()/Unlock() publicly available (mutex of type PTHREAD_MUTEX_ERRORCHECK),
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| 31 | in case signal is set with ActivateSignal() this signal will be blocked while locked.
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| 32 | Implemented experimental automatic full configuration tracking for Bridge.
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| 33 | 7/7/2010 All commandHandler() and rpcHandler() safely translates data into string
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| 34 | using ToString(). EvidenceServer class constructor now takes std::string as argument.
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| 35 | Removed default configuration file from Config.
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| 36 | 19/7/2010 Added documentation. Replaced std::vector by std::map at several locations. Access to
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| 37 | class-wide pointer in Message() protected by mutex (currently the memory of the
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| 38 | second-last message will not be freed correctly if severity is FATAL). Added
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| 39 | History server configuration parameters to adjust buffer size.
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| 40 | 20/7/2010 SendToLog() does not call Message() in case of error, but writes error message to log.
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| 41 | 21/7/2010 Lock()/Unlock() do not report errors via Message(), but print to console and use
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| 42 | SendToLog(). That avoids a recursion problem since Message() also uses locking.
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| 43 | 26/7/2010 General command '/ResetMessage' will reset message text and severity. This feature is
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| 44 | used by Alarm if it receives a command to reset an alarm level.
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| 45 | ConfigChanged() is called as separate thread when configuration file changes. Thread ID
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| 46 | is checked in GetConfig() and also from this thread it will make blocking requests.
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| 47 | 12/8/2010 Added command to switch alarm server on/off (command 'Alarm/Switch').
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| 48 | 9/12/2010 Minimum period for checking server status in Alarm set to 5 seconds.
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| 49 | 2/2/2011 Changed encoding of WARN, ERROR and FATAL to 10,20,30 to allow intermediate values.
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| 50 | Non-blocking configuration request with default value was not working.
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| 51 | Signal handler calls abort() if invoked three times or more.
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| 52 | 10/6/2011 Services can be excluded from History buffer (mainly for large event data services)
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| 53 | 20/6/2011 History buffers periodically saved to file (in case program crash or computer reboot)
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| 54 | 6/7/2011 Missing pthread_mutexattr_init() in Evidence constructor caused spurious errors when
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| 55 | locking mutex
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| 56 | 2/8/2011 Used inCallback() method of DIM version v19r23 to decide between blocking or
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| 57 | non-blocking config request. Updated EvidenceServer::ToString() for B and V formats.
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| 58 | 16/2/2012 EvidenceServer::ToString() handles more complex single-type formats (e.g. "F:1;F:4;F"
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| 59 | 18/2/2012 History server detection for minimum change takes an index range given in the configuration
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| 60 | into account (e.g. Service:a-b:0.4 requires an minimum absolute change of 0.4 for the average
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| 61 | value of indices a to b)
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| 62 | 20/2/2012 Disabled padding per default in Evidence class constructor, and also in History and DColl
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| 63 | servers. EvidenceServer::ToString() can because of this now handle all format strings.
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| 64 | 24/2/2012 Improved interactive behaviour of legend items (drag&drop, context menu). Handling of histories in
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| 65 | Edd much faster now. Made a new version Edd:LP for La Palma. History server publishes a list of
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| 66 | services subscribed to.
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| 67 | 13/6/2012 Removed calling Message() before abort() in signal handler, as Message() might get stuck
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| 68 | 19/6/2012 Giving no indices in OpenHistory() will try to open plot for all members of an array
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