Changelog

Version 4.3.1 [DEVEL] (rgerhards), 2009-05-25

• added capability to run multiple tcp listeners (on different ports)
• performance enhancement: imtcp calls parser no longer on input thread but rather inside on of the potentially many main msg queue worker threads (an enhancement scheduled for all input plugins where this is possible)
• added $GenerateConfigGraph configuration command which can be used to generate nice-looking (and very informative) rsyslog configuration graphs.
• added $ActionName configuration directive (currently only used for graph generation, but may find other uses)
• improved doc
  * added (hopefully) easier to grasp queue explanation

• improved testbench
  * added tests for queue disk-only mode (checks disk queue logic)

• bugfix: light and full delay watermarks had invalid values, badly affecting performance for delayable inputs
• build system improvements – thanks to Michael Biebl
• added new testing module imdiag, which enables to talk to the rsyslog core at runtime. The current implementation is only a beginning, but can be expanded over time

Version 4.3.0 [DEVEL] (rgerhards), 2009-04-17

• new feature: new output plugin omprog, which permits to start program and feed it (via its stdin) with syslog messages. If the program terminates, it is restarted.
• improved internal handling of RainerScript functions, building the necessary plumbing to support more functions with decent runtime performance. This is also necessary towards the long-term goal of loadable library modules.
• added new RainerScript function “tolower”
• improved testbench
  • added tests for tcp-based reception
  • added tcp-load test (1000 connections, 20,000 messages)
• added $MaxOpenFiles configuration directive
• bugfix: solved potential memory leak in msg processing, could manifest itself in imtcp
• bugfix: ompgsql did not detect problems in sql command execution this could cause loss of messages. The handling was correct if the connection broke, but not if there was a problem with statement execution. The most probable case for such a case would be invalid sql inside the template, and this is now much easier to diagnose.

Version 4.1.6 [DEVEL] (rgerhards), 2009-04-07

• added new “csv” property replacer options to enable simple creation of CSV-formatted outputs (format from RFC4180 is used)
• implemented function support in RainerScript. That means the engine parses and compile functions, as well as executes a few build-in ones. Dynamic loading and registration of functions is not yet supported – but we now have a good foundation to do that later on.
• implemented the strlen() RainerScript function
• added a template output module
• added -T rsyslogd command line option, enables to specify a directory where to chroot() into on startup. This is NOT a security feature but introduced to support testing. Thus, -T does not make sure chroot() is used in a secure way. (may be removed later)
• added omstdout module for testing purposes. Spits out all messages to stdout – no config option, no other features
• added a parser testing suite (still needs to be extended, but a good start)
• modified $ModLoad statement so that for modules whom’s name starts with
  a dot, no path is prepended (this enables relative-pathes and should not break any valid current config)

• fixed a bug that caused action retries not to work correctly situation was only cleared by a restart
• bugfix: closed dynafile was potentially never written until another dynafile name was generated – potential loss of messages
• improved omfile so that it properly suspends itself if there is an i/o or file name generation error. This enables it to be used with the full high availability features of rsyslog’s engine
• bugfix: fixed some segaults on Solaris, where vsprintf() does not check for NULL pointers
• improved performance of regexp-based filters. Thanks to Arnaud Cornet for providing the idea and initial patch.
• added a new way how output plugins may be passed parameters. This is more effcient for some outputs. They new can receive fields not only as a single string but rather in an array where each string is seperated.
• added (some) developer documentation for output plugin interface
• bugfix: potential abort with DA queue after high watermark is reached There exists a race condition that can lead to a segfault. Thanks go to vbernetr, who performed the analysis and provided patch, which I only tweaked a very little bit.
• bugfix: imtcp did incorrectly parse hostname/tag Thanks to Luis Fernando Muñoz Mejías for the patch.

Version 4.1.5 [DEVEL] (rgerhards), 2009-03-11

• bugfix: parser did not correctly parse fields in UDP-received messages
• added ERE support in filter conditions –
  new comparison operation “ereregex”

• added new config directive $RepeatedMsgContainsOriginalMsg so that the
  “last message repeated n times” messages, if generated, may
  have an alternate format that contains the message that is being repeated