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Modularize log_connections output

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Convert the boolean log_connections GUC into a list GUC comprised of the
connection aspects to log.

This gives users more control over the volume and kind of connection
logging.

The current log_connections options are 'receipt', 'authentication', and
'authorization'. The empty string disables all connection logging. 'all'
enables all available connection logging.

For backwards compatibility, the most common values for the
log_connections boolean are still supported (on, off, 1, 0, true, false,
yes, no). Note that previously supported substrings of on, off, true,
false, yes, and no are no longer supported.

Author: Melanie Plageman <melanieplageman@gmail.com>
Reviewed-by: Bertrand Drouvot <bertranddrouvot.pg@gmail.com>
Reviewed-by: Fujii Masao <masao.fujii@oss.nttdata.com>
Reviewed-by: Daniel Gustafsson <daniel@yesql.se>
Discussion: https://postgr.es/m/flat/CAAKRu_b_smAHK0ZjrnL5GRxnAVWujEXQWpLXYzGbmpcZd3nLYw%40mail.gmail.com
This commit is contained in:
Melanie Plageman
2025-03-12 11:33:01 -04:00
parent f554a95379
commit 9219093cab
12 changed files with 331 additions and 25 deletions
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8
src/backend/utils/misc/postgresql.conf.sample
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@ -21,7 +21,7 @@
# require a server shutdown and restart to take effect.
#
# Any parameter can also be given as a command-line option to the server, e.g.,
# "postgres -c log_connections=on". Some parameters can be changed at run time
# "postgres -c log_connections=all". Some parameters can be changed at run time
# with the "SET" SQL command.
#
# Memory units: B = bytes Time units: us = microseconds
@ -578,9 +578,11 @@
# actions running at least this number
# of milliseconds.
#log_checkpoints = on
#log_connections = off
#log_connections = '' # log aspects of connection setup
# options include receipt, authentication, authorization,
# and all to log all of these aspects
#log_disconnections = off
#log_duration = off
#log_duration = off # log statement duration
#log_error_verbosity = default # terse, default, or verbose messages
#log_hostname = off
#log_line_prefix = '%m [%p] ' # special values: