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RE: [Proposal] Adding Log File Capability to pg_createsubscriber

Hayato Kuroda (Fujitsu) <kuroda.hayato@fujitsu.com>

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From: "Hayato Kuroda (Fujitsu)" <kuroda.hayato@fujitsu.com>
To: 'Peter Eisentraut' <peter@eisentraut.org>, Amit Kapila <amit.kapila16@gmail.com>, Gyan Sreejith <gyan.sreejith@gmail.com>
Cc: Peter Smith <smithpb2250@gmail.com>, shveta malik <shveta.malik@gmail.com>, Shlok Kyal <shlok.kyal.oss@gmail.com>, vignesh C <vignesh21@gmail.com>, Euler Taveira <euler@eulerto.com>, "pgsql-hackers@lists.postgresql.org" <pgsql-hackers@lists.postgresql.org>
Date: 2026-04-01T05:05:10Z
Lists: pgsql-hackers 
Dear Peter E.,

> Instead of creating a new logging API in pg_createsubscriber locally,
> why not extend logging.c to support a log file.

I had a concern to extend the common module. Do you have possible idea to use
pg_logging_set_logfile() on others? I cannot, tee command on linux seems enough
for others.

Best regards,
Hayato Kuroda
FUJITSU LIMITED

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

  1. pg_createsubscriber: Don't use MAXPGPATH

  2. pg_createsubscriber: Remove separate logfile_open() function

  3. pg_createsubscriber: Use logging.c log file callback

  4. Add log file support to logging.c

  5. pg_createsubscriber: Add -l/--logdir option to redirect output to files.

  6. pg_createsubscriber: Introduce module-specific logging functions.

  7. Fix another buglet in archive_waldump.c.