GNU bug report logs - #43920
[SHEPHERD PATCH] shepherd: Move log file to XDG_CACHE_DIR.

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Efraim Flashner <efraim <at> flashner.co.il>
Subject: bug#43920: closed (Re: [bug#43920] [SHEPHERD PATCH] shepherd:
 Move log file to XDG_CACHE_DIR.)
Date: Wed, 18 Nov 2020 21:36:02 +0000

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Your bug report

#43920: [SHEPHERD PATCH] shepherd: Move log file to XDG_CACHE_DIR.

which was filed against the guix-patches package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 43920 <at> debbugs.gnu.org.

-- 
43920: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=43920
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Ludovic Courtès <ludo <at> gnu.org>
To: Efraim Flashner <efraim <at> flashner.co.il>
Cc: Leo Prikler <leo.prikler <at> student.tugraz.at>,
 "Jan \(janneke\) Nieuwenhuizen" <janneke <at> gnu.org>, 43920-done <at> debbugs.gnu.org
Subject: Re: [bug#43920] [SHEPHERD PATCH] shepherd: Move log file to
 XDG_CACHE_DIR.
Date: Wed, 18 Nov 2020 22:35:43 +0100

Hi,

Ludovic Courtès <ludo <at> gnu.org> skribis:

> Efraim Flashner <efraim <at> flashner.co.il> skribis:
>
>> On October 24, 2020 4:15:33 PM UTC, "Ludovic Courtès" <ludo <at> gnu.org> wrote:
>
> [...]
>
>>>>> The previous location wasn’t perfect, but the proposed one isn’t
>>>>> great
>>>>> either: one can generally assume “rm -rf ~/.cache” won’t lose
>>>>> anything
>>>>> that cannot be reconstructed, and the log is something that cannot be
>>>>> reconstructed.
>
> [...]
>
>> I don't think it's really data, it's not like it belongs in something/share. As another data point keybase writes its (verbose) logs in .cache/keybase.
>
> To me the question whether it’s OK to lose the log.  In a way, storing
> the log in ~/.cache akin to storing it in /tmp.
>
> If we agree on that, then we have the choice between ~/.local/share
> aka. XDG_DATA_HOME (like Xorg does), or maybe using ~/.local/var/log or
> something similar that goes beyond XDG?

I pushed a variant of your patch that uses XDG_DATA_HOME instead:

  https://git.savannah.gnu.org/cgit/shepherd.git/commit/?id=c6382a6898f2851d78b675f209787c5ff9ad4320

There’s a now ‘%user-log-dir’ so it’ll be easier to adjust going
forward if we change our mind.

Thanks,
Ludo’.

[Message part 3 (message/rfc822, inline)]

From: Efraim Flashner <efraim <at> flashner.co.il>
To: guix-patches <at> gnu.org
Cc: Efraim Flashner <efraim <at> flashner.co.il>
Subject: [SHEPHERD PATCH] shepherd: Move log file to XDG_CACHE_DIR.
Date: Sun, 11 Oct 2020 12:20:17 +0300

* modules/shepherd/support.scm (%user-log-dir): New variable.
(user-default-log-file): Use it.
* doc/shepherd.texi: (Invoking shepherd): Adjust listed default log
file.
* tests/basic.sh: Adjust for separate log directory.
---
 doc/shepherd.texi            |  2 +-
 modules/shepherd/support.scm | 10 ++++++++--
 tests/basic.sh               |  4 ++++
 3 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/doc/shepherd.texi b/doc/shepherd.texi
index 696477e..0c3901e 100644
--- a/doc/shepherd.texi
+++ b/doc/shepherd.texi
@@ -417,7 +417,7 @@ permissions are not as expected.
 Log output into @var{file}.
 
 For unprivileged users, the default log file is
-@file{$XDG_CONFIG_HOME/shepherd/shepherd.log}.
+@file{$XDG_CACHE_DIR/shepherd/shepherd.log}.
 
 @cindex syslog
 When running as root, the default behavior is to connect to
diff --git a/modules/shepherd/support.scm b/modules/shepherd/support.scm
index cdb7b35..008b280 100644
--- a/modules/shepherd/support.scm
+++ b/modules/shepherd/support.scm
@@ -271,6 +271,12 @@ There is NO WARRANTY, to the extent permitted by law.")))
                      (string-append user-homedir "/.config"))
                  "/shepherd"))
 
+(define %user-log-dir
+  ;; Default log directory if shepherd is run as a normal user.
+  (string-append (or (getenv "XDG_CACHE_DIR")
+                     (string-append user-homedir "/.cache"))
+                 "/shepherd"))
+
 (define %user-runtime-dir
   ;; Default runtime directory if shepherd is run as a normal user.
   (string-append (or (getenv "XDG_RUNTIME_DIR")
@@ -302,8 +308,8 @@ TARGET should be a string representing a filepath + name."
 ;; Logging.
 (define (user-default-log-file)
   "Return the file name of the user's default log file."
-  (mkdir-p %user-config-dir #o700)
-  (string-append %user-config-dir "/shepherd.log"))
+  (mkdir-p %user-log-dir #o700)
+  (string-append %user-log-dir "/shepherd.log"))
 
 (define default-logfile-date-format
   ;; 'strftime' format string to prefix each entry in the log.
diff --git a/tests/basic.sh b/tests/basic.sh
index a6148fc..145c0d3 100644
--- a/tests/basic.sh
+++ b/tests/basic.sh
@@ -24,6 +24,7 @@ herd --version
 socket="t-socket-$$"
 conf="t-conf-$$"
 confdir="t-confdir-$$"
+cachedir="t-cachedir-$$"
 log="t-log-$$"
 stamp="t-stamp-$$"
 pid="t-pid-$$"
@@ -259,7 +260,9 @@ test -f "$log"
 
 # Set XDG_CONFIG_HOME for configuration files.
 export XDG_CONFIG_HOME=$confdir
+export XDG_CACHE_DIR=$cachedir
 mkdir -p $confdir/shepherd
+mkdir -p $cachedir/shepherd
 mv $conf $confdir/shepherd/init.scm
 rm -f "$pid" "$socket"
 shepherd -I -s "$socket" --pid="$pid" &
@@ -281,3 +284,4 @@ $herd stop root
 ! kill -0 $shepherd_pid
 
 rm -rf $confdir
+rm -rf $cachedir
-- 
2.28.0

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