GNU bug report logs - #71263
Add additional fields to oci-container-configuration

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From: Zheng Junjie <zhengjunjie <at> iscas.ac.cn>
To: 71263 <at> debbugs.gnu.org
Cc: goodoldpaul <at> autistici.org, maxim.cournoyer <at> gmail.com, ludo <at> gnu.org, pelzflorian <at> pelzflorian.de, matt <at> excalamus.com
Subject: [bug#71263] [PATCH v2 2/5] gnu: docker: Allow setting Shepherd log-file in oci-container-configuration.
Date: Fri, 05 Jul 2024 15:35:49 +0800

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Giacomo Leidi via Guix-patches via <guix-patches <at> gnu.org> writes:

> * gnu/services/docker.scm (oci-container-configuration)
> [log-file]: New field;
> (oci-container-shepherd-service): use it.
>
> * doc/guix.texi: Document it.
>
> Change-Id: Icad29ac6342b6f5bafc0d9be13a93cee99674185
> ---
>  doc/guix.texi           |  5 +++++
>  gnu/services/docker.scm | 19 +++++++++++++++----
>  2 files changed, 20 insertions(+), 4 deletions(-)
>
> diff --git a/doc/guix.texi b/doc/guix.texi
> index 5a06d7cdc5..40296fcd5f 100644
> --- a/doc/guix.texi
> +++ b/doc/guix.texi
> @@ -40698,6 +40698,11 @@ Miscellaneous Services
>  Set additional Shepherd services dependencies to the provisioned
>  Shepherd service.
>  
> +@item @code{log-file} (default: @code{""}) (type: string)
                         ^^^^^^^^^^^^^^^^^^^^
                         i remove it, because it is not "".
> +@item @code{log-file} (default: @code{""}) (type: string)
                                                     ^^^^^^
                                                     maybe-string
> +When @code{log-file} is set, it names the file to which the service's
> +standard output and standard error are redirected.  @code{log-file} is created
> +if it does not exist, otherwise it is appended to.
> +
>  @item @code{network} (default: @code{""}) (type: string)
>  Set a Docker network for the spawned container.
>  
> diff --git a/gnu/services/docker.scm b/gnu/services/docker.scm
> index cc1201508c..678e8b1139 100644
> --- a/gnu/services/docker.scm
> +++ b/gnu/services/docker.scm
> @@ -74,6 +74,7 @@ (define-module (gnu services docker)
>              oci-container-configuration-image
>              oci-container-configuration-provision
>              oci-container-configuration-requirement
> +            oci-container-configuration-log-file
>              oci-container-configuration-network
>              oci-container-configuration-ports
>              oci-container-configuration-volumes
> @@ -461,6 +462,11 @@ (define-configuration/no-serialization oci-container-configuration
>     (list-of-symbols '())
>     "Set additional Shepherd services dependencies to the provisioned Shepherd
>  service.")
> +  (log-file
> +   (maybe-string)
> +   "When @code{log-file} is set, it names the file to which the service’s
> +standard output and standard error are redirected.  @code{log-file} is created
> +if it does not exist, otherwise it is appended to.")
>    (network
>     (maybe-string)
>     "Set a Docker network for the spawned container.")
> @@ -669,12 +675,16 @@ (define (oci-container-shepherd-service config)
>           (host-environment
>            (oci-container-configuration-host-environment config))
>           (command (oci-container-configuration-command config))
> +         (log-file (oci-container-configuration-log-file config))
>           (provision (oci-container-configuration-provision config))
>           (requirement (oci-container-configuration-requirement config))
>           (image (oci-container-configuration-image config))
>           (image-reference (oci-image-reference image))
>           (options (oci-container-configuration->options config))
>           (name (guess-name provision image))
> +         (loader (if (oci-image? image)
> +                     (%oci-image-loader name image image-reference)
> +                     #f))
>           (extra-arguments
>            (oci-container-configuration-extra-arguments config)))
>  
> @@ -687,10 +697,8 @@ (define (oci-container-shepherd-service config)
>                          (if (oci-image? image) name image) "."))
>                        (start
>                         #~(lambda ()
> -                           #$@(if (oci-image? image)
> -                                  #~((invoke #$(%oci-image-loader
> -                                                name image image-reference)))
> -                                  #~())
> +                           (when #$(oci-image? image)
> +                             (invoke #$loader))

if (oci-image? image) return #f

```
(when #f
  (invoke #f))

```

This is noise in the file.

>                             (fork+exec-command
>                              ;; docker run [OPTIONS] IMAGE [COMMAND] [ARG...]
>                              (list #$docker "run" "--rm" "--name" #$name
> @@ -698,6 +706,9 @@ (define (oci-container-shepherd-service config)
>                                    #$image-reference #$@command)
>                              #:user #$user
>                              #:group #$group
> +                            #$@(if (maybe-value-set? log-file)
> +                                   (list #:log-file log-file)
> +                                   '())
>                              #:environment-variables
>                              (list #$@host-environment))))
>                        (stop

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