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services: postgresql: Use pg_ctl to start and stop postgres. 

Fixes <https://bugs.gnu.org/29992>.

* gnu/services/databases.scm (postgresql-shepherd-service): Replace
make-forkexec-constructor and make-kill-destructor with pg_ctl.
This commit is contained in:
Clément Lassieur 2018-01-15 09:35:59 +01:00
parent 45b486984d
commit 5ee4cd69c4
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1 changed files with 24 additions and 16 deletions
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40
gnu/services/databases.scm
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@ -3,6 +3,7 @@
;;; Copyright © 2015, 2016 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2016 Leo Famulari <leo@famulari.name>
;;; Copyright © 2017 Christopher Baines <mail@cbaines.net>
;;; Copyright © 2018 Clément Lassieur <clement@lassieur.org>
;;;
;;; This file is part of GNU Guix.
;;;
@ -147,26 +148,33 @@ host all all ::1/128 trust"))
(define postgresql-shepherd-service
(match-lambda
(($ <postgresql-configuration> postgresql port locale config-file data-directory)
(let ((start-script
;; Wrapper script that switches to the 'postgres' user before
;; launching daemon.
(program-file "start-postgres"
#~(let ((user (getpwnam "postgres"))
(postgres (string-append #$postgresql
"/bin/postgres")))
(setgid (passwd:gid user))
(setuid (passwd:uid user))
(system* postgres
(string-append "--config-file="
#$config-file)
"-p" (number->string #$port)
"-D" #$data-directory)))))
(let* ((pg_ctl-wrapper
;; Wrapper script that switches to the 'postgres' user before
;; launching daemon.
(program-file
"pg_ctl-wrapper"
#~(begin
(use-modules (ice-9 match)
(ice-9 format))
(match (command-line)
((_ mode)
(let ((user (getpwnam "postgres"))
(pg_ctl #$(file-append postgresql "/bin/pg_ctl"))
(options (format #f "--config-file=~a -p ~d"
#$config-file #$port)))
(setgid (passwd:gid user))
(setuid (passwd:uid user))
(execl pg_ctl pg_ctl "-D" #$data-directory "-o" options
mode)))))))
(action (lambda args
#~(lambda _
(invoke #$pg_ctl-wrapper #$@args)))))
(list (shepherd-service
(provision '(postgres))
(documentation "Run the PostgreSQL daemon.")
(requirement '(user-processes loopback syslogd))
(start #~(make-forkexec-constructor #$start-script))
(stop #~(make-kill-destructor))))))))
(start (action "start"))
(stop (action "stop"))))))))
(define postgresql-service-type
(service-type (name 'postgresql)