800 lines
31 KiB
Scheme
800 lines
31 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2015 David Thompson <davet@gnu.org>
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;;; Copyright © 2015-2016, 2022-2023 Ludovic Courtès <ludo@gnu.org>
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;;; Copyright © 2016 Leo Famulari <leo@famulari.name>
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;;; Copyright © 2017 Christopher Baines <mail@cbaines.net>
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;;; Copyright © 2018 Clément Lassieur <clement@lassieur.org>
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;;; Copyright © 2018 Julien Lepiller <julien@lepiller.eu>
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;;; Copyright © 2019 Robert Vollmert <rob@vllmrt.net>
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;;; Copyright © 2020, 2022 Marius Bakke <marius@gnu.org>
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;;; Copyright © 2021 David Larsson <david.larsson@selfhosted.xyz>
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;;; Copyright © 2021 Aljosha Papsch <ep@stern-data.com>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (gnu services databases)
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#:use-module (gnu services)
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#:use-module (gnu services shepherd)
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#:use-module (gnu system shadow)
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#:use-module (gnu packages admin)
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#:use-module (gnu packages base)
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#:use-module (gnu packages databases)
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#:use-module (guix build-system trivial)
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#:use-module (guix build union)
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#:use-module (guix deprecation)
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#:use-module (guix modules)
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#:use-module (guix packages)
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#:use-module (guix records)
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#:use-module (guix gexp)
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#:use-module (srfi srfi-1)
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#:use-module (ice-9 match)
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#:export (postgresql-config-file
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postgresql-config-file?
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postgresql-config-file-log-destination
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postgresql-config-file-hba-file
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postgresql-config-file-ident-file
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postgresql-config-file-socket-directory
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postgresql-config-file-extra-config
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postgresql-configuration
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postgresql-configuration?
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postgresql-configuration-postgresql
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postgresql-configuration-port
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postgresql-configuration-locale
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postgresql-configuration-file
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postgresql-configuration-log-directory
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postgresql-configuration-data-directory
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postgresql-configuration-extension-packages
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postgresql-service
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postgresql-service-type
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postgresql-role
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postgresql-role?
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postgresql-role-name
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postgresql-role-permissions
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postgresql-role-create-database?
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postgresql-role-configuration
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postgresql-role-configuration?
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postgresql-role-configuration-host
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postgresql-role-configuration-roles
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postgresql-role-service-type
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memcached-service-type
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memcached-configuration
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memcached-configuration?
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memcached-configuration-memecached
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memcached-configuration-interfaces
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memcached-configuration-tcp-port
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memcached-configuration-udp-port
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memcached-configuration-additional-options
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mysql-service
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mysql-service-type
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mysql-configuration
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mysql-configuration?
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redis-configuration
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redis-configuration?
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redis-service-type))
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;;; Commentary:
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;;;
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;;; Database services.
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;;;
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;;; Code:
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(define %default-postgres-hba
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(plain-file "pg_hba.conf"
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"
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local all all peer
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host all all 127.0.0.1/32 md5
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host all all ::1/128 md5"))
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(define %default-postgres-ident
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(plain-file "pg_ident.conf"
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"# MAPNAME SYSTEM-USERNAME PG-USERNAME"))
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(define-record-type* <postgresql-config-file>
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postgresql-config-file make-postgresql-config-file
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postgresql-config-file?
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(log-destination postgresql-config-file-log-destination
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(default "syslog"))
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(hba-file postgresql-config-file-hba-file
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(default %default-postgres-hba))
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(ident-file postgresql-config-file-ident-file
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(default %default-postgres-ident))
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(socket-directory postgresql-config-file-socket-directory
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(default "/var/run/postgresql"))
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(extra-config postgresql-config-file-extra-config
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(default '())))
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(define-gexp-compiler (postgresql-config-file-compiler
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(file <postgresql-config-file>) system target)
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(match file
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(($ <postgresql-config-file> log-destination hba-file
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ident-file socket-directory
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extra-config)
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;; See: https://www.postgresql.org/docs/current/config-setting.html.
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(define (format-value value)
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(cond
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((boolean? value)
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(list (if value "on" "off")))
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((number? value)
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(list (number->string value)))
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(else
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(list "'" value "'"))))
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(define contents
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(append-map
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(match-lambda
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((key) '())
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((key . #f) '())
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((key values ...)
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`(,key " = " ,@(append-map format-value values) "\n")))
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`(("log_destination" ,log-destination)
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("hba_file" ,hba-file)
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("ident_file" ,ident-file)
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,@(if socket-directory
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`(("unix_socket_directories" ,socket-directory))
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'())
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,@extra-config)))
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(gexp->derivation
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"postgresql.conf"
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#~(call-with-output-file (ungexp output "out")
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(lambda (port)
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(display
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(string-append #$@contents)
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port)))
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#:local-build? #t))))
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(define-record-type* <postgresql-configuration>
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postgresql-configuration make-postgresql-configuration
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postgresql-configuration?
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(postgresql postgresql-configuration-postgresql ;file-like
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(default postgresql-10))
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(port postgresql-configuration-port
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(default 5432))
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(locale postgresql-configuration-locale
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(default "en_US.utf8"))
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(config-file postgresql-configuration-file
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(default (postgresql-config-file)))
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(log-directory postgresql-configuration-log-directory
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(default "/var/log/postgresql"))
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(data-directory postgresql-configuration-data-directory
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(default "/var/lib/postgresql/data"))
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(extension-packages postgresql-configuration-extension-packages
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(default '()))
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(create-account? postgresql-configuration-create-account?
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(default #t))
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(uid postgresql-configuration-uid
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(default #f))
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(gid postgresql-configuration-gid
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(default #f)))
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(define (create-postgresql-account config)
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(match-record config <postgresql-configuration>
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(create-account? uid gid)
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(if (not create-account?) '()
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(list (user-group
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(name "postgres")
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(id gid)
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(system? #t))
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(user-account
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(name "postgres")
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(group "postgres")
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(system? #t)
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(uid uid)
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(comment "PostgreSQL server user")
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(home-directory "/var/empty")
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(shell (file-append shadow "/sbin/nologin")))))))
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(define (final-postgresql postgresql extension-packages)
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(if (null? extension-packages)
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postgresql
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(package
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(inherit postgresql)
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(source #f)
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(build-system trivial-build-system)
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(arguments
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`(#:modules ((guix build utils) (guix build union))
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#:builder
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(begin
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(use-modules (guix build utils) (guix build union) (srfi srfi-26))
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(union-build (assoc-ref %outputs "out")
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(map (lambda (input) (cdr input))
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%build-inputs))
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#t)))
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(inputs
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`(("postgresql" ,postgresql)
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,@(map (lambda (extension) (list "extension" extension))
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extension-packages))))))
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(define postgresql-activation
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(match-lambda
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(($ <postgresql-configuration> postgresql port locale config-file
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log-directory data-directory
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extension-packages)
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#~(begin
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(use-modules (guix build utils)
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(ice-9 match))
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(let ((user (getpwnam "postgres"))
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(initdb (string-append
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#$(final-postgresql postgresql
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extension-packages)
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"/bin/initdb"))
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(initdb-args
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(append
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(if #$locale
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(list (string-append "--locale=" #$locale))
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'()))))
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;; Create db state directory.
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(mkdir-p #$data-directory)
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(chown #$data-directory (passwd:uid user) (passwd:gid user))
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;; Create the socket directory.
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(let ((socket-directory
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#$(postgresql-config-file-socket-directory config-file)))
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(when (string? socket-directory)
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(mkdir-p socket-directory)
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(chown socket-directory (passwd:uid user) (passwd:gid user))))
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;; Create the log directory.
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(when (string? #$log-directory)
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(mkdir-p #$log-directory)
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(chown #$log-directory (passwd:uid user) (passwd:gid user)))
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;; Drop privileges and init state directory in a new
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;; process. Wait for it to finish before proceeding.
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(match (primitive-fork)
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(0
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;; Exit with a non-zero status code if an exception is thrown.
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(dynamic-wind
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(const #t)
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(lambda ()
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(setgid (passwd:gid user))
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(setuid (passwd:uid user))
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(primitive-exit
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(apply system*
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initdb
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"-D"
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#$data-directory
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initdb-args)))
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(lambda ()
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(primitive-exit 1))))
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(pid (waitpid pid))))))))
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(define postgresql-shepherd-service
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(match-lambda
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(($ <postgresql-configuration> postgresql port locale config-file
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log-directory data-directory
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extension-packages)
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(let* ((pg_ctl-wrapper
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;; Wrapper script that switches to the 'postgres' user before
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;; launching daemon.
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(program-file
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"pg_ctl-wrapper"
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#~(begin
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(use-modules (ice-9 match)
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(ice-9 format))
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(match (command-line)
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((_ mode)
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(let ((user (getpwnam "postgres"))
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(pg_ctl #$(file-append
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(final-postgresql postgresql
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extension-packages)
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"/bin/pg_ctl"))
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(options (format #f "--config-file=~a -p ~d"
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#$config-file #$port)))
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(setgid (passwd:gid user))
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(setuid (passwd:uid user))
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(execl pg_ctl pg_ctl "-D" #$data-directory
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#$@(if (string? log-directory)
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(list "-l"
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(string-append log-directory
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"/pg_ctl.log"))
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'())
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"-o" options
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mode)))))))
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(pid-file (in-vicinity data-directory "postmaster.pid"))
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(action (lambda args
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#~(lambda _
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(invoke #$pg_ctl-wrapper #$@args)
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(match '#$args
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(("start")
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(call-with-input-file #$pid-file read))
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(_ #t))))))
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(list (shepherd-service
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(provision '(postgres postgresql))
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(documentation "Run the PostgreSQL daemon.")
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(requirement '(user-processes loopback syslogd))
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(modules `((ice-9 match)
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,@%default-modules))
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(actions (list (shepherd-configuration-action config-file)))
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(start (action "start"))
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(stop (action "stop"))))))))
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(define postgresql-service-type
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(service-type
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(name 'postgresql)
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(extensions
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(list (service-extension shepherd-root-service-type
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postgresql-shepherd-service)
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(service-extension activation-service-type
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postgresql-activation)
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(service-extension account-service-type
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create-postgresql-account)
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(service-extension
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profile-service-type
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(compose list postgresql-configuration-postgresql))))
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(default-value (postgresql-configuration))
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(description "Run the PostgreSQL database server.")))
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(define-deprecated (postgresql-service #:key (postgresql postgresql)
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(port 5432)
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(locale "en_US.utf8")
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(config-file (postgresql-config-file))
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(data-directory
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"/var/lib/postgresql/data")
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(extension-packages '()))
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postgresql-service-type
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"Return a service that runs @var{postgresql}, the PostgreSQL database
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server.
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The PostgreSQL daemon loads its runtime configuration from @var{config-file}
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and stores the database cluster in @var{data-directory}."
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(service postgresql-service-type
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(postgresql-configuration
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(postgresql postgresql)
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(port port)
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(locale locale)
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(config-file config-file)
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(data-directory data-directory)
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(extension-packages extension-packages))))
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(define-record-type* <postgresql-role>
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postgresql-role make-postgresql-role
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postgresql-role?
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(name postgresql-role-name) ;string
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(permissions postgresql-role-permissions
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(default '(createdb login))) ;list
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(create-database? postgresql-role-create-database? ;boolean
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(default #f))
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(encoding postgresql-role-encoding ;string
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(default "UTF8"))
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(collation postgresql-role-collation ;string
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(default "en_US.utf8"))
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(ctype postgresql-role-ctype ;string
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(default "en_US.utf8"))
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(template postgresql-role-template ;string
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(default "template1")))
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(define-record-type* <postgresql-role-configuration>
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postgresql-role-configuration make-postgresql-role-configuration
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postgresql-role-configuration?
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(host postgresql-role-configuration-host ;string
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(default "/var/run/postgresql"))
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(log postgresql-role-configuration-log ;string
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(default "/var/log/postgresql_roles.log"))
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(roles postgresql-role-configuration-roles
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(default '()))) ;list
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(define (postgresql-create-roles config)
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;; See: https://www.postgresql.org/docs/current/sql-createrole.html for the
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;; complete permissions list.
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(define (format-permissions permissions)
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(let ((dict '(bypassrls createdb createrole login replication superuser)))
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(string-join (filter-map (lambda (permission)
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(and (member permission dict)
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(string-upcase
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(symbol->string permission))))
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permissions)
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" ")))
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(define (roles->queries roles)
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(apply mixed-text-file "queries"
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(append-map
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(lambda (role)
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(match-record role <postgresql-role>
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(name permissions create-database? encoding collation ctype
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template)
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`("SELECT NOT(EXISTS(SELECT 1 FROM pg_catalog.pg_roles WHERE \
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rolname = '" ,name "')) as not_exists;\n"
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"\\gset\n"
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"\\if :not_exists\n"
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"CREATE ROLE \"" ,name "\""
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" WITH " ,(format-permissions permissions)
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";\n"
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,@(if create-database?
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`("CREATE DATABASE \"" ,name "\""
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" OWNER \"" ,name "\"\n"
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" ENCODING '" ,encoding "'\n"
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" LC_COLLATE '" ,collation "'\n"
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" LC_CTYPE '" ,ctype "'\n"
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" TEMPLATE " ,template ";")
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'())
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"\\endif\n")))
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roles)))
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(let ((host (postgresql-role-configuration-host config))
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(roles (postgresql-role-configuration-roles config)))
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#~(let ((psql #$(file-append postgresql "/bin/psql")))
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(list psql "-a" "-h" #$host "-f" #$(roles->queries roles)))))
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(define (postgresql-role-shepherd-service config)
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(match-record config <postgresql-role-configuration>
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(log)
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(list (shepherd-service
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(requirement '(postgres))
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(provision '(postgres-roles))
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(one-shot? #t)
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(start
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#~(lambda args
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(let ((pid (fork+exec-command
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#$(postgresql-create-roles config)
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#:user "postgres"
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#:group "postgres"
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#:log-file #$log)))
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(zero? (cdr (waitpid pid))))))
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(documentation "Create PostgreSQL roles.")))))
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(define postgresql-role-service-type
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(service-type (name 'postgresql-role)
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(extensions
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(list (service-extension shepherd-root-service-type
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postgresql-role-shepherd-service)))
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(compose concatenate)
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(extend (lambda (config extended-roles)
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(match-record config <postgresql-role-configuration>
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(host roles)
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(postgresql-role-configuration
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(host host)
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(roles (append roles extended-roles))))))
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(default-value (postgresql-role-configuration))
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(description "Ensure the specified PostgreSQL roles are
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created after the PostgreSQL database is started.")))
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;;;
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;;; Memcached
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;;;
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(define-record-type* <memcached-configuration>
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memcached-configuration make-memcached-configuration
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memcached-configuration?
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(memcached memcached-configuration-memcached ;file-like
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(default memcached))
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(interfaces memcached-configuration-interfaces
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(default '("0.0.0.0")))
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(tcp-port memcached-configuration-tcp-port
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(default 11211))
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(udp-port memcached-configuration-udp-port
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(default 11211))
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(additional-options memcached-configuration-additional-options
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(default '())))
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(define %memcached-accounts
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(list (user-group (name "memcached") (system? #t))
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(user-account
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(name "memcached")
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(group "memcached")
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(system? #t)
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(comment "Memcached server user")
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(home-directory "/var/empty")
|
||
(shell (file-append shadow "/sbin/nologin")))))
|
||
|
||
(define memcached-activation
|
||
#~(begin
|
||
(use-modules (guix build utils))
|
||
(let ((user (getpwnam "memcached")))
|
||
(mkdir-p "/var/run/memcached")
|
||
(chown "/var/run/memcached"
|
||
(passwd:uid user) (passwd:gid user)))))
|
||
|
||
(define memcached-shepherd-service
|
||
(match-lambda
|
||
(($ <memcached-configuration> memcached interfaces tcp-port udp-port
|
||
additional-options)
|
||
(list (shepherd-service
|
||
(provision '(memcached))
|
||
(documentation "Run the Memcached daemon.")
|
||
(requirement '(user-processes loopback))
|
||
(start #~(make-forkexec-constructor
|
||
`(#$(file-append memcached "/bin/memcached")
|
||
"-l" #$(string-join interfaces ",")
|
||
"-p" #$(number->string tcp-port)
|
||
"-U" #$(number->string udp-port)
|
||
"--daemon"
|
||
;; Memcached changes to the memcached user prior to
|
||
;; writing the pid file, so write it to a directory
|
||
;; that memcached owns.
|
||
"-P" "/var/run/memcached/pid"
|
||
"-u" "memcached"
|
||
,#$@additional-options)
|
||
#:log-file "/var/log/memcached"
|
||
#:pid-file "/var/run/memcached/pid"))
|
||
(stop #~(make-kill-destructor)))))))
|
||
|
||
(define memcached-service-type
|
||
(service-type (name 'memcached)
|
||
(extensions
|
||
(list (service-extension shepherd-root-service-type
|
||
memcached-shepherd-service)
|
||
(service-extension activation-service-type
|
||
(const memcached-activation))
|
||
(service-extension account-service-type
|
||
(const %memcached-accounts))))
|
||
(default-value (memcached-configuration))
|
||
(description "Run @command{memcached}, a daemon that provides
|
||
an in-memory caching service, intended for use by dynamic web
|
||
applications.")))
|
||
|
||
|
||
;;;
|
||
;;; MySQL.
|
||
;;;
|
||
|
||
(define-record-type* <mysql-configuration>
|
||
mysql-configuration make-mysql-configuration
|
||
mysql-configuration?
|
||
(mysql mysql-configuration-mysql (default mariadb))
|
||
(bind-address mysql-configuration-bind-address (default "127.0.0.1"))
|
||
(port mysql-configuration-port (default 3306))
|
||
(socket mysql-configuration-socket (default "/run/mysqld/mysqld.sock"))
|
||
(datadir mysql-configuration-datadir (default "/var/lib/mysql"))
|
||
(extra-content mysql-configuration-extra-content (default ""))
|
||
(extra-environment mysql-configuration-extra-environment (default #~'()))
|
||
(auto-upgrade? mysql-configuration-auto-upgrade? (default #t)))
|
||
|
||
(define %mysql-accounts
|
||
(list (user-group
|
||
(name "mysql")
|
||
(system? #t))
|
||
(user-account
|
||
(name "mysql")
|
||
(group "mysql")
|
||
(system? #t)
|
||
(home-directory "/var/empty")
|
||
(shell (file-append shadow "/sbin/nologin")))))
|
||
|
||
(define mysql-configuration-file
|
||
(match-lambda
|
||
(($ <mysql-configuration> mysql bind-address port socket datadir extra-content)
|
||
(mixed-text-file "my.cnf" "[mysqld]
|
||
datadir=" datadir "
|
||
socket=" socket "
|
||
bind-address=" bind-address "
|
||
port=" (number->string port) "
|
||
" extra-content "
|
||
"))))
|
||
|
||
(define (mysqld-wrapper config)
|
||
"Start mysqld, and initialize the system tables if necessary."
|
||
(program-file
|
||
"mysqld-wrapper"
|
||
(with-imported-modules (source-module-closure
|
||
'((guix build utils)))
|
||
(let ((mysql (mysql-configuration-mysql config))
|
||
(datadir (mysql-configuration-datadir config))
|
||
(my.cnf (mysql-configuration-file config)))
|
||
#~(begin
|
||
(use-modules (guix build utils))
|
||
(let* ((mysqld (string-append #$mysql "/bin/mysqld"))
|
||
(user (getpwnam "mysql"))
|
||
(uid (passwd:uid user))
|
||
(gid (passwd:gid user))
|
||
(rundir "/run/mysqld"))
|
||
(mkdir-p #$datadir)
|
||
(chown #$datadir uid gid)
|
||
(mkdir-p rundir)
|
||
(chown rundir uid gid)
|
||
(unless (file-exists? (string-append #$datadir "/mysql"))
|
||
(let ((init (system* #$(mysql-install config))))
|
||
(unless (= 0 (status:exit-val init))
|
||
(throw 'system-error "MySQL initialization failed."))))
|
||
;; Drop privileges and start the server.
|
||
(setgid gid) (setuid uid)
|
||
(execl mysqld mysqld
|
||
(string-append "--defaults-file=" #$my.cnf))))))))
|
||
|
||
(define (mysql-shepherd-service config)
|
||
(list (shepherd-service
|
||
(provision '(mysql))
|
||
(requirement '(user-processes))
|
||
(documentation "Run the MySQL server.")
|
||
(actions (list (shepherd-configuration-action
|
||
(mysql-configuration-file config))))
|
||
(start (let ((mysql (mysql-configuration-mysql config))
|
||
(extra-env (mysql-configuration-extra-environment config))
|
||
(my.cnf (mysql-configuration-file config)))
|
||
#~(make-forkexec-constructor
|
||
(list #$(mysqld-wrapper config))
|
||
#:log-file "/var/log/mysqld.log"
|
||
#:environment-variables #$extra-env)))
|
||
(stop #~(make-kill-destructor)))))
|
||
|
||
(define (mysql-install config)
|
||
"Install MySQL system database and secure the installation."
|
||
(let ((mysql (mysql-configuration-mysql config))
|
||
(my.cnf (mysql-configuration-file config)))
|
||
(program-file
|
||
"mysql-install"
|
||
(with-imported-modules (source-module-closure
|
||
'((guix build utils)))
|
||
#~(begin
|
||
(use-modules (guix build utils))
|
||
;; Make sed, mkdir, uname, etc available for mariadb-install-db.
|
||
(set-path-environment-variable "PATH" '("bin")
|
||
(list #$sed #$coreutils))
|
||
(if (string=? "mariadb" #$(package-name mysql))
|
||
;; For MariaDB.
|
||
(system* #$(file-append mysql "/bin/mariadb-install-db")
|
||
(string-append "--defaults-file=" #$my.cnf)
|
||
"--skip-test-db"
|
||
"--user=mysql")
|
||
;; For MySQL.
|
||
(system* #$(file-append mysql "/bin/mysqld")
|
||
(string-append "--defaults-file=" #$my.cnf)
|
||
"--initialize"
|
||
"--user=mysql")))))))
|
||
|
||
(define (mysql-upgrade-wrapper config)
|
||
;; The MySQL socket and PID file may appear before the server is ready to
|
||
;; accept connections. Ensure the socket is responsive before attempting
|
||
;; to run the upgrade script.
|
||
(let ((mysql (mysql-configuration-mysql config))
|
||
(socket-file (mysql-configuration-socket config))
|
||
(config-file (mysql-configuration-file config)))
|
||
(program-file
|
||
"mysql-upgrade-wrapper"
|
||
#~(begin
|
||
(let ((mysql-upgrade #$(file-append mysql "/bin/mysql_upgrade"))
|
||
(timeout 20))
|
||
(begin
|
||
(let loop ((i 0))
|
||
(catch 'system-error
|
||
(lambda ()
|
||
(let ((sock (socket PF_UNIX SOCK_STREAM 0)))
|
||
(connect sock AF_UNIX #$socket-file)
|
||
(close-port sock)
|
||
;; The socket is ready!
|
||
(execl mysql-upgrade mysql-upgrade
|
||
(string-append "--defaults-file=" #$config-file)
|
||
"--user=mysql")))
|
||
(lambda args
|
||
(if (< i timeout)
|
||
(begin
|
||
(sleep 1)
|
||
(loop (+ 1 i)))
|
||
;; No luck, give up.
|
||
(throw 'timeout-error
|
||
"MySQL server did not appear in time!")))))))))))
|
||
|
||
(define (mysql-upgrade-shepherd-service config)
|
||
(list (shepherd-service
|
||
(provision '(mysql-upgrade))
|
||
(requirement '(mysql))
|
||
(one-shot? #t)
|
||
(documentation "Upgrade MySQL database schemas.")
|
||
(start #~(make-forkexec-constructor
|
||
(list #$(mysql-upgrade-wrapper config))
|
||
#:user "mysql" #:group "mysql"
|
||
#:log-file "/var/log/mysql_upgrade.log")))))
|
||
|
||
(define (mysql-shepherd-services config)
|
||
(let ((mysql-services (mysql-shepherd-service config)))
|
||
(if (mysql-configuration-auto-upgrade? config)
|
||
(append mysql-services
|
||
(mysql-upgrade-shepherd-service config))
|
||
mysql-services)))
|
||
|
||
(define mysql-service-type
|
||
(service-type
|
||
(name 'mysql)
|
||
(extensions
|
||
(list (service-extension account-service-type
|
||
(const %mysql-accounts))
|
||
(service-extension shepherd-root-service-type
|
||
mysql-shepherd-services)))
|
||
(default-value (mysql-configuration))
|
||
(description "Run the MySQL or MariaDB database server,
|
||
@command{mysqld}.")))
|
||
|
||
(define-deprecated (mysql-service #:key (config (mysql-configuration)))
|
||
mysql-service-type
|
||
(service mysql-service-type config))
|
||
|
||
|
||
;;;
|
||
;;; Redis
|
||
;;;
|
||
|
||
(define-record-type* <redis-configuration>
|
||
redis-configuration make-redis-configuration
|
||
redis-configuration?
|
||
(redis redis-configuration-redis ;file-like
|
||
(default redis))
|
||
(bind redis-configuration-bind
|
||
(default "127.0.0.1"))
|
||
(port redis-configuration-port
|
||
(default 6379))
|
||
(working-directory redis-configuration-working-directory
|
||
(default "/var/lib/redis"))
|
||
(config-file redis-configuration-config-file
|
||
(default #f)))
|
||
|
||
(define (default-redis.conf bind port working-directory)
|
||
(mixed-text-file "redis.conf"
|
||
"bind " bind "\n"
|
||
"port " (number->string port) "\n"
|
||
"dir " working-directory "\n"
|
||
"daemonize no\n"))
|
||
|
||
(define %redis-accounts
|
||
(list (user-group (name "redis") (system? #t))
|
||
(user-account
|
||
(name "redis")
|
||
(group "redis")
|
||
(system? #t)
|
||
(comment "Redis server user")
|
||
(home-directory "/var/empty")
|
||
(shell (file-append shadow "/sbin/nologin")))))
|
||
|
||
(define redis-activation
|
||
(match-lambda
|
||
(($ <redis-configuration> redis bind port working-directory config-file)
|
||
#~(begin
|
||
(use-modules (guix build utils)
|
||
(ice-9 match))
|
||
|
||
(let ((user (getpwnam "redis")))
|
||
(mkdir-p #$working-directory)
|
||
(chown #$working-directory (passwd:uid user) (passwd:gid user)))))))
|
||
|
||
(define redis-shepherd-service
|
||
(match-lambda
|
||
(($ <redis-configuration> redis bind port working-directory config-file)
|
||
(let ((config-file
|
||
(or config-file
|
||
(default-redis.conf bind port working-directory))))
|
||
(list (shepherd-service
|
||
(provision '(redis))
|
||
(documentation "Run the Redis daemon.")
|
||
(requirement '(user-processes syslogd))
|
||
(actions (list (shepherd-configuration-action config-file)))
|
||
(start #~(make-forkexec-constructor
|
||
'(#$(file-append redis "/bin/redis-server")
|
||
#$config-file)
|
||
#:user "redis"
|
||
#:group "redis"))
|
||
(stop #~(make-kill-destructor))))))))
|
||
|
||
(define redis-service-type
|
||
(service-type (name 'redis)
|
||
(extensions
|
||
(list (service-extension shepherd-root-service-type
|
||
redis-shepherd-service)
|
||
(service-extension activation-service-type
|
||
redis-activation)
|
||
(service-extension account-service-type
|
||
(const %redis-accounts))))
|
||
(default-value (redis-configuration))
|
||
(description "Run Redis, a caching key/value store.")))
|