* gnu/services/databases.scm (<mysql-configuration>): New field. (mysql-configuration-file): Use it.
		
			
				
	
	
		
			650 lines
		
	
	
	
		
			24 KiB
		
	
	
	
		
			Scheme
		
	
	
	
	
	
			
		
		
	
	
			650 lines
		
	
	
	
		
			24 KiB
		
	
	
	
		
			Scheme
		
	
	
	
	
	
;;; GNU Guix --- Functional package management for GNU
 | 
						||
;;; Copyright © 2015 David Thompson <davet@gnu.org>
 | 
						||
;;; 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>
 | 
						||
;;; Copyright © 2018 Julien Lepiller <julien@lepiller.eu>
 | 
						||
;;; Copyright © 2019 Robert Vollmert <rob@vllmrt.net>
 | 
						||
;;;
 | 
						||
;;; This file is part of GNU Guix.
 | 
						||
;;;
 | 
						||
;;; GNU Guix is free software; you can redistribute it and/or modify it
 | 
						||
;;; under the terms of the GNU General Public License as published by
 | 
						||
;;; the Free Software Foundation; either version 3 of the License, or (at
 | 
						||
;;; your option) any later version.
 | 
						||
;;;
 | 
						||
;;; GNU Guix is distributed in the hope that it will be useful, but
 | 
						||
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
 | 
						||
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 | 
						||
;;; GNU General Public License for more details.
 | 
						||
;;;
 | 
						||
;;; You should have received a copy of the GNU General Public License
 | 
						||
;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
 | 
						||
 | 
						||
(define-module (gnu services databases)
 | 
						||
  #:use-module (gnu services)
 | 
						||
  #:use-module (gnu services shepherd)
 | 
						||
  #:use-module (gnu system shadow)
 | 
						||
  #:use-module (gnu packages admin)
 | 
						||
  #:use-module (gnu packages databases)
 | 
						||
  #:use-module (guix build-system trivial)
 | 
						||
  #:use-module (guix build union)
 | 
						||
  #:use-module (guix modules)
 | 
						||
  #:use-module (guix packages)
 | 
						||
  #:use-module (guix records)
 | 
						||
  #:use-module (guix gexp)
 | 
						||
  #:use-module (srfi srfi-1)
 | 
						||
  #:use-module (ice-9 match)
 | 
						||
  #:export (<postgresql-config-file>
 | 
						||
            postgresql-config-file
 | 
						||
            postgresql-config-file?
 | 
						||
            postgresql-config-file-log-destination
 | 
						||
            postgresql-config-file-hba-file
 | 
						||
            postgresql-config-file-ident-file
 | 
						||
            postgresql-config-file-extra-config
 | 
						||
 | 
						||
            <postgresql-configuration>
 | 
						||
            postgresql-configuration
 | 
						||
            postgresql-configuration?
 | 
						||
            postgresql-configuration-postgresql
 | 
						||
            postgresql-configuration-port
 | 
						||
            postgresql-configuration-locale
 | 
						||
            postgresql-configuration-file
 | 
						||
            postgresql-configuration-data-directory
 | 
						||
 | 
						||
            postgresql-service
 | 
						||
            postgresql-service-type
 | 
						||
 | 
						||
            memcached-service-type
 | 
						||
            <memcached-configuration>
 | 
						||
            memcached-configuration
 | 
						||
            memcached-configuration?
 | 
						||
            memcached-configuration-memecached
 | 
						||
            memcached-configuration-interfaces
 | 
						||
            memcached-configuration-tcp-port
 | 
						||
            memcached-configuration-udp-port
 | 
						||
            memcached-configuration-additional-options
 | 
						||
 | 
						||
            <mongodb-configuration>
 | 
						||
            mongodb-configuration
 | 
						||
            mongodb-configuration?
 | 
						||
            mongodb-configuration-mongodb
 | 
						||
            mongodb-configuration-config-file
 | 
						||
            mongodb-configuration-data-directory
 | 
						||
            mongodb-service-type
 | 
						||
 | 
						||
            mysql-service
 | 
						||
            mysql-service-type
 | 
						||
            mysql-configuration
 | 
						||
            mysql-configuration?
 | 
						||
 | 
						||
            redis-configuration
 | 
						||
            redis-configuration?
 | 
						||
            redis-service-type))
 | 
						||
 | 
						||
;;; Commentary:
 | 
						||
;;;
 | 
						||
;;; Database services.
 | 
						||
;;;
 | 
						||
;;; Code:
 | 
						||
 | 
						||
(define %default-postgres-hba
 | 
						||
  (plain-file "pg_hba.conf"
 | 
						||
              "
 | 
						||
local	all	all			peer
 | 
						||
host	all	all	127.0.0.1/32 	md5
 | 
						||
host	all	all	::1/128 	md5"))
 | 
						||
 | 
						||
(define %default-postgres-ident
 | 
						||
  (plain-file "pg_ident.conf"
 | 
						||
              "# MAPNAME       SYSTEM-USERNAME         PG-USERNAME"))
 | 
						||
 | 
						||
(define-record-type* <postgresql-config-file>
 | 
						||
  postgresql-config-file make-postgresql-config-file
 | 
						||
  postgresql-config-file?
 | 
						||
  (log-destination postgresql-config-file-log-destination
 | 
						||
                   (default "syslog"))
 | 
						||
  (hba-file        postgresql-config-file-hba-file
 | 
						||
                   (default %default-postgres-hba))
 | 
						||
  (ident-file      postgresql-config-file-ident-file
 | 
						||
                   (default %default-postgres-ident))
 | 
						||
  (extra-config    postgresql-config-file-extra-config
 | 
						||
                   (default '())))
 | 
						||
 | 
						||
(define-gexp-compiler (postgresql-config-file-compiler
 | 
						||
                       (file <postgresql-config-file>) system target)
 | 
						||
  (match file
 | 
						||
    (($ <postgresql-config-file> log-destination hba-file
 | 
						||
                                 ident-file extra-config)
 | 
						||
     (define (single-quote string)
 | 
						||
       (if string
 | 
						||
           (list "'" string "'")
 | 
						||
           '()))
 | 
						||
 | 
						||
     (define contents
 | 
						||
       (append-map
 | 
						||
        (match-lambda
 | 
						||
          ((key) '())
 | 
						||
          ((key . #f) '())
 | 
						||
          ((key values ...) `(,key " = " ,@values "\n")))
 | 
						||
 | 
						||
        `(("log_destination" ,@(single-quote log-destination))
 | 
						||
          ("hba_file" ,@(single-quote hba-file))
 | 
						||
          ("ident_file" ,@(single-quote ident-file))
 | 
						||
          ,@extra-config)))
 | 
						||
 | 
						||
     (gexp->derivation
 | 
						||
      "postgresql.conf"
 | 
						||
      #~(call-with-output-file (ungexp output "out")
 | 
						||
          (lambda (port)
 | 
						||
            (display
 | 
						||
             (string-append #$@contents)
 | 
						||
             port)))
 | 
						||
      #:local-build? #t))))
 | 
						||
 | 
						||
(define-record-type* <postgresql-configuration>
 | 
						||
  postgresql-configuration make-postgresql-configuration
 | 
						||
  postgresql-configuration?
 | 
						||
  (postgresql         postgresql-configuration-postgresql ;<package>
 | 
						||
                      (default postgresql))
 | 
						||
  (port               postgresql-configuration-port
 | 
						||
                      (default 5432))
 | 
						||
  (locale             postgresql-configuration-locale
 | 
						||
                      (default "en_US.utf8"))
 | 
						||
  (config-file        postgresql-configuration-file
 | 
						||
                      (default (postgresql-config-file)))
 | 
						||
  (data-directory     postgresql-configuration-data-directory
 | 
						||
                      (default "/var/lib/postgresql/data"))
 | 
						||
  (extension-packages postgresql-configuration-extension-packages
 | 
						||
                      (default '())))
 | 
						||
 | 
						||
(define %postgresql-accounts
 | 
						||
  (list (user-group (name "postgres") (system? #t))
 | 
						||
        (user-account
 | 
						||
         (name "postgres")
 | 
						||
         (group "postgres")
 | 
						||
         (system? #t)
 | 
						||
         (comment "PostgreSQL server user")
 | 
						||
         (home-directory "/var/empty")
 | 
						||
         (shell (file-append shadow "/sbin/nologin")))))
 | 
						||
 | 
						||
(define (final-postgresql postgresql extension-packages)
 | 
						||
  (if (null? extension-packages)
 | 
						||
    postgresql
 | 
						||
    (package
 | 
						||
      (inherit postgresql)
 | 
						||
      (source #f)
 | 
						||
      (build-system trivial-build-system)
 | 
						||
      (arguments
 | 
						||
       `(#:modules ((guix build utils) (guix build union))
 | 
						||
         #:builder
 | 
						||
         (begin
 | 
						||
           (use-modules (guix build utils) (guix build union) (srfi srfi-26))
 | 
						||
           (union-build (assoc-ref %outputs "out") (map (lambda (input) (cdr input)) %build-inputs))
 | 
						||
           #t)))
 | 
						||
      (inputs
 | 
						||
       `(("postgresql" ,postgresql)
 | 
						||
         ,@(map (lambda (extension) (list "extension" extension))
 | 
						||
                extension-packages))))))
 | 
						||
 | 
						||
(define postgresql-activation
 | 
						||
  (match-lambda
 | 
						||
    (($ <postgresql-configuration> postgresql port locale config-file data-directory
 | 
						||
        extension-packages)
 | 
						||
     #~(begin
 | 
						||
         (use-modules (guix build utils)
 | 
						||
                      (ice-9 match))
 | 
						||
 | 
						||
         (let ((user (getpwnam "postgres"))
 | 
						||
               (initdb (string-append #$(final-postgresql postgresql extension-packages)
 | 
						||
                                      "/bin/initdb"))
 | 
						||
               (initdb-args
 | 
						||
                (append
 | 
						||
                 (if #$locale
 | 
						||
                     (list (string-append "--locale=" #$locale))
 | 
						||
                     '()))))
 | 
						||
           ;; Create db state directory.
 | 
						||
           (mkdir-p #$data-directory)
 | 
						||
           (chown #$data-directory (passwd:uid user) (passwd:gid user))
 | 
						||
 | 
						||
           ;; Drop privileges and init state directory in a new
 | 
						||
           ;; process.  Wait for it to finish before proceeding.
 | 
						||
           (match (primitive-fork)
 | 
						||
             (0
 | 
						||
              ;; Exit with a non-zero status code if an exception is thrown.
 | 
						||
              (dynamic-wind
 | 
						||
                (const #t)
 | 
						||
                (lambda ()
 | 
						||
                  (setgid (passwd:gid user))
 | 
						||
                  (setuid (passwd:uid user))
 | 
						||
                  (primitive-exit
 | 
						||
                   (apply system*
 | 
						||
                          initdb
 | 
						||
                          "-D"
 | 
						||
                          #$data-directory
 | 
						||
                          initdb-args)))
 | 
						||
                (lambda ()
 | 
						||
                  (primitive-exit 1))))
 | 
						||
             (pid (waitpid pid))))))))
 | 
						||
 | 
						||
(define postgresql-shepherd-service
 | 
						||
  (match-lambda
 | 
						||
    (($ <postgresql-configuration> postgresql port locale config-file data-directory
 | 
						||
        extension-packages)
 | 
						||
     (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 #$(file-append (final-postgresql postgresql extension-packages)
 | 
						||
                                                  "/bin/pg_ctl"))
 | 
						||
                           (options (format #f "--config-file=~a -p ~d"
 | 
						||
                                            #$config-file #$port)))
 | 
						||
                       (setgid (passwd:gid user))
 | 
						||
                       (setuid (passwd:uid user))
 | 
						||
                       (execl pg_ctl pg_ctl "-D" #$data-directory "-o" options
 | 
						||
                              mode)))))))
 | 
						||
            (pid-file (in-vicinity data-directory "postmaster.pid"))
 | 
						||
            (action (lambda args
 | 
						||
                      #~(lambda _
 | 
						||
                          (invoke #$pg_ctl-wrapper #$@args)
 | 
						||
                          (match '#$args
 | 
						||
                            (("start")
 | 
						||
                             (call-with-input-file #$pid-file read))
 | 
						||
                            (_ #t))))))
 | 
						||
       (list (shepherd-service
 | 
						||
              (provision '(postgres))
 | 
						||
              (documentation "Run the PostgreSQL daemon.")
 | 
						||
              (requirement '(user-processes loopback syslogd))
 | 
						||
              (modules `((ice-9 match)
 | 
						||
                         ,@%default-modules))
 | 
						||
              (start (action "start"))
 | 
						||
              (stop (action "stop"))))))))
 | 
						||
 | 
						||
(define postgresql-service-type
 | 
						||
  (service-type (name 'postgresql)
 | 
						||
                (extensions
 | 
						||
                 (list (service-extension shepherd-root-service-type
 | 
						||
                                          postgresql-shepherd-service)
 | 
						||
                       (service-extension activation-service-type
 | 
						||
                                          postgresql-activation)
 | 
						||
                       (service-extension account-service-type
 | 
						||
                                          (const %postgresql-accounts))))
 | 
						||
                (default-value (postgresql-configuration))))
 | 
						||
 | 
						||
(define* (postgresql-service #:key (postgresql postgresql)
 | 
						||
                             (port 5432)
 | 
						||
                             (locale "en_US.utf8")
 | 
						||
                             (config-file (postgresql-config-file))
 | 
						||
                             (data-directory "/var/lib/postgresql/data")
 | 
						||
                             (extension-packages '()))
 | 
						||
  "Return a service that runs @var{postgresql}, the PostgreSQL database server.
 | 
						||
 | 
						||
The PostgreSQL daemon loads its runtime configuration from @var{config-file}
 | 
						||
and stores the database cluster in @var{data-directory}."
 | 
						||
  (service postgresql-service-type
 | 
						||
           (postgresql-configuration
 | 
						||
            (postgresql postgresql)
 | 
						||
            (port port)
 | 
						||
            (locale locale)
 | 
						||
            (config-file config-file)
 | 
						||
            (data-directory data-directory)
 | 
						||
            (extension-packages extension-packages))))
 | 
						||
 | 
						||
 | 
						||
;;;
 | 
						||
;;; Memcached
 | 
						||
;;;
 | 
						||
 | 
						||
(define-record-type* <memcached-configuration>
 | 
						||
  memcached-configuration make-memcached-configuration
 | 
						||
  memcached-configuration?
 | 
						||
  (memcached          memcached-configuration-memcached ;<package>
 | 
						||
                      (default memcached))
 | 
						||
  (interfaces         memcached-configuration-interfaces
 | 
						||
                      (default '("0.0.0.0")))
 | 
						||
  (tcp-port           memcached-configuration-tcp-port
 | 
						||
                      (default 11211))
 | 
						||
  (udp-port           memcached-configuration-udp-port
 | 
						||
                      (default 11211))
 | 
						||
  (additional-options memcached-configuration-additional-options
 | 
						||
                      (default '())))
 | 
						||
 | 
						||
(define %memcached-accounts
 | 
						||
  (list (user-group (name "memcached") (system? #t))
 | 
						||
        (user-account
 | 
						||
         (name "memcached")
 | 
						||
         (group "memcached")
 | 
						||
         (system? #t)
 | 
						||
         (comment "Memcached server user")
 | 
						||
         (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)
 | 
						||
     (with-imported-modules (source-module-closure
 | 
						||
                             '((gnu build shepherd)))
 | 
						||
       (list (shepherd-service
 | 
						||
              (provision '(memcached))
 | 
						||
              (documentation "Run the Memcached daemon.")
 | 
						||
              (requirement '(user-processes loopback))
 | 
						||
              (modules '((gnu build shepherd)))
 | 
						||
              (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))))
 | 
						||
 | 
						||
 | 
						||
;;;
 | 
						||
;;; MongoDB
 | 
						||
;;;
 | 
						||
 | 
						||
(define %default-mongodb-configuration-file
 | 
						||
  (plain-file
 | 
						||
   "mongodb.yaml"
 | 
						||
   "# GNU Guix: MongoDB default configuration file
 | 
						||
processManagement:
 | 
						||
  pidFilePath: /var/run/mongodb/pid
 | 
						||
storage:
 | 
						||
  dbPath: /var/lib/mongodb
 | 
						||
"))
 | 
						||
 | 
						||
 | 
						||
(define-record-type* <mongodb-configuration>
 | 
						||
  mongodb-configuration make-mongodb-configuration
 | 
						||
  mongodb-configuration?
 | 
						||
  (mongodb             mongodb-configuration-mongodb
 | 
						||
                       (default mongodb))
 | 
						||
  (config-file         mongodb-configuration-config-file
 | 
						||
                       (default %default-mongodb-configuration-file))
 | 
						||
  (data-directory      mongodb-configuration-data-directory
 | 
						||
                       (default "/var/lib/mongodb")))
 | 
						||
 | 
						||
(define %mongodb-accounts
 | 
						||
  (list (user-group (name "mongodb") (system? #t))
 | 
						||
        (user-account
 | 
						||
         (name "mongodb")
 | 
						||
         (group "mongodb")
 | 
						||
         (system? #t)
 | 
						||
         (comment "Mongodb server user")
 | 
						||
         (home-directory "/var/lib/mongodb")
 | 
						||
         (shell (file-append shadow "/sbin/nologin")))))
 | 
						||
 | 
						||
(define mongodb-activation
 | 
						||
  (match-lambda
 | 
						||
    (($ <mongodb-configuration> mongodb config-file data-directory)
 | 
						||
     #~(begin
 | 
						||
         (use-modules (guix build utils))
 | 
						||
         (let ((user (getpwnam "mongodb")))
 | 
						||
           (for-each
 | 
						||
            (lambda (directory)
 | 
						||
              (mkdir-p directory)
 | 
						||
              (chown directory
 | 
						||
                     (passwd:uid user) (passwd:gid user)))
 | 
						||
            '("/var/run/mongodb" #$data-directory)))))))
 | 
						||
 | 
						||
(define mongodb-shepherd-service
 | 
						||
  (match-lambda
 | 
						||
    (($ <mongodb-configuration> mongodb config-file data-directory)
 | 
						||
     (shepherd-service
 | 
						||
      (provision '(mongodb))
 | 
						||
      (documentation "Run the Mongodb daemon.")
 | 
						||
      (requirement '(user-processes loopback))
 | 
						||
      (start #~(make-forkexec-constructor
 | 
						||
                `(,(string-append #$mongodb "/bin/mongod")
 | 
						||
                  "--config"
 | 
						||
                  ,#$config-file)
 | 
						||
                #:user "mongodb"
 | 
						||
                #:group "mongodb"
 | 
						||
                #:pid-file "/var/run/mongodb/pid"
 | 
						||
                #:log-file "/var/log/mongodb.log"))
 | 
						||
      (stop #~(make-kill-destructor))))))
 | 
						||
 | 
						||
(define mongodb-service-type
 | 
						||
  (service-type
 | 
						||
   (name 'mongodb)
 | 
						||
   (description "Run the MongoDB document database server.")
 | 
						||
   (extensions
 | 
						||
    (list (service-extension shepherd-root-service-type
 | 
						||
                             (compose list
 | 
						||
                                      mongodb-shepherd-service))
 | 
						||
          (service-extension activation-service-type
 | 
						||
                             mongodb-activation)
 | 
						||
          (service-extension account-service-type
 | 
						||
                             (const %mongodb-accounts))))
 | 
						||
   (default-value
 | 
						||
     (mongodb-configuration))))
 | 
						||
 | 
						||
 | 
						||
;;;
 | 
						||
;;; MySQL.
 | 
						||
;;;
 | 
						||
 | 
						||
(define-record-type* <mysql-configuration>
 | 
						||
  mysql-configuration make-mysql-configuration
 | 
						||
  mysql-configuration?
 | 
						||
  (mysql mysql-configuration-mysql (default mariadb))
 | 
						||
  (port mysql-configuration-port (default 3306))
 | 
						||
  (extra-content mysql-configuration-extra-content (default "")))
 | 
						||
 | 
						||
(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 port extra-content)
 | 
						||
     (mixed-text-file "my.cnf" "[mysqld]
 | 
						||
datadir=/var/lib/mysql
 | 
						||
socket=/run/mysqld/mysqld.sock
 | 
						||
port=" (number->string port) "
 | 
						||
" extra-content "
 | 
						||
"))))
 | 
						||
 | 
						||
(define (%mysql-activation config)
 | 
						||
  "Return an activation gexp for the MySQL or MariaDB database server."
 | 
						||
  (let ((mysql  (mysql-configuration-mysql config))
 | 
						||
        (my.cnf (mysql-configuration-file config)))
 | 
						||
    #~(begin
 | 
						||
        (use-modules (ice-9 popen)
 | 
						||
                     (guix build utils))
 | 
						||
        (let* ((mysqld  (string-append #$mysql "/bin/mysqld"))
 | 
						||
               (user    (getpwnam "mysql"))
 | 
						||
               (uid     (passwd:uid user))
 | 
						||
               (gid     (passwd:gid user))
 | 
						||
               (datadir "/var/lib/mysql")
 | 
						||
               (rundir  "/run/mysqld"))
 | 
						||
          (mkdir-p datadir)
 | 
						||
          (chown datadir uid gid)
 | 
						||
          (mkdir-p rundir)
 | 
						||
          (chown rundir uid gid)
 | 
						||
          ;; Initialize the database when it doesn't exist.
 | 
						||
          (when (not (file-exists? (string-append datadir "/mysql")))
 | 
						||
            (if (string-prefix? "mysql-" (strip-store-file-name #$mysql))
 | 
						||
                ;; For MySQL.
 | 
						||
                (system* mysqld
 | 
						||
                         (string-append "--defaults-file=" #$my.cnf)
 | 
						||
                         "--initialize"
 | 
						||
                         "--user=mysql")
 | 
						||
                ;; For MariaDB.
 | 
						||
                ;; XXX: The 'mysql_install_db' script doesn't work directly
 | 
						||
                ;;      due to missing 'mkdir' in PATH.
 | 
						||
                (let ((p (open-pipe* OPEN_WRITE mysqld
 | 
						||
                                     (string-append
 | 
						||
                                      "--defaults-file=" #$my.cnf)
 | 
						||
                                     "--bootstrap"
 | 
						||
                                     "--user=mysql")))
 | 
						||
                  ;; Create the system database, as does by 'mysql_install_db'.
 | 
						||
                  (display "create database mysql;\n" p)
 | 
						||
                  (display "use mysql;\n" p)
 | 
						||
                  (for-each
 | 
						||
                   (lambda (sql)
 | 
						||
                     (call-with-input-file
 | 
						||
                         (string-append #$mysql:lib "/share/mysql/" sql)
 | 
						||
                       (lambda (in) (dump-port in p))))
 | 
						||
                   '("mysql_system_tables.sql"
 | 
						||
                     "mysql_performance_tables.sql"
 | 
						||
                     "mysql_system_tables_data.sql"
 | 
						||
                     "fill_help_tables.sql"))
 | 
						||
                  ;; Remove the anonymous user and disable root access from
 | 
						||
                  ;; remote machines, as does by 'mysql_secure_installation'.
 | 
						||
                  (display "
 | 
						||
DELETE FROM user WHERE User='';
 | 
						||
DELETE FROM user WHERE User='root' AND
 | 
						||
  Host NOT IN  ('localhost', '127.0.0.1', '::1');
 | 
						||
FLUSH PRIVILEGES;
 | 
						||
" p)
 | 
						||
                  (close-pipe p))))))))
 | 
						||
 | 
						||
(define (mysql-shepherd-service config)
 | 
						||
  (list (shepherd-service
 | 
						||
         (provision '(mysql))
 | 
						||
         (documentation "Run the MySQL server.")
 | 
						||
         (start (let ((mysql  (mysql-configuration-mysql config))
 | 
						||
                      (my.cnf (mysql-configuration-file config)))
 | 
						||
                  #~(make-forkexec-constructor
 | 
						||
                     (list (string-append #$mysql "/bin/mysqld")
 | 
						||
                           (string-append "--defaults-file=" #$my.cnf))
 | 
						||
                     #:user "mysql" #:group "mysql")))
 | 
						||
         (stop #~(make-kill-destructor)))))
 | 
						||
 | 
						||
(define mysql-service-type
 | 
						||
  (service-type
 | 
						||
   (name 'mysql)
 | 
						||
   (extensions
 | 
						||
    (list (service-extension account-service-type
 | 
						||
                             (const %mysql-accounts))
 | 
						||
          (service-extension activation-service-type
 | 
						||
                             %mysql-activation)
 | 
						||
          (service-extension shepherd-root-service-type
 | 
						||
                             mysql-shepherd-service)))
 | 
						||
   (default-value (mysql-configuration))))
 | 
						||
 | 
						||
(define* (mysql-service #:key (config (mysql-configuration)))
 | 
						||
  "Return a service that runs @command{mysqld}, the MySQL or MariaDB
 | 
						||
database server.
 | 
						||
 | 
						||
The optional @var{config} argument specifies the configuration for
 | 
						||
@command{mysqld}, which should be a @code{<mysql-configuration>} object."
 | 
						||
  (service mysql-service-type config))
 | 
						||
 | 
						||
 | 
						||
;;;
 | 
						||
;;; Redis
 | 
						||
;;;
 | 
						||
 | 
						||
(define-record-type* <redis-configuration>
 | 
						||
  redis-configuration make-redis-configuration
 | 
						||
  redis-configuration?
 | 
						||
  (redis             redis-configuration-redis ;<package>
 | 
						||
                     (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))
 | 
						||
              (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))))
 |