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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2015 David Thompson <davet@gnu.org>
;;; Copyright © 2015, 2016 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2016 ng0 <ng0@we.make.ritual.n0.is>
;;; Copyright © 2016 Julien Lepiller <julien@lepiller.eu>
;;; Copyright © 2017 Christopher Baines <mail@cbaines.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 web)
#:use-module (gnu services)
#:use-module (gnu services shepherd)
#:use-module (gnu system shadow)
#:use-module (gnu packages admin)
#:use-module (gnu packages web)
#:use-module (guix records)
#:use-module (guix gexp)
#:use-module (srfi srfi-1)
#:use-module (ice-9 match)
#:export (nginx-configuration
nginx-configuration?
nginx-server-configuration
nginx-server-configuration?
nginx-upstream-configuration
nginx-upstream-configuration?
nginx-service
nginx-service-type))
;;; Commentary:
;;;
;;; Web services.
;;;
;;; Code:
(define-record-type* <nginx-server-configuration>
nginx-server-configuration make-nginx-server-configuration
nginx-server-configuration?
(http-port nginx-server-configuration-http-port
(default 80))
(https-port nginx-server-configuration-https-port
(default 443))
(server-name nginx-server-configuration-server-name
(default (list 'default)))
(root nginx-server-configuration-root
(default "/srv/http"))
(index nginx-server-configuration-index
(default (list "index.html")))
(ssl-certificate nginx-server-configuration-ssl-certificate
(default "/etc/nginx/cert.pem"))
(ssl-certificate-key nginx-server-configuration-ssl-certificate-key
(default "/etc/nginx/key.pem"))
(server-tokens? nginx-server-configuration-server-tokens?
(default #f)))
(define-record-type* <nginx-upstream-configuration>
nginx-upstream-configuration make-nginx-upstream-configuration
nginx-upstream-configuration?
(name nginx-upstream-configuration-name)
(servers nginx-upstream-configuration-servers))
(define-record-type* <nginx-configuration>
nginx-configuration make-nginx-configuration
nginx-configuration?
(nginx nginx-configuration-nginx) ;<package>
(log-directory nginx-configuration-log-directory) ;string
(run-directory nginx-configuration-run-directory) ;string
(server-blocks nginx-configuration-server-blocks) ;list
(upstream-blocks nginx-configuration-upstream-blocks) ;list
(file nginx-configuration-file)) ;string | file-like
(define (config-domain-strings names)
"Return a string denoting the nginx config representation of NAMES, a list
of domain names."
(string-join
(map (match-lambda
('default "_ ")
((? string? str) (string-append str " ")))
names)))
(define (config-index-strings names)
"Return a string denoting the nginx config representation of NAMES, a list
of index files."
(string-join
(map (match-lambda
((? string? str) (string-append str " ")))
names)))
(define (default-nginx-server-config server)
(string-append
" server {\n"
(if (nginx-server-configuration-http-port server)
(string-append " listen "
(number->string (nginx-server-configuration-http-port server))
";\n")
"")
(if (nginx-server-configuration-https-port server)
(string-append " listen "
(number->string (nginx-server-configuration-https-port server))
" ssl;\n")
"")
" server_name " (config-domain-strings
(nginx-server-configuration-server-name server))
";\n"
(if (nginx-server-configuration-ssl-certificate server)
(string-append " ssl_certificate "
(nginx-server-configuration-ssl-certificate server) ";\n")
"")
(if (nginx-server-configuration-ssl-certificate-key server)
(string-append " ssl_certificate_key "
(nginx-server-configuration-ssl-certificate-key server) ";\n")
"")
" root " (nginx-server-configuration-root server) ";\n"
" index " (config-index-strings (nginx-server-configuration-index server)) ";\n"
" server_tokens " (if (nginx-server-configuration-server-tokens? server)
"on" "off") ";\n"
" }\n"))
(define (nginx-upstream-config upstream)
(string-append
" upstream " (nginx-upstream-configuration-name upstream) " {\n"
(string-concatenate
(map (lambda (server)
(simple-format #f " server ~A;\n" server))
(nginx-upstream-configuration-servers upstream)))
" }\n"))
(define (default-nginx-config log-directory run-directory server-list upstream-list)
(mixed-text-file "nginx.conf"
"user nginx nginx;\n"
"pid " run-directory "/pid;\n"
"error_log " log-directory "/error.log info;\n"
"http {\n"
" client_body_temp_path " run-directory "/client_body_temp;\n"
" proxy_temp_path " run-directory "/proxy_temp;\n"
" fastcgi_temp_path " run-directory "/fastcgi_temp;\n"
" uwsgi_temp_path " run-directory "/uwsgi_temp;\n"
" scgi_temp_path " run-directory "/scgi_temp;\n"
" access_log " log-directory "/access.log;\n"
"\n"
(string-join
(filter (lambda (section) (not (null? section)))
(map nginx-upstream-config upstream-list))
"\n")
"\n"
(let ((http (map default-nginx-server-config server-list)))
(do ((http http (cdr http))
(block "" (string-append (car http) "\n" block )))
((null? http) block)))
"}\n"
"events {}\n"))
(define %nginx-accounts
(list (user-group (name "nginx") (system? #t))
(user-account
(name "nginx")
(group "nginx")
(system? #t)
(comment "nginx server user")
(home-directory "/var/empty")
(shell (file-append shadow "/sbin/nologin")))))
(define nginx-activation
(match-lambda
(($ <nginx-configuration> nginx log-directory run-directory server-blocks
upstream-blocks config-file)
#~(begin
(use-modules (guix build utils))
(format #t "creating nginx log directory '~a'~%" #$log-directory)
(mkdir-p #$log-directory)
(format #t "creating nginx run directory '~a'~%" #$run-directory)
(mkdir-p #$run-directory)
(format #t "creating nginx temp directories '~a/{client_body,proxy,fastcgi,uwsgi,scgi}_temp'~%" #$run-directory)
(mkdir-p (string-append #$run-directory "/client_body_temp"))
(mkdir-p (string-append #$run-directory "/proxy_temp"))
(mkdir-p (string-append #$run-directory "/fastcgi_temp"))
(mkdir-p (string-append #$run-directory "/uwsgi_temp"))
(mkdir-p (string-append #$run-directory "/scgi_temp"))
;; Check configuration file syntax.
(system* (string-append #$nginx "/sbin/nginx")
"-c" #$(or config-file
(default-nginx-config log-directory
run-directory server-blocks upstream-blocks))
"-t")))))
(define nginx-shepherd-service
(match-lambda
(($ <nginx-configuration> nginx log-directory run-directory server-blocks
upstream-blocks config-file)
(let* ((nginx-binary (file-append nginx "/sbin/nginx"))
(nginx-action
(lambda args
#~(lambda _
(zero?
(system* #$nginx-binary "-c"
#$(or config-file
(default-nginx-config log-directory
run-directory server-blocks upstream-blocks))
#$@args))))))
;; TODO: Add 'reload' action.
(list (shepherd-service
(provision '(nginx))
(documentation "Run the nginx daemon.")
(requirement '(user-processes loopback))
(start (nginx-action "-p" run-directory))
(stop (nginx-action "-s" "stop"))))))))
(define nginx-service-type
(service-type (name 'nginx)
(extensions
(list (service-extension shepherd-root-service-type
nginx-shepherd-service)
(service-extension activation-service-type
nginx-activation)
(service-extension account-service-type
(const %nginx-accounts))))
(compose concatenate)
(extend (lambda (config servers)
(nginx-configuration
(inherit config)
(server-blocks
(append (nginx-configuration-server-blocks config)
servers)))))))
(define* (nginx-service #:key (nginx nginx)
(log-directory "/var/log/nginx")
(run-directory "/var/run/nginx")
(server-list '())
(upstream-list '())
(config-file #f))
"Return a service that runs NGINX, the nginx web server.
The nginx daemon loads its runtime configuration from CONFIG-FILE, stores log
files in LOG-DIRECTORY, and stores temporary runtime files in RUN-DIRECTORY."
(service nginx-service-type
(nginx-configuration
(nginx nginx)
(log-directory log-directory)
(run-directory run-directory)
(server-blocks server-list)
(upstream-blocks upstream-list)
(file config-file))))
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