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307 lines
13 KiB
Scheme
307 lines
13 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, 2017 Ludovic Courtès <ludo@gnu.org>
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;;; Copyright © 2016 ng0 <ng0@we.make.ritual.n0.is>
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;;; Copyright © 2016, 2017 Julien Lepiller <julien@lepiller.eu>
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;;; Copyright © 2017 Christopher Baines <mail@cbaines.net>
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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 web)
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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 web)
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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 (nginx-configuration
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nginx-configuration?
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nginx-server-configuration
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nginx-server-configuration?
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nginx-upstream-configuration
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nginx-upstream-configuration?
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nginx-location-configuration
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nginx-location-configuration?
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nginx-named-location-configuration
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nginx-named-location-configuration?
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nginx-service
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nginx-service-type))
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;;; Commentary:
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;;;
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;;; Web services.
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;;;
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;;; Code:
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(define-record-type* <nginx-server-configuration>
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nginx-server-configuration make-nginx-server-configuration
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nginx-server-configuration?
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(http-port nginx-server-configuration-http-port
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(default 80))
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(https-port nginx-server-configuration-https-port
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(default 443))
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(server-name nginx-server-configuration-server-name
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(default (list 'default)))
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(root nginx-server-configuration-root
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(default "/srv/http"))
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(locations nginx-server-configuration-locations
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(default '()))
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(index nginx-server-configuration-index
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(default (list "index.html")))
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(ssl-certificate nginx-server-configuration-ssl-certificate
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(default "/etc/nginx/cert.pem"))
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(ssl-certificate-key nginx-server-configuration-ssl-certificate-key
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(default "/etc/nginx/key.pem"))
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(server-tokens? nginx-server-configuration-server-tokens?
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(default #f)))
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(define-record-type* <nginx-upstream-configuration>
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nginx-upstream-configuration make-nginx-upstream-configuration
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nginx-upstream-configuration?
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(name nginx-upstream-configuration-name)
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(servers nginx-upstream-configuration-servers))
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(define-record-type* <nginx-location-configuration>
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nginx-location-configuration make-nginx-location-configuration
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nginx-location-configuration?
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(uri nginx-location-configuration-uri
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(default #f))
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(body nginx-location-configuration-body))
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(define-record-type* <nginx-named-location-configuration>
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nginx-named-location-configuration make-nginx-named-location-configuration
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nginx-named-location-configuration?
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(name nginx-named-location-configuration-name
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(default #f))
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(body nginx-named-location-configuration-body))
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(define-record-type* <nginx-configuration>
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nginx-configuration make-nginx-configuration
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nginx-configuration?
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(nginx nginx-configuration-nginx ;<package>
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(default nginx))
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(log-directory nginx-configuration-log-directory ;string
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(default "/var/log/nginx"))
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(run-directory nginx-configuration-run-directory ;string
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(default "/var/run/nginx"))
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(server-blocks nginx-configuration-server-blocks
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(default '())) ;list of <nginx-server-configuration>
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(upstream-blocks nginx-configuration-upstream-blocks
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(default '())) ;list of <nginx-upstream-configuration>
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(file nginx-configuration-file ;#f | string | file-like
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(default #f)))
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(define (config-domain-strings names)
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"Return a string denoting the nginx config representation of NAMES, a list
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of domain names."
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(string-join
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(map (match-lambda
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('default "_ ")
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((? string? str) (string-append str " ")))
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names)))
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(define (config-index-strings names)
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"Return a string denoting the nginx config representation of NAMES, a list
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of index files."
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(string-join
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(map (match-lambda
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((? string? str) (string-append str " ")))
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names)))
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(define nginx-location-config
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(match-lambda
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(($ <nginx-location-configuration> uri body)
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(string-append
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" location " uri " {\n"
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" " (string-join body "\n ") "\n"
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" }\n"))
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(($ <nginx-named-location-configuration> name body)
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(string-append
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" location @" name " {\n"
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" " (string-join body "\n ") "\n"
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" }\n"))))
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(define (default-nginx-server-config server)
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(string-append
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" server {\n"
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(if (nginx-server-configuration-http-port server)
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(string-append " listen "
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(number->string (nginx-server-configuration-http-port server))
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";\n")
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"")
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(if (nginx-server-configuration-https-port server)
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(string-append " listen "
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(number->string (nginx-server-configuration-https-port server))
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" ssl;\n")
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"")
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" server_name " (config-domain-strings
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(nginx-server-configuration-server-name server))
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";\n"
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(if (nginx-server-configuration-ssl-certificate server)
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(let ((certificate (nginx-server-configuration-ssl-certificate server)))
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;; lstat fails when the certificate file does not exist: it aborts
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;; and lets the user fix their configuration.
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(lstat certificate)
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(string-append " ssl_certificate " certificate ";\n"))
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"")
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(if (nginx-server-configuration-ssl-certificate-key server)
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(let ((key (nginx-server-configuration-ssl-certificate-key server)))
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(lstat key)
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(string-append " ssl_certificate_key " key ";\n"))
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"")
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" root " (nginx-server-configuration-root server) ";\n"
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" index " (config-index-strings (nginx-server-configuration-index server)) ";\n"
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" server_tokens " (if (nginx-server-configuration-server-tokens? server)
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"on" "off") ";\n"
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"\n"
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(string-join
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(map nginx-location-config (nginx-server-configuration-locations server))
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"\n")
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" }\n"))
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(define (nginx-upstream-config upstream)
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(string-append
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" upstream " (nginx-upstream-configuration-name upstream) " {\n"
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(string-concatenate
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(map (lambda (server)
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(simple-format #f " server ~A;\n" server))
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(nginx-upstream-configuration-servers upstream)))
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" }\n"))
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(define (default-nginx-config nginx log-directory run-directory server-list upstream-list)
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(mixed-text-file "nginx.conf"
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"user nginx nginx;\n"
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"pid " run-directory "/pid;\n"
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"error_log " log-directory "/error.log info;\n"
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"http {\n"
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" client_body_temp_path " run-directory "/client_body_temp;\n"
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" proxy_temp_path " run-directory "/proxy_temp;\n"
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" fastcgi_temp_path " run-directory "/fastcgi_temp;\n"
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" uwsgi_temp_path " run-directory "/uwsgi_temp;\n"
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" scgi_temp_path " run-directory "/scgi_temp;\n"
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" access_log " log-directory "/access.log;\n"
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" include " nginx "/share/nginx/conf/mime.types;\n"
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"\n"
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(string-join
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(filter (lambda (section) (not (null? section)))
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(map nginx-upstream-config upstream-list))
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"\n")
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"\n"
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(let ((http (map default-nginx-server-config server-list)))
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(do ((http http (cdr http))
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(block "" (string-append (car http) "\n" block )))
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((null? http) block)))
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"}\n"
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"events {}\n"))
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(define %nginx-accounts
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(list (user-group (name "nginx") (system? #t))
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(user-account
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(name "nginx")
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(group "nginx")
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(system? #t)
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(comment "nginx 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 nginx-activation
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(match-lambda
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(($ <nginx-configuration> nginx log-directory run-directory server-blocks
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upstream-blocks config-file)
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#~(begin
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(use-modules (guix build utils))
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(format #t "creating nginx log directory '~a'~%" #$log-directory)
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(mkdir-p #$log-directory)
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(format #t "creating nginx run directory '~a'~%" #$run-directory)
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(mkdir-p #$run-directory)
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(format #t "creating nginx temp directories '~a/{client_body,proxy,fastcgi,uwsgi,scgi}_temp'~%" #$run-directory)
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(mkdir-p (string-append #$run-directory "/client_body_temp"))
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(mkdir-p (string-append #$run-directory "/proxy_temp"))
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(mkdir-p (string-append #$run-directory "/fastcgi_temp"))
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(mkdir-p (string-append #$run-directory "/uwsgi_temp"))
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(mkdir-p (string-append #$run-directory "/scgi_temp"))
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;; Start-up logs. Once configuration is loaded, nginx switches to
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;; log-directory.
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(mkdir-p (string-append #$run-directory "/logs"))
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;; Check configuration file syntax.
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(system* (string-append #$nginx "/sbin/nginx")
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"-c" #$(or config-file
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(default-nginx-config nginx log-directory
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run-directory server-blocks upstream-blocks))
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"-t")))))
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(define nginx-shepherd-service
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(match-lambda
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(($ <nginx-configuration> nginx log-directory run-directory server-blocks
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upstream-blocks config-file)
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(let* ((nginx-binary (file-append nginx "/sbin/nginx"))
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(nginx-action
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(lambda args
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#~(lambda _
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(zero?
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(system* #$nginx-binary "-c"
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#$(or config-file
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(default-nginx-config nginx log-directory
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run-directory server-blocks upstream-blocks))
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#$@args))))))
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;; TODO: Add 'reload' action.
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(list (shepherd-service
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(provision '(nginx))
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(documentation "Run the nginx daemon.")
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(requirement '(user-processes loopback))
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(start (nginx-action "-p" run-directory))
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(stop (nginx-action "-s" "stop"))))))))
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(define nginx-service-type
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(service-type (name 'nginx)
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(extensions
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(list (service-extension shepherd-root-service-type
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nginx-shepherd-service)
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(service-extension activation-service-type
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nginx-activation)
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(service-extension account-service-type
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(const %nginx-accounts))))
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(compose concatenate)
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(extend (lambda (config servers)
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(nginx-configuration
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(inherit config)
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(server-blocks
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(append (nginx-configuration-server-blocks config)
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servers)))))))
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(define* (nginx-service #:key (nginx nginx)
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(log-directory "/var/log/nginx")
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(run-directory "/var/run/nginx")
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(server-list '())
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(upstream-list '())
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(config-file #f))
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"Return a service that runs NGINX, the nginx web server.
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The nginx daemon loads its runtime configuration from CONFIG-FILE, stores log
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files in LOG-DIRECTORY, and stores temporary runtime files in RUN-DIRECTORY."
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(service nginx-service-type
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(nginx-configuration
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(nginx nginx)
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(log-directory log-directory)
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(run-directory run-directory)
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(server-blocks server-list)
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(upstream-blocks upstream-list)
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(file config-file))))
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