guix/gnu/services/web.scm
Oleg Pykhalov 4d14808af4
services: web: Add try-files for the nginx-service-type.
* gnu/services/web.scm (<nginx-server-configuration>): Add
  nginx-server-configuration-try-files.
(emit-nginx-server-config): Use it.
* doc/guix.texi (Web Services): Document it.
2017-09-28 20:37:40 +02:00

388 lines
16 KiB
Scheme

;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2015 David Thompson <davet@gnu.org>
;;; Copyright © 2015, 2016, 2017 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2016 ng0 <ng0@we.make.ritual.n0.is>
;;; Copyright © 2016, 2017 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-configuration?
nginx-configuartion-nginx
nginx-configuration-log-directory
nginx-configuration-run-directory
nginx-configuration-server-blocks
nginx-configuration-upstream-blocks
nginx-configuration-file
<nginx-server-configuration>
nginx-server-configuration
nginx-server-configuration?
nginx-server-configuration-http-port
nginx-server-configuartion-https-port
nginx-server-configuration-server-name
nginx-server-configuration-root
nginx-server-configuration-locations
nginx-server-configuration-index
nginx-server-configuration-ssl-certificate
nginx-server-configuration-ssl-certificate-key
nginx-server-configuration-server-tokens?
<nginx-upstream-configuration>
nginx-upstream-configuration
nginx-upstream-configuration?
nginx-upstream-configuration-name
nginx-upstream-configuration-servers
<nginx-location-configuration>
nginx-location-configuration
nginx-location-configuration?
nginx-location-configuration-uri
nginx-location-configuration-body
<nginx-named-location-configuration>
nginx-named-location-configuration
nginx-named-location-configuration?
nginx-named-location-configuration-name
nginx-named-location-configuration-body
nginx-service
nginx-service-type
fcgiwrap-configuration
fcgiwrap-configuration?
fcgiwrap-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"))
(locations nginx-server-configuration-locations
(default '()))
(index nginx-server-configuration-index
(default (list "index.html")))
(try-files nginx-server-configuration-try-files
(default '()))
(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-location-configuration>
nginx-location-configuration make-nginx-location-configuration
nginx-location-configuration?
(uri nginx-location-configuration-uri
(default #f))
(body nginx-location-configuration-body))
(define-record-type* <nginx-named-location-configuration>
nginx-named-location-configuration make-nginx-named-location-configuration
nginx-named-location-configuration?
(name nginx-named-location-configuration-name
(default #f))
(body nginx-named-location-configuration-body))
(define-record-type* <nginx-configuration>
nginx-configuration make-nginx-configuration
nginx-configuration?
(nginx nginx-configuration-nginx ;<package>
(default nginx))
(log-directory nginx-configuration-log-directory ;string
(default "/var/log/nginx"))
(run-directory nginx-configuration-run-directory ;string
(default "/var/run/nginx"))
(server-blocks nginx-configuration-server-blocks
(default '())) ;list of <nginx-server-configuration>
(upstream-blocks nginx-configuration-upstream-blocks
(default '())) ;list of <nginx-upstream-configuration>
(file nginx-configuration-file ;#f | string | file-like
(default #f)))
(define (config-domain-strings names)
"Return a string denoting the nginx config representation of NAMES, a list
of domain names."
(map (match-lambda
('default "_ ")
((? string? str) (list str " ")))
names))
(define (config-index-strings names)
"Return a string denoting the nginx config representation of NAMES, a list
of index files."
(map (match-lambda
((? string? str) (list str " ")))
names))
(define emit-nginx-location-config
(match-lambda
(($ <nginx-location-configuration> uri body)
(list
" location " uri " {\n"
(map (lambda (x) (list " " x "\n")) body)
" }\n"))
(($ <nginx-named-location-configuration> name body)
(list
" location @" name " {\n"
(map (lambda (x) (list " " x "\n")) body)
" }\n"))))
(define (emit-nginx-server-config server)
(let ((http-port (nginx-server-configuration-http-port server))
(https-port (nginx-server-configuration-https-port server))
(server-name (nginx-server-configuration-server-name server))
(ssl-certificate (nginx-server-configuration-ssl-certificate server))
(ssl-certificate-key
(nginx-server-configuration-ssl-certificate-key server))
(root (nginx-server-configuration-root server))
(index (nginx-server-configuration-index server))
(try-files (nginx-server-configuration-try-files server))
(server-tokens? (nginx-server-configuration-server-tokens? server))
(locations (nginx-server-configuration-locations server)))
(define-syntax-parameter <> (syntax-rules ()))
(define-syntax-rule (and/l x tail ...)
(let ((x* x))
(if x*
(syntax-parameterize ((<> (identifier-syntax x*)))
(list tail ...))
'())))
(for-each
(match-lambda
((record-key . file)
(if (and file (not (file-exists? file)))
(error
(simple-format
#f
"~A in the nginx configuration for the server with name \"~A\" does not exist" record-key server-name)))))
`(("ssl-certificate" . ,ssl-certificate)
("ssl-certificate-key" . ,ssl-certificate-key)))
(list
" server {\n"
(and/l http-port " listen " (number->string <>) ";\n")
(and/l https-port " listen " (number->string <>) " ssl;\n")
" server_name " (config-domain-strings server-name) ";\n"
(and/l ssl-certificate " ssl_certificate " <> ";\n")
(and/l ssl-certificate-key " ssl_certificate_key " <> ";\n")
" root " root ";\n"
" index " (config-index-strings index) ";\n"
(if (not (nil? try-files))
(and/l (config-index-strings try-files) " try_files " <> ";\n")
"")
" server_tokens " (if server-tokens? "on" "off") ";\n"
"\n"
(map emit-nginx-location-config locations)
"\n"
" }\n")))
(define (emit-nginx-upstream-config upstream)
(list
" upstream " (nginx-upstream-configuration-name upstream) " {\n"
(map (lambda (server)
(simple-format #f " server ~A;\n" server))
(nginx-upstream-configuration-servers upstream))
" }\n"))
(define (flatten . lst)
"Return a list that recursively concatenates all sub-lists of LST."
(define (flatten1 head out)
(if (list? head)
(fold-right flatten1 out head)
(cons head out)))
(fold-right flatten1 '() lst))
(define (default-nginx-config nginx log-directory run-directory server-list upstream-list)
(apply mixed-text-file "nginx.conf"
(flatten
"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"
" include " nginx "/share/nginx/conf/mime.types;\n"
"\n"
(map emit-nginx-upstream-config upstream-list)
(map emit-nginx-server-config server-list)
"}\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 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"))
;; Start-up logs. Once configuration is loaded, nginx switches to
;; log-directory.
(mkdir-p (string-append #$run-directory "/logs"))
;; Check configuration file syntax.
(system* (string-append #$nginx "/sbin/nginx")
"-c" #$(or file
(default-nginx-config nginx log-directory
run-directory server-blocks upstream-blocks))
"-t")))))
(define nginx-shepherd-service
(match-lambda
(($ <nginx-configuration> nginx log-directory run-directory server-blocks
upstream-blocks file)
(let* ((nginx-binary (file-append nginx "/sbin/nginx"))
(nginx-action
(lambda args
#~(lambda _
(zero?
(system* #$nginx-binary "-c"
#$(or file
(default-nginx-config nginx log-directory
run-directory server-blocks upstream-blocks))
#$@args))))))
;; TODO: Add 'reload' action.
(list (shepherd-service
(provision '(nginx))
(documentation "Run the nginx daemon.")
(requirement '(user-processes loopback))
(start (nginx-action "-p" run-directory))
(stop (nginx-action "-s" "stop"))))))))
(define nginx-service-type
(service-type (name 'nginx)
(extensions
(list (service-extension shepherd-root-service-type
nginx-shepherd-service)
(service-extension activation-service-type
nginx-activation)
(service-extension account-service-type
(const %nginx-accounts))))
(compose concatenate)
(extend (lambda (config servers)
(nginx-configuration
(inherit config)
(server-blocks
(append (nginx-configuration-server-blocks config)
servers)))))
(default-value
(nginx-configuration))))
(define-record-type* <fcgiwrap-configuration> fcgiwrap-configuration
make-fcgiwrap-configuration
fcgiwrap-configuration?
(package fcgiwrap-configuration-package ;<package>
(default fcgiwrap))
(socket fcgiwrap-configuration-socket
(default "tcp:127.0.0.1:9000"))
(user fcgiwrap-configuration-user
(default "fcgiwrap"))
(group fcgiwrap-configuration-group
(default "fcgiwrap")))
(define fcgiwrap-accounts
(match-lambda
(($ <fcgiwrap-configuration> package socket user group)
(filter identity
(list
(and (equal? group "fcgiwrap")
(user-group
(name "fcgiwrap")
(system? #t)))
(and (equal? user "fcgiwrap")
(user-account
(name "fcgiwrap")
(group group)
(system? #t)
(comment "Fcgiwrap Daemon")
(home-directory "/var/empty")
(shell (file-append shadow "/sbin/nologin")))))))))
(define fcgiwrap-shepherd-service
(match-lambda
(($ <fcgiwrap-configuration> package socket user group)
(list (shepherd-service
(provision '(fcgiwrap))
(documentation "Run the fcgiwrap daemon.")
(requirement '(networking))
(start #~(make-forkexec-constructor
'(#$(file-append package "/sbin/fcgiwrap")
"-s" #$socket)
#:user #$user #:group #$group))
(stop #~(make-kill-destructor)))))))
(define fcgiwrap-service-type
(service-type (name 'fcgiwrap)
(extensions
(list (service-extension shepherd-root-service-type
fcgiwrap-shepherd-service)
(service-extension account-service-type
fcgiwrap-accounts)))
(default-value (fcgiwrap-configuration))))