blob: a56d6f213d63dfb10fb3aef1f84ee391c5546688 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2014, 2015, 2016, 2017 Ludovic Courtès <ludo@gnu.org>
;;;
;;; 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 (guix tests http)
#:use-module (ice-9 threads)
#:use-module (web server)
#:use-module (web server http)
#:use-module (web response)
#:use-module (srfi srfi-39)
#:export (with-http-server
call-with-http-server
%http-server-port
http-server-can-listen?
%local-url))
;;; Commentary:
;;;
;;; Code to spawn a Web server for testing purposes.
;;;
;;; Code:
(define %http-server-port
;; TCP port to use for the stub HTTP server.
(make-parameter 9999))
(define (open-http-server-socket)
"Return a listening socket for the web server. It is useful to export it so
that tests can check whether we succeeded opening the socket and tests skip if
needed."
(catch 'system-error
(lambda ()
(let ((sock (socket PF_INET SOCK_STREAM 0)))
(setsockopt sock SOL_SOCKET SO_REUSEADDR 1)
(bind sock
(make-socket-address AF_INET INADDR_LOOPBACK
(%http-server-port)))
sock))
(lambda args
(let ((err (system-error-errno args)))
(format (current-error-port)
"warning: cannot run Web server for tests: ~a~%"
(strerror err))
#f))))
(define (http-server-can-listen?)
"Return #t if we managed to open a listening socket."
(and=> (open-http-server-socket)
(lambda (socket)
(close-port socket)
#t)))
(define (%local-url)
;; URL to use for 'home-page' tests.
(string-append "http://localhost:" (number->string (%http-server-port))
"/foo/bar"))
(define* (call-with-http-server code data thunk
#:key (headers '()))
"Call THUNK with an HTTP server running and returning CODE and DATA (a
string) on HTTP requests."
(define (http-write server client response body)
"Write RESPONSE."
(let* ((response (write-response response client))
(port (response-port response)))
(cond
((not body)) ;pass
(else
(write-response-body response body)))
(close-port port)
(quit #t) ;exit the server thread
(values)))
;; Mutex and condition variable to synchronize with the HTTP server.
(define %http-server-lock (make-mutex))
(define %http-server-ready (make-condition-variable))
(define (http-open . args)
"Start listening for HTTP requests and signal %HTTP-SERVER-READY."
(with-mutex %http-server-lock
(let ((result (apply (@@ (web server http) http-open) args)))
(signal-condition-variable %http-server-ready)
result)))
(define-server-impl stub-http-server
;; Stripped-down version of Guile's built-in HTTP server.
http-open
(@@ (web server http) http-read)
http-write
(@@ (web server http) http-close))
(define (server-body)
(define (handle request body)
(values (build-response #:code code
#:reason-phrase "Such is life"
#:headers headers)
data))
(let ((socket (open-http-server-socket)))
(catch 'quit
(lambda ()
(run-server handle stub-http-server
`(#:socket ,socket)))
(lambda _
(close-port socket)))))
(with-mutex %http-server-lock
(let ((server (make-thread server-body)))
(wait-condition-variable %http-server-ready %http-server-lock)
;; Normally SERVER exits automatically once it has received a request.
(thunk))))
(define-syntax with-http-server
(syntax-rules ()
((_ (code headers) data body ...)
(call-with-http-server code data (lambda () body ...)
#:headers headers))
((_ code data body ...)
(call-with-http-server code data (lambda () body ...)))))
;;; http.scm ends here
|