121 lines
4.0 KiB
Scheme
121 lines
4.0 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2014, 2015, 2016 Ludovic Courtès <ludo@gnu.org>
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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 (guix tests http)
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#:use-module (ice-9 threads)
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#:use-module (web server)
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#:use-module (web server http)
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#:use-module (web response)
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#:use-module (srfi srfi-39)
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#:export (with-http-server
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call-with-http-server
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%http-server-port
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%http-server-socket
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%local-url))
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;;; Commentary:
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;;;
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;;; Code to spawn a Web server for testing purposes.
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;;;
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;;; Code:
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(define %http-server-port
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;; TCP port to use for the stub HTTP server.
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(make-parameter 9999))
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(define (%local-url)
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;; URL to use for 'home-page' tests.
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(string-append "http://localhost:" (number->string (%http-server-port))
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"/foo/bar"))
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(define %http-server-socket
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;; Listening socket for the web server. It is useful to export it so that
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;; tests can check whether we succeeded opening the socket and tests skip if
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;; needed.
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(delay
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(catch 'system-error
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(lambda ()
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(let ((sock (socket PF_INET SOCK_STREAM 0)))
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(setsockopt sock SOL_SOCKET SO_REUSEADDR 1)
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(bind sock
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(make-socket-address AF_INET INADDR_LOOPBACK
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(%http-server-port)))
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sock))
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(lambda args
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(let ((err (system-error-errno args)))
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(format (current-error-port)
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"warning: cannot run Web server for tests: ~a~%"
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(strerror err))
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#f)))))
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(define (http-write server client response body)
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"Write RESPONSE."
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(let* ((response (write-response response client))
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(port (response-port response)))
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(cond
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((not body)) ;pass
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(else
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(write-response-body response body)))
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(close-port port)
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(quit #t) ;exit the server thread
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(values)))
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;; Mutex and condition variable to synchronize with the HTTP server.
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(define %http-server-lock (make-mutex))
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(define %http-server-ready (make-condition-variable))
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(define (http-open . args)
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"Start listening for HTTP requests and signal %HTTP-SERVER-READY."
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(with-mutex %http-server-lock
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(let ((result (apply (@@ (web server http) http-open) args)))
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(signal-condition-variable %http-server-ready)
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result)))
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(define-server-impl stub-http-server
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;; Stripped-down version of Guile's built-in HTTP server.
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http-open
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(@@ (web server http) http-read)
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http-write
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(@@ (web server http) http-close))
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(define (call-with-http-server code data thunk)
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"Call THUNK with an HTTP server running and returning CODE and DATA (a
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string) on HTTP requests."
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(define (server-body)
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(define (handle request body)
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(values (build-response #:code code
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#:reason-phrase "Such is life")
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data))
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(catch 'quit
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(lambda ()
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(run-server handle stub-http-server
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`(#:socket ,(force %http-server-socket))))
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(const #t)))
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(with-mutex %http-server-lock
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(let ((server (make-thread server-body)))
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(wait-condition-variable %http-server-ready %http-server-lock)
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;; Normally SERVER exits automatically once it has received a request.
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(thunk))))
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(define-syntax-rule (with-http-server code data body ...)
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(call-with-http-server code data (lambda () body ...)))
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;;; http.scm ends here
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