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;;; Guix Data Service -- Information about Guix over time
;;; Copyright © 2017 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2019 Christopher Baines <mail@cbaines.net>
;;;
;;; This program is free software: you can redistribute it and/or
;;; modify it under the terms of the GNU Affero General Public License
;;; as published by the Free Software Foundation, either version 3 of
;;; the License, or (at your option) any later version.
;;;
;;; This program 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
;;; Affero General Public License for more details.
;;;
;;; You should have received a copy of the GNU Affero General Public
;;; License along with this program. If not, see
;;; <http://www.gnu.org/licenses/>.
(define-module (guix-data-service web server)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-11)
#:use-module (ice-9 match)
#:use-module (web http)
#:use-module (web request)
#:use-module (web uri)
#:use-module (system repl error-handling)
#:use-module (fibers web server)
#:use-module (guix-data-service web controller)
#:use-module (guix-data-service web util)
#:export (start-guix-data-service-web-server))
(define (handler request body controller secret-key-base
postgresql-statement-timeout)
(display
(format #f "~a ~a\n"
(request-method request)
(uri-path (request-uri request))))
(apply values
(let-values (((request-components mime-types)
(request->path-components-and-mime-type request)))
(controller request
(cons (request-method request)
request-components)
mime-types
body
secret-key-base
#:postgresql-statement-timeout
postgresql-statement-timeout))))
(define* (start-guix-data-service-web-server port host secret-key-base
#:key postgresql-statement-timeout)
(call-with-error-handling
(lambda ()
(run-server (lambda (request body)
(handler request body controller
secret-key-base
postgresql-statement-timeout))
#:host host
#:port port))
#:on-error 'backtrace
#:post-error (lambda (key . args)
(when (eq? key 'system-error)
(match args
(("bind" "~A" ("Address already in use") _)
(simple-format
(current-error-port)
"\n
error: guix-data-service could not start, as it could not bind to port ~A
Check if it's already running, or whether another process is using that
port. Also, the port used can be changed by passing the --port option.\n"
port)))))))
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