128 lines
4.7 KiB
Scheme
128 lines
4.7 KiB
Scheme
;;;; cuirass -- continuous integration tool
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;;; Copyright © 2016 Mathieu Lirzin <mthl@gnu.org>
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;;; Copyright © 2017 Mathieu Othacehe <m.othacehe@gmail.com>
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;;; Copyright © 2018 Ludovic Courtès <ludo@gnu.org>
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;;; Copyright © 2018 Clément Lassieur <clement@lassieur.org>
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;;;
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;;; This file is part of Cuirass.
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;;;
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;;; Cuirass is free software: you can redistribute it and/or modify
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;;; it 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
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;;; (at your option) any later version.
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;;;
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;;; Cuirass is distributed in the hope that it will be useful,
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;;; but 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 Cuirass. If not, see <http://www.gnu.org/licenses/>.
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(define-module (cuirass scripts web)
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#:use-module (cuirass)
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#:use-module (cuirass base)
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#:use-module (cuirass database)
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#:use-module (cuirass ui)
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#:use-module (cuirass logging)
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#:use-module (cuirass metrics)
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#:use-module (cuirass notification)
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#:use-module (cuirass specification)
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#:use-module (cuirass utils)
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#:use-module (cuirass watchdog)
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#:use-module (cuirass zabbix)
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#:use-module (guix ui)
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#:use-module ((guix build utils) #:select (mkdir-p))
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#:use-module (fibers)
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#:use-module (fibers channels)
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#:use-module (srfi srfi-19)
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#:use-module (ice-9 threads)
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#:use-module (ice-9 getopt-long)
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#:export (cuirass-web))
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(define (show-help)
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(format #t "Usage: ~a web [OPTIONS]~%" (%program-name))
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(display "Run the Cuirass web server.
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-P --parameters=PARAMFILE
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Read parameters for PARAMFILE.
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-D --database=DB Use DB to store build results.
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-p --port=NUM Port of the HTTP server.
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--listen=HOST Listen on the network interface for HOST
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-V, --version Display version
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-h, --help Display this help message")
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(newline)
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(show-package-information))
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(define %options
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'((parameters (single-char #\P) (value #t))
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(database (single-char #\D) (value #t))
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(port (single-char #\p) (value #t))
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(listen (value #t))
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(version (single-char #\V) (value #f))
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(help (single-char #\h) (value #f))))
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;;;
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;;; Entry point.
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;;;
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(define (cuirass-web args)
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(let ((opts (getopt-long args %options)))
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(parameterize
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((%create-database? #f)
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(%package-database (option-ref opts 'database (%package-database))))
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(cond
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((option-ref opts 'help #f)
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(show-help)
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(exit 0))
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((option-ref opts 'version #f)
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(show-version)
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(exit 0))
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(else
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(let ((port (string->number (option-ref opts 'port "8080")))
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(host (option-ref opts 'listen "localhost"))
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(paramfile (option-ref opts 'parameters #f))
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;; Since our work is mostly I/O-bound, default to a maximum of 4
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;; kernel threads. Going beyond that can increase overhead (GC
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;; may not scale well, work-stealing may become detrimental,
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;; etc.) for little in return.
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(threads (or (and=> (option-ref opts 'threads #f)
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string->number)
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(min (current-processor-count) 4))))
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(prepare-git)
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(log-message "running Fibers on ~a kernel threads" threads)
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(run-fibers
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(lambda ()
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(with-database
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(and paramfile (read-parameters paramfile))
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(let ((exit-channel (make-channel)))
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(start-watchdog)
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(spawn-fiber
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(essential-task
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'web exit-channel
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(lambda ()
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(run-cuirass-server #:host host
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#:port port)))
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#:parallel? #t)
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(spawn-fiber
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(essential-task
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'monitor exit-channel
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(lambda ()
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(while #t
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(log-monitoring-stats)
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(sleep 600)))))
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(primitive-exit (get-message exit-channel)))))
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;; Most of our code is I/O so preemption doesn't matter much (it
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;; could help while we're doing SQL requests, for instance, but it
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;; doesn't actually help since these are non-resumable
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;; continuations.) Thus, reduce the tick rate.
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#:hz 10
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#:parallelism threads
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#:drain? #t)))))))
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