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;;; Guix Build Coordinator
;;;
;;; Copyright © 2020 Christopher Baines <mail@cbaines.net>
;;;
;;; This file is part of the guix-build-coordinator.
;;;
;;; The Guix Build Coordinator 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.
;;;
;;; The Guix Build Coordinator 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 the guix-data-service. If not, see
;;; <http://www.gnu.org/licenses/>.
(define-module (guix-build-coordinator client-communication)
#:use-module (srfi srfi-11)
#:use-module (ice-9 format)
#:use-module (ice-9 match)
#:use-module (ice-9 exceptions)
#:use-module (rnrs bytevectors)
#:use-module (json)
#:use-module (web uri)
#:use-module (web client)
#:use-module (web request)
#:use-module (web response)
#:use-module (system repl error-handling)
#:use-module (guix derivations)
#:use-module (guix-build-coordinator utils)
#:use-module (guix-build-coordinator utils fibers)
#:use-module (guix-build-coordinator datastore)
#:use-module (guix-build-coordinator coordinator)
#:export (start-client-request-server
send-submit-build-request
request-build-details
request-output-details
request-agents-list
request-failed-builds-with-blocking-count-list
send-create-agent-request
send-create-agent-password-request))
(define (start-client-request-server secret-key-base
host
port
build-coordinator
substitutes-channel)
(call-with-error-handling
(lambda ()
(run-server/patched
(lambda (request body)
(display
(format #f "~4a ~a\n"
(request-method request)
(uri-path (request-uri request))))
(apply values
(controller request
(cons (request-method request)
(split-and-decode-uri-path
(uri-path (request-uri request))))
body
secret-key-base
build-coordinator
substitutes-channel)))
#:host host
#:port port))
#:on-error 'backtrace))
(define (controller request
method-and-path-components
raw-body
secret-key-base
build-coordinator
substitutes-channel)
(define datastore
(build-coordinator-datastore build-coordinator))
(define body
(if raw-body
(json-string->scm (utf8->string raw-body))
'()))
(define (controller-thunk)
(match method-and-path-components
(('GET "build" uuid)
(match (datastore-find-build datastore uuid)
(#f
(render-json '((error . "no build found"))
#:code 404))
(build-details
(let ((derivation-inputs
(map
(lambda (derivation-input-details)
(let ((builds (datastore-list-builds-for-output
datastore
(assq-ref derivation-input-details
'output))))
`(,@derivation-input-details
(builds . ,(list->vector builds)))))
(datastore-find-derivation-inputs
datastore
(assq-ref build-details 'derivation-name))))
(setup-failures
(map
(lambda (setup-failure)
`(,@setup-failure
,@(if (string=? (assq-ref setup-failure 'failure-reason)
"missing_inputs")
`((missing-inputs
. ,(list->vector
(map
(lambda (missing-input)
(let ((builds-for-missing-input
(datastore-list-builds-for-output
datastore
missing-input)))
`((missing-input . ,missing-input)
(builds . ,(list->vector
builds-for-missing-input)))))
(datastore-list-setup-failure-missing-inputs
datastore
(assq-ref setup-failure 'id))))))
'())))
(datastore-list-setup-failures-for-build
datastore
(assq-ref build-details 'uuid)))))
(render-json
`(,@build-details
(derivation-inputs . ,(list->vector derivation-inputs))
(setup-failures . ,(list->vector setup-failures))))))))
(('GET "builds" "blocking")
(render-json
`((builds
. ,(list->vector
(datastore-list-failed-builds-with-blocking-count datastore))))))
(('GET "output" output-components ...)
(let* ((output (string-append
"/" (string-join output-components "/")))
(builds (datastore-list-builds-for-output datastore
output)))
(render-json
`((builds . ,(list->vector builds))))))
(('GET "agents")
(render-json
`((agents . ,(list->vector (datastore-list-agents datastore))))))
(('POST "agents")
(let ((uuid (new-agent
datastore
#:requested-uuid (assoc-ref body "requested-uuid")
#:description (assoc-ref body "description"))))
(render-json
`((agent-id . ,uuid)))))
(('POST "agent" agent-id "passwords")
(let ((password (new-agent-password
datastore
#:agent agent-id)))
(render-json
`((new-password . ,password)))))
(('POST "builds")
(let ((derivation-file (assoc-ref body "derivation")))
(let ((derivation-database-entry
(datastore-find-derivation datastore derivation-file)))
(unless derivation-database-entry
(unless (file-exists? derivation-file)
(call-with-worker-thread
substitutes-channel
(lambda ()
(substitute-derivation derivation-file
#:substitute-urls
(vector->list
(assoc-ref body "substitute-urls"))))))
(datastore-store-derivation
datastore
(read-derivation-from-file derivation-file))))
(let ((submit-build-result
(apply
submit-build
`(,build-coordinator
,derivation-file
,@(let ((priority (assoc-ref body "priority")))
(if priority
`(#:priority ,priority)
'()))
,@(if (assoc-ref body "ignore-if-build-for-derivation-exists")
'(#:ignore-if-build-for-derivation-exists? #t)
'())
,@(if (assoc-ref body "ignore-if-build-for-outputs-exists")
'(#:ignore-if-build-for-outputs-exists? #t)
'())
,@(if (assoc-ref
body "ensure-all-related-derivation-outputs-have-builds")
'(#:ensure-all-related-derivation-outputs-have-builds? #t)
'())
,@(if (assoc-ref body "tags")
`(#:tags
,(map
(lambda (tag)
(cons (assoc-ref tag "key")
(assoc-ref tag "value")))
(vector->list (assoc-ref body "tags"))))
'())))))
(render-json submit-build-result))))
(_
(render-json
"not-found"
#:code 404))))
(call-with-error-handling
controller-thunk
#:on-error 'backtrace
#:post-error (lambda args
(match method-and-path-components
((method path-components ...)
(simple-format
(current-error-port)
"error: when processing: /~A ~A\n"
method (string-join path-components "/"))))
(render-json
`((error . ,(simple-format #f "~A" args)))
#:code 500))))
(define* (render-json json #:key (extra-headers '())
(code 200))
(list (build-response
#:code code
#:headers (append extra-headers
'((content-type . (application/json))
(vary . (accept)))))
(lambda (port)
(scm->json json port))))
(define* (send-request coordinator-uri
method
path
#:optional
request-body)
(let-values (((response body)
(http-request (string->uri
(string-append coordinator-uri path))
#:method method
#:body (and=> request-body scm->json-string)
#:decode-body? #f)))
(if (>= (response-code response) 400)
(begin
(simple-format
(current-error-port)
"error: coordinator-http-request: ~A ~A: ~A\n"
method path (response-code response))
(let ((body
(catch #t
(lambda ()
(if (equal? '(application/json (charset . "utf-8"))
(response-content-type response))
(json-string->scm (utf8->string body))
(utf8->string body)))
(lambda (key . args)
(simple-format
(current-error-port)
"error decoding body ~A ~A\n"
key args)
#f))))
(raise-exception
(make-exception-with-message
body))))
(values
(json-string->scm (utf8->string body))
response))))
(define (send-submit-build-request
coordinator-uri
derivation-file-name
substitute-urls
requested-uuid
priority
ignore-if-build-for-derivation-exists?
ignore-if-build-for-outputs-exists?
ensure-all-related-derivation-outputs-have-builds?
tags)
(send-request coordinator-uri
'POST
"/builds"
`((derivation . ,derivation-file-name)
(priority . ,priority)
,@(if substitute-urls
`((substitute-urls . ,(list->vector substitute-urls)))
'())
,@(if ignore-if-build-for-derivation-exists?
'((ignore-if-build-for-derivation-exists . #t))
'())
,@(if ignore-if-build-for-outputs-exists?
'((ignore-if-build-for-outputs-exists . #t))
'())
,@(if ensure-all-related-derivation-outputs-have-builds?
'((ensure-all-related-derivation-outputs-have-builds . #t))
'())
,@(if (null? tags)
'()
`((tags . ,(list->vector
(map (match-lambda
((key . value)
`((key . ,key)
(value . ,value))))
tags))))))))
(define (request-build-details coordinator-uri
uuid)
(send-request coordinator-uri
'GET
(string-append "/build/" uuid)))
(define (request-output-details coordinator-uri
output)
(send-request coordinator-uri
'GET
(string-append "/output" output)))
(define (request-agents-list coordinator-uri)
(send-request coordinator-uri
'GET
(string-append "/agents")))
(define (request-failed-builds-with-blocking-count-list coordinator-uri)
(send-request coordinator-uri
'GET
(string-append "/builds/blocking")))
(define* (send-create-agent-request coordinator-uri
#:key
requested-uuid
description)
(send-request coordinator-uri
'POST
"/agents"
`(,@(if requested-uuid
`((requested-uuid . ,requested-uuid))
'())
,@(if description
`((description . ,description))
'()))))
(define (send-create-agent-password-request coordinator-uri
agent-id)
(send-request coordinator-uri
'POST
(string-append "/agent/" agent-id "/passwords")))
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