download: Use Disarchive as a last resort.
* guix/download.scm (%disarchive-mirrors): New variable. (%disarchive-mirror-file): New variable. (built-in-download): Add 'disarchive-mirrors' keyword argument and pass its value along to the 'builtin:download' derivation. (url-fetch): Pass '%disarchive-mirror-file' to 'built-in-download'. * guix/scripts/perform-download.scm (perform-download): Read Disarchive mirrors from the environment and pass them to 'url-fetch'. * guix/build/download.scm (disarchive-fetch/any): New procedure. (url-fetch): Add 'disarchive-mirrors' keyword argument, use it to make a list of URIs, and use the new procedure to fetch the file if all other methods fail.master
Timothy Sample
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@ -2,6 +2,7 @@
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;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Ludovic Courtès <ludo@gnu.org>
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;;; Copyright © 2015 Mark H Weaver <mhw@netris.org>
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;;; Copyright © 2017 Tobias Geerinckx-Rice <me@tobias.gr>
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;;; Copyright © 2021 Timothy Sample <samplet@ngyro.com>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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@ -34,6 +35,8 @@
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#:use-module (srfi srfi-19)
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#:use-module (srfi srfi-26)
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#:autoload (ice-9 ftw) (scandir)
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#:autoload (guix base16) (bytevector->base16-string)
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#:autoload (guix swh) (swh-download-directory)
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#:use-module (ice-9 match)
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#:use-module (ice-9 format)
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#:export (open-socket-for-uri
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@ -626,10 +629,53 @@ Return a list of URIs."
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(else
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(list uri))))
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(define* (disarchive-fetch/any uris file
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#:key (timeout 10) (verify-certificate? #t))
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"Fetch a Disarchive specification from any of URIS, assemble it,
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and write the output to FILE."
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(define (fetch-specification uris)
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(any (lambda (uri)
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(false-if-exception*
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(let-values (((port size) (http-fetch uri
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#:verify-certificate?
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verify-certificate?
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#:timeout timeout)))
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(let ((specification (read port)))
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(close-port port)
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specification))))
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uris))
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(define (resolve addresses output)
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(any (match-lambda
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(('swhid swhid)
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(match (string-split swhid #\:)
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(("swh" "1" "dir" id)
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(format #t "Downloading from Software Heritage...~%" file)
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(false-if-exception*
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(swh-download-directory id output)))
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(_ #f)))
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(_ #f))
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addresses))
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(format #t "Trying to use Disarchive to assemble ~a...~%" file)
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(match (and=> (resolve-module '(disarchive) #:ensure #f)
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(lambda (disarchive)
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(cons (module-ref disarchive '%disarchive-log-port)
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(module-ref disarchive 'disarchive-assemble))))
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(#f
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(format #t "could not load Disarchive~%"))
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((%disarchive-log-port . disarchive-assemble)
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(match (fetch-specification uris)
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(#f
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(format #t "could not find its Disarchive specification~%"))
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(spec (parameterize ((%disarchive-log-port (current-output-port)))
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(disarchive-assemble spec file #:resolver resolve)))))))
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(define* (url-fetch url file
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#:key
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(timeout 10) (verify-certificate? #t)
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(mirrors '()) (content-addressed-mirrors '())
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(disarchive-mirrors '())
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(hashes '())
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print-build-trace?)
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"Fetch FILE from URL; URL may be either a single string, or a list of
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@ -693,6 +739,18 @@ otherwise simply ignore them."
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hashes))
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content-addressed-mirrors))
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(define disarchive-uris
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(append-map (match-lambda
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((? string? mirror)
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(map (match-lambda
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((hash-algo . hash)
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(string->uri
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(string-append mirror
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(symbol->string hash-algo) "/"
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(bytevector->base16-string hash)))))
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hashes)))
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disarchive-mirrors))
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;; Make this unbuffered so 'progress-report/file' works as expected. 'line
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;; means '\n', not '\r', so it's not appropriate here.
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(setvbuf (current-output-port) 'none)
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@ -705,15 +763,20 @@ otherwise simply ignore them."
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(or (fetch uri file)
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(try tail)))
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(()
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(format (current-error-port) "failed to download ~s from ~s~%"
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file url)
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;; Remove FILE in case we made an incomplete download, for example due
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;; to ENOSPC.
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(catch 'system-error
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(lambda ()
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(delete-file file))
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(const #f))
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#f))))
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;; If we are looking for a software archive, one last thing we
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;; can try is to use Disarchive to assemble it.
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(or (disarchive-fetch/any disarchive-uris file
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#:verify-certificate? verify-certificate?
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#:timeout timeout)
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(begin
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(format (current-error-port) "failed to download ~s from ~s~%"
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file url)
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;; Remove FILE in case we made an incomplete download, for
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;; example due to ENOSPC.
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(catch 'system-error
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(lambda ()
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(delete-file file))
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(const #f))
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#f))))))
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;;; download.scm ends here
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@ -406,12 +406,19 @@
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(plain-file "content-addressed-mirrors"
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(object->string %content-addressed-mirrors)))
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(define %disarchive-mirrors
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'("https://disarchive.ngyro.com/"))
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(define %disarchive-mirror-file
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(plain-file "disarchive-mirrors" (object->string %disarchive-mirrors)))
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(define built-in-builders*
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(store-lift built-in-builders))
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(define* (built-in-download file-name url
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#:key system hash-algo hash
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mirrors content-addressed-mirrors
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disarchive-mirrors
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executable?
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(guile 'unused))
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"Download FILE-NAME from URL using the built-in 'download' builder. When
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@ -422,13 +429,16 @@ explicitly depend on Guile, GnuTLS, etc. Instead, the daemon performs the
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download by itself using its own dependencies."
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(mlet %store-monad ((mirrors (lower-object mirrors))
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(content-addressed-mirrors
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(lower-object content-addressed-mirrors)))
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(lower-object content-addressed-mirrors))
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(disarchive-mirrors (lower-object disarchive-mirrors)))
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(raw-derivation file-name "builtin:download" '()
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#:system system
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#:hash-algo hash-algo
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#:hash hash
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#:recursive? executable?
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#:sources (list mirrors content-addressed-mirrors)
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#:sources (list mirrors
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content-addressed-mirrors
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disarchive-mirrors)
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;; Honor the user's proxy and locale settings.
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#:leaked-env-vars '("http_proxy" "https_proxy"
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@ -439,6 +449,7 @@ download by itself using its own dependencies."
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("mirrors" . ,mirrors)
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("content-addressed-mirrors"
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. ,content-addressed-mirrors)
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("disarchive-mirrors" . ,disarchive-mirrors)
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,@(if executable?
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'(("executable" . "1"))
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'()))
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@ -492,7 +503,9 @@ name in the store."
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#:executable? executable?
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#:mirrors %mirror-file
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#:content-addressed-mirrors
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%content-addressed-mirror-file)))))
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%content-addressed-mirror-file
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#:disarchive-mirrors
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%disarchive-mirror-file)))))
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(define* (url-fetch/executable url hash-algo hash
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#:optional name
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@ -54,7 +54,8 @@ actual output is different from that when we're doing a 'bmCheck' or
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(output* "out")
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(executable "executable")
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(mirrors "mirrors")
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(content-addressed-mirrors "content-addressed-mirrors"))
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(content-addressed-mirrors "content-addressed-mirrors")
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(disarchive-mirrors "disarchive-mirrors"))
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(unless url
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(leave (G_ "~a: missing URL~%") (derivation-file-name drv)))
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@ -79,6 +80,10 @@ actual output is different from that when we're doing a 'bmCheck' or
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(lambda (port)
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(eval (read port) %user-module)))
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'())
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#:disarchive-mirrors
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(if disarchive-mirrors
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(call-with-input-file disarchive-mirrors read)
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'())
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#:hashes `((,algo . ,hash))
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;; Since DRV's output hash is known, X.509 certificate
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