~ruther/guix-local

dcf0cca8d7d9771f0337e8a3b28653b9a459755d — Christopher Baines 2 years ago d9276a4
scripts: substitute: Allow not using with-timeout in download-nar.

I don't think the approach of using SIGALARM here for the timeout will work
well in all cases (e.g. when using Guile Fibers), so make it possible to avoid
this.

* guix/scripts/substitute.scm (download-nar): Pass the fetch timeout in as an
option.

Change-Id: I8cbe6cdfa10cdaa7d41974cbea56a95f5efecfe6
1 files changed, 22 insertions(+), 15 deletions(-)

M guix/scripts/substitute.scm
M guix/scripts/substitute.scm => guix/scripts/substitute.scm +22 -15
@@ 452,7 452,8 @@ server certificates."

(define* (download-nar narinfo destination
                       #:key status-port
                       deduplicate? print-build-trace?)
                       deduplicate? print-build-trace?
                       (fetch-timeout %fetch-timeout))
  "Download the nar prescribed in NARINFO, which is assumed to be authentic
and authorized, and write it to DESTINATION.  When DEDUPLICATE? is true, and
if DESTINATION is in the store, deduplicate its files.  Print a status line to


@@ 473,20 474,26 @@ STATUS-PORT."
       (let ((port (open-file (uri-path uri) "r0b")))
         (values port (stat:size (stat port)))))
      ((http https)
       ;; Test this with:
       ;;   sudo tc qdisc add dev eth0 root netem delay 1500ms
       ;; and then cancel with:
       ;;   sudo tc qdisc del dev eth0 root
       (with-timeout %fetch-timeout
         (begin
           (warning (G_ "while fetching ~a: server is somewhat slow~%")
                    (uri->string uri))
           (warning (G_ "try `--no-substitutes' if the problem persists~%")))
         (with-cached-connection uri port
           (http-fetch uri #:text? #f
                       #:port port
                       #:keep-alive? #t
                       #:buffered? #f))))
       (if fetch-timeout
           ;; Test this with:
           ;;   sudo tc qdisc add dev eth0 root netem delay 1500ms
           ;; and then cancel with:
           ;;   sudo tc qdisc del dev eth0 root
           (with-timeout %fetch-timeout
             (begin
               (warning (G_ "while fetching ~a: server is somewhat slow~%")
                        (uri->string uri))
               (warning (G_ "try `--no-substitutes' if the problem persists~%")))
             (with-cached-connection uri port
               (http-fetch uri #:text? #f
                           #:port port
                           #:keep-alive? #t
                           #:buffered? #f)))
           (with-cached-connection uri port
             (http-fetch uri #:text? #f
                         #:port port
                         #:keep-alive? #t
                         #:buffered? #f))))
      (else
       (leave (G_ "unsupported substitute URI scheme: ~a~%")
              (uri->string uri)))))