diff options
Diffstat (limited to 'guix/scripts/substitute.scm')
| -rwxr-xr-x | guix/scripts/substitute.scm | 39 |
1 files changed, 34 insertions, 5 deletions
diff --git a/guix/scripts/substitute.scm b/guix/scripts/substitute.scm index 6892aa999b..812f2999ab 100755 --- a/guix/scripts/substitute.scm +++ b/guix/scripts/substitute.scm @@ -45,6 +45,7 @@ #:select (uri-abbreviation nar-uri-abbreviation (open-connection-for-uri . guix:open-connection-for-uri))) + #:autoload (gnutls) (error/invalid-session) #:use-module (guix progress) #:use-module ((guix build syscalls) #:select (set-thread-name)) @@ -377,6 +378,32 @@ server certificates." (drain-input socket) socket)))))))) +(define (call-with-cached-connection uri proc) + (let ((port (open-connection-for-uri/cached uri + #:verify-certificate? #f))) + (catch #t + (lambda () + (proc port)) + (lambda (key . args) + ;; If PORT was cached and the server closed the connection in the + ;; meantime, we get EPIPE. In that case, open a fresh connection + ;; and retry. We might also get 'bad-response or a similar + ;; exception from (web response) later on, once we've sent the + ;; request, or a ERROR/INVALID-SESSION from GnuTLS. + (if (or (and (eq? key 'system-error) + (= EPIPE (system-error-errno `(,key ,@args)))) + (and (eq? key 'gnutls-error) + (eq? (first args) error/invalid-session)) + (memq key '(bad-response bad-header bad-header-component))) + (proc (open-connection-for-uri/cached uri + #:verify-certificate? #f + #:fresh? #t)) + (apply throw key args)))))) + +(define-syntax-rule (with-cached-connection uri port exp ...) + "Bind PORT with EXP... to a socket connected to URI." + (call-with-cached-connection uri (lambda (port) exp ...))) + (define* (process-substitution store-item destination #:key cache-urls acl deduplicate? print-build-trace?) @@ -424,11 +451,11 @@ the current output port." (call-with-connection-error-handling uri (lambda () - (http-fetch uri #:text? #f - #:open-connection open-connection-for-uri/cached - #:keep-alive? #t - #:buffered? #f - #:verify-certificate? #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))))) @@ -715,6 +742,8 @@ if needed, as expected by the daemon's agent." ;;; Local Variables: ;;; eval: (put 'with-timeout 'scheme-indent-function 1) ;;; eval: (put 'with-redirected-error-port 'scheme-indent-function 0) +;;; eval: (put 'with-cached-connection 'scheme-indent-function 2) +;;; eval: (put 'call-with-cached-connection 'scheme-indent-function 1) ;;; End: ;;; substitute.scm ends here |