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authorLudovic Courtès <ludo@gnu.org>2021-12-15 12:45:11 +0100
committerLudovic Courtès <ludo@gnu.org>2021-12-15 17:12:13 +0100
commit2a621f168faec09be7ed3f6b9351c24a472b19e4 (patch)
tree2e7d7e22057d5d73d9a3323426f1246524415d15 /guix/scripts
parentebbf7fc1c65d3c5e85ad7cfeef1fb9d73deb9195 (diff)
offload: Autoload Guile-SSH.
This halves the number of syscalls made by "guix offload" during startup and delays loading of Guile-SSH until there are actually machines to offload to. * guix/scripts/offload.scm: Remove unused module imports. Autoload many modules. (check-ssh-zlib-support): New procedure. (process-request): Call it when accepting. (guix-offload): Remove 'zlib-support?' check, now moved to 'check-ssh-zlib-support'.
Diffstat (limited to 'guix/scripts')
-rw-r--r--guix/scripts/offload.scm47
1 files changed, 27 insertions, 20 deletions
diff --git a/guix/scripts/offload.scm b/guix/scripts/offload.scm
index 29c3f5ec65..9ddf458c13 100644
--- a/guix/scripts/offload.scm
+++ b/guix/scripts/offload.scm
@@ -20,21 +20,26 @@
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (guix scripts offload)
- #:use-module (ssh key)
- #:use-module (ssh auth)
- #:use-module (ssh session)
- #:use-module (ssh channel)
- #:use-module (ssh popen)
- #:use-module (ssh version)
+ #:autoload (ssh key) (private-key-from-file
+ public-key-from-file)
+ #:autoload (ssh auth) (userauth-public-key!)
+ #:autoload (ssh session) (make-session
+ connect! get-error
+ disconnect! session-set!)
+ #:autoload (ssh version) (zlib-support?)
#:use-module (guix config)
#:use-module (guix records)
- #:use-module (guix ssh)
+ #:autoload (guix ssh) (authenticate-server*
+ connect-to-remote-daemon
+ send-files retrieve-files retrieve-files*
+ remote-inferior report-guile-error)
#:use-module (guix store)
- #:use-module (guix inferior)
- #:use-module (guix derivations)
- #:use-module ((guix serialization)
- #:select (nar-error? nar-error-file))
- #:use-module (guix nar)
+ #:autoload (guix inferior) (inferior-eval close-inferior inferior?)
+ #:autoload (guix derivations) (read-derivation-from-file
+ derivation-file-name
+ build-derivations)
+ #:autoload (guix serialization) (nar-error? nar-error-file)
+ #:autoload (guix nar) (restore-file-set)
#:use-module ((guix utils) #:select (%current-system))
#:use-module ((guix build syscalls)
#:select (fcntl-flock set-thread-name))
@@ -47,12 +52,10 @@
#:use-module (srfi srfi-26)
#:use-module (srfi srfi-34)
#:use-module (srfi srfi-35)
- #:use-module (ice-9 popen)
#:use-module (ice-9 rdelim)
#:use-module (ice-9 match)
#:use-module (ice-9 regex)
#:use-module (ice-9 format)
- #:use-module (ice-9 binary-ports)
#:export (build-machine
build-machine?
build-machine-name
@@ -560,6 +563,15 @@ expired."
If TIMEOUT is #f, simply evaluate EXP..."
(call-with-timeout timeout drv (lambda () exp ...)))
+(define (check-ssh-zlib-support)
+ "Warn once if libssh lacks zlib support."
+ ;; We rely on protocol-level compression from libssh to optimize large data
+ ;; transfers. Warn if it's missing.
+ (unless (zlib-support?)
+ (warning (G_ "Guile-SSH lacks zlib support"))
+ (warning (G_ "data transfers will *not* be compressed!")))
+ (set! check-ssh-zlib-support (const #t)))
+
(define* (process-request wants-local? system drv features
#:key
print-build-trace? (max-silent-time 3600)
@@ -584,6 +596,7 @@ If TIMEOUT is #f, simply evaluate EXP..."
(lambda ()
;; Offload DRV to MACHINE.
(display "# accept\n")
+ (check-ssh-zlib-support)
(let ((drv (read-derivation-from-file drv))
(inputs (string-tokenize (read-line)))
(outputs (string-tokenize (read-line))))
@@ -783,12 +796,6 @@ machine."
(and=> (passwd:dir (getpw (getuid)))
(cut setenv "HOME" <>))
- ;; We rely on protocol-level compression from libssh to optimize large data
- ;; transfers. Warn if it's missing.
- (unless (zlib-support?)
- (warning (G_ "Guile-SSH lacks zlib support"))
- (warning (G_ "data transfers will *not* be compressed!")))
-
(match args
((system max-silent-time print-build-trace? build-timeout)
(let ((max-silent-time (string->number max-silent-time))