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authorLudovic Courtès <ludo@gnu.org>2017-04-19 17:16:21 +0200
committerLudovic Courtès <ludo@gnu.org>2017-04-19 17:51:39 +0200
commita35136cb564123932dbab2e3f319b344ecdca555 (patch)
tree204bfbe8c3a27d8a7b93ad964edd5aa7bc5f3aa6
parent2363bdd707ba382d89c96e03c04038c047d7228c (diff)
services: guix-publish: Add 'cache', 'workers', and 'ttl' config knobs.
* gnu/services/base.scm (<guix-publish-configuration>)[cache, workers, ttl]: New fields. (guix-publish-shepherd-service): Honor them. (guix-publish-activation): New procedure. (guix-publish-service-type): Extend ACTIVATION-SERVICE-TYPE. * doc/guix.texi (Base Services): Document it.
-rw-r--r--doc/guix.texi17
-rw-r--r--gnu/services/base.scm46
2 files changed, 59 insertions, 4 deletions
diff --git a/doc/guix.texi b/doc/guix.texi
index f2eba59d9c..a482beea50 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -9145,6 +9145,23 @@ compression ratio at the expense of increased CPU usage.
@item @code{nar-path} (default: @code{"nar"})
The URL path at which ``nars'' can be fetched. @xref{Invoking guix
publish, @code{--nar-path}}, for details.
+
+@item @code{cache} (default: @code{#f})
+When it is @code{#f}, disable caching and instead generate archives on
+demand. Otherwise, this should be the name of a directory---e.g.,
+@code{"/var/cache/guix/publish"}---where @command{guix publish} caches
+archives and meta-data ready to be sent. @xref{Invoking guix publish,
+@option{--cache}}, for more information on the tradeoffs involved.
+
+@item @code{workers} (default: @code{#f})
+When it is an integer, this is the number of worker threads used for
+caching; when @code{#f}, the number of processors is used.
+@xref{Invoking guix publish, @option{--workers}}, for more information.
+
+@item @code{ttl} (default: @code{#f})
+When it is an integer, this denotes the @dfn{time-to-live} of the
+published archives. @xref{Invoking guix publish, @option{--ttl}}, for
+more information.
@end table
@end deftp
diff --git a/gnu/services/base.scm b/gnu/services/base.scm
index fae992f0db..67972bf614 100644
--- a/gnu/services/base.scm
+++ b/gnu/services/base.scm
@@ -129,6 +129,8 @@
guix-publish-configuration-host
guix-publish-configuration-compression-level
guix-publish-configuration-nar-path
+ guix-publish-configuration-cache
+ guix-publish-configuration-ttl
guix-publish-service
guix-publish-service-type
@@ -1445,11 +1447,18 @@ failed to register hydra.gnu.org public key: ~a~%" status))))))))
(compression-level guix-publish-configuration-compression-level ;integer
(default 3))
(nar-path guix-publish-configuration-nar-path ;string
- (default "nar")))
+ (default "nar"))
+ (cache guix-publish-configuration-cache ;#f | string
+ (default #f))
+ (workers guix-publish-configuration-workers ;#f | integer
+ (default #f))
+ (ttl guix-publish-configuration-ttl ;#f | integer
+ (default #f)))
(define guix-publish-shepherd-service
(match-lambda
- (($ <guix-publish-configuration> guix port host compression nar-path)
+ (($ <guix-publish-configuration> guix port host compression
+ nar-path cache workers ttl)
(list (shepherd-service
(provision '(guix-publish))
(requirement '(guix-daemon))
@@ -1459,7 +1468,20 @@ failed to register hydra.gnu.org public key: ~a~%" status))))))))
"-p" #$(number->string port)
"-C" #$(number->string compression)
(string-append "--nar-path=" #$nar-path)
- (string-append "--listen=" #$host))))
+ (string-append "--listen=" #$host)
+ #$@(if workers
+ #~((string-append "--workers="
+ #$(number->string
+ workers)))
+ #~())
+ #$@(if ttl
+ #~((string-append "--ttl="
+ #$(number->string ttl)
+ "s"))
+ #~())
+ #$@(if cache
+ #~((string-append "--cache=" #$cache))
+ #~()))))
(stop #~(make-kill-destructor)))))))
(define %guix-publish-accounts
@@ -1472,13 +1494,29 @@ failed to register hydra.gnu.org public key: ~a~%" status))))))))
(home-directory "/var/empty")
(shell (file-append shadow "/sbin/nologin")))))
+(define (guix-publish-activation config)
+ (let ((cache (guix-publish-configuration-cache config)))
+ (if cache
+ (with-imported-modules '((guix build utils))
+ #~(begin
+ (use-modules (guix build utils))
+
+ (mkdir-p #$cache)
+ (let* ((pw (getpw "guix-publish"))
+ (uid (passwd:uid pw))
+ (gid (passwd:gid pw)))
+ (chown #$cache uid gid))))
+ #t)))
+
(define guix-publish-service-type
(service-type (name 'guix-publish)
(extensions
(list (service-extension shepherd-root-service-type
guix-publish-shepherd-service)
(service-extension account-service-type
- (const %guix-publish-accounts))))
+ (const %guix-publish-accounts))
+ (service-extension activation-service-type
+ guix-publish-activation)))
(default-value (guix-publish-configuration))))
(define* (guix-publish-service #:key (guix guix) (port 80) (host "localhost"))