@@ -27554,6 +27554,56 @@ The Guile package with which to run the Guix Build Coordinator.
@end table
@end deftp
+@defvar {Scheme Variable} guix-build-coordinator-agent-service-type
+Service type for a Guix Build Coordinator agent. Its value must be a
+@code{guix-build-coordinator-agent-configuration} object.
+@end defvar
+
+@deftp {Data Type} guix-build-coordinator-agent-configuration
+Data type representing the configuration a Guix Build Coordinator agent.
+
+@table @asis
+@item @code{package} (default: @code{guix-build-coordinator})
+The Guix Build Coordinator package to use.
+
+@item @code{user} (default: @code{"guix-build-coordinator-agent"})
+The system user to run the service as.
+
+@item @code{coordinator} (default: @code{"http://localhost:8745"})
+The URI to use when connecting to the coordinator.
+
+@item @code{uuid}
+The UUID of the agent. This should be generated by the coordinator
+process, stored in the coordinator database, and used by the intended
+agent.
+
+@item @code{password} (default: @code{#f})
+The password to use when connecting to the coordinator. A file to read
+the password from can also be specified, and this is more secure.
+
+@item @code{password-file} (default: @code{#f})
+A file containing the password to use when connecting to the
+coordinator.
+
+@item @code{systems} (default: @var{#f})
+The systems for which this agent should fetch builds. The agent process
+will use the current system it's running on as the default.
+
+@item @code{max-parallel-builds} (default: @code{1})
+The number of builds to perform in parallel.
+
+@item @code{derivation-substitute-urls} (default: @code{1})
+URLs from which to attempt to fetch substitutes for derivations, if the
+derivations aren't already available.
+
+@item @code{non-derivation-substitute-urls} (default: @code{1})
+URLs from which to attempt to fetch substitutes for build inputs, if the
+input store items aren't already available.
+
+@end table
+@end deftp
+
+
@subsubheading Guix Data Service
The @uref{http://data.guix.gnu.org,Guix Data Service} processes, stores
and provides data about GNU Guix. This includes information about
@@ -50,6 +50,21 @@
guix-build-coordinator-service-type
+ guix-build-coordinator-agent-configuration
+ guix-build-coordinator-agent-configuration?
+ guix-build-coordinator-agent-configuration-package
+ guix-build-coordinator-agent-configuration-user
+ guix-build-coordinator-agent-configuration-coordinator
+ guix-build-coordinator-agent-configuration-uuid
+ guix-build-coordinator-agent-configuration-password
+ guix-build-coordinator-agent-configuration-password-file
+ guix-build-coordinator-agent-configuration-systems
+ guix-build-coordinator-agent-configuration-max-parallel-builds
+ guix-build-coordinator-agent-configuration-derivation-substitute-urls
+ guix-build-coordinator-agent-configuration-non-derivation-substitute-urls
+
+ guix-build-coordinator-agent-service-type
+
<guix-data-service-configuration>
guix-data-service-configuration
guix-data-service-configuration?
@@ -95,6 +110,33 @@
(guile guix-build-coordinator-configuration-guile
(default guile-3.0-latest)))
+(define-record-type* <guix-build-coordinator-agent-configuration>
+ guix-build-coordinator-agent-configuration
+ make-guix-build-coordinator-agent-configuration
+ guix-build-coordinator-agent-configuration?
+ (package guix-build-coordinator-agent-configuration-package
+ (default guix-build-coordinator))
+ (user guix-build-coordinator-agent-configuration-user
+ (default "guix-build-coordinator-agent"))
+ (coordinator guix-build-coordinator-agent-configuration-coordinator
+ (default "http://localhost:8745"))
+ (uuid guix-build-coordinator-agent-configuration-uuid)
+ (password guix-build-coordinator-agent-configuration-password
+ (default #f))
+ (password-file guix-build-coordinator-agent-configuration-password-file
+ (default #f))
+ (systems guix-build-coordinator-agent-configuration-systems
+ (default #f))
+ (max-parallel-builds
+ guix-build-coordinator-agent-configuration-max-parallel-builds
+ (default 1))
+ (derivation-substitute-urls
+ guix-build-coordinator-agent-configuration-derivation-substitute-urls
+ (default #f))
+ (non-derivation-substitute-urls
+ guix-build-coordinator-agent-configuration-non-derivation-substitute-urls
+ (default #f)))
+
(define* (make-guix-build-coordinator-start-script database-uri-string
allocation-strategy
pid-file
@@ -239,6 +281,85 @@
(description
"Run an instance of the Guix Build Coordinator.")))
+(define (guix-build-coordinator-agent-shepherd-services config)
+ (match-record config <guix-build-coordinator-agent-configuration>
+ (package user coordinator uuid password password-file max-parallel-builds
+ derivation-substitute-urls non-derivation-substitute-urls
+ systems)
+ (list
+ (shepherd-service
+ (documentation "Guix Build Coordinator Agent")
+ (provision '(guix-build-coordinator-agent))
+ (requirement '(networking))
+ (start #~(make-forkexec-constructor
+ (list #$(file-append package "/bin/guix-build-coordinator-agent")
+ #$(string-append "--coordinator=" coordinator)
+ #$(string-append "--uuid=" uuid)
+ #$@(if password
+ #~(#$(string-append "--password=" password))
+ #~())
+ #$@(if password-file
+ #~(#$(string-append "--password-file=" password-file))
+ #~())
+ #$(simple-format #f "--max-parallel-builds=~A"
+ max-parallel-builds)
+ #$@(if derivation-substitute-urls
+ #~(#$(string-append
+ "--derivation-substitute-urls="
+ (string-join derivation-substitute-urls " ")))
+ #~())
+ #$@(if non-derivation-substitute-urls
+ #~(#$(string-append
+ "--non-derivation-substitute-urls="
+ (string-join derivation-substitute-urls " ")))
+ #~())
+ #$@(map (lambda (system)
+ (string-append "--system=" system))
+ (or systems '())))
+ #:user #$user
+ #:pid-file "/var/run/guix-build-coordinator-agent/pid"
+ #:environment-variables
+ `(,(string-append
+ "GUIX_LOCPATH=" #$glibc-utf8-locales "/lib/locale")
+ "LC_ALL=en_US.utf8")
+ #:log-file "/var/log/guix-build-coordinator/agent.log"))
+ (stop #~(make-kill-destructor))))))
+
+(define (guix-build-coordinator-agent-activation config)
+ #~(begin
+ (use-modules (guix build utils))
+
+ (mkdir-p "/var/log/guix-build-coordinator")
+
+ ;; Allow writing the PID file
+ (mkdir-p "/var/run/guix-build-coordinator-agent")
+ (chown "/var/run/guix-build-coordinator-agent"
+ (passwd:uid %user)
+ (passwd:gid %user))))
+
+(define (guix-build-coordinator-agent-account config)
+ (list (user-account
+ (name (guix-build-coordinator-agent-configuration-user config))
+ (group "nogroup")
+ (system? #t)
+ (comment "Guix Build Coordinator agent user")
+ (home-directory "/var/empty")
+ (shell (file-append shadow "/sbin/nologin")))))
+
+(define guix-build-coordinator-agent-service-type
+ (service-type
+ (name 'guix-build-coordinator-agent)
+ (extensions
+ (list
+ (service-extension shepherd-root-service-type
+ guix-build-coordinator-agent-shepherd-services)
+ (service-extension activation-service-type
+ guix-build-coordinator-agent-activation)
+ (service-extension account-service-type
+ guix-build-coordinator-agent-account)))
+ (description
+ "Run a Guix Build Coordinator agent.")))
+
;;;
;;; Guix Data Service