services: guix: Add guix-build-coordinator-service-type.
* gnu/services/guix.scm (<guix-build-coordinator-configuration>): New record type. (guix-build-coordinator-configuration, guix-build-coordinator-configuration?, guix-build-coordinator-configuration-package, guix-build-coordinator-configuration-user, guix-build-coordinator-configuration-group, guix-build-coordinator-configuration-datastore-uri-string, guix-build-coordinator-configuration-agent-communication-uri-string, guix-build-coordinator-configuration-client-communication-uri-string, guix-build-coordinator-configuration-allocation-strategy, guix-build-coordinator-configuration-hooks, guix-build-coordinator-configuration-guile, make-guix-build-coordinator-start-script, guix-build-coordinator-shepherd-services, guix-build-coordinator-activation, guix-build-coordinator-account): New procedures. (guix-build-coordinator-service-type): New variable. * gnu/tests/guix.scm (%test-guix-build-coordinator): New variable. * doc/guix.texi (Guix Services): Document it.
This commit is contained in:
Christopher Baines
parent
c2cb0e462c
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15955e9b54
@ -27764,6 +27764,73 @@ The complete list of possible options can be found in the man page for
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@node Guix Services
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@subsection Guix Services
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@subsubheading Guix Build Coordinator
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The @uref{https://git.cbaines.net/guix/build-coordinator/,Guix Build
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Coordinator} aids in distributing derivation builds among machines
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running an @dfn{agent}. The build daemon is still used to build the
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derivations, but the Guix Build Coordinator manages allocating builds
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and working with the results.
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@quotation Note
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This service is considered experimental. Configuration options may be
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changed in a backwards-incompatible manner, and not all features have
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been thorougly tested.
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@end quotation
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The Guix Build Coordinator consists of one @dfn{coordinator}, and one or
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more connected @dfn{agent} processes. The coordinator process handles
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clients submitting builds, and allocating builds to agents. The agent
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processes talk to a build daemon to actually perform the builds, then
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send the results back to the coordinator.
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There is a script to run the coordinator component of the Guix Build
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Coordinator, but the Guix service uses a custom Guile script instead, to
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provide better integration with G-expressions used in the configuration.
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@defvar {Scheme Variable} guix-build-coordinator-service-type
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Service type for the Guix Build Coordinator. Its value must be a
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@code{guix-build-coordinator-configuration} object.
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@end defvar
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@deftp {Data Type} guix-build-coordinator-configuration
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Data type representing the configuration of the Guix Build Coordinator.
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@table @asis
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@item @code{package} (default: @code{guix-build-coordinator})
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The Guix Build Coordinator package to use.
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@item @code{user} (default: @code{"guix-build-coordinator"})
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The system user to run the service as.
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@item @code{group} (default: @code{"guix-build-coordinator"})
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The system group to run the service as.
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@item @code{database-uri-string} (default: @code{"sqlite:///var/lib/guix-build-coordinator/guix_build_coordinator.db"})
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The URI to use for the database.
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@item @code{agent-communication-uri} (default: @code{"http://0.0.0.0:8745"})
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The URI describing how to listen to requests from agent processes.
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@item @code{client-communication-uri} (default: @code{"http://127.0.0.1:8746"})
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The URI describing how to listen to requests from clients. The client
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API allows submitting builds and currently isn't authenticated, so take
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care when configuring this value.
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@item @code{allocation-strategy} (default: @code{#~basic-build-allocation-strategy})
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A G-expression for the allocation strategy to be used. This is a
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procedure that takes the datastore as an argument and populates the
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allocation plan in the database.
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@item @code{hooks} (default: @var{'()})
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An association list of hooks. These provide a way to execute arbitrary
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code upon certian events, like a build result being processed.
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@item @code{guile} (default: @code{guile-3.0-latest})
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The Guile package with which to run the Guix Build Coordinator.
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@end table
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@end deftp
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@subsubheading Guix Data Service
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The @uref{http://data.guix.gnu.org,Guix Data Service} processes, stores
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and provides data about GNU Guix. This includes information about
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@ -17,20 +17,40 @@
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (gnu services guix)
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#:use-module (srfi srfi-1)
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#:use-module (ice-9 match)
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#:use-module (guix gexp)
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#:use-module (guix records)
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#:use-module (guix packages)
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#:use-module ((gnu packages base)
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#:select (glibc-utf8-locales))
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#:use-module (gnu packages admin)
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#:use-module (gnu packages databases)
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#:use-module (gnu packages web)
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#:use-module (gnu packages guile)
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#:use-module (gnu packages guile-xyz)
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#:use-module (gnu packages package-management)
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#:use-module (gnu services)
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#:use-module (gnu services base)
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#:use-module (gnu services admin)
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#:use-module (gnu services shepherd)
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#:use-module (gnu services getmail)
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#:use-module (gnu system shadow)
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#:export (<guix-data-service-configuration>
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#:export (guix-build-coordinator-configuration
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guix-build-coordinator-configuration?
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guix-build-coordinator-configuration-package
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guix-build-coordinator-configuration-user
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guix-build-coordinator-configuration-group
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guix-build-coordinator-configuration-datastore-uri-string
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guix-build-coordinator-configuration-agent-communication-uri-string
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guix-build-coordinator-configuration-client-communication-uri-string
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guix-build-coordinator-configuration-allocation-strategy
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guix-build-coordinator-configuration-hooks
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guix-build-coordinator-configuration-guile
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guix-build-coordinator-service-type
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<guix-data-service-configuration>
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guix-data-service-configuration
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guix-data-service-configuration?
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guix-data-service-package
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@ -45,11 +65,185 @@
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;;;; Commentary:
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;;;
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;;; This module implements a service that to run instances of the Guix Data
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;;; Service, which provides data about Guix over time.
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;;; Services specifically related to GNU Guix.
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;;;
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;;;; Code:
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(define-record-type* <guix-build-coordinator-configuration>
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guix-build-coordinator-configuration make-guix-build-coordinator-configuration
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guix-build-coordinator-configuration?
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(package guix-build-coordinator-configuration-package
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(default guix-build-coordinator))
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(user guix-build-coordinator-configuration-user
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(default "guix-build-coordinator"))
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(group guix-build-coordinator-configuration-group
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(default "guix-build-coordinator"))
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(database-uri-string
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guix-build-coordinator-configuration-datastore-uri-string
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(default "sqlite:///var/lib/guix-build-coordinator/guix_build_coordinator.db"))
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(agent-communication-uri-string
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guix-build-coordinator-configuration-agent-communication-uri-string
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(default "http://0.0.0.0:8745"))
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(client-communication-uri-string
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guix-build-coordinator-configuration-client-communication-uri-string
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(default "http://127.0.0.1:8746"))
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(allocation-strategy
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guix-build-coordinator-configuration-allocation-strategy
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(default #~basic-build-allocation-strategy))
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(hooks guix-build-coordinator-configuration-hooks
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(default '()))
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(guile guix-build-coordinator-configuration-guile
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(default guile-3.0-latest)))
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(define* (make-guix-build-coordinator-start-script database-uri-string
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allocation-strategy
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pid-file
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guix-build-coordinator-package
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#:key
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agent-communication-uri-string
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client-communication-uri-string
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(hooks '())
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(guile guile-3.0))
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(program-file
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"start-guix-build-coordinator"
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(with-extensions (cons guix-build-coordinator-package
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;; This is a poorly constructed Guile load path,
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;; since it contains things that aren't Guile
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;; libraries, but it means that the Guile libraries
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;; needed for the Guix Build Coordinator don't need
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;; to be individually specified here.
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(map second (package-inputs
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guix-build-coordinator-package)))
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#~(begin
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(use-modules (srfi srfi-1)
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(ice-9 match)
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(web uri)
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(prometheus)
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(guix-build-coordinator hooks)
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(guix-build-coordinator datastore)
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(guix-build-coordinator build-allocator)
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(guix-build-coordinator coordinator))
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(let* ((metrics-registry (make-metrics-registry
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#:namespace
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"guixbuildcoordinator_"))
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(datastore (database-uri->datastore
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#$database-uri-string
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#:metrics-registry metrics-registry))
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(hooks
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(list #$@(map (match-lambda
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((name . hook-gexp)
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#~(cons name #$hook-gexp)))
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hooks)))
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(hooks-with-defaults
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`(,@hooks
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,@(remove (match-lambda
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((name . _) (assq-ref hooks name)))
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%default-hooks)))
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(build-coordinator (make-build-coordinator
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#:datastore datastore
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#:hooks hooks-with-defaults
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#:metrics-registry metrics-registry
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#:allocation-strategy #$allocation-strategy)))
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(run-coordinator-service
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build-coordinator
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#:update-datastore? #t
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#:pid-file #$pid-file
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#:agent-communication-uri (string->uri
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#$agent-communication-uri-string)
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#:client-communication-uri (string->uri
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#$client-communication-uri-string)))))
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#:guile guile))
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(define (guix-build-coordinator-shepherd-services config)
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(match-record config <guix-build-coordinator-configuration>
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(package user group database-uri-string
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agent-communication-uri-string
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client-communication-uri-string
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allocation-strategy
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hooks
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guile)
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(list
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(shepherd-service
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(documentation "Guix Build Coordinator")
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(provision '(guix-build-coordinator))
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(requirement '(networking))
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(start #~(make-forkexec-constructor
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(list #$(make-guix-build-coordinator-start-script
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database-uri-string
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allocation-strategy
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"/var/run/guix-build-coordinator/pid"
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package
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#:agent-communication-uri-string
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agent-communication-uri-string
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#:client-communication-uri-string
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client-communication-uri-string
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#:hooks hooks
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#:guile guile))
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#:user #$user
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#:group #$group
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#:pid-file "/var/run/guix-build-coordinator/pid"
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;; Allow time for migrations to run
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#:pid-file-timeout 60
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#:environment-variables
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`(,(string-append
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"GUIX_LOCPATH=" #$glibc-utf8-locales "/lib/locale")
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"LC_ALL=en_US.utf8")
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#:log-file "/var/log/guix-build-coordinator/coordinator.log"))
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(stop #~(make-kill-destructor))))))
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(define (guix-build-coordinator-activation config)
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#~(begin
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(use-modules (guix build utils))
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(define %user (getpw "guix-build-coordinator"))
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(chmod "/var/lib/guix-build-coordinator" #o755)
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(mkdir-p "/var/log/guix-build-coordinator")
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;; Allow writing the PID file
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(mkdir-p "/var/run/guix-build-coordinator")
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(chown "/var/run/guix-build-coordinator"
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(passwd:uid %user)
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(passwd:gid %user))))
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(define (guix-build-coordinator-account config)
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(match-record config <guix-build-coordinator-configuration>
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(user group)
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(list (user-group
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(name group)
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(system? #t))
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(user-account
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(name user)
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(group group)
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(system? #t)
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(comment "Guix Build Coordinator user")
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(home-directory "/var/lib/guix-build-coordinator")
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(shell (file-append shadow "/sbin/nologin"))))))
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(define guix-build-coordinator-service-type
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(service-type
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(name 'guix-build-coordinator)
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(extensions
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(list
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(service-extension shepherd-root-service-type
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guix-build-coordinator-shepherd-services)
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(service-extension activation-service-type
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guix-build-coordinator-activation)
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(service-extension account-service-type
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guix-build-coordinator-account)))
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(default-value
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(guix-build-coordinator-configuration))
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(description
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"Run an instance of the Guix Build Coordinator.")))
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;;;
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;;; Guix Data Service
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;;;
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(define-record-type* <guix-data-service-configuration>
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guix-data-service-configuration make-guix-data-service-configuration
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guix-data-service-configuration?
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@ -35,7 +35,80 @@
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#:use-module (guix store)
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#:use-module (guix utils)
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#:use-module (ice-9 match)
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#:export (%test-guix-data-service))
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#:export (%test-guix-build-coordinator
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%test-guix-data-service))
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;;;
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;;; Guix Build Coordinator
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;;;
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(define %guix-build-coordinator-os
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(simple-operating-system
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(service dhcp-client-service-type)
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(service guix-build-coordinator-service-type)))
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(define (run-guix-build-coordinator-test)
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(define os
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(marionette-operating-system
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%guix-build-coordinator-os
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#:imported-modules '((gnu services herd)
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(guix combinators))))
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(define forwarded-port 8745)
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(define vm
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(virtual-machine
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(operating-system os)
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(memory-size 1024)
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(port-forwardings `((,forwarded-port . 8745)))))
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(define test
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(with-imported-modules '((gnu build marionette))
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#~(begin
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(use-modules (srfi srfi-11) (srfi srfi-64)
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(gnu build marionette)
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(web uri)
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(web client)
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(web response))
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(define marionette
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(make-marionette (list #$vm)))
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(mkdir #$output)
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(chdir #$output)
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(test-begin "guix-build-coordinator")
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(test-assert "service running"
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(marionette-eval
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'(begin
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(use-modules (gnu services herd))
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(match (start-service 'guix-build-coordinator)
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(#f #f)
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(('service response-parts ...)
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(match (assq-ref response-parts 'running)
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((pid) (number? pid))))))
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marionette))
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(test-equal "http-get"
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200
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(let-values
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(((response text)
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(http-get #$(simple-format
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#f "http://localhost:~A/metrics" forwarded-port)
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#:decode-body? #t)))
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(response-code response)))
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(test-end)
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(exit (= (test-runner-fail-count (test-runner-current)) 0)))))
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(gexp->derivation "guix-build-coordinator-test" test))
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(define %test-guix-build-coordinator
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(system-test
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(name "guix-build-coordinator")
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(description "Connect to a running Guix Build Coordinator.")
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(value (run-guix-build-coordinator-test))))
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;;;
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