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;;; Guix Data Service -- Information about Guix over time
;;; Copyright © 2019 Christopher Baines <mail@cbaines.net>
;;;
;;; This program is free software: you can redistribute it and/or
;;; modify it under the terms of the GNU Affero General Public License
;;; as published by the Free Software Foundation, either version 3 of
;;; the License, or (at your option) any later version.
;;;
;;; This program is distributed in the hope that it will be useful,
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;;; Affero General Public License for more details.
;;;
;;; You should have received a copy of the GNU Affero General Public
;;; License along with this program. If not, see
;;; <http://www.gnu.org/licenses/>.
(define-module (guix-data-service branch-updated-emails)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-11)
#:use-module (srfi srfi-19)
#:use-module (email email)
#:use-module (squee)
#:use-module (guix store)
#:use-module (guix channels)
#:use-module (guix diagnostics)
#:use-module (guix-data-service database)
#:use-module (guix-data-service model git-repository)
#:use-module (guix-data-service model git-branch)
#:use-module (guix-data-service model git-commit)
#:use-module (guix-data-service jobs load-new-guix-revision)
#:export (enqueue-job-for-email))
(define commit-all-zeros
"0000000000000000000000000000000000000000")
(define (enqueue-job-for-email conn email)
(let* ((headers (email-headers email))
(date (assq-ref headers 'date))
(x-git-repo (assq-ref headers 'x-git-repo))
(x-git-reftype (assq-ref headers 'x-git-reftype))
(x-git-refname (assq-ref headers 'x-git-refname))
(x-git-newrev (assq-ref headers 'x-git-newrev)))
(when (and (and (string? x-git-reftype)
(string=? x-git-reftype "branch"))
(string? x-git-newrev))
(let ((branch-name
(string-drop x-git-refname 11))
(git-repository-id
(git-repository-x-git-repo-header->git-repository-id
conn
x-git-repo)))
(when git-repository-id
(let-values
(((included-branches excluded-branches)
(select-includes-and-excluded-branches-for-git-repository
conn
git-repository-id)))
(let ((excluded-branch?
(branch-in-list? excluded-branches branch-name))
(included-branch?
(branch-in-list? included-branches branch-name)))
(when (and (not excluded-branch?)
(or (null? included-branches)
included-branch?))
(if (string=? commit-all-zeros x-git-newrev)
(insert-git-commit-entry conn
(or (git-branch-for-repository-and-name
conn
git-repository-id
branch-name)
(insert-git-branch-entry
conn
git-repository-id
branch-name))
""
date)
;; Fetch the latest channel instance to check if this
;; email matches up with the current state of the Git
;; repository, and ignore it if it doesn't.
(let* ((git-repository-details
(select-git-repository conn git-repository-id))
(channel-for-commit
(channel (name 'guix)
(url (second git-repository-details))
(commit x-git-newrev)))
(channel-instance
;; Obtain a session level lock here, to avoid conflicts with
;; other jobs over the Git repository.
(with-advisory-session-lock
conn
'latest-channel-instances
(lambda ()
(parameterize ((current-output-port (%make-void-port "w"))
(current-error-port (%make-void-port "w"))
(guix-warning-port (%make-void-port "w")))
(with-store store
(first
(latest-channel-instances store
(list channel-for-commit)
#:authenticate?
(fourth git-repository-details)))))))))
(when (string=? (channel-instance-commit channel-instance)
x-git-newrev)
(with-postgresql-transaction
conn
(lambda (conn)
(exec-query conn "LOCK TABLE git_commits IN EXCLUSIVE MODE")
(unless (git-commit-exists? conn x-git-newrev)
(insert-git-commit-entry conn
(or (git-branch-for-repository-and-name
conn
git-repository-id
branch-name)
(insert-git-branch-entry
conn
git-repository-id
branch-name))
x-git-newrev
date)
(enqueue-load-new-guix-revision-job
conn
git-repository-id
x-git-newrev
(string-append x-git-repo " "
x-git-refname " updated"))))))))))))))))
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