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07/11: Improve select-job-for-commit


From: Christopher Baines
Subject: 07/11: Improve select-job-for-commit
Date: Fri, 9 Oct 2020 15:21:20 -0400 (EDT)

cbaines pushed a commit to branch master
in repository data-service.

commit 6023aa8caf6e7098109b756ca490ca73d0cbe559
Author: Christopher Baines <mail@cbaines.net>
AuthorDate: Fri Oct 9 19:31:51 2020 +0100

    Improve select-job-for-commit
    
    It now returns #f or a list, rather than the empty list or a nested list.
---
 guix-data-service/jobs/load-new-guix-revision.scm |  4 +-
 guix-data-service/web/compare/html.scm            | 20 ++++----
 guix-data-service/web/revision/html.scm           | 61 +++++++++++------------
 tests/jobs-load-new-guix-revision.scm             |  2 +-
 4 files changed, 44 insertions(+), 43 deletions(-)

diff --git a/guix-data-service/jobs/load-new-guix-revision.scm 
b/guix-data-service/jobs/load-new-guix-revision.scm
index de9d4a8..691cda1 100644
--- a/guix-data-service/jobs/load-new-guix-revision.scm
+++ b/guix-data-service/jobs/load-new-guix-revision.scm
@@ -1388,7 +1388,9 @@ GROUP BY 1, 2")
            "SELECT id, commit, source, git_repository_id "
            "FROM load_new_guix_revision_jobs WHERE commit = $1")
           (list commit))))
-    result))
+    (match result
+      (() #f)
+      ((job) job))))
 
 (define* (select-recent-job-events conn
                                    #:key (limit 8))
diff --git a/guix-data-service/web/compare/html.scm 
b/guix-data-service/web/compare/html.scm
index 684ca7e..8fdc80d 100644
--- a/guix-data-service/web/compare/html.scm
+++ b/guix-data-service/web/compare/html.scm
@@ -1034,26 +1034,26 @@
      (div (@ (class "container"))
           (h1 "Unknown commit")
           ,(if (invalid-query-parameter? base-commit)
-               (if (null? base-job)
-                   `(p "No known revision with commit "
-                       (strong (samp ,(invalid-query-parameter-value 
base-commit)))
-                       ".")
+               (if base-job
                    `(p "Revision "
                      (a (@ (href
                             ,(string-append "/revision/"
                                             (invalid-query-parameter-value 
base-commit))))
                         (strong (samp ,(invalid-query-parameter-value 
base-commit))))
-                     " is queued for processing."))
+                     " is queued for processing.")
+                   `(p "No known revision with commit "
+                       (strong (samp ,(invalid-query-parameter-value 
base-commit)))
+                       "."))
                '())
           ,(if (invalid-query-parameter? target-commit)
-               (if (null? target-job)
-                   `(p "No known revision with commit "
-                       (strong (samp ,(invalid-query-parameter-value 
target-commit)))
-                       ".")
+               (if target-job
                    `(p "Revision "
                        (a (@ (href
                               ,(string-append "/revision/"
                                               (invalid-query-parameter-value 
target-commit))))
                           (strong (samp ,(invalid-query-parameter-value 
target-commit))))
-                       " is queued for processing."))
+                       " is queued for processing.")
+                   `(p "No known revision with commit "
+                       (strong (samp ,(invalid-query-parameter-value 
target-commit)))
+                       "."))
                '())))))
diff --git a/guix-data-service/web/revision/html.scm 
b/guix-data-service/web/revision/html.scm
index 32cd3ec..77a3e13 100644
--- a/guix-data-service/web/revision/html.scm
+++ b/guix-data-service/web/revision/html.scm
@@ -2147,36 +2147,35 @@ figure {
    `(,(header)
      (div
       (@ (class "container"))
-      ,@(match job
-          (()
-           `((h1 "Unknown revision")
-             (p "No known revision with commit "
-                (strong (samp ,commit-hash)))))
-          ((jobs ...)
-           `((div
-              (@ (class "row"))
-              (div
-               (@ (class "col-md-12"))
-               (h1 (@ (style "white-space: nowrap;"))
-                   "Revision " (samp ,commit-hash))))
-             (div
-              (@ (class "row"))
+      ,@(if job
+            `((div
+               (@ (class "row"))
+               (div
+                (@ (class "col-md-12"))
+                (h1 (@ (style "white-space: nowrap;"))
+                    "Revision " (samp ,commit-hash))))
               (div
-               (@ (class "col-md-6"))
-               (h2 "Packages")
-               (strong (@ (class "text-center")
-                          (style "font-size: 2em; display: block;"))
-                       "Unknown")
+               (@ (class "row"))
+               (div
+                (@ (class "col-md-6"))
+                (h2 "Packages")
+                (strong (@ (class "text-center")
+                           (style "font-size: 2em; display: block;"))
+                        "Unknown")
+
+                ,@(if (null? git-repositories-and-branches)
+                      '()
+                      (view-revision/git-repositories
+                       git-repositories-and-branches
+                       commit-hash))
+                ,@(view-revision/jobs-and-events jobs-and-events))
+               (div
+                (@ (class "col-md-6"))
+                (h3 "Derivations")
+                (strong (@ (class "text-center")
+                           (style "font-size: 2em; display: block;"))
+                        "Unknown"))))
+            `((h1 "Unknown revision")
+              (p "No known revision with commit "
+                 (strong (samp ,commit-hash)))))))))
 
-               ,@(if (null? git-repositories-and-branches)
-                     '()
-                     (view-revision/git-repositories
-                      git-repositories-and-branches
-                      commit-hash))
-               ,@(view-revision/jobs-and-events jobs-and-events))
-              (div
-               (@ (class "col-md-6"))
-               (h3 "Derivations")
-               (strong (@ (class "text-center")
-                          (style "font-size: 2em; display: block;"))
-                       "Unknown"))))))))))
diff --git a/tests/jobs-load-new-guix-revision.scm 
b/tests/jobs-load-new-guix-revision.scm
index 99acfa7..7d722af 100644
--- a/tests/jobs-load-new-guix-revision.scm
+++ b/tests/jobs-load-new-guix-revision.scm
@@ -21,7 +21,7 @@
    (exec-query conn "TRUNCATE guix_revisions CASCADE")
 
    (test-equal "select-job-for-commit works"
-     '()
+     #f
      (select-job-for-commit conn "does not exist"))
 
    (exec-query conn "TRUNCATE guix_revisions CASCADE")



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