From 8dc1fae03d5519cf28bedc73b082e187e0d67c90 Mon Sep 17 00:00:00 2001
From: Ian Baum <ibaum@gitlab.com>
Date: Sat, 17 Feb 2018 16:50:08 +0000
Subject: Merge branch 'revert-215dff76' into 'master'

Revert "Merge branch 'expired-ci-artifacts' into 'master'"

See merge request gitlab-org/gitlab-ce!17193
---
 app/models/ci/build.rb                         | 37 +++-----------------------
 changelogs/unreleased/expired-ci-artifacts.yml |  5 ----
 2 files changed, 4 insertions(+), 38 deletions(-)
 delete mode 100644 changelogs/unreleased/expired-ci-artifacts.yml

diff --git a/app/models/ci/build.rb b/app/models/ci/build.rb
index 7312e704932..20534b8eed0 100644
--- a/app/models/ci/build.rb
+++ b/app/models/ci/build.rb
@@ -41,41 +41,12 @@ module Ci
 
     scope :unstarted, ->() { where(runner_id: nil) }
     scope :ignore_failures, ->() { where(allow_failure: false) }
-
-    # This convoluted mess is because we need to handle two cases of
-    # artifact files during the migration. And a simple OR clause
-    # makes it impossible to optimize.
-
-    # Instead we want to use UNION ALL and do two carefully
-    # constructed disjoint queries. But Rails cannot handle UNION or
-    # UNION ALL queries so we do the query in a subquery and wrap it
-    # in an otherwise redundant WHERE IN query (IN is fine for
-    # non-null columns).
-
-    # This should all be ripped out when the migration is finished and
-    # replaced with just the new storage to avoid the extra work.
-
     scope :with_artifacts, ->() do
-      old = Ci::Build.select(:id).where(%q[artifacts_file <> ''])
-      new = Ci::Build.select(:id).where(%q[(artifacts_file IS NULL OR artifacts_file = '') AND EXISTS (?)],
-                                        Ci::JobArtifact.select(1).where('ci_builds.id = ci_job_artifacts.job_id'))
-      where('ci_builds.id IN (? UNION ALL ?)', old, new)
+      where('(artifacts_file IS NOT NULL AND artifacts_file <> ?) OR EXISTS (?)',
+        '', Ci::JobArtifact.select(1).where('ci_builds.id = ci_job_artifacts.job_id'))
     end
-
-    scope :with_artifacts_not_expired, ->() do
-      old = Ci::Build.select(:id).where(%q[artifacts_file <> '' AND (artifacts_expire_at IS NULL OR artifacts_expire_at > ?)], Time.now)
-      new = Ci::Build.select(:id).where(%q[(artifacts_file IS NULL OR artifacts_file = '') AND EXISTS (?)],
-                                        Ci::JobArtifact.select(1).where('ci_builds.id = ci_job_artifacts.job_id AND (expire_at IS NULL OR expire_at > ?)', Time.now))
-      where('ci_builds.id IN (? UNION ALL ?)', old, new)
-    end
-
-    scope :with_expired_artifacts, ->() do
-      old = Ci::Build.select(:id).where(%q[artifacts_file <> '' AND artifacts_expire_at < ?], Time.now)
-      new = Ci::Build.select(:id).where(%q[(artifacts_file IS NULL OR artifacts_file = '') AND EXISTS (?)],
-                                        Ci::JobArtifact.select(1).where('ci_builds.id = ci_job_artifacts.job_id AND expire_at < ?', Time.now))
-      where('ci_builds.id IN (? UNION ALL ?)', old, new)
-    end
-
+    scope :with_artifacts_not_expired, ->() { with_artifacts.where('artifacts_expire_at IS NULL OR artifacts_expire_at > ?', Time.now) }
+    scope :with_expired_artifacts, ->() { with_artifacts.where('artifacts_expire_at < ?', Time.now) }
     scope :last_month, ->() { where('created_at > ?', Date.today - 1.month) }
     scope :manual_actions, ->() { where(when: :manual, status: COMPLETED_STATUSES + [:manual]) }
     scope :ref_protected, -> { where(protected: true) }
diff --git a/changelogs/unreleased/expired-ci-artifacts.yml b/changelogs/unreleased/expired-ci-artifacts.yml
deleted file mode 100644
index 2fcbdb02f84..00000000000
--- a/changelogs/unreleased/expired-ci-artifacts.yml
+++ /dev/null
@@ -1,5 +0,0 @@
----
-title: Change SQL for expired artifacts to use new ci_job_artifacts.expire_at
-merge_request: 16578
-author:
-type: performance
-- 
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