Cleanup stale builds metric

* Update metric name to match new convention.
* Remove unecessary labels.
* Update specs.

lib/gitlab_monitor/database/ci_builds.rb

@@ -19,7 +19,7 @@ module GitLab
           "    ci_builds.status, " \
           "    projects.shared_runners_enabled".freeze
 
-        NOT_UPDATED_RUNNING_BUILDS_QUERY =
+        STALE_BUILDS_QUERY =
           "SELECT " \
           "  COUNT(*) AS count " \
           "  FROM ci_builds " \
@@ -54,7 +54,7 @@ module GitLab
 
           results.merge!(get_builds(BUILDS_QUERY))
 
-          results[:not_updated_last_hour] = get_general(NOT_UPDATED_RUNNING_BUILDS_QUERY)
+          results[:stale_builds] = get_general(STALE_BUILDS_QUERY)
           results[:per_runner] = get_per_runner(PER_RUNNER_QUERY)
           results
         end
@@ -152,7 +152,7 @@ module GitLab
         end
 
         def ci_stale_builds_metrics
-          @metrics.add("ci_builds_stale", @results[:not_updated_last_hour], status: "running", when: "last_hour")
+          @metrics.add("ci_stale_builds", @results[:stale_builds])
         end
 
         def metrics_per_runner

spec/database/ci_builds_spec.rb

@@ -4,14 +4,13 @@ require "gitlab_monitor/database/ci_builds"
 # rubocop:disable Metrics/LineLength
 describe GitLab::Monitor::Database do
   let(:builds_query) { "SELECT BUILDS" }
-  let(:not_updated_running_builds_query) { "SELECT NOT UPDATED RUNNING" }
+  let(:stale_builds_query) { "SELECT NOT UPDATED RUNNING" }
   let(:per_runner_query) { "SELECT ALL RUNNING PER RUNNER" }
   let(:connection) { double("connection") }
 
   before do
     stub_const("GitLab::Monitor::Database::CiBuildsCollector::BUILDS_QUERY", builds_query)
-    stub_const("GitLab::Monitor::Database::CiBuildsCollector::NOT_UPDATED_RUNNING_BUILDS_QUERY",
-               not_updated_running_builds_query)
+    stub_const("GitLab::Monitor::Database::CiBuildsCollector::STALE_BUILDS_QUERY", stale_builds_query)
     stub_const("GitLab::Monitor::Database::CiBuildsCollector::PER_RUNNER_QUERY", per_runner_query)
 
     allow_any_instance_of(GitLab::Monitor::Database::CiBuildsCollector).to receive(:connection).and_return(connection)
@@ -23,7 +22,7 @@ describe GitLab::Monitor::Database do
                    { "shared_runners_enabled" => "t", "status" => "pending", "namespace_id" => "2", "count" => 50 },
                    { "shared_runners_enabled" => "t", "status" => "pending", "namespace_id" => "3", "count" => 1 },
                    { "shared_runners_enabled" => "t", "status" => "pending", "namespace_id" => "4", "count" => 2 }])
-    allow(connection).to receive(:exec).with(not_updated_running_builds_query).and_return([{ "count" => 2 }])
+    allow(connection).to receive(:exec).with(stale_builds_query).and_return([{ "count" => 2 }])
     allow(connection).to receive(:exec).with(per_runner_query)
       .and_return([{ "runner_id" => 1,
                      "is_shared" => "t",
@@ -57,7 +56,7 @@ describe GitLab::Monitor::Database do
                                     { namespace: "1", shared_runners: "no", value: 10 },
                                     { namespace: "2", shared_runners: "no", value: 20 }
                                   ],
-                                  not_updated_last_hour: 2)
+                                  stale_builds: 2)
     end
   end
 
@@ -84,7 +83,7 @@ describe GitLab::Monitor::Database do
       expect(writer.string).to match(/ci_pending_builds{namespace="",shared_runners="no"} 0/)
       expect(writer.string).to match(/ci_created_builds{namespace="",shared_runners="yes"} 0/)
       expect(writer.string).to match(/ci_created_builds{namespace="",shared_runners="no"} 0/)
-      expect(writer.string).to match(/ci_builds_stale{status="running",when="last_hour"} 2/)
+      expect(writer.string).to match(/ci_stale_builds 2/)
       expect(writer.string).to match(/ci_running_builds{runner="1",shared_runner="yes",mirror="no",pending_delete="no",mirror_trigger_builds="no"} 15/)
       expect(writer.string).to match(/ci_running_builds{runner="2",shared_runner="no",mirror="yes",pending_delete="no",mirror_trigger_builds="yes"} 5/)
     end