Merge remote-tracking branch 'upstream/master' into 27377-preload-pipeline-entity27377-preload-pipeline-entity

* upstream/master: (2534 commits)
  Update VERSION to 9.3.0-pre
  Update CHANGELOG.md for 9.2.0
  removes unnecessary redundacy in usage ping doc
  Respect the typo as rubocop said
  Add a test to ensure this works on MySQL
  Change pipelines schedules help page path
  change domain to hostname in usage ping doc
  Fixes broken MySQL migration for retried
  Show password field mask while editing service settings
  Add notes for supported schedulers and cloud providers
  Move environment monitoring to environments doc
  Add docs for change of Cache/Artifact restore order"
  Avoid resource intensive login checks if password is not provided
  Change translation for 'coding' by 'desarrollo' for Spanish
  Add to docs: issues multiple assignees
  rename "Add emoji" and "Award emoji" to "Add reaction" where appropriate
  Add project and group notification settings info
  32570 Fix border-bottom for project activity tab
  Add users endpoint to frontend API class
  Rename users on mysql
  ...

1 files changed, 67 insertions, 15 deletions

diff --git a/app/views/projects/environments/metrics.html.haml b/app/views/projects/environments/metrics.html.haml
index 3b45162df52..e8f8fbbcf09 100644
--- a/app/views/projects/environments/metrics.html.haml
+++ b/app/views/projects/environments/metrics.html.haml
@@ -5,24 +5,76 @@
   = page_specific_javascript_bundle_tag('monitoring')
 = render "projects/pipelines/head"
 
-%div{ class: container_class }
+#js-metrics.prometheus-container{ class: container_class, data: { has_metrics: "#{@environment.has_metrics?}", deployment_endpoint: namespace_project_environment_deployments_path(@project.namespace, @project, @environment, format: :json) } }
   .top-area
     .row
       .col-sm-6
         %h3.page-title
           Environment:
-          = @environment.name
+          = link_to @environment.name, environment_path(@environment)
 
-      .col-sm-6
-        .nav-controls
-          = render 'projects/deployments/actions', deployment: @environment.last_deployment
-  .row
-    .col-sm-12
-      %h4
-        CPU utilization
-      %svg.prometheus-graph{ 'graph-type' => 'cpu_values' }
-  .row
-    .col-sm-12
-      %h4
-        Memory usage
-      %svg.prometheus-graph{ 'graph-type' => 'memory_values' }
+  .prometheus-state
+    .js-getting-started.hidden
+      .row
+        .col-md-4.col-md-offset-4.state-svg
+          = render "shared/empty_states/monitoring/getting_started.svg"
+      .row
+        .col-md-6.col-md-offset-3
+          %h4.text-center.state-title
+            Get started with performance monitoring
+      .row
+        .col-md-6.col-md-offset-3
+          .description-text.text-center.state-description
+            Stay updated about the performance and health of your environment by configuring Prometheus to monitor your deployments.
+            = link_to help_page_path('administration/monitoring/prometheus/index.md') do
+              Learn more about performance monitoring
+      .row.state-button-section
+        .col-md-4.col-md-offset-4.text-center.state-button
+          = link_to edit_namespace_project_service_path(@project.namespace, @project, 'prometheus'), class: 'btn btn-success' do
+            Configure Prometheus
+    .js-loading.hidden
+      .row
+        .col-md-4.col-md-offset-4.state-svg
+          = render "shared/empty_states/monitoring/loading.svg"
+      .row
+        .col-md-6.col-md-offset-3
+          %h4.text-center.state-title
+            Waiting for performance data
+      .row
+        .col-md-6.col-md-offset-3
+          .description-text.text-center.state-description
+            Creating graphs uses the data from the Prometheus server. If this takes a long time, ensure that data is available.
+      .row.state-button-section
+        .col-md-4.col-md-offset-4.text-center.state-button
+          = link_to help_page_path('administration/monitoring/prometheus/index.md'), class: 'btn btn-success' do
+            View documentation
+    .js-unable-to-connect.hidden
+      .row
+        .col-md-4.col-md-offset-4.state-svg
+          = render "shared/empty_states/monitoring/unable_to_connect.svg"
+      .row
+        .col-md-6.col-md-offset-3
+          %h4.text-center.state-title
+            Unable to connect to Prometheus server
+      .row
+        .col-md-6.col-md-offset-3
+          .description-text.text-center.state-description
+            Ensure connectivity is available from the GitLab server to the
+            = link_to edit_namespace_project_service_path(@project.namespace, @project, 'prometheus') do
+              Prometheus server
+      .row.state-button-section
+        .col-md-4.col-md-offset-4.text-center.state-button
+          = link_to help_page_path('administration/monitoring/prometheus/index.md'), class:'btn btn-success' do
+            View documentation
+
+  .prometheus-graphs
+    .row
+      .col-sm-12
+        %h4
+          CPU utilization
+        %svg.prometheus-graph{ 'graph-type' => 'cpu_values' }
+    .row
+      .col-sm-12
+        %h4
+          Memory usage
+        %svg.prometheus-graph{ 'graph-type' => 'memory_values' }