Present generic alert data

Reimplement generic alert related methods in
`AlertManagement::AlertPresenter`.

Makes generic alert independent from `Alerting::Alert`.

app/models/alert_management/alert.rb

@@ -26,6 +26,8 @@ module AlertManagement
       ignored: :ignore
     }.freeze
 
+    DETAILS_IGNORED_PARAMS = %w(start_time).freeze
+
     belongs_to :project
     belongs_to :issue, optional: true
 
@@ -137,7 +139,7 @@ module AlertManagement
     end
 
     def details
-      details_payload = payload.except(*attributes.keys)
+      details_payload = payload.except(*attributes.keys, *DETAILS_IGNORED_PARAMS)
 
       Gitlab::Utils::InlineHash.merge_keys(details_payload)
     end

app/presenters/alert_management/alert_presenter.rb

@@ -5,6 +5,8 @@ module AlertManagement
     include Gitlab::Utils::StrongMemoize
     include IncidentManagement::Settings
 
+    MARKDOWN_LINE_BREAK = "  \n".freeze
+
     def initialize(alert, _attributes = {})
       super
 
@@ -12,8 +14,6 @@ module AlertManagement
       @project = alert.project
     end
 
-    delegate :alert_markdown, :issue_summary_markdown, to: :alerting_alert
-
     def issue_description
       horizontal_line = "\n\n---\n\n"
 
@@ -24,22 +24,87 @@ module AlertManagement
       ].compact.join(horizontal_line)
     end
 
+    def start_time
+      started_at&.strftime('%d %B %Y, %-l:%M%p (%Z)')
+    end
+
+    def issue_summary_markdown
+      <<~MARKDOWN.chomp
+        #### Summary
+
+        #{metadata_list}
+        #{alert_details}#{metric_embed_for_alert}
+      MARKDOWN
+    end
+
     private
 
     attr_reader :alert, :project
 
-    def alert_payload
-      if alert.prometheus?
-        alert.payload
-      else
-        Gitlab::Alerting::NotificationPayloadParser.call(alert.payload.to_h)
+    def alerting_alert
+      strong_memoize(:alerting_alert) do
+        Gitlab::Alerting::Alert.new(project: project, payload: alert.payload).present
+      end
+    end
+
+    def alert_markdown
+      return unless alert.prometheus?
+
+      alerting_alert.alert_markdown
     end
+
+    def metadata_list
+      metadata = []
+
+      metadata << list_item('Start time', start_time)
+      metadata << list_item('Severity', severity)
+      metadata << list_item('full_query', backtick(full_query)) if full_query
+      metadata << list_item('Service', service) if service
+      metadata << list_item('Monitoring tool', monitoring_tool) if monitoring_tool
+      metadata << list_item('Hosts', host_links) if hosts.any?
+
+      metadata.join(MARKDOWN_LINE_BREAK)
     end
 
-    def alerting_alert
-      strong_memoize(:alertign_alert) do
-        Gitlab::Alerting::Alert.new(project: project, payload: alert_payload).present
+    def alert_details
+      if details.present?
+        <<~MARKDOWN.chomp
+
+          #### Alert Details
+
+          #{details_list}
+        MARKDOWN
+      end
+    end
+
+    def details_list
+      return alerting_alert.annotation_list if alert.prometheus?
+
+      alert.details
+        .map { |label, value| list_item(label, value) }
+        .join(MARKDOWN_LINE_BREAK)
+    end
+
+    def metric_embed_for_alert
+      return unless alert.prometheus?
+
+      alerting_alert.metric_embed_for_alert
+    end
+
+    def full_query
+      alert.prometheus? ? alerting_alert.full_query : nil
+    end
+
+    def list_item(key, value)
+      "**#{key}:** #{value}".strip
+    end
+
+    def backtick(value)
+      "`#{value}`"
     end
+
+    def host_links
+      hosts.join(' ')
     end
   end
 end

app/presenters/projects/prometheus/alert_presenter.rb

@@ -58,6 +58,21 @@ module Projects
         MARKDOWN
       end
 
+      def annotation_list
+        strong_memoize(:annotation_list) do
+          annotations
+            .reject { |annotation| annotation.label.in?(RESERVED_ANNOTATIONS | GENERIC_ALERT_SUMMARY_ANNOTATIONS) }
+            .map { |annotation| list_item(annotation.label, annotation.value) }
+            .join(MARKDOWN_LINE_BREAK)
+        end
+      end
+
+      def metric_embed_for_alert
+        url = embed_url_for_gitlab_alert || embed_url_for_self_managed_alert
+
+        "\n[](#{url})" if url
+      end
+
       private
 
       def alert_title
@@ -93,15 +108,6 @@ module Projects
         end
       end
 
-      def annotation_list
-        strong_memoize(:annotation_list) do
-          annotations
-            .reject { |annotation| annotation.label.in?(RESERVED_ANNOTATIONS | GENERIC_ALERT_SUMMARY_ANNOTATIONS) }
-            .map { |annotation| list_item(annotation.label, annotation.value) }
-            .join(MARKDOWN_LINE_BREAK)
-        end
-      end
-
       def list_item(key, value)
         "**#{key}:** #{value}".strip
       end
@@ -120,12 +126,6 @@ module Projects
         Array(hosts.value).join(' ')
       end
 
-      def metric_embed_for_alert
-        url = embed_url_for_gitlab_alert || embed_url_for_self_managed_alert
-
-        "\n[](#{url})" if url
-      end
-
       def embed_url_for_gitlab_alert
         return unless gitlab_alert
 

spec/presenters/alert_management/alert_presenter_spec.rb

@@ -12,13 +12,14 @@ RSpec.describe AlertManagement::AlertPresenter do
     }
   end
   let_it_be(:generic_alert) do
-    create(:alert_management_alert, project: project, payload: generic_payload)
+    create(:alert_management_alert, :with_host, :with_service, :with_monitoring_tool, project: project, payload: generic_payload)
   end
   let_it_be(:prometheus_payload) do
     {
       'annotations' => {
         'title' => 'Alert title',
-        'gitlab_incident_markdown' => '**`markdown example`**'
+        'gitlab_incident_markdown' => '**`markdown example`**',
+        'custom annotation' => 'custom annotation value'
       },
       'startsAt' => '2020-04-27T10:10:22.265949279Z',
       'generatorURL' => 'http://8d467bd4607a:9090/graph?g0.expr=vector%281%29&g0.tab=1'
@@ -28,27 +29,29 @@ RSpec.describe AlertManagement::AlertPresenter do
     create(:alert_management_alert, :prometheus, project: project, payload: prometheus_payload)
   end
   let(:alert) { generic_alert }
-  let(:presenter) { described_class.new(alert) }
+
+  subject(:presenter) { described_class.new(alert) }
 
   describe '#issue_description' do
     let(:markdown_line_break) { '  ' }
 
     context 'with generic alert' do
       let(:alert) { generic_alert }
-      let(:parsed_payload) { Gitlab::Alerting::NotificationPayloadParser.call(generic_payload.to_h) }
-      let(:alert_presenter) { Gitlab::Alerting::Alert.new(project: project, payload: parsed_payload).present }
 
       it 'returns an alert issue description' do
         expect(presenter.issue_description).to eq(
           <<~MARKDOWN.chomp
             #### Summary
 
-            **Start time:** #{alert_presenter.start_time}
+            **Start time:** #{presenter.start_time}#{markdown_line_break}
+            **Severity:** #{presenter.severity}#{markdown_line_break}
+            **Service:** #{alert.service}#{markdown_line_break}
+            **Monitoring tool:** #{alert.monitoring_tool}#{markdown_line_break}
+            **Hosts:** #{alert.hosts.join(' ')}
 
             #### Alert Details
 
-            **custom.param:** 73#{markdown_line_break}
-            **severity:** critical
+            **custom.param:** 73
           MARKDOWN
         )
       end
@@ -56,16 +59,20 @@ RSpec.describe AlertManagement::AlertPresenter do
 
     context 'with prometheus alert' do
       let(:alert) { prometheus_alert }
-      let(:alert_presenter) { Gitlab::Alerting::Alert.new(project: project, payload: prometheus_payload).present }
 
       it 'returns an alert issue description' do
         expect(presenter.issue_description).to eq(
           <<~MARKDOWN.chomp
             #### Summary
 
-            **Start time:** #{alert_presenter.start_time}#{markdown_line_break}
-            **full_query:** `vector(1)`
+            **Start time:** #{presenter.start_time}#{markdown_line_break}
+            **Severity:** #{presenter.severity}#{markdown_line_break}
+            **full_query:** `vector(1)`#{markdown_line_break}
+            **Monitoring tool:** Prometheus
+
+            #### Alert Details
 
+            **custom annotation:** custom annotation value
 
             ---
 

spec/services/alert_management/create_alert_issue_service_spec.rb

@@ -15,6 +15,7 @@ RSpec.describe AlertManagement::CreateAlertIssueService do
   let_it_be(:generic_alert, reload: true) { create(:alert_management_alert, :triggered, project: project, payload: payload) }
   let_it_be(:prometheus_alert, reload: true) { create(:alert_management_alert, :triggered, :prometheus, project: project, payload: payload) }
   let(:alert) { generic_alert }
+  let(:alert_presenter) { alert.present }
   let(:created_issue) { Issue.last! }
 
   describe '#execute' do
@@ -161,9 +162,6 @@ RSpec.describe AlertManagement::CreateAlertIssueService do
 
       context 'when the alert is prometheus alert' do
         let(:alert) { prometheus_alert }
-        let(:alert_presenter) do
-          Gitlab::Alerting::Alert.new(project: project, payload: alert.payload).present
-        end
 
         it_behaves_like 'creating an alert issue'
         it_behaves_like 'setting an issue attributes'
@@ -172,10 +170,6 @@ RSpec.describe AlertManagement::CreateAlertIssueService do
 
       context 'when the alert is generic' do
         let(:alert) { generic_alert }
-        let(:alert_presenter) do
-          alert_payload = Gitlab::Alerting::NotificationPayloadParser.call(alert.payload.to_h)
-          Gitlab::Alerting::Alert.new(project: project, payload: alert_payload).present
-        end
 
         it_behaves_like 'creating an alert issue'
         it_behaves_like 'setting an issue attributes'