Change payload format for DORA metrics

This commit changes the payload format on the DORA metrics.

changelogs/unreleased/change-payload-format-for-dora-metrics.yml

+---
+title: Improve payload format of DORA metrics API
+merge_request: 57314
+author:
+type: added

doc/api/dora/metrics.md

@@ -38,14 +38,14 @@ Example response:
 
 ```json
 [
-  { "2021-03-01": 3 },
-  { "2021-03-02": 6 },
-  { "2021-03-03": 0 },
-  { "2021-03-04": 0 },
-  { "2021-03-05": 0 },
-  { "2021-03-06": 0 },
-  { "2021-03-07": 0 },
-  { "2021-03-08": 4 }
+  { "2021-03-01": 3, "date": "2021-03-01", "value": 3 },
+  { "2021-03-02": 6, "date": "2021-03-02", "value": 6 },
+  { "2021-03-03": 0, "date": "2021-03-03", "value": 0 },
+  { "2021-03-04": 0, "date": "2021-03-04", "value": 0 },
+  { "2021-03-05": 0, "date": "2021-03-05", "value": 0 },
+  { "2021-03-06": 0, "date": "2021-03-06", "value": 0 },
+  { "2021-03-07": 0, "date": "2021-03-07", "value": 0 },
+  { "2021-03-08": 4, "date": "2021-03-08", "value": 4 }
 ]
 ```
 
@@ -78,13 +78,13 @@ Example response:
 
 ```json
 [
-  { "2021-03-01": 3 },
-  { "2021-03-02": 6 },
-  { "2021-03-03": 0 },
-  { "2021-03-04": 0 },
-  { "2021-03-05": 0 },
-  { "2021-03-06": 0 },
-  { "2021-03-07": 0 },
-  { "2021-03-08": 4 }
+  { "2021-03-01": 3, "date": "2021-03-01", "value": 3 },
+  { "2021-03-02": 6, "date": "2021-03-02", "value": 6 },
+  { "2021-03-03": 0, "date": "2021-03-03", "value": 0 },
+  { "2021-03-04": 0, "date": "2021-03-04", "value": 0 },
+  { "2021-03-05": 0, "date": "2021-03-05", "value": 0 },
+  { "2021-03-06": 0, "date": "2021-03-06", "value": 0 },
+  { "2021-03-07": 0, "date": "2021-03-07", "value": 0 },
+  { "2021-03-08": 4, "date": "2021-03-08", "value": 4 }
 ]
 ```

ee/app/models/dora/daily_metrics.rb

@@ -57,6 +57,8 @@ module Dora
       def aggregate_for!(metric, interval)
         data_query = data_query_for!(metric)
 
+        # NOTE: We would remove the `{ date => value }` entry in 14.0 in favor of the explicit `date` and `value` keys.
+        # See more https://gitlab.com/gitlab-org/gitlab/-/issues/325931
         case interval
         when INTERVAL_ALL
           select(data_query).take.data
@@ -64,12 +66,12 @@ module Dora
           select("DATE_TRUNC('month', date)::date AS month, #{data_query}")
             .group("DATE_TRUNC('month', date)")
             .order('month ASC')
-            .map { |row| { row.month.to_s => row.data } }
+            .map { |row| { row.month.to_s => row.data, 'date' => row.month.to_s, 'value' => row.data } }
         when INTERVAL_DAILY
           select("date, #{data_query}")
             .group('date')
             .order('date ASC')
-            .map { |row| { row.date.to_s => row.data } }
+            .map { |row| { row.date.to_s => row.data, 'date' => row.date.to_s, 'value' => row.data } }
         else
           raise ArgumentError, 'Unknown interval'
         end

ee/spec/models/dora/daily_metrics_spec.rb

@@ -192,7 +192,7 @@ RSpec.describe Dora::DailyMetrics, type: :model do
         let(:interval) { described_class::INTERVAL_MONTHLY }
 
         it 'aggregates the rows' do
-          is_expected.to eq([{ '2021-01-01' => 12 }])
+          is_expected.to eq([{ '2021-01-01' => 12, 'date' => '2021-01-01', 'value' => 12 }])
         end
       end
 
@@ -200,10 +200,10 @@ RSpec.describe Dora::DailyMetrics, type: :model do
         let(:interval) { described_class::INTERVAL_DAILY }
 
         it 'aggregates the rows' do
-          is_expected.to eq([{ '2021-01-01' => 6 },
-                             { '2021-01-02' => 4 },
-                             { '2021-01-03' => 2 },
-                             { '2021-01-04' => nil }])
+          is_expected.to eq([{ '2021-01-01' => 6, 'date' => '2021-01-01', 'value' => 6 },
+                             { '2021-01-02' => 4, 'date' => '2021-01-02', 'value' => 4 },
+                             { '2021-01-03' => 2, 'date' => '2021-01-03', 'value' => 2 },
+                             { '2021-01-04' => nil, 'date' => '2021-01-04', 'value' => nil }])
         end
       end
 
@@ -239,7 +239,7 @@ RSpec.describe Dora::DailyMetrics, type: :model do
         let(:interval) { described_class::INTERVAL_MONTHLY }
 
         it 'calculates the median' do
-          is_expected.to eq([{ '2021-01-01' => 75 }])
+          is_expected.to eq([{ '2021-01-01' => 75, 'date' => '2021-01-01', 'value' => 75 }])
         end
       end
 
@@ -247,10 +247,10 @@ RSpec.describe Dora::DailyMetrics, type: :model do
         let(:interval) { described_class::INTERVAL_DAILY }
 
         it 'calculates the median' do
-          is_expected.to eq([{ '2021-01-01' => 95 },
-                             { '2021-01-02' => 75 },
-                             { '2021-01-03' => 55 },
-                             { '2021-01-04' => nil }])
+          is_expected.to eq([{ '2021-01-01' => 95, 'date' => '2021-01-01', 'value' => 95 },
+                             { '2021-01-02' => 75, 'date' => '2021-01-02', 'value' => 75 },
+                             { '2021-01-03' => 55, 'date' => '2021-01-03', 'value' => 55 },
+                             { '2021-01-04' => nil, 'date' => '2021-01-04', 'value' => nil }])
         end
       end
 

ee/spec/requests/api/dora/metrics_spec.rb

@@ -35,8 +35,8 @@ RSpec.describe API::Dora::Metrics do
       subject
 
       expect(response).to have_gitlab_http_status(:ok)
-      expect(json_response).to eq([{ '2021-01-01' => 1 },
-                                   { '2021-01-02' => 2 }])
+      expect(json_response).to eq([{ '2021-01-01' => 1, 'date' => '2021-01-01', 'value' => 1 },
+                                   { '2021-01-02' => 2, 'date' => '2021-01-02', 'value' => 2 }])
     end
 
     context 'when user is guest' do
@@ -84,8 +84,8 @@ RSpec.describe API::Dora::Metrics do
       subject
 
       expect(response).to have_gitlab_http_status(:ok)
-      expect(json_response).to eq([{ 1.day.ago.to_date.to_s => 1 },
-                                   { Time.current.to_date.to_s => 2 }])
+      expect(json_response).to eq([{ 1.day.ago.to_date.to_s => 1, 'date' => 1.day.ago.to_date.to_s, 'value' => 1 },
+                                   { Time.current.to_date.to_s => 2, 'date' => Time.current.to_date.to_s, 'value' => 2 }])
     end
 
     context 'when user is guest' do

ee/spec/services/dora/aggregate_metrics_service_spec.rb

@@ -114,7 +114,7 @@ RSpec.describe Dora::AggregateMetricsService do
 
       it 'returns the aggregated data' do
         expect(subject[:status]).to eq(:success)
-        expect(subject[:data]).to eq([{ Time.current.to_date.to_s => 2 }])
+        expect(subject[:data]).to eq([{ Time.current.to_date.to_s => 2, 'date' => Time.current.to_date.to_s, 'value' => 2 }])
       end
 
       context 'when interval is monthly' do
@@ -122,7 +122,7 @@ RSpec.describe Dora::AggregateMetricsService do
 
         it 'returns the aggregated data' do
           expect(subject[:status]).to eq(:success)
-          expect(subject[:data]).to eq([{ Time.current.beginning_of_month.to_date.to_s => 2 }])
+          expect(subject[:data]).to eq([{ Time.current.beginning_of_month.to_date.to_s => 2, 'date' => Time.current.beginning_of_month.to_date.to_s, 'value' => 2 }])
         end
       end
 
@@ -140,7 +140,7 @@ RSpec.describe Dora::AggregateMetricsService do
 
         it 'returns the aggregated data' do
           expect(subject[:status]).to eq(:success)
-          expect(subject[:data]).to eq([{ Time.current.to_date.to_s => 1 }])
+          expect(subject[:data]).to eq([{ Time.current.to_date.to_s => 1, 'date' => Time.current.to_date.to_s, 'value' => 1 }])
         end
       end
     end
@@ -174,7 +174,7 @@ RSpec.describe Dora::AggregateMetricsService do
 
       it 'returns the aggregated data' do
         expect(subject[:status]).to eq(:success)
-        expect(subject[:data]).to eq([{ Time.current.to_date.to_s => 3 }])
+        expect(subject[:data]).to eq([{ Time.current.to_date.to_s => 3, 'date' => Time.current.to_date.to_s, 'value' => 3 }])
       end
 
       context 'when interval is monthly' do
@@ -182,7 +182,7 @@ RSpec.describe Dora::AggregateMetricsService do
 
         it 'returns the aggregated data' do
           expect(subject[:status]).to eq(:success)
-          expect(subject[:data]).to eq([{ Time.current.beginning_of_month.to_date.to_s => 3 }])
+          expect(subject[:data]).to eq([{ Time.current.beginning_of_month.to_date.to_s => 3, 'date' => Time.current.beginning_of_month.to_date.to_s, 'value' => 3 }])
         end
       end