Handle exclusions specified in the ExcludedFeatureKeys table (#1271)

* Handle exclusions specified in the ExcludedFeatureKeys table

* lint

* Update lib/gcpspanner/missing_one_implementation_feature_list_test.go

Co-authored-by: James C Scott III <jcscottiii@users.noreply.github.com>

---------

Co-authored-by: James C Scott III <jcscottiii@users.noreply.github.com>

Author: KyleJu

lib/gcpspanner/missing_one_implementation_feature_list.go

@@ -86,6 +86,7 @@ EXISTS (
 AND
 {{ end }}
 1=1
+{{ .ExcludedFeatureFilter }}
 ORDER BY KEY ASC
 LIMIT @limit
 {{ if .Offset }}
@@ -96,6 +97,7 @@ OFFSET {{ .Offset }}
 type missingOneImplFeatureListTemplateData struct {
 	OtherBrowsersParamNames []string
 	Offset                  int
+	ExcludedFeatureFilter   string
 }
 
 func buildMissingOneImplFeatureListTemplate(
@@ -104,6 +106,7 @@ func buildMissingOneImplFeatureListTemplate(
 	targetDate time.Time,
 	cursor *missingOneImplFeatureListCursor,
 	pageSize int,
+	excludedFeatureIDs []string,
 ) spanner.Statement {
 	params := map[string]interface{}{}
 	allBrowsers := make([]string, len(otherBrowsers)+1)
@@ -117,12 +120,19 @@ func buildMissingOneImplFeatureListTemplate(
 		otherBrowsersParamNames = append(otherBrowsersParamNames, paramName)
 	}
 
+	var excludedFeatureFilter string
+	if len(excludedFeatureIDs) > 0 {
+		params["excludedFeatureIDs"] = excludedFeatureIDs
+		excludedFeatureFilter = "AND wf.ID NOT IN UNNEST(@excludedFeatureIDs)"
+	}
+
 	params["targetDate"] = targetDate
 	params["limit"] = pageSize
 
 	tmplData := missingOneImplFeatureListTemplateData{
 		OtherBrowsersParamNames: otherBrowsersParamNames,
 		Offset:                  cursor.Offset,
+		ExcludedFeatureFilter:   excludedFeatureFilter,
 	}
 
 	sql := missingOneImplFeatureListTemplate.Execute(tmplData)
@@ -152,12 +162,19 @@ func (c *Client) MissingOneImplFeatureList(
 	txn := c.ReadOnlyTransaction()
 	defer txn.Close()
 
+	// Get ignored feature IDs
+	ignoredFeatureIDs, err := c.getIgnoredFeatureIDsForStats(ctx, txn)
+	if err != nil {
+		return nil, err
+	}
+
 	stmt := buildMissingOneImplFeatureListTemplate(
 		targetBrowser,
 		otherBrowsers,
 		targetDate,
 		cursor,
 		pageSize,
+		ignoredFeatureIDs,
 	)
 
 	it := txn.Query(ctx, stmt)

lib/gcpspanner/missing_one_implementation_feature_list_test.go

@@ -154,7 +154,7 @@ func testMissingOneImplFeatureListSuite(
 	ctx context.Context,
 	t *testing.T,
 ) {
-	t.Run("bazBrowser", func(t *testing.T) {
+	t.Run("Query bazBrowser without exclusions", func(t *testing.T) {
 		const targetBrowser = "bazBrowser"
 		otherBrowsers := []string{
 			"fooBrowser",
@@ -330,6 +330,75 @@ func testMissingOneImplFeatureListSuite(
 		})
 
 	})
+
+	t.Run("with excluded/discouraged features", func(t *testing.T) {
+		// Exclude Feature X
+		excludedFeatures := []string{"FeatureX"}
+		for _, featureKey := range excludedFeatures {
+			err := spannerClient.InsertExcludedFeatureKey(ctx, featureKey)
+			if err != nil {
+				t.Fatalf("Failed to insert excluded feature key: %v", err)
+			}
+		}
+
+		// Discourage FeatureZ
+		discouragedFeatures := []string{"FeatureZ"}
+		for _, featureKey := range discouragedFeatures {
+			err := spannerClient.UpsertFeatureDiscouragedDetails(ctx, featureKey, FeatureDiscouragedDetails{
+				AccordingTo:  nil,
+				Alternatives: nil,
+			})
+			if err != nil {
+				t.Fatalf("Failed to upsert feature discouraged details: %v", err)
+			}
+		}
+
+		// nolint:goconst // WONTFIX
+		t.Run("simple query", func(t *testing.T) {
+			targetBrowser := "bazBrowser"
+			otherBrowsers := []string{"fooBrowser", "barBrowser"}
+			targetDate := time.Date(2024, 4, 15, 0, 0, 0, 0, time.UTC)
+			pageSize := 25
+			token := encodeMissingOneImplFeatureListCursor(0)
+
+			expectedResult := &MissingOneImplFeatureListPage{
+				NextPageToken: nil,
+				FeatureList: []MissingOneImplFeature{
+					// fooBrowser 113 release
+					// Currently supported features:
+					// fooBrowser: FeatureX, FeatureZ, FeatureY, FeatureW
+					// barBrowser: FeatureX, FeatureZ, FeatureY, FeatureW
+					// bazBrowser: FeatureX, FeatureY
+					// Missing in on for bazBrowser: FeatureW (FeatureZ is excluded/discouraged)
+					{
+						WebFeatureID: "FeatureW",
+					},
+				},
+			}
+			// Assert with excluded/discouraged features
+			assertMissingOneImplFeatureList(
+				ctx,
+				t,
+				targetDate,
+				targetBrowser,
+				otherBrowsers,
+				expectedResult,
+				&token,
+				pageSize,
+			)
+		})
+
+		// Clear the excluded and discouraged features after the test
+		err := spannerClient.ClearExcludedFeatureKeys(ctx)
+		if err != nil {
+			t.Fatalf("Failed to clear excluded feature keys: %v", err)
+		}
+
+		err = spannerClient.ClearFeatureDiscouragedDetails(ctx)
+		if err != nil {
+			t.Fatalf("Failed to clear feature discouraged details: %v", err)
+		}
+	})
 }
 
 func TestListMissingOneImplFeatureList(t *testing.T) {