Add AllValue to the Grafana variables

observability-lib/grafana/builder_test.go

@@ -154,6 +154,37 @@ func TestBuilder_AddVars(t *testing.T) {
 		}
 		require.Len(t, o.Dashboard.Templating.List, 1)
 	})
+
+	t.Run("AddVars adds variables with AllValue to the dashboard", func(t *testing.T) {
+		builder := grafana.NewBuilder(&grafana.BuilderOptions{
+			Name: "Dashboard Name",
+		})
+
+		variable := grafana.NewQueryVariable(&grafana.QueryVariableOptions{
+			VariableOption: &grafana.VariableOption{
+				Name:  "Variable Name",
+				Label: "Variable Label",
+			},
+			Query:      "query",
+			Datasource: grafana.NewDataSource("Prometheus", "").Name,
+			IncludeAll: true,
+			AllValue:   ".*",
+		})
+
+		builder.AddVars(variable)
+		o, err := builder.Build()
+		if err != nil {
+			t.Errorf("Error building dashboard: %v", err)
+		}
+		require.Len(t, o.Dashboard.Templating.List, 1)
+
+		// Verify the AllValue is set correctly
+		varModel := o.Dashboard.Templating.List[0]
+		require.NotNil(t, varModel.AllValue)
+		require.Equal(t, ".*", *varModel.AllValue)
+		require.NotNil(t, varModel.IncludeAll)
+		require.True(t, *varModel.IncludeAll)
+	})
 }
 
 func TestBuilder_AddRow(t *testing.T) {

observability-lib/grafana/variables.go

@@ -87,6 +87,7 @@ type QueryVariableOptions struct {
 	Sort          dashboard.VariableSort
 	Refresh       *dashboard.VariableRefresh
 	IncludeAll    bool
+	AllValue      string
 	QueryWithType map[string]any
 }
 
@@ -112,7 +113,8 @@ func NewQueryVariable(options *QueryVariableOptions) *dashboard.QueryVariableBui
 		Sort(options.Sort).
 		Refresh(*options.Refresh).
 		Multi(options.Multi).
-		IncludeAll(options.IncludeAll)
+		IncludeAll(options.IncludeAll).
+		AllValue(options.AllValue)
 
 	if options.Query != "" {
 		variable.Query(dashboard.StringOrMap{String: cog.ToPtr[string](options.Query)})