feat: add support for --set-json

This flag allows you to set any arbitrary JSON content within Values

pkg/flags/setjson.go

@@ -0,0 +1,56 @@
+//  Copyright 2024 Google LLC
+//
+//  Licensed under the Apache License, Version 2.0 (the "License");
+//  you may not use this file except in compliance with the License.
+//  You may obtain a copy of the License at
+//
+//       http://www.apache.org/licenses/LICENSE-2.0
+//
+//  Unless required by applicable law or agreed to in writing, software
+//  distributed under the License is distributed on an "AS IS" BASIS,
+//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//  See the License for the specific language governing permissions and
+//  limitations under the License.
+
+package flags
+
+import (
+	"encoding/json"
+	"fmt"
+	"github.com/go-errors/errors"
+	"github.com/micovery/apigee-yaml-toolkit/pkg/values"
+	"strings"
+)
+
+type SetJSON struct {
+	Data *values.Map
+}
+
+func NewSetJSON(data *values.Map) SetJSON {
+	return SetJSON{Data: data}
+}
+
+func (v *SetJSON) String() string {
+	return fmt.Sprintf("%v", v.Data)
+}
+
+func (v *SetJSON) Set(entry string) error {
+	key, jsonText, found := strings.Cut(entry, "=")
+	if !found {
+		return errors.Errorf("missing JSON text in set-json for key=%s", key)
+	}
+
+	wrappedJSONText := fmt.Sprintf(`{"JSON":%s}`, jsonText)
+	type Wrapper struct {
+		JSON any `yaml:"Data"`
+	}
+
+	wrapper := Wrapper{JSON: nil}
+	err := json.Unmarshal([]byte(wrappedJSONText), &wrapper)
+	if err != nil {
+		return errors.New(err)
+	}
+
+	v.Data.Set(key, wrapper.JSON)
+	return nil
+}

pkg/render/render.go

@@ -363,6 +363,7 @@ func GetRenderFlags(printVersion func(), printUsage func()) (*Flags, error) {
 	setOAS := flags.NewSetOAS(rFlags.Values)
 	setGraphQL := flags.NewSetGraphQL(rFlags.Values)
 	setGRPC := flags.NewSetGRPC(rFlags.Values)
+	setJSON := flags.NewSetJSON(rFlags.Values)
 
 	flag.BoolVar(&rFlags.Version, "version", false, "(optional) prints version text")
 	flag.BoolVar(&rFlags.Help, "help", false, `(optional) prints additional help text`)
@@ -377,6 +378,7 @@ func GetRenderFlags(printVersion func(), printUsage func()) (*Flags, error) {
 	flag.Var(&setOAS, "set-oas", "(optional,0..*) sets context key/value where value is an OpenAPI spec of a file e.g. \"my_oas=petstore.yaml\"")
 	flag.Var(&setGRPC, "set-grpc", "(optional,0..*) sets context key/value where value is a gRPC proto of a file e.g. \"my_proto=greeter.proto\"")
 	flag.Var(&setGraphQL, "set-graphql", "(optional,0..*) sets context key/value where value is a GraphQL schema of a file e.g. \"my_schema=resorts.graphql\"")
+	flag.Var(&setJSON, "set-json", "(optional,0..*) sets context key/value where value is JSON  e.g. 'servers=[\"server1\",\"server2\"]'")
 
 	flag.Parse()