valuemodifier

valuemodifier

Package valuemodifier provides an interface to modify values of arbitrary structures in custom ways. Currently JSON and YAML formats are supported.

usage

This is an working example of how to use this package. For more examples check the go tests.

package main

import (
	"fmt"

	"github.com/giantswarm/valuemodifier"
	encodemodifier "github.com/giantswarm/valuemodifier/base64/encode"
	encryptmodifier "github.com/giantswarm/valuemodifier/gpg/encrypt"
)

func main() {
	var err error

	var encodeModifier valuemodifier.ValueModifier
	{
		modifierConfig := encodemodifier.DefaultConfig()
		encodeModifier, err = encodemodifier.New(modifierConfig)
		if err != nil {
			// error handling
		}
	}

	var encryptModifier valuemodifier.ValueModifier
	{
		modifierConfig := encryptmodifier.DefaultConfig()
		modifierConfig.Pass = "somesecretpassphrase"
		encryptModifier, err = encryptmodifier.New(modifierConfig)
		if err != nil {
			// error handling
		}
	}

	var newTraverser *valuemodifier.Service
	{
		config := valuemodifier.DefaultConfig()
		config.ValueModifiers = []valuemodifier.ValueModifier{encryptModifier, encodeModifier}
		newTraverser, err = valuemodifier.New(config)
		if err != nil {
			// error handling
		}
	}

	decrypted, err := newTraverser.TraverseJSON([]byte(`{"key":"val"}`))
	if err != nil {
		// error handling
	}

	// Variable decrypted holds the string "val" in GPG encrypted and base64 encoded
	// form.
	//
	//     {
	//       "key": "LS0tLS1CRUdJTiBQR1AgU0lHTkFUVVJFLS0tLS0KCnd4NEVCd01JdWk3S1BHcmRWK0JnU0U1RFJMVVY1L3l0UXp2dWwwUHhXS2JTNEFIa3Znc2ZreFJSZFZuUzdLVG4KTVkvZnJ1RXlCZURwNEp2aC90cmdBZUp6dDZGWjRQTGhZQ2JneXVCdTRKVGsrcWVzNm96dCtvUVJCRDcvTXNpSQpBZUxEeWk5bjRWYUdBQT09Cj14YTQ5Ci0tLS0tRU5EIFBHUCBTSUdOQVRVUkUtLS0tLQ=="
	//     }
	//
	fmt.Printf("%s\n", decrypted)
}