utilbelt

A grab bag of various useful functions for golang.

-- import "github.com/nullboundary/utilbelt"

Usage

func CalcHMAC

func CalcHMAC(message string, key []byte) []byte

CalcHMAC makes an HMAC of a message and key

func DebugPrintJson

func DebugPrintJson(Data interface{})

DebugPrintJson prints json data for debugging

func DecodeUriToBytes

func DecodeUriToBytes(str string, fileType string) (string, []byte)

DecodeUriToBytes decodes a data uri into bytes

func DecryptAESCFB

func DecryptAESCFB(key []byte, cryptoText string) string

DecryptAESCFB decrypts from base64 to decrypted string

func EncodetoDataUri

func EncodetoDataUri(fileName string, mimeType string, allowTypes ...string) (string, error)

EncodetoDataUri reads a file and generates a data uri

func EncryptAESCFB

func EncryptAESCFB(key []byte, text string) string

EncryptAESCFB encrypts string to base64 crypto using AES

func GenerateFnvHashID

func GenerateFnvHashID(hashSeeds ...string) uint32

GenerateFnvHashID generates a hash fnv1a hash. Fast, unique, but insecure! use only for ids and such. https://programmers.stackexchange.com/questions/49550/which-hashing-algorithm-is-best-for-uniqueness-and-speed

func GenerateToken

func GenerateToken(key []byte, seeds ...string) string

GenerateToken creates a urlEnocded hmac token

func GetEtcdKey

func GetEtcdKey(key string) (string, error)

GetEtcdKey retrives key/value pairs from etcd disrtibuted store

func HashSha1Bytes

func HashSha1Bytes(hashBytes []byte) []byte

HashSha1Bytes computes a Sha1 hash of byte data

func HashSha1Json

func HashSha1Json(jsonData interface{}) []byte

HashSha1Json computes a Sha1 hash of json data

func HeartBeatEtcd

func HeartBeatEtcd(key string, value string, ttl int)

HeartbeatEtcd sets key/value pairs to etcd disrtibuted store at an interval Used to renew a ttl set

func JsonErrorResponse

func JsonErrorResponse(res http.ResponseWriter, err error, status int)

JsonErrorResponse writes your error to response with a specific http status

func RandomStr

func RandomStr(n int) string

RandomStr generates a string of random letters and numbers with crypto/rand

func ReadJson

func ReadJson(req *http.Request, data interface{}) error

ReadJson read json from request and marshal the data

func SetEtcdKey

func SetEtcdKey(key string, value string, ttl int) error

SetEtcdKey sets key/value pairs to etcd disrtibuted store

func SetEtcdURL

func SetEtcdURL(etcdURL ...string) string

SetEtcdURL sets the url address and port of the etcd service from environment variables

func VerifyHMAC

func VerifyHMAC(message string, macOfMessage []byte, key []byte) bool

VerifyHMAC verifies a HMAC message

func VerifyToken

func VerifyToken(key []byte, authToken string, seeds ...string) (bool, error)

VerifyToken returns true if token has a valid HMAC.

func WriteJson

func WriteJson(res http.ResponseWriter, dataOut interface{}, pretty bool) error

WriteJson writes json to response with http.StatusOK

func WriteJsonStatus

func WriteJsonStatus(res http.ResponseWriter, status int, dataOut interface{}, pretty bool) error

WriteJsonStatus writes json to response and set specfic http status code

nullboundary / utilbelt