Merge pull request #121 from gympass/fix-oac-short-name

Fix oac short name

Author: caiofralmeida

go.mod

@@ -6,7 +6,6 @@ require (
 	github.com/aws/aws-sdk-go v1.44.271
 	github.com/creasty/defaults v1.7.0
 	github.com/go-logr/logr v1.2.4
-	github.com/google/uuid v1.6.0
 	github.com/hashicorp/go-multierror v1.1.1
 	github.com/joho/godotenv v1.5.1
 	github.com/spf13/viper v1.15.0
@@ -38,6 +37,7 @@ require (
 	github.com/google/gnostic v0.5.7-v3refs // indirect
 	github.com/google/go-cmp v0.5.9 // indirect
 	github.com/google/gofuzz v1.1.0 // indirect
+	github.com/google/uuid v1.6.0 // indirect
 	github.com/hashicorp/errwrap v1.0.0 // indirect
 	github.com/hashicorp/hcl v1.0.0 // indirect
 	github.com/imdario/mergo v0.3.12 // indirect

internal/cloudfront/oac.go

@@ -20,11 +20,11 @@
 package cloudfront
 
 import (
+	"crypto/md5"
 	"fmt"
 	"strings"
 
 	awscloudfront "github.com/aws/aws-sdk-go/service/cloudfront"
-	"github.com/google/uuid"
 )
 
 const (
@@ -62,14 +62,19 @@ func oacName(distributionName, s3Host string) string {
 
 	// generates a short name to avoid AWS limits.
 	hostName := strings.Split(distributionName, ".")[0]
-	return fmt.Sprintf("%s-%s", hostName, generateShortID())
+	return fmt.Sprintf("%s-%s", hostName, generateShortID(distributionName, s3Name))
 }
 
 func oacDescription(originName string) string {
 	return fmt.Sprintf("OAC for %s, managed by cdn-origin-controller", originName)
 }
 
-func generateShortID() string {
-	id := uuid.New().String()
-	return strings.Split(id, "-")[0]
+func generateShortID(distrName, domainName string) string {
+	md5 := generateMD5(fmt.Sprintf("%s-%s", distrName, domainName))
+	return md5[:8]
+}
+
+func generateMD5(text string) string {
+	data := []byte(text)
+	return fmt.Sprintf("%x", md5.Sum(data))
 }

internal/cloudfront/oac_test.go

@@ -20,7 +20,6 @@
 package cloudfront
 
 import (
-	"strings"
 	"testing"
 
 	"github.com/stretchr/testify/suite"
@@ -43,6 +42,6 @@ func (s *OACTestSuite) TestNewOACWithDefaultNamePattern() {
 
 func (s *OACTestSuite) TestNewOACWithShortNamePattern() {
 	oac := NewOAC("wellz-accounts-fe-develop-nv.nv.dev.us.gympass.cloud", "gympass-develop-nv-wellz-accounts-fe-develop-nv.s3.us-east-1.amazonaws.com")
-	s.True(strings.HasPrefix(oac.Name, "wellz-accounts-fe-develop-nv-"))
+	s.Equal("wellz-accounts-fe-develop-nv-51d6956b", oac.Name)
 	s.True(len(oac.Name) <= 63)
 }