Update ID rules in NewVerifiableCredentialBuilder

credential/builder.go

@@ -2,6 +2,7 @@
 
 import (
 	"fmt"
+	"net/url"
 	"reflect"
 
 	"github.com/google/uuid"
@@ -11,6 +12,8 @@
 	"github.com/pkg/errors"
 )
 
+type IDValue string // IDValue represents different types of ID values for building Verifiable Credentials
+
 const (
 	VerifiableCredentialsLinkedDataContext string = "https://www.w3.org/2018/credentials/v1"
 	VerifiableCredentialType               string = "VerifiableCredential"
@@ -20,6 +23,9 @@
 	VerifiablePresentationType             string = "VerifiablePresentation"
 
 	BuilderEmptyError string = "builder cannot be empty"
+
+	EmptyIDValue    IDValue = ""         // EmptyIDValue indicates setting the ID value to empty
+	GenerateIDValue IDValue = "generate" // GenerateIDValue indicates generating a UUID as the ID value.
 )
 
 // VerifiableCredentialBuilder uses the builder pattern to construct a verifiable credential
@@ -31,19 +37,32 @@
 }
 
 // NewVerifiableCredentialBuilder returns an initialized credential builder with some default fields populated
-func NewVerifiableCredentialBuilder() VerifiableCredentialBuilder {
+// idValue determines whether VC will have empty ID/ random UUID/ customID.
+func NewVerifiableCredentialBuilder(idValue IDValue) VerifiableCredentialBuilder {
 	contexts := []string{VerifiableCredentialsLinkedDataContext}
 	types := []string{VerifiableCredentialType}
-	return VerifiableCredentialBuilder{
+	var id string
+	switch {
+	case idValue == EmptyIDValue:
+		id = ""
+	case idValue == GenerateIDValue:
+		id = uuid.NewString()
+	default:
+		id = string(idValue)
+	}
+
+	vcb := VerifiableCredentialBuilder{
 		contexts: contexts,
 		types:    types,
 		VerifiableCredential: &VerifiableCredential{
-			ID:           uuid.NewString(),
+			ID:           id,
 			Context:      contexts,
 			Type:         types,
 			IssuanceDate: util.GetRFC3339Timestamp(),
 		},
 	}
+	return vcb
+
 }
 
 // Build attempts to turn a builder into a valid verifiable credential, doing some object model validation.
@@ -85,7 +104,9 @@
 	if vcb.IsEmpty() {
 		return errors.New(BuilderEmptyError)
 	}
-
+	if _, err := url.Parse(id); err != nil {
+		return errors.Wrap(err, "malformed id")
+	}
 	vcb.ID = id
 	return nil
 }

credential/builder_test.go

@@ -44,7 +44,7 @@
 	assert.NoError(t, err)
 
 	// re-build with our builder
-	builder := NewVerifiableCredentialBuilder()
+	builder := NewVerifiableCredentialBuilder(EmptyIDValue)
 
 	err = builder.AddContext(knownContext)
 	assert.NoError(t, err)
@@ -72,8 +72,15 @@
 }
 
 // Exercise all builder methods
 func TestCredentialBuilder(t *testing.T) {
-	builder := NewVerifiableCredentialBuilder()
+
+	builder := NewVerifiableCredentialBuilder(EmptyIDValue)
+	assert.Empty(t, builder.ID)
+
+	builder = NewVerifiableCredentialBuilder(IDValue("customid-123"))
+	assert.Equal(t, builder.ID, "customid-123")
+
+	builder = NewVerifiableCredentialBuilder(GenerateIDValue)
 	_, err := builder.Build()
 	assert.Error(t, err)
 	notReadyErr := "credential not ready to be built"
@@ -93,11 +100,11 @@
 	err = builder.AddContext("https://www.w3.org/2018/credentials/examples/v1")
 	assert.NoError(t, err)
 
-	// there is a default id
+	//default id is not empty
 	assert.NotEmpty(t, builder.ID)
-
+    
 	// set id
-	id := "test-id"
+	id := "p"
 	err = builder.SetID(id)
 	assert.NoError(t, err)
 

credential/status/statuslist2021.go

@@ -73,7 +73,7 @@ func GenerateStatusList2021Credential(id string, issuer string, purpose StatusPu
 		EncodedList:   bitString,
 	}
 
-	builder := credential.NewVerifiableCredentialBuilder()
+	builder := credential.NewVerifiableCredentialBuilder(credential.GenerateIDValue)
 	errMsgFragment := "could not generate status list credential: error setting "
 	if err = builder.SetID(id); err != nil {
 		return nil, errors.Wrap(err, errMsgFragment+"id")

example/manifest/manifest.go

@@ -181,7 +181,7 @@ func prepareCredentialManifest(issuerDID key.DIDKey, licenseSchemaID string) (*m
 // Prepare a credential which is required to fill out the credential manifest's application's
 // input descriptor's requirements
 func issueApplicationCredential(id key.DIDKey, s schema.JSONSchema) (*credential.VerifiableCredential, error) {
-	builder := credential.NewVerifiableCredentialBuilder()
+	builder := credential.NewVerifiableCredentialBuilder(credential.GenerateIDValue)
 
 	if err := builder.SetIssuer(id.String()); err != nil {
 		return nil, err
@@ -272,7 +272,7 @@ type driversLicenseFields struct {
 }
 
 func issueDriversLicenseCredential(issuerDID key.DIDKey, subjectDID string, s schema.JSONSchema, data driversLicenseFields) (*credential.VerifiableCredential, error) {
-	builder := credential.NewVerifiableCredentialBuilder()
+	builder := credential.NewVerifiableCredentialBuilder(credential.GenerateIDValue)
 
 	if err := builder.SetIssuer(issuerDID.String()); err != nil {
 		return nil, err

example/usecase/apartment_application/apartment_application.go

@@ -76,7 +76,7 @@ func main() {
 		"birthdate": "1975-01-01",
 	}
 
-	vcBuilder := credential.NewVerifiableCredentialBuilder()
+	vcBuilder := credential.NewVerifiableCredentialBuilder(credential.GenerateIDValue)
 
 	err = vcBuilder.SetIssuer(string(*knownIssuer))
 	example.HandleExampleError(err, "Failed to set issuer")

example/usecase/steel_thread/steel_thread.go

@@ -273,7 +273,7 @@ func createVerifiableCredential(issuerDID string, walletDID string) credential.V
 	credSubject := vc.CredentialSubject
 	credSubject["id"] = walletDID
 
-	builder := credential.NewVerifiableCredentialBuilder()
+	builder := credential.NewVerifiableCredentialBuilder(credential.GenerateIDValue)
 	_ = builder.SetIssuer(issuerDID)
 	_ = builder.SetCredentialSubject(credSubject)
 	_ = builder.SetCredentialSchema(*vc.CredentialSchema)

go.work.sum

@@ -224,6 +224,7 @@ github.com/xeipuuv/gojsonreference v0.0.0-20180127040603-bd5ef7bd5415/go.mod h1:
 github.com/xeipuuv/gojsonschema v1.2.0 h1:LhYJRs+L4fBtjZUfuSZIKGeVu0QRy8e5Xi7D17UxZ74=
 github.com/xeipuuv/gojsonschema v1.2.0/go.mod h1:anYRn/JVcOK2ZgGU+IjEV4nwlhoK5sQluxsYJ78Id3Y=
 github.com/yuin/goldmark v1.4.13 h1:fVcFKWvrslecOb/tg+Cc05dkeYx540o0FuFt3nUVDoE=
+github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 go.opencensus.io v0.23.0 h1:gqCw0LfLxScz8irSi8exQc7fyQ0fKQU/qnC/X8+V/1M=
 go.opencensus.io v0.23.0/go.mod h1:XItmlyltB5F7CS4xOC1DcqMoFqwtC6OG2xF7mCv7P7E=
 go.uber.org/atomic v1.9.0 h1:ECmE8Bn/WFTYwEW/bpKD3M8VtR/zQVbavAoalC1PYyE=
@@ -259,12 +260,14 @@ golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20190423024810-112230192c58 h1:8gQV6CLnAEikrhgkHFbMAEhagSSnXWGV915qUMm9mrU=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.1.0 h1:wsuoTGHzEhffawBOhz5CYhcrV4IdKZbEyZjBMuTp12o=
+golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.2.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.3.0 h1:ftCYgMx6zT/asHUrPw8BLLscYtGznsLAnjq5RH9P66E=
 golang.org/x/sync v0.3.0/go.mod h1:FU7BRWz2tNW+3quACPkgCx/L+uEAv1htQ0V83Z9Rj+Y=
 golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.3.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.10.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.13.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=