try to fix #106

Signed-off-by: Sam Yuan <[email protected]>

pkg/chaincode/lifecycle.go

@@ -10,6 +10,7 @@ import (
 	"fmt"
 
 	"github.com/hyperledger/fabric-protos-go-apiv2/peer"
+	"google.golang.org/protobuf/proto"
 )
 
 const (
@@ -85,3 +86,40 @@ func (d *Definition) validate() error {
 	}
 	return nil
 }
+
+func CreateChaincodeDefinition(channelName, packageID, name, version, endorsementPlugin, validationPlugin, signaturePolicy, channelConfigPolicy string, seq int64, initflag bool, pollections *peer.CollectionConfigPackage) (*Definition, error) {
+	signaturePolicyEnvelope, err := FromString(signaturePolicy)
+	if err != nil {
+		return nil, err
+	}
+	applicationPolicy := &peer.ApplicationPolicy{
+		Type: &peer.ApplicationPolicy_SignaturePolicy{
+			SignaturePolicy: signaturePolicyEnvelope,
+		},
+	}
+	if channelConfigPolicy != "" {
+		applicationPolicy = &peer.ApplicationPolicy{
+			Type: &peer.ApplicationPolicy_ChannelConfigPolicyReference{
+				ChannelConfigPolicyReference: channelConfigPolicy,
+			},
+		}
+	}
+	data, err := proto.Marshal(applicationPolicy)
+	if err != nil {
+		return nil, err
+	}
+
+	chaincodeDef := &Definition{
+		ChannelName:         channelName,
+		PackageID:           packageID,
+		Name:                name,
+		Version:             version,
+		EndorsementPlugin:   endorsementPlugin,
+		ValidationPlugin:    validationPlugin,
+		Sequence:            seq,
+		ValidationParameter: data,
+		InitRequired:        initflag,
+		Collections:         pollections,
+	}
+	return chaincodeDef, nil
+}