[FAB-9688] Remove dangerous unused CCID.ChainID

The CCID struct has a ChainID field.  This field affects the output of
GetName().  There is a comment in GetName() indicating that if unset,
the chaincode must be a chainless system chaincode, however, this field
is in fact never set.  If it were, the rest of the chaincode container
logic would break, and we would spawn a container per chaincode per
channel, instead of just per chaincode.

This CR removes this unused field and the logic in GetName around it.

Change-Id: I9f666d7f2c2942372a363bc301f275c56fe55228
Signed-off-by: Jason Yellick <jyellick@us.ibm.com>

Author: Jason Yellick

core/chaincode/exectransaction_test.go

@@ -530,7 +530,7 @@ func invokeExample02Transaction(ctxt context.Context, cccid *ccprovider.CCContex
 
 	if destroyImage {
 		theChaincodeSupport.Stop(ctxt, cccid, &pb.ChaincodeDeploymentSpec{ChaincodeSpec: spec})
-		dir := container.DestroyImageReq{CCID: ccintf.CCID{ChaincodeSpec: spec, NetworkID: theChaincodeSupport.peerNetworkID, PeerID: theChaincodeSupport.peerID, ChainID: cccid.ChainID}, Force: true, NoPrune: true}
+		dir := container.DestroyImageReq{CCID: ccintf.CCID{ChaincodeSpec: spec, NetworkID: theChaincodeSupport.peerNetworkID, PeerID: theChaincodeSupport.peerID}, Force: true, NoPrune: true}
 
 		_, err = container.VMCProcess(ctxt, container.DOCKER, dir)
 		if err != nil {

core/container/ccintf/ccintf.go

@@ -1,17 +1,7 @@
 /*
-Copyright IBM Corp. 2016 All Rights Reserved.
+Copyright IBM Corp. All Rights Reserved.
 
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-		 http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
+SPDX-License-Identifier: Apache-2.0
 */
 
 package ccintf
@@ -21,9 +11,6 @@ package ccintf
 //Currently inproccontroller uses it. dockercontroller does not.
 
 import (
-	"encoding/hex"
-
-	"github.com/hyperledger/fabric/common/util"
 	pb "github.com/hyperledger/fabric/protos/peer"
 	"golang.org/x/net/context"
 )
@@ -50,7 +37,6 @@ type CCID struct {
 	ChaincodeSpec *pb.ChaincodeSpec
 	NetworkID     string
 	PeerID        string
-	ChainID       string
 	Version       string
 }
 
@@ -65,12 +51,5 @@ func (ccid *CCID) GetName() string {
 		name = name + "-" + ccid.Version
 	}
 
-	//this better be chainless system chaincode!
-	if ccid.ChainID != "" {
-		hash := util.ComputeSHA256([]byte(ccid.ChainID))
-		hexstr := hex.EncodeToString(hash[:])
-		name = name + "-" + hexstr
-	}
-
 	return name
 }

core/container/ccintf/ccintf_test.go

@@ -1,26 +1,14 @@
 /*
-Copyright IBM Corp. 2017 All Rights Reserved.
+Copyright IBM Corp. All Rights Reserved.
 
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-		 http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
+SPDX-License-Identifier: Apache-2.0
 */
 
 package ccintf
 
 import (
-	"encoding/hex"
 	"testing"
 
-	"github.com/hyperledger/fabric/common/util"
 	pb "github.com/hyperledger/fabric/protos/peer"
 	"github.com/stretchr/testify/assert"
 )
@@ -30,11 +18,6 @@ func TestGetName(t *testing.T) {
 	ccid := &CCID{ChaincodeSpec: spec, Version: "ver"}
 	name := ccid.GetName()
 	assert.Equal(t, "ccname-ver", name, "unexpected name")
-
-	ccid.ChainID = GetCCHandlerKey()
-	hash := hex.EncodeToString(util.ComputeSHA256([]byte(ccid.ChainID)))
-	name = ccid.GetName()
-	assert.Equal(t, "ccname-ver-"+hash, name, "unexpected name with hash")
 }
 
 func TestBadCCID(t *testing.T) {