[FAB-7695]: Restructure filtered events proto msg.

Currently FilteredBlock proto message inlcude the common.HeaderType
information, while this information should be available per transaction
base. E.g. instead of having:

message FilteredBlock {
    string channel_id = 1;
    uint64 number = 2; // The position in the blockchain
    common.HeaderType type = 3;
    repeated FilteredTransaction filtered_tx = 4;
}

this commit moves transaction header type into FilteredTransaction and
introduces a new extensible field to accomodate possible future
extenstion for more transaction types:

message FilteredTransaction {
    string txid = 1;
    common.HeaderType type = 2;
    TxValidationCode tx_validation_code = 3;
    oneof Data {
        FilteredProposalResponse proposal_response = 4;
    }
}

Change-Id: I92315ba391a35714282ed390c2c3d825673dc240
Signed-off-by: Artem Barger <bartem@il.ibm.com>

core/peer/deliverevents.go

@@ -181,32 +181,34 @@ func (block *blockEvent) toFilteredBlock() (*peer.FilteredBlock, error) {
 			return nil, err
 		}
 
-		filteredBlock.Type = common.HeaderType(chdr.Type)
 		filteredBlock.ChannelId = chdr.ChannelId
 
-		if filteredBlock.Type == common.HeaderType_ENDORSER_TRANSACTION {
+		filteredTransaction := &peer.FilteredTransaction{
+			Txid:             chdr.TxId,
+			Type:             common.HeaderType(chdr.Type),
+			TxValidationCode: txsFltr.Flag(txIndex)}
+
+		if filteredTransaction.Type == common.HeaderType_ENDORSER_TRANSACTION {
 			tx, err := utils.GetTransaction(payload.Data)
 			if err != nil {
 				return nil, errors.WithMessage(err, "error unmarshal transaction payload for block event")
 			}
 
-			filteredActionArray, err := transactionActions(tx.Actions).toFilteredActions()
+			filteredTransaction.Data, err = transactionActions(tx.Actions).toFilteredActions()
 			if err != nil {
 				logger.Errorf(err.Error())
 				return nil, err
 			}
-			filteredBlock.FilteredTx = append(filteredBlock.FilteredTx, &peer.FilteredTransaction{
-				Txid:             chdr.TxId,
-				TxValidationCode: txsFltr.Flag(txIndex),
-				FilteredAction:   filteredActionArray})
 		}
+
+		filteredBlock.FilteredTx = append(filteredBlock.FilteredTx, filteredTransaction)
 	}
 
 	return filteredBlock, nil
 }
 
-func (ta transactionActions) toFilteredActions() ([]*peer.FilteredAction, error) {
-	var res []*peer.FilteredAction
+func (ta transactionActions) toFilteredActions() (*peer.FilteredTransaction_ProposalResponse, error) {
+	proposalResponse := &peer.FilteredProposalResponse{}
 	for _, action := range ta {
 		chaincodeActionPayload, err := utils.GetChaincodeActionPayload(action.Payload)
 		if err != nil {
@@ -229,16 +231,19 @@ func (ta transactionActions) toFilteredActions() ([]*peer.FilteredAction, error)
 		}
 
 		if ccEvent.GetChaincodeId() != "" {
-			res = append(res, &peer.FilteredAction{
+			filteredAction := &peer.FilteredChaincodeAction{
 				CcEvent: &peer.ChaincodeEvent{
 					TxId:        ccEvent.TxId,
 					ChaincodeId: ccEvent.ChaincodeId,
 					EventName:   ccEvent.EventName,
 				},
-			})
+			}
+			proposalResponse.ChaincodeActions = append(proposalResponse.ChaincodeActions, filteredAction)
 		}
 	}
-	return res, nil
+	return &peer.FilteredTransaction_ProposalResponse{
+		ProposalResponse: proposalResponse,
+	}, nil
 }
 
 func dumpStacktraceOnPanic() {

core/peer/deliverevents_test.go

@@ -247,13 +247,17 @@ func TestEventsServer_DeliverFiltered(t *testing.T) {
 						test.Equal(uint64(0), block.Number)
 						test.Equal(test.channelID, block.ChannelId)
 						test.Equal(1, len(block.FilteredTx))
-						test.Equal(test.txID, block.FilteredTx[0].Txid)
-						test.Equal(peer.TxValidationCode_VALID, block.FilteredTx[0].TxValidationCode)
-						filteredActions := block.FilteredTx[0].FilteredAction
-						test.Equal(1, len(filteredActions))
-						test.Equal(test.eventName, filteredActions[0].CcEvent.EventName)
-						test.Equal(test.txID, filteredActions[0].CcEvent.TxId)
-						test.Equal(test.chaincodeName, filteredActions[0].CcEvent.ChaincodeId)
+						tx := block.FilteredTx[0]
+						test.Equal(test.txID, tx.Txid)
+						test.Equal(peer.TxValidationCode_VALID, tx.TxValidationCode)
+						test.Equal(common.HeaderType_ENDORSER_TRANSACTION, tx.Type)
+						proposalResponse := tx.GetProposalResponse()
+						test.NotNil(proposalResponse)
+						chaincodeActions := proposalResponse.ChaincodeActions
+						test.Equal(1, len(chaincodeActions))
+						test.Equal(test.eventName, chaincodeActions[0].CcEvent.EventName)
+						test.Equal(test.txID, chaincodeActions[0].CcEvent.TxId)
+						test.Equal(test.chaincodeName, chaincodeActions[0].CcEvent.ChaincodeId)
 					default:
 						test.FailNow("Unexpected response type")
 					}

events/producer/eventhelper.go

@@ -68,8 +68,8 @@ func CreateBlockEvents(block *common.Block) (bevent *pb.Event, fbevent *pb.Event
 						return nil, nil, "", fmt.Errorf("error unmarshalling transaction payload for block event: %s", err)
 					}
 
-					filteredTx := &pb.FilteredTransaction{Txid: chdr.TxId, TxValidationCode: txsFltr.Flag(txIndex)}
-					filteredActionArray := []*pb.FilteredAction{}
+					filteredTx := &pb.FilteredTransaction{Txid: chdr.TxId, TxValidationCode: txsFltr.Flag(txIndex), Type: headerType}
+					proposalResponse := &pb.FilteredProposalResponse{}
 					for _, action := range tx.Actions {
 						chaincodeActionPayload, err := utils.GetChaincodeActionPayload(action.Payload)
 						if err != nil {
@@ -90,14 +90,14 @@ func CreateBlockEvents(block *common.Block) (bevent *pb.Event, fbevent *pb.Event
 							return nil, nil, "", fmt.Errorf("error unmarshalling chaincode event for block event: %s", err)
 						}
 
-						filteredAction := &pb.FilteredAction{}
+						chaincodeAction := &pb.FilteredChaincodeAction{}
 						if ccEvent.GetChaincodeId() != "" {
 							filteredCcEvent := ccEvent
 							// nil out ccevent payload
 							filteredCcEvent.Payload = nil
-							filteredAction.CcEvent = filteredCcEvent
+							chaincodeAction.CcEvent = filteredCcEvent
 						}
-						filteredActionArray = append(filteredActionArray, filteredAction)
+						proposalResponse.ChaincodeActions = append(proposalResponse.ChaincodeActions, chaincodeAction)
 
 						// Drop read write set from transaction before sending block event
 						// Performance issue with chaincode deploy txs and causes nodejs grpc
@@ -114,7 +114,7 @@ func CreateBlockEvents(block *common.Block) (bevent *pb.Event, fbevent *pb.Event
 							return nil, nil, "", fmt.Errorf("error marshalling tx action payload for block event: %s", err)
 						}
 					}
-					filteredTx.FilteredAction = filteredActionArray
+					filteredTx.Data = &pb.FilteredTransaction_ProposalResponse{ProposalResponse: proposalResponse}
 					filteredTxArray = append(filteredTxArray, filteredTx)
 
 					payload.Data, err = utils.GetBytesTransaction(tx)
@@ -136,7 +136,6 @@ func CreateBlockEvents(block *common.Block) (bevent *pb.Event, fbevent *pb.Event
 	}
 	filteredBlockForEvent.ChannelId = channelID
 	filteredBlockForEvent.Number = block.Header.Number
-	filteredBlockForEvent.Type = headerType
 	filteredBlockForEvent.FilteredTx = filteredTxArray
 
 	return CreateBlockEvent(blockForEvent), CreateFilteredBlockEvent(filteredBlockForEvent), channelID, nil