[FAB-FAB-2634]: Send event of genesis block committed.

After new block is committed there is an event generated,
the only exception currently is for genesis block. This
commit produces event after peer joins the channel and
creates it for the first time.

Change-Id: I99ee9f8f8a7234445517c272f9e80617f176fe56
Signed-off-by: Artem Barger <bartem@il.ibm.com>

core/peer/peer.go

@@ -231,6 +231,7 @@ func CreateChainFromBlock(cb *common.Block) error {
  peerLogger.Errorf("Unable to get genesis block committed into the ledger, chainID %v", cid)
  return err
  }
+
  return createChain(cid, ledger, cb)
 }
 

core/scc/cscc/configure.go

@@ -27,6 +27,7 @@ import (
  "github.com/golang/protobuf/proto"
  "github.com/hyperledger/fabric/core/chaincode/shim"
  "github.com/hyperledger/fabric/core/peer"
+ "github.com/hyperledger/fabric/events/producer"
  pb "github.com/hyperledger/fabric/protos/peer"
  "github.com/hyperledger/fabric/protos/utils"
  "github.com/op/go-logging"
@@ -120,6 +121,11 @@ func joinChain(blockBytes []byte) pb.Response {
 
  peer.InitChain(chainID)
 
+ if err := producer.SendProducerBlockEvent(block); err != nil {
+ msg := fmt.Sprintf("Error sending block event %s", err)
+ return shim.Error(msg)
+ }
+
  return shim.Success(nil)
 }