Introduce notice about IBFT removal (#2013)

* Introduce notice about IBFT removal

* Move IBFT notice at the top of the log file in the server

command/genesis/genesis.go

@@ -365,6 +365,7 @@ func runCommand(cmd *cobra.Command, _ []string) {
 	if params.isPolyBFTConsensus() {
 		err = params.generatePolyBftChainConfig(outputter)
 	} else {
+		_, _ = outputter.Write([]byte(fmt.Sprintf("%s\n", common.IBFTImportantNotice)))
 		err = params.generateGenesis()
 	}
 

helper/common/common.go

@@ -29,6 +29,12 @@ var (
 	MaxSafeJSInt = uint64(math.Pow(2, 53) - 2)
 
 	errInvalidDuration = errors.New("invalid duration")
+
+	IBFTImportantNotice = "***** IMPORTANT NOTICE: IBFT consensus protocol is about to be" +
+		" removed from the Edge in the following release. *****\n" +
+		"Please migrate to the PolyBFT protocol and plan your activities accordingly.\n" +
+		"More information on how to execute the migration process can be found here" +
+		"(https://wiki.polygon.technology/docs/edge/operate/ibft-to-polybft/)."
 )
 
 // RetryForever will execute a function until it completes without error or

server/server.go

@@ -146,6 +146,10 @@ func NewServer(config *Config) (*Server, error) {
 		restoreProgression: progress.NewProgressionWrapper(progress.ChainSyncRestore),
 	}
 
+	if config.Chain.Params.GetEngine() == string(IBFTConsensus) {
+		m.logger.Info(common.IBFTImportantNotice)
+	}
+
 	m.logger.Info("Data dir", "path", config.DataDir)
 
 	var dirPaths = []string{