update doc

tools/datastreamer/Makefile

@@ -35,7 +35,7 @@ decode-batch: ## Runs the tool to decode a given batch
 	go run main.go decode-batch -cfg config/tool.config.toml -batch $(arguments)
 
 .PHONY: decode-batchl2data
-decode-batchl2data: ## Runs the tool to decode a given batch and show its l2 data
+decode-batchl2data: ## Runs the tool to decode a given batch and shows its l2 data
 	go run main.go decode-batchl2data -cfg config/tool.config.toml -batch $(arguments)	
 
 .PHONY: dump-batch

tools/datastreamer/README.md

@@ -61,6 +61,7 @@ To see avalible options type `make` once in the tool folder.
 ```
 decode-batch                   Runs the tool to decode a given batch
 decode-batch-offline           Runs the offline tool to decode a given batch
+decode-batchl2data             Runs the tool to decode a given batch and shows its l2 data
 decode-entry                   Runs the tool to decode a given entry number
 decode-entry-offline           Runs the offline tool to decode a given entry number
 decode-l2block                 Runs the tool to decode a given L2 block
@@ -72,9 +73,10 @@ help                           Prints this help
 truncate                       Runs the offline tool to truncate the stream file
 ```
 
-All the decode options can work online, connecting to a node serving the stream, or offline, accessing the data stream files directly.
+Almost all the decode options can work online, connecting to a node serving the stream, or offline, accessing the data stream files directly. The only one that only works online is `decode-batchl2data`.
 
 - **Decode Batch**: Decodes a Batch from a given number and shows all its data, l2blocks and transactions.
+- **Decode BatchL2Data**: Decodes a Batch from a given number and shows its BatchL2Data. It may be useful to compare results against the RPC endpoint `zkevm_getBatchByNumber`
 - **Decode Entry**: Decodes an entry and shows its content. Entry can be anything: bookmark, batch start, batch end, l2block, updateGER or transaction.
 - **Decode L2Block**: Decodes a L2Block from a given number and shows all its data and transactions.
 - **Truncate**: Truncates the file to a given entry number. Useful in case of unwinding the network.
@@ -138,6 +140,14 @@ State Root......: 0xada6af5a8bf491712d5ba14c67283a7b516245cd571151c5ade13f82532a
 Local Exit Root.: 0x0000000000000000000000000000000000000000000000000000000000000000
 ```
 
+### Get BatchL2Data from Batch 2 in the Data Stream
+
+`make decode-batchl2data 1`
+
+```
+
+```
+
 ### Get content of L2Block 1 from an online Data Stream
 
 `make decode-l2block 1`

tools/datastreamer/main.go

@@ -806,28 +806,16 @@ func (h *handler) handleReceivedDataStream(entry *datastreamer.FileEntry, client
 			}
 
 			// Print batch data
-			if h.currentStreamBatch.BatchNumber != 0 {
-				var batchl2Data []byte
-
-				batchl2Data, err = state.EncodeBatchV2(&h.currentStreamBatchRaw)
-				if err != nil {
-					log.Errorf("Error encoding batch: %v", err)
-					return err
-				}
-
-				// Log batchL2Data as hex string
-				printColored(color.FgGreen, "BatchL2Data.....: ")
-				printColored(color.FgHiWhite, fmt.Sprintf("%s\n", common.Bytes2Hex(batchl2Data)))
+			batchl2Data, err := state.EncodeBatchV2(&h.currentStreamBatchRaw)
+			if err != nil {
+				log.Errorf("Error encoding batch: %v", err)
+				return err
 			}
 
-			// Finish the process
-			/*
-				err = client.ExecCommandStop()
-				if err != nil {
-					log.Errorf("Error stopping the data stream: %v", err)
-					return err
-				}
-			*/
+			// Log batchL2Data as hex string
+			printColored(color.FgGreen, "BatchL2Data.....: ")
+			printColored(color.FgHiWhite, fmt.Sprintf("%s\n", "0x"+common.Bytes2Hex(batchl2Data)))
+
 			os.Exit(0)
 			return nil
 		case datastreamer.EntryType(datastream.EntryType_ENTRY_TYPE_L2_BLOCK):