CHANGELOG.md

@@ -67,6 +67,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * (rpc) [#1284](https://github.com/evmos/ethermint/pull/1284) Fix internal trace response upon incomplete `eth_sendTransaction` call.
 * (rpc) [#1340](https://github.com/evmos/ethermint/pull/1340) Fix error response when `eth_estimateGas` height provided is not found.
 * (rpc) [#1354](https://github.com/evmos/ethermint/pull/1354) Fix grpc query failure(`BaseFee` and `EthCall`) on legacy block states.
+* (cli) [#1362](https://github.com/evmos/ethermint/pull/1362) Fix `index-eth-tx` error when the indexer db is empty.
 
 ## [v0.19.2] - 2022-08-29
 

gomod2nix.toml

@@ -105,8 +105,8 @@ schema = 3
     version = "v0.19.2-0.20220916140702-9b6be3095313"
     hash = "sha256-49xr/7/4L1wZ45eW5lE7C4SlcbGf4gBY+662SfJiWPQ="
   [mod."github.com/cosmos/ibc-go/v5"]
-    version = "v5.0.0-rc2"
-    hash = "sha256-p4tpb6I6bdXix1sTYivJEygUtM4q+nTIKdSlf6c/LCw="
+    version = "v5.0.0"
+    hash = "sha256-sDZdmuGohaaBF7bxrjo9PWJnmoF+VOkjySYhsFixPz4="
   [mod."github.com/cosmos/ledger-cosmos-go"]
     version = "v0.11.1"
     hash = "sha256-yli+VvVtZmHo2LPvCY6lYVUfcCDn3sBLDL+a8KIlqDA="

server/indexer_cmd.go

@@ -15,11 +15,14 @@ import (
 
 func NewIndexTxCmd() *cobra.Command {
 	cmd := &cobra.Command{
-		Use:   "index-eth-tx [forward|backward]",
+		Use:   "index-eth-tx [backward|forward]",
 		Short: "Index historical eth txs",
 		Long: `Index historical eth txs, it only support two traverse direction to avoid creating gaps in the indexer db if using arbitrary block ranges:
-		- backward: index the blocks from the first indexed block to the earliest block in the chain.
+		- backward: index the blocks from the first indexed block to the earliest block in the chain, if indexer db is empty, start from the latest block.
 		- forward: index the blocks from the latest indexed block to latest block in the chain.
+
+		When start the node, the indexer start from the latest indexed block to avoid creating gap.
+        Backward mode should be used most of the time, so the latest indexed block is always up-to-date.
 		`,
 		Args: cobra.ExactArgs(1),
 		RunE: func(cmd *cobra.Command, args []string) error {
@@ -82,7 +85,8 @@ func NewIndexTxCmd() *cobra.Command {
 					return err
 				}
 				if first == -1 {
-					return fmt.Errorf("indexer db is empty")
+					// start from the latest block if indexer db is empty
+					first = blockStore.Height()
 				}
 				for i := first - 1; i > 0; i-- {
 					if err := indexBlock(i); err != nil {