Add gc for eth tx database

node/config/doc_gen.go

@@ -406,6 +406,13 @@ see https://lotus.filecoin.io/storage-providers/advanced-configurations/market/#
 
 			Comment: `EnableEthHashToFilecoinCidMapping enables storing a mapping of eth transaction hashes to filecoin message Cids`,
 		},
+		{
+			Name: "EthTxHashMappingLifetimeDays",
+			Type: "int",
+
+			Comment: `EthTxHashMappingLifetimeDays the transaction hash lookup database will delete mappings that have been stored for more than x days
+Set to 0 to keep all mappings`,
+		},
 	},
 	"FullNode": []DocField{
 		{

node/config/types.go

@@ -697,4 +697,7 @@ type ActorEventConfig struct {
 type FevmConfig struct {
 	// EnableEthHashToFilecoinCidMapping enables storing a mapping of eth transaction hashes to filecoin message Cids
 	EnableEthHashToFilecoinCidMapping bool
+	// EthTxHashMappingLifetimeDays the transaction hash lookup database will delete mappings that have been stored for more than x days
+	// Set to 0 to keep all mappings
+	EthTxHashMappingLifetimeDays int
 }