Support Linea chain (#259)

docs/04-upstream-config.adoc

@@ -149,6 +149,8 @@ Currently, dshackle supports next chains (should be used as chain names in confi
 - bitcoin (bitcoin-testnet)
 - base
 - base-goerli
+- linea
+- linea-goerli
 
 === Roles and Fallback upstream
 

src/main/kotlin/io/emeraldpay/dshackle/BlockchainType.kt

@@ -23,7 +23,9 @@ enum class BlockchainType {
                 chain == Chain.ZKSYNC__TESTNET ||
                 chain == Chain.POLYGON_POS__MUMBAI ||
                 chain == Chain.BASE__MAINNET ||
-                chain == Chain.BASE__GOERLI
+                chain == Chain.BASE__GOERLI ||
+                chain == Chain.LINEA__MAINNET ||
+                chain == Chain.LINEA__GOERLI
             ) {
                 return EVM_POS
             }

src/main/kotlin/io/emeraldpay/dshackle/Chain.kt

@@ -48,6 +48,7 @@ enum class Chain(val id: Int, val chainCode: String, val chainName: String) {
     ),
     ZKSYNC__MAINNET(1009, "ZKSYNC", "ZkSync Era"),
     BASE__MAINNET(1010, "BASE", "Base"),
+    LINEA__MAINNET(1011, "LINEA", "Linea"),
 
     // Testnets
     ETHEREUM__MORDEN(10001, "MORDEN", "Morden Testnet"),
@@ -86,7 +87,8 @@ enum class Chain(val id: Int, val chainCode: String, val chainName: String) {
         "POLYGON_POS_MUMBAI",
         "Polygon POS Mumbai Testnet"
     ),
-    BASE__GOERLI(10014, "BASE_GOERLI", "Base Goerli Testnet");
+    BASE__GOERLI(10014, "BASE_GOERLI", "Base Goerli Testnet"),
+    LINEA__GOERLI(10015, "LINEA_GOERLI", "Linea Goerli Testnet");
 
     companion object {
         fun byId(id: Int): Chain {

src/main/kotlin/io/emeraldpay/dshackle/Global.kt

@@ -79,6 +79,8 @@ class Global {
             "polygon-mumbai" to Chain.POLYGON_POS__MUMBAI,
             "base" to Chain.BASE__MAINNET,
             "base-goerli" to Chain.BASE__GOERLI,
+            "linea" to Chain.LINEA__MAINNET,
+            "linea-goerli" to Chain.LINEA__GOERLI,
         )
 
         fun chainById(id: String?): Chain {

src/main/kotlin/io/emeraldpay/dshackle/upstream/calls/DefaultEthereumMethods.kt

@@ -274,6 +274,9 @@ class DefaultEthereumMethods(
 
         Chain.BASE__MAINNET to HardcodedData("\"8453\"", "\"0x2105\""),
         Chain.BASE__GOERLI to HardcodedData("\"84531\"", "\"0x14a33\""),
+
+        Chain.LINEA__MAINNET to HardcodedData("\"59144\"", "\"0xe708\""),
+        Chain.LINEA__GOERLI to HardcodedData("\"59140\"", "\"0xe704\""),
     )
 
     override fun executeHardcoded(method: String): ByteArray {