add base support of polkadot/substrate/vara chain (#332)

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

@@ -0,0 +1,5 @@
+package io.emeraldpay.dshackle
+
+enum class BlockchainType {
+    UNKNOWN, BITCOIN, ETHEREUM, STARKNET, POLKADOT;
+}

foundation/src/main/kotlin/org/drpc/chainsconfig/ChainsConfig.kt

@@ -30,6 +30,7 @@ data class ChainsConfig(private val chains: List<ChainConfig>) : Iterable<Chains
         val callLimitContract: String?,
         val id: String,
         val blockchain: String,
+        val type: String
     ) {
         companion object {
             @JvmStatic
@@ -49,6 +50,7 @@ data class ChainsConfig(private val chains: List<ChainConfig>) : Iterable<Chains
                 callLimitContract,
                 "undefined",
                 "undefined",
+                "unknown"
             )
         }
 

foundation/src/main/kotlin/org/drpc/chainsconfig/ChainsConfigReader.kt

@@ -23,6 +23,8 @@ class ChainsConfigReader(
                 protocols.value.fold(emptyMap()) { acc, protocol ->
                     val blockchain = getValueAsString(protocol, "id")
                         ?: throw IllegalArgumentException("Blockchain id is not defined")
+                    val type = getValueAsString(protocol, "type")
+                        ?: throw IllegalArgumentException("undefined type for $blockchain")
                     val settings = mergeMappingNode(default, getMapping(protocol, "settings"))
                     acc.plus(
                         getList<MappingNode>(protocol, "chains")?.let { chains ->
@@ -38,6 +40,10 @@ class ChainsConfigReader(
                                                 ScalarNode(Tag.STR, "blockchain", null, null, DumperOptions.ScalarStyle.LITERAL),
                                                 ScalarNode(Tag.STR, blockchain, null, null, DumperOptions.ScalarStyle.LITERAL),
                                             ),
+                                            NodeTuple(
+                                                ScalarNode(Tag.STR, "type", null, null, DumperOptions.ScalarStyle.LITERAL),
+                                                ScalarNode(Tag.STR, type, null, null, DumperOptions.ScalarStyle.LITERAL),
+                                            ),
                                         ),
                                         chain.flowStyle,
                                     ),
@@ -78,6 +84,8 @@ class ChainsConfigReader(
         val netVersion = getValueAsLong(node, "net-version")?.toBigInteger() ?: BigInteger(chainId.drop(2), 16)
         val shortNames = getListOfString(node, "short-names")
             ?: throw IllegalArgumentException("undefined shortnames for $blockchain")
+        val type = getValueAsString(node, "type")
+            ?: throw IllegalArgumentException("undefined type for $blockchain")
         return ChainsConfig.ChainConfig(
             expectedBlockTime = expectedBlockTime,
             syncingLagSize = lags.first,
@@ -91,6 +99,7 @@ class ChainsConfigReader(
             shortNames = shortNames,
             id = id,
             blockchain = blockchain,
+            type = type
         )
     }
 

foundation/src/main/resources/chains.yaml

@@ -641,3 +641,26 @@ chain-settings:
           short-names: [ astar-zkatana ]
           chain-id: 0x133e40
           grpcId: 10035
+    - id: vara
+      label: varanet
+      type: polkadot
+      settings:
+        expected-block-time: 3s
+        options:
+          validate-peers: false
+        lags:
+          syncing: 10
+          lagging: 5
+      chains:
+        - id: Mainnet
+          priority: 1
+          code: VARA_MAINNET
+          short-names: [ vara ]
+          chain-id: 0x0
+          grpcId: 1027
+        - id: Testnet
+          priority: 1
+          code: VARA_TESTMET
+          short-names: [ vara-testnet ]
+          chain-id: 0x0
+          grpcId: 10036