grpahql: add EIP-2718 and EIP-1559 features to graphql API

EIP-2718:
- chainID: Long! of Query
- chainID: Long of Transaction

EIP-1559:
- baseFeePerGas: BigInt of Block
- effectiveGasPrice: BigInt of Transaction
- maxFeePerGas: BigInt of Transaction
- maxPriorityFeePerGas: BigInt of Transaction

nimbus/graphql/ethapi.nim

@@ -49,6 +49,7 @@ type
     blockNumber: BlockNumber
     receipt: Receipt
     gasUsed: GasInt
+    baseFee: Option[UInt256]
 
   LogNode = ref object of Node
     log: Log
@@ -88,14 +89,15 @@ proc accountNode(ctx: GraphqlContextRef, acc: Account, address: EthAddress, db:
     db: db
   )
 
-proc txNode(ctx: GraphqlContextRef, tx: Transaction, index: int, blockNumber: BlockNumber): Node =
+proc txNode(ctx: GraphqlContextRef, tx: Transaction, index: int, blockNumber: BlockNumber, baseFee: Option[UInt256]): Node =
   TxNode(
     kind: nkMap,
     typeName: ctx.ids[ethTransaction],
     pos: Pos(),
     tx: tx,
     index: index,
-    blockNumber: blockNumber
+    blockNumber: blockNumber,
+    baseFee: baseFee
   )
 
 proc logNode(ctx: GraphqlContextRef, log: Log, index: int, tx: TxNode): Node =
@@ -254,7 +256,7 @@ proc getTxs(ctx: GraphqlContextRef, header: BlockHeader): RespResult =
     var index = 0
     for n in getBlockTransactionData(ctx.chainDB, header.txRoot):
       let tx = rlp.decode(n, Transaction)
-      list.add txNode(ctx, tx, index, header.blockNumber)
+      list.add txNode(ctx, tx, index, header.blockNumber, header.fee)
       inc index
 
     index = 0
@@ -276,7 +278,7 @@ proc getTxAt(ctx: GraphqlContextRef, header: BlockHeader, index: int): RespResul
   try:
     var tx: Transaction
     if getTransaction(ctx.chainDB, header.txRoot, index, tx):
-      let txn = txNode(ctx, tx, index, header.blockNumber)
+      let txn = txNode(ctx, tx, index, header.blockNumber, header.fee)
 
       var i = 0
       var prevUsed = 0.GasInt
@@ -595,10 +597,47 @@ proc txValue(ud: RootRef, params: Args, parent: Node): RespResult {.apiPragma.}
   bigIntNode(tx.tx.value)
 
 proc txGasPrice(ud: RootRef, params: Args, parent: Node): RespResult {.apiPragma.} =
-  let ctx = GraphqlContextRef(ud)
   let tx = TxNode(parent)
+  if tx.tx.txType == TxEip1559:
+    if tx.baseFee.isNone:
+      return bigIntNode(tx.tx.gasPrice)
+
+    let baseFee = tx.baseFee.get().truncate(GasInt)
+    let priorityFee = min(tx.tx.maxPriorityFee, tx.tx.maxFee - baseFee)
+    bigIntNode(priorityFee + baseFee)
+  else:
     bigIntNode(tx.tx.gasPrice)
 
+proc txMaxFeePerGas(ud: RootRef, params: Args, parent: Node): RespResult {.apiPragma.} =
+  let tx = TxNode(parent)
+  if tx.tx.txType == TxEip1559:
+    bigIntNode(tx.tx.maxFee)
+  else:
+    ok(respNull())
+
+proc txMaxPriorityFeePerGas(ud: RootRef, params: Args, parent: Node): RespResult {.apiPragma.} =
+  let tx = TxNode(parent)
+  if tx.tx.txType == TxEip1559:
+    bigIntNode(tx.tx.maxPriorityFee)
+  else:
+    ok(respNull())
+
+proc txEffectiveGasPrice(ud: RootRef, params: Args, parent: Node): RespResult {.apiPragma.} =
+  let tx = TxNode(parent)
+  if tx.baseFee.isNone:
+    return bigIntNode(tx.tx.gasPrice)
+
+  let baseFee = tx.baseFee.get().truncate(GasInt)
+  let priorityFee = min(tx.tx.maxPriorityFee, tx.tx.maxFee - baseFee)
+  bigIntNode(priorityFee + baseFee)
+
+proc txChainId(ud: RootRef, params: Args, parent: Node): RespResult {.apiPragma.} =
+  let tx = TxNode(parent)
+  if tx.tx.txType == TxLegacy:
+    ok(respNull())
+  else:
+    longNode(tx.tx.chainId.uint64)
+
 proc txGas(ud: RootRef, params: Args, parent: Node): RespResult {.apiPragma.} =
   let ctx = GraphqlContextRef(ud)
   let tx = TxNode(parent)
@@ -706,7 +745,11 @@ const txProcs = {
   "s": txS,
   "v": txV,
   "type": txType,
-  "accessList": txAccessList
+  "accessList": txAccessList,
+  "maxFeePerGas": txMaxFeePerGas,
+  "maxPriorityFeePerGas": txMaxPriorityFeePerGas,
+  "effectiveGasPrice": txEffectiveGasPrice,
+  "chainID": txChainId
 }
 
 proc aclAddress(ud: RootRef, params: Args, parent: Node): RespResult {.apiPragma.} =
@@ -919,6 +962,13 @@ proc blockEstimateGas(ud: RootRef, params: Args, parent: Node): RespResult {.api
   except Exception as em:
     err("estimateGas error: " & em.msg)
 
+proc blockBaseFeePerGas(ud: RootRef, params: Args, parent: Node): RespResult {.apiPragma.} =
+  let h = HeaderNode(parent)
+  if h.header.fee.isSome:
+    bigIntNode(h.header.fee.get)
+  else:
+    ok(respNull())
+
 const blockProcs = {
   "parent": blockParent,
   "number": blockNumberImpl,
@@ -946,7 +996,8 @@ const blockProcs = {
   "logs": blockLogs,
   "account": blockAccount,
   "call": blockCall,
-  "estimateGas": blockEstimateGas
+  "estimateGas": blockEstimateGas,
+  "baseFeePerGas": blockBaseFeePerGas
 }
 
 proc callResultData(ud: RootRef, params: Args, parent: Node): RespResult {.apiPragma.} =
@@ -1118,6 +1169,14 @@ proc querySyncing(ud: RootRef, params: Args, parent: Node): RespResult {.apiPrag
   let ctx = GraphqlContextRef(ud)
   ok(respMap(ctx.ids[ethSyncState]))
 
+proc queryMaxPriorityFeePerGas(ud: RootRef, params: Args, parent: Node): RespResult {.apiPragma.} =
+  # TODO: stub, missing impl
+  err("not implemented")
+
+proc queryChainId(ud: RootRef, params: Args, parent: Node): RespResult {.apiPragma.} =
+  let ctx = GraphqlContextRef(ud)
+  longNode(ctx.chainDB.config.chainId.uint64)
+
 const queryProcs = {
   "account": queryAccount,
   "block": queryBlock,
@@ -1127,7 +1186,9 @@ const queryProcs = {
   "logs": queryLogs,
   "gasPrice": queryGasPrice,
   "protocolVersion": queryProtocolVersion,
-  "syncing": querySyncing
+  "syncing": querySyncing,
+  "maxPriorityFeePerGas": queryMaxPriorityFeePerGas,
+  "chainID": queryChainId
 }
 
 proc sendRawTransaction(ud: RootRef, params: Args, parent: Node): RespResult {.apiPragma.} =

nimbus/graphql/ethapi.ql

@@ -97,6 +97,12 @@ type Transaction {
   # GasPrice is the price offered to miners for gas, in wei per unit.
   gasPrice: BigInt!
 
+  # MaxFeePerGas is the maximum fee per gas offered to include a transaction, in wei.
+  maxFeePerGas: BigInt
+
+  # MaxPriorityFeePerGas is the maximum miner tip per gas offered to include a transaction, in wei.
+  maxPriorityFeePerGas: BigInt
+
   # Gas is the maximum amount of gas this transaction can consume.
   gas: Long!
 
@@ -124,6 +130,14 @@ type Transaction {
   # will be null.
   cumulativeGasUsed: Long
 
+  # EffectiveGasPrice is actual value per gas deducted from the sender's
+  # account. Before EIP-1559, this is equal to the transaction's gas price.
+  # After EIP-1559, it is baseFeePerGas + min(maxFeePerGas - baseFeePerGas,
+  # maxPriorityFeePerGas). Legacy transactions and EIP-2930 transactions are
+  # coerced into the EIP-1559 format by setting both maxFeePerGas and
+  # maxPriorityFeePerGas as the transaction's gas price.
+  effectiveGasPrice: BigInt
+
   # CreatedContract is the account that was created by a contract creation
   # transaction. If the transaction was not a contract creation transaction,
   # or it has not yet been mined, this field will be null.
@@ -147,6 +161,10 @@ type Transaction {
 
   # EIP 2930: optional access list, null if not present
   accessList: [AccessTuple!]
+
+  # If type == 0, chainID returns null.
+  # If type > 0, chainID returns replay protection chainID
+  chainID: Long
 }
 
 # BlockFilterCriteria encapsulates log filter criteria for a filter applied
@@ -209,6 +227,9 @@ type Block {
   # GasUsed is the amount of gas that was used executing transactions in this block.
   gasUsed: Long!
 
+  # BaseFeePerGas is the fee perunit of gas burned by the protocol in this block.
+  baseFeePerGas: BigInt
+
   # Timestamp is the unix timestamp at which this block was mined.
   timestamp: BigInt!
 
@@ -282,6 +303,12 @@ input CallData {
   # GasPrice is the price, in wei, offered for each unit of gas.
   gasPrice: BigInt
 
+  # MaxFeePerGas is the maximum fee per gas offered, in wei.
+  maxFeePerGas: BigInt
+
+  # MaxPriorityFeePerGas is the maximum miner tip per gas offered, in wei.
+  maxPriorityFeePerGas: BigInt
+
   # Value is the value, in wei, sent along with the call.
   value: BigInt
 
@@ -394,11 +421,18 @@ type Query {
   # ensure a transaction is mined in a timely fashion.
   gasPrice: BigInt!
 
+  # MaxPriorityFeePerGas returns the node's estimate of a gas tip sufficient
+  # to ensure a transaction is mined in a timely fashion.
+  maxPriorityFeePerGas: BigInt!
+
   # ProtocolVersion returns the current wire protocol version number.
   protocolVersion: Int!
 
   # Syncing returns information on the current synchronisation state.
   syncing: SyncState
+
+  # ChainID returns the current chain ID for transaction replay protection.
+  chainID: Long!
 }
 
 type Mutation {

tests/graphql/queries.toml

@@ -45,6 +45,7 @@
   name = "query.block(number)"
   code = """
 {
+  chainID
   block(number: 3) {
     __typename
     number
@@ -68,6 +69,7 @@
     }
     extraData
     gasLimit
+    baseFeePerGas
     gasUsed
     timestamp
     logsBloom
@@ -104,6 +106,7 @@
 """
   result = """
 {
+  "chainID":1,
   "block":{
     "__typename":"Block",
     "number":3,
@@ -127,6 +130,7 @@
     },
     "extraData":"0x42",
     "gasLimit":3141592,
+    "baseFeePerGas":null,
     "gasUsed":21000,
     "timestamp":"0x54c99839",
     "logsBloom":"0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
@@ -203,6 +207,11 @@
         address
         storageKeys
       }
+
+      maxFeePerGas
+      maxPriorityFeePerGas
+      effectiveGasPrice
+      chainID
     }
     transactionAt(index: 0) {
       __typename
@@ -244,7 +253,11 @@
         "s":"0x773806df18e22db29acde1dd96c0418e28738af7f520e5e2c5c673494029e5",
         "v":"0x1b",
         "type":0,
-        "accessList":null
+        "accessList":null,
+        "maxFeePerGas":null,
+        "maxPriorityFeePerGas":null,
+        "effectiveGasPrice":"0x3e8",
+        "chainID":null
       }
     ],
     "transactionAt":{