PIP-35 for amoy: enforce 25gwei gas config for amoy for erigon 2 (#11078)

Cherry picks #11077

> A followup PR to #10119
which sets the fields `txpool.pricelimit`, `miner.gasprice` and
`gpo.ignoreprice` to 25gwei only for polygon amoy network.
> Upon sufficient announcements, it will be generalised to all polygon
chains later.

Author: manav2401

erigon-lib/txpool/txpoolcfg/txpoolcfg.go

@@ -30,7 +30,7 @@ import (
 )
 
 // BorDefaultTxPoolPriceLimit defines the minimum gas price limit for bor to enforce txs acceptance into the pool.
-const BorDefaultTxPoolPriceLimit = 30 * common.GWei
+const BorDefaultTxPoolPriceLimit = 25 * common.GWei
 
 type Config struct {
 	DBDir               string

eth/backend.go

@@ -1649,17 +1649,19 @@ func (s *Ethereum) DataDir() string {
 	return s.config.Dirs.DataDir
 }
 
-// setBorDefaultMinerGasPrice enforces Miner.GasPrice to be equal to BorDefaultMinerGasPrice (30gwei by default)
+// setBorDefaultMinerGasPrice enforces Miner.GasPrice to be equal to BorDefaultMinerGasPrice (25gwei by default)
+// only for polygon amoy network.
 func setBorDefaultMinerGasPrice(chainConfig *chain.Config, config *ethconfig.Config, logger log.Logger) {
-	if chainConfig.Bor != nil && (config.Miner.GasPrice == nil || config.Miner.GasPrice.Cmp(ethconfig.BorDefaultMinerGasPrice) != 0) {
+	if chainConfig.Bor != nil && chainConfig.ChainID.Cmp(params.AmoyChainConfig.ChainID) == 0 && (config.Miner.GasPrice == nil || config.Miner.GasPrice.Cmp(ethconfig.BorDefaultMinerGasPrice) != 0) {
 		logger.Warn("Sanitizing invalid bor miner gas price", "provided", config.Miner.GasPrice, "updated", ethconfig.BorDefaultMinerGasPrice)
 		config.Miner.GasPrice = ethconfig.BorDefaultMinerGasPrice
 	}
 }
 
-// setBorDefaultTxPoolPriceLimit enforces MinFeeCap to be equal to BorDefaultTxPoolPriceLimit  (30gwei by default)
+// setBorDefaultTxPoolPriceLimit enforces MinFeeCap to be equal to BorDefaultTxPoolPriceLimit (25gwei by default)
+// only for polygon amoy network.
 func setBorDefaultTxPoolPriceLimit(chainConfig *chain.Config, config txpoolcfg.Config, logger log.Logger) {
-	if chainConfig.Bor != nil && config.MinFeeCap != txpoolcfg.BorDefaultTxPoolPriceLimit {
+	if chainConfig.Bor != nil && chainConfig.ChainID.Cmp(params.AmoyChainConfig.ChainID) == 0 && config.MinFeeCap != txpoolcfg.BorDefaultTxPoolPriceLimit {
 		logger.Warn("Sanitizing invalid bor min fee cap", "provided", config.MinFeeCap, "updated", txpoolcfg.BorDefaultTxPoolPriceLimit)
 		config.MinFeeCap = txpoolcfg.BorDefaultTxPoolPriceLimit
 	}

eth/ethconfig/config.go

@@ -46,7 +46,7 @@ import (
 )
 
 // BorDefaultMinerGasPrice defines the minimum gas price for bor validators to mine a transaction.
-var BorDefaultMinerGasPrice = big.NewInt(30 * params.GWei)
+var BorDefaultMinerGasPrice = big.NewInt(25 * params.GWei)
 
 // FullNodeGPO contains default gasprice oracle settings for full node.
 var FullNodeGPO = gaspricecfg.Config{

eth/gasprice/gasprice.go

@@ -26,6 +26,7 @@ import (
 	"github.com/ledgerwatch/erigon-lib/chain"
 	libcommon "github.com/ledgerwatch/erigon-lib/common"
 	"github.com/ledgerwatch/erigon/eth/gasprice/gaspricecfg"
+	"github.com/ledgerwatch/erigon/params"
 	"github.com/ledgerwatch/log/v3"
 
 	"github.com/ledgerwatch/erigon/core/types"
@@ -284,9 +285,10 @@ func (s *sortingHeap) Pop() interface{} {
 	return x
 }
 
-// setBorDefaultGpoIgnorePrice enforces gpo IgnorePrice to be equal to BorDefaultGpoIgnorePrice  (30gwei by default)
+// setBorDefaultGpoIgnorePrice enforces gpo IgnorePrice to be equal to BorDefaultGpoIgnorePrice (25gwei by default)
+// only for polygon amoy network.
 func setBorDefaultGpoIgnorePrice(chainConfig *chain.Config, gasPriceConfig gaspricecfg.Config) {
-	if chainConfig.Bor != nil && gasPriceConfig.IgnorePrice != gaspricecfg.BorDefaultGpoIgnorePrice {
+	if chainConfig.Bor != nil && chainConfig.ChainID.Cmp(params.AmoyChainConfig.ChainID) == 0 && gasPriceConfig.IgnorePrice != gaspricecfg.BorDefaultGpoIgnorePrice {
 		log.Warn("Sanitizing invalid bor gasprice oracle ignore price", "provided", gasPriceConfig.IgnorePrice, "updated", gaspricecfg.BorDefaultGpoIgnorePrice)
 		gasPriceConfig.IgnorePrice = gaspricecfg.BorDefaultGpoIgnorePrice
 	}

eth/gasprice/gaspricecfg/gaspricecfg.go

@@ -9,7 +9,7 @@ import (
 var DefaultIgnorePrice = big.NewInt(2 * params.Wei)
 
 // BorDefaultGpoIgnorePrice defines the minimum gas price below which bor gpo will ignore transactions.
-var BorDefaultGpoIgnorePrice = big.NewInt(30 * params.Wei)
+var BorDefaultGpoIgnorePrice = big.NewInt(25 * params.Wei)
 
 var (
 	DefaultMaxPrice = big.NewInt(500 * params.GWei)