Added default configuration

Author: Valentin Rodygin

cmd/utils/flags.go

@@ -1446,9 +1446,15 @@ func setMiner(ctx *cli.Context, cfg *miner.Config) {
 
 	cfg.FeeCurrencyDefault = ctx.GlobalFloat64(CeloFeeCurrencyDefault.Name)
 
+	defaultLimits, ok := miner.DefaultFeeCurrencyLimits[getNetworkId(ctx)]
+	if !ok {
+		defaultLimits = make(map[common.Address]float64)
+	}
+
+	cfg.FeeCurrencyLimits = defaultLimits
+
 	if ctx.GlobalIsSet(CeloFeeCurrencyLimits.Name) {
 		feeCurrencyLimits := ctx.GlobalString(CeloFeeCurrencyLimits.Name)
-		cfg.FeeCurrencyLimits = make(map[common.Address]float64)
 
 		for _, entry := range strings.Split(feeCurrencyLimits, ",") {
 			parts := strings.Split(entry, "=")

miner/celo_defaults.go

@@ -0,0 +1,20 @@
+package miner
+
+import (
+	"github.com/celo-org/celo-blockchain/common"
+	"github.com/celo-org/celo-blockchain/params"
+)
+
+// cStables addresses on mainnet
+var cUSD_TOKEN = common.HexToAddress("0x765DE816845861e75A25fCA122bb6898B8B1282a")
+var cEUR_TOKEN = common.HexToAddress("0xD8763CBa276a3738E6DE85b4b3bF5FDed6D6cA73")
+var cREAL_TOKEN = common.HexToAddress("0xe8537a3d056DA446677B9E9d6c5dB704EaAb4787")
+
+// default limits configuration
+var DefaultFeeCurrencyLimits = map[uint64]map[common.Address]float64{
+	params.MainnetNetworkId: {
+		cUSD_TOKEN:  0.9,
+		cEUR_TOKEN:  0.5,
+		cREAL_TOKEN: 0.1,
+	},
+}