fix(server): properly parse multiple gas config (backport #18537)

CHANGELOG.md

@@ -43,6 +43,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ### Bug Fixes
 
+* (server) [#18537](https://github.com/cosmos/cosmos-sdk/pull/18537) Fix panic when defining minimum gas config as `100stake;100uatom`. Use a `,` delimiter instead of `;`. Fixes the server config getter to use the correct delimiter.
 * (client/tx) [#18472](https://github.com/cosmos/cosmos-sdk/pull/18472) Utilizes the correct Pubkey when simulating a transaction.
 
 ## [v0.47.6](https://github.com/cosmos/cosmos-sdk/releases/tag/v0.47.6) - 2023-11-14

server/README.md

@@ -74,26 +74,12 @@ the viper literal and passed to the application construction.
 Example:
 
 ```go
-func newApp(logger log.Logger, db dbm.DB, traceStore io.Writer, appOpts server.AppOptions) server.Application {
-	var cache sdk.MultiStorePersistentCache
-
-	if cast.ToBool(appOpts.Get(server.FlagInterBlockCache)) {
-		cache = store.NewCommitKVStoreCacheManager()
-	}
-
-	pruningOpts, err := server.GetPruningOptionsFromFlags(appOpts)
-	if err != nil {
-		panic(err)
-	}
-
+func newApp(logger log.Logger, db dbm.DB, traceStore io.Writer, appOpts servertypes.AppOptions) servertypes.Application {
+	baseappOptions := server.DefaultBaseappOptions(appOpts)
 	return simapp.NewSimApp(
 		logger, db, traceStore, true,
-		baseapp.SetPruning(pruningOpts),
-		baseapp.SetMinGasPrices(cast.ToString(appOpts.Get(server.FlagMinGasPrices))),
-		baseapp.SetHaltHeight(cast.ToUint64(appOpts.Get(server.FlagHaltHeight))),
-		baseapp.SetHaltTime(cast.ToUint64(appOpts.Get(server.FlagHaltTime))),
-		baseapp.SetInterBlockCache(cache),
-		baseapp.SetTrace(cast.ToBool(appOpts.Get(server.FlagTrace))),
+		appOpts,
+		baseappOptions...,
 	)
 }
 ```

server/config/config.go

@@ -3,7 +3,6 @@ package config
 import (
 	"fmt"
 	"math"
-	"strings"
 
 	"github.com/spf13/viper"
 
@@ -264,23 +263,15 @@ func (c *Config) SetMinGasPrices(gasPrices sdk.DecCoins) {
 	c.MinGasPrices = gasPrices.String()
 }
 
-// GetMinGasPrices returns the validator's minimum gas prices based on the set
-// configuration.
+// GetMinGasPrices returns the validator's minimum gas prices based on the set configuration.
 func (c *Config) GetMinGasPrices() sdk.DecCoins {
 	if c.MinGasPrices == "" {
 		return sdk.DecCoins{}
 	}
 
-	gasPricesStr := strings.Split(c.MinGasPrices, ";")
-	gasPrices := make(sdk.DecCoins, len(gasPricesStr))
-
-	for i, s := range gasPricesStr {
-		gasPrice, err := sdk.ParseDecCoin(s)
-		if err != nil {
-			panic(fmt.Errorf("failed to parse minimum gas price coin (%s): %s", s, err))
-		}
-
-		gasPrices[i] = gasPrice
+	gasPrices, err := sdk.ParseDecCoins(c.MinGasPrices)
+	if err != nil {
+		panic(fmt.Sprintf("invalid minimum gas prices: %v", err))
 	}
 
 	return gasPrices

server/config/config_test.go

@@ -17,10 +17,18 @@ func TestDefaultConfig(t *testing.T) {
 	require.True(t, cfg.GetMinGasPrices().IsZero())
 }
 
-func TestSetMinimumFees(t *testing.T) {
+func TestGetAndSetMinimumGas(t *testing.T) {
 	cfg := DefaultConfig()
-	cfg.SetMinGasPrices(sdk.DecCoins{sdk.NewInt64DecCoin("foo", 5)})
+
+	input := sdk.DecCoins{sdk.NewInt64DecCoin("foo", 5)}
+	cfg.SetMinGasPrices(input)
 	require.Equal(t, "5.000000000000000000foo", cfg.MinGasPrices)
+	require.EqualValues(t, cfg.GetMinGasPrices(), input)
+
+	input = sdk.DecCoins{sdk.NewInt64DecCoin("bar", 1), sdk.NewInt64DecCoin("foo", 5)}
+	cfg.SetMinGasPrices(input)
+	require.Equal(t, "1.000000000000000000bar,5.000000000000000000foo", cfg.MinGasPrices)
+	require.EqualValues(t, cfg.GetMinGasPrices(), input)
 }
 
 func TestIndexEventsMarshalling(t *testing.T) {

server/config/toml.go

@@ -18,7 +18,7 @@ const DefaultConfigTemplate = `# This is a TOML config file.
 
 # The minimum gas prices a validator is willing to accept for processing a
 # transaction. A transaction's fees must meet the minimum of any denomination
-# specified in this config (e.g. 0.25token1;0.0001token2).
+# specified in this config (e.g. 0.25token1,0.0001token2).
 minimum-gas-prices = "{{ .BaseConfig.MinGasPrices }}"
 
 # default: the last 362880 states are kept, pruning at 10 block intervals