laconicd-deprecated/server/util.go
Federico Kunze 5a3d514ba0
conflicts
2021-04-17 12:00:07 +02:00

200 lines
5.7 KiB
Go

package server
import (
"fmt"
"io"
"os"
"path"
"path/filepath"
"strings"
"time"
"github.com/rs/zerolog"
"github.com/spf13/cobra"
"github.com/spf13/viper"
tmcfg "github.com/tendermint/tendermint/config"
dbm "github.com/tendermint/tm-db"
"github.com/cosmos/cosmos-sdk/client/flags"
sdkserver "github.com/cosmos/cosmos-sdk/server"
servertypes "github.com/cosmos/cosmos-sdk/server/types"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/version"
"github.com/cosmos/ethermint/server/config"
)
// InterceptConfigsPreRunHandler performs a pre-run function for the root daemon
// application command. It will create a Viper literal and a default server
// Context. The server Tendermint configuration will either be read and parsed
// or created and saved to disk, where the server Context is updated to reflect
// the Tendermint configuration. The Viper literal is used to read and parse
// the application configuration. Command handlers can fetch the server Context
// to get the Tendermint configuration or to get access to Viper.
func InterceptConfigsPreRunHandler(cmd *cobra.Command) error {
serverCtx := sdkserver.NewDefaultContext()
// Get the executable name and configure the viper instance so that environmental
// variables are checked based off that name. The underscore character is used
// as a separator
executableName, err := os.Executable()
if err != nil {
return err
}
basename := path.Base(executableName)
// Configure the viper instance
if err := serverCtx.Viper.BindPFlags(cmd.Flags()); err != nil {
return err
}
if err := serverCtx.Viper.BindPFlags(cmd.PersistentFlags()); err != nil {
return err
}
serverCtx.Viper.SetEnvPrefix(basename)
serverCtx.Viper.SetEnvKeyReplacer(strings.NewReplacer(".", "_", "-", "_"))
serverCtx.Viper.AutomaticEnv()
// intercept configuration files, using both Viper instances separately
config, err := interceptConfigs(serverCtx.Viper)
if err != nil {
return err
}
// return value is a tendermint configuration object
serverCtx.Config = config
var logWriter io.Writer
if strings.ToLower(serverCtx.Viper.GetString(flags.FlagLogFormat)) == tmcfg.LogFormatPlain {
logWriter = zerolog.ConsoleWriter{Out: os.Stderr}
} else {
logWriter = os.Stderr
}
logLvlStr := serverCtx.Viper.GetString(flags.FlagLogLevel)
logLvl, err := zerolog.ParseLevel(logLvlStr)
if err != nil {
return fmt.Errorf("failed to parse log level (%s): %w", logLvlStr, err)
}
serverCtx.Logger = sdkserver.ZeroLogWrapper{
Logger: zerolog.New(logWriter).Level(logLvl).With().Timestamp().Logger(),
}
return sdkserver.SetCmdServerContext(cmd, serverCtx)
}
// interceptConfigs parses and updates a Tendermint configuration file or
// creates a new one and saves it. It also parses and saves the application
// configuration file. The Tendermint configuration file is parsed given a root
// Viper object, whereas the application is parsed with the private package-aware
// viperCfg object.
func interceptConfigs(rootViper *viper.Viper) (*tmcfg.Config, error) {
rootDir := rootViper.GetString(flags.FlagHome)
configPath := filepath.Join(rootDir, "config")
configFile := filepath.Join(configPath, "config.toml")
conf := tmcfg.DefaultConfig()
switch _, err := os.Stat(configFile); {
case os.IsNotExist(err):
tmcfg.EnsureRoot(rootDir)
if err = conf.ValidateBasic(); err != nil {
return nil, fmt.Errorf("error in config file: %v", err)
}
conf.RPC.PprofListenAddress = "localhost:6060"
conf.P2P.RecvRate = 5120000
conf.P2P.SendRate = 5120000
conf.Consensus.TimeoutCommit = 5 * time.Second
tmcfg.WriteConfigFile(configFile, conf)
case err != nil:
return nil, err
default:
rootViper.SetConfigType("toml")
rootViper.SetConfigName("config")
rootViper.AddConfigPath(configPath)
if err := rootViper.ReadInConfig(); err != nil {
return nil, fmt.Errorf("failed to read in app.toml: %w", err)
}
}
// Read into the configuration whatever data the viper instance has for it
// This may come from the configuration file above but also any of the other sources
// viper uses
if err := rootViper.Unmarshal(conf); err != nil {
return nil, err
}
conf.SetRoot(rootDir)
appConfigFilePath := filepath.Join(configPath, "app.toml")
if _, err := os.Stat(appConfigFilePath); os.IsNotExist(err) {
appConf, err := config.ParseConfig(rootViper)
if err != nil {
return nil, fmt.Errorf("failed to parse app.toml: %w", err)
}
config.WriteConfigFile(appConfigFilePath, appConf)
}
rootViper.SetConfigType("toml")
rootViper.SetConfigName("app")
rootViper.AddConfigPath(configPath)
if err := rootViper.ReadInConfig(); err != nil {
return nil, fmt.Errorf("failed to read in app.toml: %w", err)
}
return conf, nil
}
// AddCommands adds the server commands
func AddCommands(
rootCmd *cobra.Command, defaultNodeHome string,
appCreator servertypes.AppCreator, appExport servertypes.AppExporter, addStartFlags servertypes.ModuleInitFlags,
) {
tendermintCmd := &cobra.Command{
Use: "tendermint",
Short: "Tendermint subcommands",
}
tendermintCmd.AddCommand(
sdkserver.ShowNodeIDCmd(),
sdkserver.ShowValidatorCmd(),
sdkserver.ShowAddressCmd(),
sdkserver.VersionCmd(),
)
startCmd := StartCmd(appCreator, defaultNodeHome)
addStartFlags(startCmd)
rootCmd.AddCommand(
startCmd,
sdkserver.UnsafeResetAllCmd(),
flags.LineBreak,
tendermintCmd,
sdkserver.ExportCmd(appExport, defaultNodeHome),
flags.LineBreak,
version.NewVersionCommand(),
)
}
func openDB(rootDir string) (dbm.DB, error) {
dataDir := filepath.Join(rootDir, "data")
return sdk.NewLevelDB("application", dataDir)
}
func openTraceWriter(traceWriterFile string) (w io.Writer, err error) {
if traceWriterFile == "" {
return
}
return os.OpenFile(
traceWriterFile,
os.O_WRONLY|os.O_APPEND|os.O_CREATE,
0666,
)
}