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root.go
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root.go
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/*
Copyright © 2020 Jack Zampolin jack.zampolin@gmail.com
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package cmd
import (
"bufio"
"os"
"strings"
"github.com/cosmos/cosmos-sdk/client/flags"
"github.com/spf13/cobra"
"github.com/spf13/viper"
)
const (
MB = 1048576 // in bytes
)
var (
cfgPath string
homePath string
debug bool
config *Config
defaultHome = os.ExpandEnv("$HOME/.relayer")
// Default identifiers for dummy usage
dcli = "defaultclientid"
dcon = "defaultconnectionid"
dcha = "defaultchannelid"
dpor = "defaultportid"
dord = "ordered"
)
func init() {
cobra.EnableCommandSorting = false
rootCmd.SilenceUsage = true
// Register top level flags --home and --config
// TODO: just rely on homePath and remove the config path arg?
rootCmd.PersistentFlags().StringVar(&homePath, flags.FlagHome, defaultHome, "set home directory")
rootCmd.PersistentFlags().BoolVarP(&debug, "debug", "d", false, "debug output")
rootCmd.PersistentFlags().StringVar(&cfgPath, flagConfig, "config.yaml", "set config file")
if err := viper.BindPFlag(flags.FlagHome, rootCmd.Flags().Lookup(flags.FlagHome)); err != nil {
panic(err)
}
if err := viper.BindPFlag(flagConfig, rootCmd.Flags().Lookup(flagConfig)); err != nil {
panic(err)
}
if err := viper.BindPFlag("debug", rootCmd.Flags().Lookup("debug")); err != nil {
panic(err)
}
// Register subcommands
rootCmd.AddCommand(
configCmd(),
chainsCmd(),
pathsCmd(),
flags.LineBreak,
keysCmd(),
lightCmd(),
flags.LineBreak,
transactionCmd(),
queryCmd(),
startCmd(),
flags.LineBreak,
devCommand(),
testnetsCmd(),
getVersionCmd(),
)
// This is a bit of a cheat :shushing_face:
// cdc = codecstd.MakeCodec(simapp.ModuleBasics)
// appCodec = codecstd.NewAppCodec(cdc)
}
// rootCmd represents the base command when called without any subcommands
var rootCmd = &cobra.Command{
Use: "rly",
Short: "This application relays data between configured IBC enabled chains",
Long: strings.TrimSpace(`The relayer has commands for:
1. Configuration of the Chains and Paths that the relayer with transfer packets over
2. Management of keys and light clients on the local machine that will be used to sign and verify txs
3. Query and transaction functionality for IBC
4. A responsive relaying application that listens on a path
5. Commands to assist with development, testnets, and versioning.
NOTE: Most of the commands have aliases that make typing them much quicker (i.e. 'rly tx', 'rly q', etc...)`),
}
// Execute adds all child commands to the root command and sets flags appropriately.
// This is called by main.main(). It only needs to happen once to the rootCmd.
func Execute() {
rootCmd.PersistentPreRunE = func(_ *cobra.Command, _ []string) error {
// reads `homeDir/config/config.yaml` into `var config *Config` before each command
return initConfig(rootCmd)
}
if err := rootCmd.Execute(); err != nil {
os.Exit(1)
}
}
// readLineFromBuf reads one line from stdin.
func readStdin() (string, error) {
str, err := bufio.NewReader(os.Stdin).ReadString('\n')
return strings.TrimSpace(str), err
}