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//nolint: gosec
package main
import (
"fmt"
"math/rand"
"os"
"path/filepath"
"github.com/spf13/cobra"
"github.com/tendermint/tendermint/libs/log"
e2e "github.com/tendermint/tendermint/test/e2e/pkg"
)
const (
randomSeed int64 = 4827085738
)
var logger = log.MustNewDefaultLogger(log.LogFormatPlain, log.LogLevelInfo, false)
func main() {
NewCLI().Run()
}
// CLI is the Cobra-based command-line interface.
type CLI struct {
root *cobra.Command
opts Options
}
// NewCLI sets up the CLI.
func NewCLI() *CLI {
cli := &CLI{}
cli.root = &cobra.Command{
Use: "generator",
Short: "End-to-end testnet generator",
SilenceUsage: true,
SilenceErrors: true, // we'll output them ourselves in Run()
RunE: func(cmd *cobra.Command, args []string) error {
var opts Options
var err error
p2pMode, err := cmd.Flags().GetString("p2p")
if err != nil {
return err
}
switch mode := P2PMode(p2pMode); mode {
case NewP2PMode, LegacyP2PMode, HybridP2PMode, MixedP2PMode:
opts.P2P = mode
default:
return fmt.Errorf("p2p mode must be either new, legacy, hybrid or mixed got %s", p2pMode)
}
return cli.generate()
},
}
cli.root.PersistentFlags().StringVarP(&cli.opts.Directory, "dir", "d", "", "Output directory for manifests")
_ = cli.root.MarkPersistentFlagRequired("dir")
cli.root.Flags().BoolVarP(&cli.opts.Reverse, "reverse", "r", false, "Reverse sort order")
cli.root.PersistentFlags().IntVarP(&cli.opts.NumGroups, "groups", "g", 0, "Number of groups")
cli.root.PersistentFlags().StringP("p2p", "p", string(MixedP2PMode),
"P2P typology to be generated [\"new\", \"legacy\", \"hybrid\" or \"mixed\" ]")
cli.root.PersistentFlags().IntVarP(&cli.opts.MinNetworkSize, "min-size", "", 1,
"Minimum network size (nodes)")
cli.root.PersistentFlags().IntVarP(&cli.opts.MaxNetworkSize, "max-size", "", 0,
"Maxmum network size (nodes), 0 is unlimited")
return cli
}
// generate generates manifests in a directory.
func (cli *CLI) generate() error {
err := os.MkdirAll(cli.opts.Directory, 0755)
if err != nil {
return err
}
manifests, err := Generate(rand.New(rand.NewSource(randomSeed)), cli.opts)
if err != nil {
return err
}
switch {
case cli.opts.NumGroups <= 0:
e2e.SortManifests(manifests, cli.opts.Reverse)
if err := e2e.WriteManifests(filepath.Join(cli.opts.Directory, "gen"), manifests); err != nil {
return err
}
default:
groupManifests := e2e.SplitGroups(cli.opts.NumGroups, manifests)
for idx, gm := range groupManifests {
e2e.SortManifests(gm, cli.opts.Reverse)
prefix := filepath.Join(cli.opts.Directory, fmt.Sprintf("gen-group%02d", idx))
if err := e2e.WriteManifests(prefix, gm); err != nil {
return err
}
}
}
return nil
}
// Run runs the CLI.
func (cli *CLI) Run() {
if err := cli.root.Execute(); err != nil {
logger.Error(err.Error())
os.Exit(1)
}
}