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package rpc
import (
"errors"
"math"
opservice "github.com/ethereum-optimism/optimism/op-service"
"github.com/urfave/cli/v2"
)
const (
ListenAddrFlagName = "rpc.addr"
PortFlagName = "rpc.port"
EnableAdminFlagName = "rpc.enable-admin"
)
var ErrInvalidPort = errors.New("invalid RPC port")
func CLIFlags(envPrefix string) []cli.Flag {
return []cli.Flag{
&cli.StringFlag{
Name: ListenAddrFlagName,
Usage: "rpc listening address",
Value: "0.0.0.0", // TODO: Switch to 127.0.0.1
EnvVars: opservice.PrefixEnvVar(envPrefix, "RPC_ADDR"),
},
&cli.IntFlag{
Name: PortFlagName,
Usage: "rpc listening port",
Value: 8545,
EnvVars: opservice.PrefixEnvVar(envPrefix, "RPC_PORT"),
},
&cli.BoolFlag{
Name: EnableAdminFlagName,
Usage: "Enable the admin API",
EnvVars: opservice.PrefixEnvVar(envPrefix, "RPC_ENABLE_ADMIN"),
},
}
}
type CLIConfig struct {
ListenAddr string
ListenPort int
EnableAdmin bool
}
func DefaultCLIConfig() CLIConfig {
return CLIConfig{
ListenAddr: "0.0.0.0",
ListenPort: 8545,
EnableAdmin: false,
}
}
func (c CLIConfig) Check() error {
if c.ListenPort < 0 || c.ListenPort > math.MaxUint16 {
return ErrInvalidPort
}
return nil
}
func ReadCLIConfig(ctx *cli.Context) CLIConfig {
return CLIConfig{
ListenAddr: ctx.String(ListenAddrFlagName),
ListenPort: ctx.Int(PortFlagName),
EnableAdmin: ctx.Bool(EnableAdminFlagName),
}
}