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package metrics
import (
"errors"
"math"
opservice "github.com/ethereum-optimism/optimism/op-service"
"github.com/urfave/cli"
)
const (
EnabledFlagName = "metrics.enabled"
ListenAddrFlagName = "metrics.addr"
PortFlagName = "metrics.port"
)
func CLIFlags(envPrefix string) []cli.Flag {
return []cli.Flag{
cli.BoolFlag{
Name: EnabledFlagName,
Usage: "Enable the metrics server",
EnvVar: opservice.PrefixEnvVar(envPrefix, "METRICS_ENABLED"),
},
cli.StringFlag{
Name: ListenAddrFlagName,
Usage: "Metrics listening address",
Value: "0.0.0.0",
EnvVar: opservice.PrefixEnvVar(envPrefix, "METRICS_ADDR"),
},
cli.IntFlag{
Name: PortFlagName,
Usage: "Metrics listening port",
Value: 7300,
EnvVar: opservice.PrefixEnvVar(envPrefix, "METRICS_PORT"),
},
}
}
type CLIConfig struct {
Enabled bool
ListenAddr string
ListenPort int
}
func (m CLIConfig) Check() error {
if !m.Enabled {
return nil
}
if m.ListenPort < 0 || m.ListenPort > math.MaxUint16 {
return errors.New("invalid metrics port")
}
return nil
}
func ReadCLIConfig(ctx *cli.Context) CLIConfig {
return CLIConfig{
Enabled: ctx.GlobalBool(EnabledFlagName),
ListenAddr: ctx.GlobalString(ListenAddrFlagName),
ListenPort: ctx.GlobalInt(PortFlagName),
}
}
func ReadLocalCLIConfig(ctx *cli.Context) CLIConfig {
return CLIConfig{
Enabled: ctx.Bool(EnabledFlagName),
ListenAddr: ctx.String(ListenAddrFlagName),
ListenPort: ctx.Int(PortFlagName),
}
}