add log.pid to enable showing pid in log (#10722)

* show pid in log

* add Pid to cli config

op-service/log/cli.go

@@ -20,6 +20,7 @@ const (
  LevelFlagName = "log.level"
  FormatFlagName = "log.format"
  ColorFlagName = "log.color"
+ PidFlagName = "log.pid"
 )
 
 func CLIFlags(envPrefix string) []cli.Flag {
@@ -51,6 +52,12 @@ func CLIFlagsWithCategory(envPrefix string, category string) []cli.Flag {
  EnvVars: opservice.PrefixEnvVar(envPrefix, "LOG_COLOR"),
  Category: category,
  },
+ &cli.BoolFlag{
+ Name: PidFlagName,
+ Usage: "Show pid in the log",
+ EnvVars: opservice.PrefixEnvVar(envPrefix, "LOG_PID"),
+ Category: category,
+ },
  }
 }
 
@@ -187,6 +194,7 @@ type CLIConfig struct {
  Level slog.Level
  Color bool
  Format FormatType
+ Pid bool
 }
 
 // AppOut returns an io.Writer to write app output to, like logs.
@@ -208,7 +216,11 @@ func NewLogHandler(wr io.Writer, cfg CLIConfig) slog.Handler {
 // The log handler of the logger is a LvlSetter, i.e. the log level can be changed as needed.
 func NewLogger(wr io.Writer, cfg CLIConfig) log.Logger {
  h := NewLogHandler(wr, cfg)
- return log.NewLogger(h)
+ l := log.NewLogger(h)
+ if cfg.Pid {
+ l = l.With("pid", os.Getpid())
+ }
+ return l
 }
 
 // SetGlobalLogHandler sets the log handles as the handler of the global default logger.
@@ -237,5 +249,6 @@ func ReadCLIConfig(ctx *cli.Context) CLIConfig {
  if ctx.IsSet(ColorFlagName) {
  cfg.Color = ctx.Bool(ColorFlagName)
  }
+ cfg.Pid = ctx.Bool(PidFlagName)
  return cfg
 }