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log.go
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log.go
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package log
import (
"fmt"
"github.com/helmwave/helmwave/pkg/helper"
formatter "github.com/helmwave/logrus-emoji-formatter"
"github.com/mgutz/ansi"
log "github.com/sirupsen/logrus"
"github.com/urfave/cli/v2"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
)
var Default = &Settings{}
// Settings stores configuration for logger.
type Settings struct {
level string
format string
color bool
timestamps bool
}
// Flags returns CLI flags for logger settings.
func (l *Settings) Flags() []cli.Flag {
return []cli.Flag{
&cli.StringFlag{
Name: "log-format",
Usage: "You can set: [ text | json | pad | emoji ]",
Value: "emoji",
EnvVars: []string{"HELMWAVE_LOG_FORMAT"},
Destination: &l.format,
},
&cli.StringFlag{
Name: "log-level",
Usage: "You can set: [ debug | info | warn | fatal | panic | trace ]",
Value: "info",
EnvVars: []string{"HELMWAVE_LOG_LEVEL", "HELMWAVE_LOG_LVL"},
Destination: &l.level,
},
&cli.BoolFlag{
Name: "log-color",
Usage: "on/off color",
Value: true,
EnvVars: []string{"HELMWAVE_LOG_COLOR"},
Destination: &l.color,
},
&cli.BoolFlag{
Name: "log-timestamps",
Usage: "Add timestamps to log messages",
Value: false,
EnvVars: []string{"HELMWAVE_LOG_TIMESTAMPS"},
Destination: &l.timestamps,
},
}
}
// Run initializes logger.
func (l *Settings) Run(c *cli.Context) error {
return l.Init()
}
// Init initializes logger and sets up hacks for other loggers (used by 3rd party libraries).
func (l *Settings) Init() error {
// Skip various low-level k8s client errors
// There are a lot of context deadline errors being logged
utilruntime.ErrorHandlers = []func(error){ //nolint:reassign
logKubernetesClientError,
}
l.setFormat()
return l.setLevel()
}
func (l *Settings) setLevel() error {
level, err := log.ParseLevel(l.level)
if err != nil {
return fmt.Errorf("failed to parse log level %s: %w", l.level, err)
}
log.SetLevel(level)
if level >= log.DebugLevel {
log.SetReportCaller(true)
helper.Helm.Debug = true
}
return nil
}
func (l *Settings) setFormat() {
// Helm diff also use it
ansi.DisableColors(!l.color)
switch l.format {
case "json":
log.SetFormatter(&log.JSONFormatter{
PrettyPrint: true,
})
case "pad":
log.SetFormatter(&log.TextFormatter{
PadLevelText: true,
ForceColors: l.color,
FullTimestamp: l.timestamps,
DisableTimestamp: !l.timestamps,
})
case "emoji":
cfg := &formatter.Config{
Color: l.color,
}
switch {
case !l.color && l.timestamps:
cfg.LogFormat = "[%time%] [%lvl%]: %msg%"
case !l.color:
cfg.LogFormat = "[%lvl%]: %msg%"
case l.timestamps:
cfg.LogFormat = "[%time%] [%emoji% aka %lvl%]: %msg%"
}
log.SetFormatter(cfg)
case "text":
log.SetFormatter(&log.TextFormatter{
ForceColors: l.color,
FullTimestamp: l.timestamps,
DisableTimestamp: !l.timestamps,
})
}
}
func logKubernetesClientError(err error) {
log.WithError(err).Trace("kubernetes client error")
}
func (l *Settings) Format() string {
return l.format
}