78 lines
1.7 KiB
Go
78 lines
1.7 KiB
Go
package cli
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import (
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"emperror.dev/errors"
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"fmt"
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"github.com/apex/log"
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"github.com/apex/log/handlers/cli"
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color2 "github.com/fatih/color"
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"github.com/mattn/go-colorable"
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"io"
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"os"
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"sync"
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"time"
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)
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var Default = New(os.Stderr, true)
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var bold = color2.New(color2.Bold)
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var boldred = color2.New(color2.Bold, color2.FgRed)
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var Strings = [...]string{
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log.DebugLevel: "DEBUG",
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log.InfoLevel: " INFO",
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log.WarnLevel: " WARN",
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log.ErrorLevel: "ERROR",
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log.FatalLevel: "FATAL",
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}
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type Handler struct {
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mu sync.Mutex
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Writer io.Writer
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Padding int
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}
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func New(w io.Writer, useColors bool) *Handler {
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if f, ok := w.(*os.File); ok {
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if useColors {
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return &Handler{Writer: colorable.NewColorable(f), Padding: 2}
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}
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}
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return &Handler{Writer: colorable.NewNonColorable(w), Padding: 2}
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}
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// HandleLog implements log.Handler.
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func (h *Handler) HandleLog(e *log.Entry) error {
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color := cli.Colors[e.Level]
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level := Strings[e.Level]
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names := e.Fields.Names()
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h.mu.Lock()
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defer h.mu.Unlock()
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color.Fprintf(h.Writer, "%s: [%s] %-25s", bold.Sprintf("%*s", h.Padding+1, level), time.Now().Format(time.StampMilli), e.Message)
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for _, name := range names {
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if name == "source" {
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continue
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}
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fmt.Fprintf(h.Writer, " %s=%v", color.Sprint(name), e.Fields.Get(name))
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}
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fmt.Fprintln(h.Writer)
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for _, name := range names {
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if name != "error" {
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continue
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}
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if err, ok := e.Fields.Get("error").(error); ok {
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// Attach the stacktrace if it is missing at this point, but don't point
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// it specifically to this line since that is irrelevant.
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err = errors.WithStackDepthIf(err, 1)
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fmt.Fprintf(h.Writer, "\n%s\n%+v\n\n", boldred.Sprintf("Stacktrace:"), err)
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}
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}
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return nil
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}
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