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106 lines
2.6 KiB
Go
106 lines
2.6 KiB
Go
// Copyright 2023 The Hugo Authors. All rights reserved.
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// Some functions in this file (see comments) is based on the Go source code,
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// copyright The Go Authors and governed by a BSD-style license.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// package loggers contains some basic logging setup.
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package loggers
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import (
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"fmt"
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"io"
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"strings"
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"sync"
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"github.com/bep/logg"
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"github.com/fatih/color"
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)
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var bold = color.New(color.Bold)
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// levelColor mapping.
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var levelColor = [...]*color.Color{
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logg.LevelDebug: color.New(color.FgWhite),
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logg.LevelInfo: color.New(color.FgBlue),
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logg.LevelWarn: color.New(color.FgYellow),
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logg.LevelError: color.New(color.FgRed),
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}
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// levelString mapping.
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var levelString = [...]string{
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logg.LevelDebug: "DEBUG",
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logg.LevelInfo: "INFO ",
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logg.LevelWarn: "WARN ",
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logg.LevelError: "ERROR",
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}
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// newDefaultHandler handler.
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func newDefaultHandler(outWriter, errWriter io.Writer) logg.Handler {
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return &defaultHandler{
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outWriter: outWriter,
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errWriter: errWriter,
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Padding: 0,
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}
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}
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// Default Handler implementation.
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// Based on https://github.com/apex/log/blob/master/handlers/cli/cli.go
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type defaultHandler struct {
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mu sync.Mutex
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outWriter io.Writer // Defaults to os.Stdout.
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errWriter io.Writer // Defaults to os.Stderr.
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Padding int
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}
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// HandleLog implements logg.Handler.
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func (h *defaultHandler) HandleLog(e *logg.Entry) error {
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color := levelColor[e.Level]
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level := levelString[e.Level]
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h.mu.Lock()
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defer h.mu.Unlock()
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var w io.Writer
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if e.Level > logg.LevelInfo {
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w = h.errWriter
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} else {
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w = h.outWriter
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}
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var prefix string
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for _, field := range e.Fields {
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if field.Name == FieldNameCmd {
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prefix = fmt.Sprint(field.Value)
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break
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}
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}
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if prefix != "" {
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prefix = prefix + ": "
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}
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color.Fprintf(w, "%s %s%s", fmt.Sprintf("%*s", h.Padding+1, level), color.Sprint(prefix), e.Message)
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for _, field := range e.Fields {
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if strings.HasPrefix(field.Name, reservedFieldNamePrefix) {
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continue
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}
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fmt.Fprintf(w, " %s %v", color.Sprint(field.Name), field.Value)
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}
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fmt.Fprintln(w)
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return nil
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}
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