mirror of
https://github.com/gohugoio/hugo.git
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145 lines
3.4 KiB
Go
145 lines
3.4 KiB
Go
// Copyright 2024 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
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import (
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"fmt"
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"strings"
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"sync"
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"github.com/bep/logg"
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"github.com/gohugoio/hugo/common/hashing"
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)
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// PanicOnWarningHook panics on warnings.
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var PanicOnWarningHook = func(e *logg.Entry) error {
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if e.Level != logg.LevelWarn {
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return nil
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}
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panic(e.Message)
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}
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func newLogLevelCounter() *logLevelCounter {
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return &logLevelCounter{
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counters: make(map[logg.Level]int),
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}
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}
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func newLogOnceHandler(threshold logg.Level) *logOnceHandler {
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return &logOnceHandler{
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threshold: threshold,
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seen: make(map[uint64]bool),
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}
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}
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func newStopHandler(h ...logg.Handler) *stopHandler {
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return &stopHandler{
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handlers: h,
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}
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}
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func newSuppressStatementsHandler(statements map[string]bool) *suppressStatementsHandler {
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return &suppressStatementsHandler{
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statements: statements,
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}
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}
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type logLevelCounter struct {
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mu sync.RWMutex
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counters map[logg.Level]int
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}
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func (h *logLevelCounter) HandleLog(e *logg.Entry) error {
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h.mu.Lock()
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defer h.mu.Unlock()
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h.counters[e.Level]++
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return nil
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}
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var errStop = fmt.Errorf("stop")
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type logOnceHandler struct {
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threshold logg.Level
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mu sync.Mutex
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seen map[uint64]bool
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}
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func (h *logOnceHandler) HandleLog(e *logg.Entry) error {
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if e.Level < h.threshold {
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// We typically only want to enable this for warnings and above.
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// The common use case is that many go routines may log the same error.
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return nil
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}
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h.mu.Lock()
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defer h.mu.Unlock()
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hash := hashing.HashUint64(e.Level, e.Message, e.Fields)
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if h.seen[hash] {
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return errStop
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}
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h.seen[hash] = true
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return nil
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}
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func (h *logOnceHandler) reset() {
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h.mu.Lock()
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defer h.mu.Unlock()
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h.seen = make(map[uint64]bool)
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}
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type stopHandler struct {
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handlers []logg.Handler
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}
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// HandleLog implements logg.Handler.
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func (h *stopHandler) HandleLog(e *logg.Entry) error {
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for _, handler := range h.handlers {
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if err := handler.HandleLog(e); err != nil {
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if err == errStop {
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return nil
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}
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return err
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}
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}
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return nil
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}
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type suppressStatementsHandler struct {
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statements map[string]bool
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}
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func (h *suppressStatementsHandler) HandleLog(e *logg.Entry) error {
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for _, field := range e.Fields {
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if field.Name == FieldNameStatementID {
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if h.statements[field.Value.(string)] {
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return errStop
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}
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}
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}
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return nil
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}
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// whiteSpaceTrimmer creates a new log handler that trims whitespace from log messages and string fields.
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func whiteSpaceTrimmer() logg.Handler {
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return logg.HandlerFunc(func(e *logg.Entry) error {
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e.Message = strings.TrimSpace(e.Message)
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for i, field := range e.Fields {
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if s, ok := field.Value.(string); ok {
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e.Fields[i].Value = strings.TrimSpace(s)
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}
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}
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return nil
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})
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}
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