mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-10-19 05:39:51 +00:00
e72ed593be
Signed-off-by: Rakshith R <rar@redhat.com>
158 lines
4.6 KiB
Go
158 lines
4.6 KiB
Go
// Copyright (c) 2016 Uber Technologies, Inc.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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package zapcore
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import (
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"fmt"
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"sync"
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"go.uber.org/zap/buffer"
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"go.uber.org/zap/internal/bufferpool"
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)
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var _sliceEncoderPool = sync.Pool{
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New: func() interface{} {
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return &sliceArrayEncoder{elems: make([]interface{}, 0, 2)}
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},
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}
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func getSliceEncoder() *sliceArrayEncoder {
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return _sliceEncoderPool.Get().(*sliceArrayEncoder)
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}
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func putSliceEncoder(e *sliceArrayEncoder) {
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e.elems = e.elems[:0]
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_sliceEncoderPool.Put(e)
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}
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type consoleEncoder struct {
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*jsonEncoder
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}
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// NewConsoleEncoder creates an encoder whose output is designed for human -
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// rather than machine - consumption. It serializes the core log entry data
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// (message, level, timestamp, etc.) in a plain-text format and leaves the
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// structured context as JSON.
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//
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// Note that although the console encoder doesn't use the keys specified in the
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// encoder configuration, it will omit any element whose key is set to the empty
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// string.
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func NewConsoleEncoder(cfg EncoderConfig) Encoder {
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if cfg.ConsoleSeparator == "" {
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// Use a default delimiter of '\t' for backwards compatibility
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cfg.ConsoleSeparator = "\t"
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}
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return consoleEncoder{newJSONEncoder(cfg, true)}
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}
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func (c consoleEncoder) Clone() Encoder {
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return consoleEncoder{c.jsonEncoder.Clone().(*jsonEncoder)}
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}
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func (c consoleEncoder) EncodeEntry(ent Entry, fields []Field) (*buffer.Buffer, error) {
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line := bufferpool.Get()
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// We don't want the entry's metadata to be quoted and escaped (if it's
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// encoded as strings), which means that we can't use the JSON encoder. The
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// simplest option is to use the memory encoder and fmt.Fprint.
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//
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// If this ever becomes a performance bottleneck, we can implement
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// ArrayEncoder for our plain-text format.
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arr := getSliceEncoder()
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if c.TimeKey != "" && c.EncodeTime != nil {
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c.EncodeTime(ent.Time, arr)
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}
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if c.LevelKey != "" && c.EncodeLevel != nil {
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c.EncodeLevel(ent.Level, arr)
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}
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if ent.LoggerName != "" && c.NameKey != "" {
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nameEncoder := c.EncodeName
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if nameEncoder == nil {
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// Fall back to FullNameEncoder for backward compatibility.
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nameEncoder = FullNameEncoder
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}
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nameEncoder(ent.LoggerName, arr)
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}
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if ent.Caller.Defined {
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if c.CallerKey != "" && c.EncodeCaller != nil {
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c.EncodeCaller(ent.Caller, arr)
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}
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if c.FunctionKey != "" {
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arr.AppendString(ent.Caller.Function)
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}
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}
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for i := range arr.elems {
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if i > 0 {
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line.AppendString(c.ConsoleSeparator)
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}
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fmt.Fprint(line, arr.elems[i])
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}
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putSliceEncoder(arr)
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// Add the message itself.
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if c.MessageKey != "" {
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c.addSeparatorIfNecessary(line)
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line.AppendString(ent.Message)
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}
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// Add any structured context.
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c.writeContext(line, fields)
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// If there's no stacktrace key, honor that; this allows users to force
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// single-line output.
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if ent.Stack != "" && c.StacktraceKey != "" {
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line.AppendByte('\n')
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line.AppendString(ent.Stack)
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}
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line.AppendString(c.LineEnding)
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return line, nil
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}
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func (c consoleEncoder) writeContext(line *buffer.Buffer, extra []Field) {
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context := c.jsonEncoder.Clone().(*jsonEncoder)
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defer func() {
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// putJSONEncoder assumes the buffer is still used, but we write out the buffer so
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// we can free it.
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context.buf.Free()
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putJSONEncoder(context)
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}()
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addFields(context, extra)
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context.closeOpenNamespaces()
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if context.buf.Len() == 0 {
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return
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}
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c.addSeparatorIfNecessary(line)
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line.AppendByte('{')
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line.Write(context.buf.Bytes())
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line.AppendByte('}')
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}
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func (c consoleEncoder) addSeparatorIfNecessary(line *buffer.Buffer) {
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if line.Len() > 0 {
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line.AppendString(c.ConsoleSeparator)
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}
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}
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