87 lines
2.1 KiB
Go
87 lines
2.1 KiB
Go
// Copyright 2023 Martin Riedl
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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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//
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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 golog
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import (
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"fmt"
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"strings"
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"time"
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)
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type FormatterKeyValue struct {
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TimeFormat string
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builder strings.Builder
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isFirstKVWritten bool
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}
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func NewFormatterKeyValue() *FormatterKeyValue {
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return &FormatterKeyValue{
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TimeFormat: time.RFC3339,
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}
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}
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func (formatter *FormatterKeyValue) Begin(entry *Entry) {
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// reset builder
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formatter.builder.Reset()
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// add timestamp
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formatter.addKV("time", entry.Time.Format(formatter.TimeFormat))
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// add loglevel
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formatter.addKV("level", entry.Level.String())
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}
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func (formatter *FormatterKeyValue) Process(entry *Entry) {
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// add message
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formatter.addKV("message", entry.Message)
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// add call stack
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if len(entry.CallStack) > 0 {
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caller := entry.CallStack[0]
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formatter.addKV("file", fmt.Sprintf("%s:%d", caller.File, caller.Line))
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formatter.addKV("function", caller.Function)
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}
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// add additional fields
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for _, content := range entry.Content {
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formatter.addKV(content.Key, content.Value)
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}
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}
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func (formatter *FormatterKeyValue) addKV(key string, value any) {
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// convert any to string
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val := fmt.Sprintf("%v", value)
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// check, if value should be escaped
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if strings.ContainsAny(val, " \t\n\r=:\\") {
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val = fmt.Sprintf("%q", val)
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}
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// add space, if required
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if formatter.isFirstKVWritten {
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formatter.builder.WriteString(" ")
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}
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formatter.isFirstKVWritten = true
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// add field
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formatter.builder.WriteString(key)
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formatter.builder.WriteString("=")
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formatter.builder.WriteString(val)
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}
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func (formatter *FormatterKeyValue) End(entry *Entry) []byte {
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// send data
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return []byte(formatter.builder.String())
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}
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