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73 lines
2.6 KiB
Go
73 lines
2.6 KiB
Go
// The MIT License
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//
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// Copyright (c) 2020 Temporal Technologies Inc. All rights reserved.
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//
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// Copyright (c) 2020 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 log
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// WithLogger is an interface that prepend every log entry with keyvals.
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type WithLogger interface {
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With(keyvals ...interface{}) Logger
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}
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// With returns Logger instance that prepend every log entry with keyvals. If logger implements WithLogger it is used, otherwise every log call will be intercepted.
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func With(logger Logger, keyvals ...interface{}) Logger {
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if wl, ok := logger.(WithLogger); ok {
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return wl.With(keyvals...)
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}
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return newWithLogger(logger, keyvals...)
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}
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type withLogger struct {
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logger Logger
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keyvals []interface{}
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}
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func newWithLogger(logger Logger, keyvals ...interface{}) *withLogger {
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return &withLogger{logger: logger, keyvals: keyvals}
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}
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func (l *withLogger) prependKeyvals(keyvals []interface{}) []interface{} {
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return append(l.keyvals, keyvals...)
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}
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// Debug writes message to the log.
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func (l *withLogger) Debug(msg string, keyvals ...interface{}) {
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l.logger.Debug(msg, l.prependKeyvals(keyvals)...)
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}
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// Info writes message to the log.
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func (l *withLogger) Info(msg string, keyvals ...interface{}) {
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l.logger.Info(msg, l.prependKeyvals(keyvals)...)
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}
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// Warn writes message to the log.
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func (l *withLogger) Warn(msg string, keyvals ...interface{}) {
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l.logger.Warn(msg, l.prependKeyvals(keyvals)...)
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}
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// Error writes message to the log.
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func (l *withLogger) Error(msg string, keyvals ...interface{}) {
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l.logger.Error(msg, l.prependKeyvals(keyvals)...)
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}
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