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deferred_with.go
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deferred_with.go
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// Copyright (c) 2023 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zapcore
import "sync"
type deferredWithCore struct {
Core
sync.Once
fields []Field
}
var (
_ Core = (*deferredWithCore)(nil)
_ leveledEnabler = (*deferredWithCore)(nil)
)
// NewDeferredWith wraps a Core with a "lazy" core that will.
// only execute With operations if the logger is actually used
func NewDeferredWith(core Core, fields []Field) *deferredWithCore {
return &deferredWithCore{
Core: core,
fields: fields,
}
}
func (d *deferredWithCore) initOnce() {
d.Once.Do(func() {
d.Core = d.Core.With(d.fields)
})
}
func (d *deferredWithCore) With(fields []Field) Core {
d.initOnce()
return d.Core.With(fields)
}
func (d *deferredWithCore) Check(e Entry, ce *CheckedEntry) *CheckedEntry {
d.initOnce()
return d.Core.Check(e, ce)
}
func (d *deferredWithCore) Write(e Entry, fields []Field) error {
d.initOnce()
return d.Core.Write(e, fields)
}
func (d *deferredWithCore) Sync() error {
d.initOnce()
return d.Core.Sync()
}
func (d *deferredWithCore) Enabled(l Level) bool {
d.initOnce()
return d.Core.Enabled(l)
}
func (d *deferredWithCore) Level() Level {
d.initOnce()
return LevelOf(d.Core)
}