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43 lines
1.0 KiB
43 lines
1.0 KiB
5 years ago
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// Copyright 2019 fatedier, fatedier@gmail.com
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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 xlog
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import (
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"context"
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)
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type key int
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const (
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xlogKey key = 0
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)
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func NewContext(ctx context.Context, xl *Logger) context.Context {
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return context.WithValue(ctx, xlogKey, xl)
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}
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func FromContext(ctx context.Context) (xl *Logger, ok bool) {
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xl, ok = ctx.Value(xlogKey).(*Logger)
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return
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}
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func FromContextSafe(ctx context.Context) *Logger {
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xl, ok := ctx.Value(xlogKey).(*Logger)
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if !ok {
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xl = New()
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}
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return xl
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}
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