/
context.go
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/
context.go
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// Copyright 2019 The Protocol Buffers Language Server Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package logging
import (
"context"
"go.uber.org/zap"
)
type ctxKey struct{}
// WithContext returns a context.Context with *zap.Logger as a context value.
func WithContext(ctx context.Context, logger *zap.Logger) context.Context {
return context.WithValue(ctx, ctxKey{}, logger)
}
// FromContext extracts *zap.Logger from a given context.Context and returns it.
func FromContext(ctx context.Context) *zap.Logger {
logger, ok := ctx.Value(ctxKey{}).(*zap.Logger)
if !ok {
return zap.NewNop()
}
return logger
}