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tag.go
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tag.go
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// Copyright (C) 2017 Google Inc.
//
// 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 log
import (
"context"
"github.com/google/gapid/core/context/keys"
)
type tagKeyTy string
const tagKey tagKeyTy = "log.tagKey"
// PutTag returns a new context with the tag assigned to w.
func PutTag(ctx context.Context, w string) context.Context {
return keys.WithValue(ctx, tagKey, w)
}
// GetTag returns the Tag assigned to ctx.
func GetTag(ctx context.Context) string {
out, _ := ctx.Value(tagKey).(string)
return out
}