tracer.go 922 B

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  1. // Copyright 2019 fatedier, fatedier@gmail.com
  2. //
  3. // Licensed under the Apache License, Version 2.0 (the "License");
  4. // you may not use this file except in compliance with the License.
  5. // You may obtain a copy of the License at
  6. //
  7. // http://www.apache.org/licenses/LICENSE-2.0
  8. //
  9. // Unless required by applicable law or agreed to in writing, software
  10. // distributed under the License is distributed on an "AS IS" BASIS,
  11. // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12. // See the License for the specific language governing permissions and
  13. // limitations under the License.
  14. package plugin
  15. import (
  16. "context"
  17. )
  18. type key int
  19. const (
  20. reqidKey key = 0
  21. )
  22. func NewReqidContext(ctx context.Context, reqid string) context.Context {
  23. return context.WithValue(ctx, reqidKey, reqid)
  24. }
  25. func GetReqidFromContext(ctx context.Context) string {
  26. ret, _ := ctx.Value(reqidKey).(string)
  27. return ret
  28. }