github.com/instana/go-sensor@v1.62.2-0.20240520081010-4919868049e1/w3ctrace/parent.go (about)

     1  // (c) Copyright IBM Corp. 2021
     2  // (c) Copyright Instana Inc. 2020
     3  
     4  package w3ctrace
     5  
     6  // Flags contains the trace flags as defined by https://www.w3.org/TR/trace-context/#trace-flags
     7  type Flags struct {
     8  	Sampled bool
     9  }
    10  
    11  // Parent represents trace parent extracted from `traceparent` header
    12  type Parent struct {
    13  	Version  Version
    14  	TraceID  string
    15  	ParentID string
    16  	Flags    Flags
    17  }
    18  
    19  // ParseParent parses the value of `traceparent` header according to the version
    20  // defined in the first field
    21  func ParseParent(s string) (Parent, error) {
    22  	ver, err := ParseVersion(s)
    23  	if err != nil {
    24  		return Parent{}, ErrContextCorrupted
    25  	}
    26  
    27  	return ver.parseParent(s)
    28  }
    29  
    30  // String returns string representation of a trace parent. The returned value is compatible with the
    31  // `traceparent` header format
    32  func (p Parent) String() string {
    33  	return p.Version.formatParent(p)
    34  }