Package io.micrometer.observation.transport

Interface Propagator.Getter<C>

Type Parameters:
C - carrier of propagation fields, such as an http request.
Enclosing interface:
Propagator
public static interface Propagator.Getter<C>
Interface that allows to read propagated fields from a carrier.

Getter is stateless and allows to be saved as a constant to avoid runtime allocations.

Since:
1.10.0

  • Method Summary

    Modifier and Type
    Method
    Description
    String
    get(C carrier, String key)
    Returns the first value of the given propagation key or returns null.

  • Method Details

    • get

      @Nullable String get(C carrier, String key)
      Returns the first value of the given propagation key or returns null.
      Parameters:
      carrier - carrier of propagation fields, such as an http request.
      key - the key of the field.
      Returns:
      the first value of the given propagation key or returns null.