io.opentracing.propagation

Interface TextMapExtract

All Superinterfaces:

Iterable<Map.Entry<String,String>>

All Known Subinterfaces:

TextMap

All Known Implementing Classes:

TextMapAdapter, TextMapExtractAdapter

public interface TextMapExtract
extends Iterable<Map.Entry<String,String>>

TextMapExtract is a built-in carrier for Tracer.extract(io.opentracing.propagation.Format<C>, C) only. TextMapExtract implementations allows Tracers to write key:value String pairs to arbitrary underlying sources of data.

See Also:

Tracer.extract(Format, Object)

Method Summary

Modifier and Type	Method and Description
Iterator<Map.Entry<String,String>>	iterator() Gets an iterator over arbitrary key:value pairs from the TextMapReader.

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Method Detail

iterator

Iterator<Map.Entry<String,String>> iterator()

Gets an iterator over arbitrary key:value pairs from the TextMapReader.

Specified by:

iterator in interface Iterable<Map.Entry<String,String>>

Returns:

entries in the TextMap backing store; note that for some Formats, the iterator may include entries that were never injected by a Tracer implementation (e.g., unrelated HTTP headers)

See Also:

Tracer.extract(Format, Object), Format.Builtin.TEXT_MAP, Format.Builtin.HTTP_HEADERS