Package org.springframework.messaging.rsocket

Interface MetadataExtractor

All Known Implementing Classes:
DefaultMetadataExtractor
public interface MetadataExtractor
Strategy to extract a map of value(s) from Payload metadata, which could be composite metadata with multiple entries. Each metadata entry is decoded based on its MimeType and a name is assigned to the decoded value. The resulting name-value pairs can be added to the headers of a Message.
Since:
5.2
Author:
Rossen Stoyanchev
See Also:

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final String
    ROUTE_KEY
    The key to assign to the extracted "route" of the payload.

  • Method Summary

    Modifier and Type
    Method
    Description
    Map<String,Object>
    extract(Payload payload, MimeType metadataMimeType)
    Extract a map of values from the given Payload metadata.

  • Field Details

  • Method Details

    • extract

      Map<String,Object> extract(Payload payload, MimeType metadataMimeType)
      Extract a map of values from the given Payload metadata. The Payload "route", if present, should be saved under ROUTE_KEY.
      Parameters:
      payload - the payload whose metadata should be read
      metadataMimeType - the metadata MimeType for the connection.
      Returns:
      name values pairs extracted from the metadata
      Throws:
      DecodingException - if the metadata cannot be decoded
      IllegalArgumentException - if routing metadata cannot be decoded