Returns the message api key number.

Receive a binary in the kafka wire format and deserialize it into a map.

Response content fields:

• throttle_time_ms: The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota. (int32 | versions 1+)

• groups: Each described group. ([]DescribedGroup | versions 0+)

  • error_code: The describe error, or 0 if there was no error. (int16 | versions 0+)

  • group_id: The group ID string. (string | versions 0+)

  • group_state: The group state string, or the empty string. (string | versions 0+)

  • protocol_type: The group protocol type, or the empty string. (string | versions 0+)

  • protocol_data: The group protocol data, or the empty string. (string | versions 0+)

  • members: The group members. ([]DescribedGroupMember | versions 0+)

    • member_id: The member ID assigned by the group coordinator. (string | versions 0+)

    • group_instance_id: The unique identifier of the consumer instance provided by end user. (string | versions 4+)

    • client_id: The client ID used in the member's latest join group request. (string | versions 0+)

    • client_host: The client host. (string | versions 0+)

    • member_metadata: The metadata corresponding to the current group protocol in use. (bytes | versions 0+)

    • member_assignment: The current assignment provided by the group leader. (bytes | versions 0+)

  • authorized_operations: 32-bit bitfield to represent authorized operations for this group. (int32 | versions 3+)

Returns the current max supported version of this message.

Returns the current min supported version of this message.

Receives a map and serialize it to kafka wire format of the given version.

Input content fields:

• groups: The names of the groups to describe ([]string | versions 0+)

• include_authorized_operations: Whether to include authorized operations. (bool | versions 3+)