Struct MetaData 

pub struct MetaData {
    pub is_multi_part: Option<bool>,
    pub content_type: Option<String>,
    pub size: Option<u64>,
    pub seq: Option<u64>,
    pub file_name: Option<String>,
    pub file_type: Option<String>,
    pub md5: Option<String>,
    pub description: Option<String>,
}

Optional per-metric metadata, especially for File/Bytes/multi-part transfers.

Fields

is_multi_part: Option<bool>

Whether the payload is one part of a multi-part transfer.

content_type: Option<String>

Content/media type.

size: Option<u64>

File/string/multi-part size in bytes.

seq: Option<u64>

Multi-part sequence number (distinct from the payload-level Sparkplug seq).

file_name: Option<String>

File name (for File metrics).

file_type: Option<String>

File type (e.g. xml, json).

md5: Option<String>

MD5 of the data.

description: Option<String>

Free-form description.

Trait Implementations

impl Clone for MetaData

fn clone(&self) -> MetaData

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for MetaData

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for MetaData

fn default() -> MetaData

Returns the “default value” for a type.

impl PartialEq for MetaData

fn eq(&self, other: &MetaData) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for MetaData