Struct Metadata 

pub struct Metadata {
    pub timestamp: Option<u64>,
    pub user_id: Option<String>,
    pub causality: Option<VectorClock>,
    pub custom: Option<Vec<u8>>,
}

Available on crate feature extensions only.

Metadata attached to a sync message

Fields

timestamp: Option<u64>

Timestamp (microseconds since epoch)

user_id: Option<String>

User/session identifier

causality: Option<VectorClock>

Causality information

custom: Option<Vec<u8>>

Custom application data

Implementations

impl Metadata

pub fn new() -> Self

Create empty metadata

pub fn with_timestamp() -> Self

Create with current timestamp

pub fn set_timestamp(&mut self, time: SystemTime)

Set timestamp from SystemTime

pub fn get_timestamp(&self) -> Option<SystemTime>

Get timestamp as SystemTime

pub fn set_user_id(&mut self, user_id: impl Into<String>)

Set user ID

pub fn set_causality(&mut self, clock: VectorClock)

Set causality

pub fn set_custom(&mut self, data: Vec<u8>)

Set custom data

pub fn is_empty(&self) -> bool

Check if empty

pub fn encode(&self) -> Vec<u8>

Encode to bytes

pub fn decode(data: &[u8]) -> Result<(Self, usize), NegotiationError>

Decode from bytes

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.