Struct ResourceMeta

pub struct ResourceMeta { /* private fields */ }

The metadata of a resource.

Implementations

impl ResourceMeta

pub fn new(mtime_in_current: Option<SystemTime>, size: u64) -> Self

size is the length of the data.

mtime_in_current

mtime_in_current is the modify time of the resource in the current storage.

Is None if this resource has not yet been written to the current storage. In that case, there’s always a change. This can occur when data has been written to the public storage, and the current storage hasn’t gotten that data yet.

pub fn new_from_event( mtime_in_current: Option<SystemTime>, event_mtime: SystemTime, size: u64, ) -> Self

Same as Self::new but with an additional argument - event_mtime.

It represents the time of the latest event which acted upon the resource. Only use this function for the public storage, as it’s useless elsewhere.

pub fn size(&self) -> u64

The size of the resource.

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

Mtime of this resource in the current storage. None if this hasn’t been written to the curren storage.

pub fn mtime_of_last_event(&self) -> SystemTime

The timestamp of the last modification to this resource by an event. Only applicable to the public storage. None if this hasn’t been written to the curren storage.

pub fn set_size(&mut self, size: u64)

Update the metadata.

pub fn set_mtime_in_current(&mut self, mtime_in_current: Option<SystemTime>)

Update the metadata.

Trait Implementations

impl Clone for ResourceMeta

fn clone(&self) -> ResourceMeta

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ResourceMeta

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ResourceMeta

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for ResourceMeta

fn eq(&self, other: &ResourceMeta) -> 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 Serialize for ResourceMeta

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for ResourceMeta

impl Eq for ResourceMeta

impl StructuralPartialEq for ResourceMeta