pub struct ResourceMeta { /* private fields */ }
Expand description

The metadata of a resource.

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impl ResourceMeta

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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.

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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.

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pub fn size(&self) -> u64

The size of the resource.

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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.

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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.

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

Update the metadata.

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

Update the metadata.

Trait Implementations§

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impl Clone for ResourceMeta

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fn clone(&self) -> ResourceMeta

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for ResourceMeta

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

Formats the value using the given formatter. Read more
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impl<'de> Deserialize<'de> for ResourceMeta

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl PartialEq<ResourceMeta> for ResourceMeta

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

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Serialize for ResourceMeta

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

Serialize this value into the given Serde serializer. Read more
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impl Copy for ResourceMeta

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impl Eq for ResourceMeta

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impl StructuralEq for ResourceMeta

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impl StructuralPartialEq for ResourceMeta

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for Twhere T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere T: ?Sized,

const: unstable · source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere U: From<T>,

const: unstable · source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for Twhere T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
const: unstable · source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for Twhere V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> DeserializeOwned for Twhere T: for<'de> Deserialize<'de>,