pub struct Resources {
    pub capacities: ResourceTable,
    pub defaults: ResourceTable,
    pub labels: ResourceVec<&'static str>,
    /* private fields */
}
Expand description

User defined resources available to be used by calls on the JSON-RPC server. Each of the 8 possible resource kinds, for instance “cpu”, “io”, “nanobots”, store a maximum capacity and a default. A value of 0 means no limits for the given resource.

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§capacities: ResourceTable

Max capacity for all resource kinds

§defaults: ResourceTable

Default value for all resource kinds; unless a method has a resource limit defined, this is the cost of a call (0 means no default limit)

§labels: ResourceVec<&'static str>

Labels for every registered resource

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impl Resources

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pub fn register( &mut self, label: &'static str, capacity: u16, default: u16 ) -> Result<(), Error>

Register a new resource kind. Errors if label is already registered, or if the total number of registered resources would exceed 8.

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pub fn claim(&self, units: ResourceTable) -> Result<ResourceGuard, Error>

Attempt to claim units units for each resource, incrementing current totals. If successful, returns a ResourceGuard which decrements the totals by the same amounts once dropped.

Trait Implementations§

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impl Clone for Resources

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fn clone(&self) -> Resources

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 Resources

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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 Default for Resources

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fn default() -> Resources

Returns the “default value” for a type. Read more

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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,

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fn borrow(&self) -> &T

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

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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

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for Twhere U: From<T>,

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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> Same<T> for T

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type Output = T

Should always be Self
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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.
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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.
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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> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<T> MaybeSend for Twhere T: Send,