pub struct LimitedExternalities<T> { /* private fields */ }
Expand description

An *Externalities implementation with limited capabilities.

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impl<T> LimitedExternalities<T>

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pub fn new(capabilities: Capabilities, externalities: T) -> Self

Create new externalities limited to given capabilities.

Trait Implementations§

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impl<T: DbExternalities> DbExternalities for LimitedExternalities<T>

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fn local_storage_set(&mut self, kind: StorageKind, key: &[u8], value: &[u8])

Sets a value in the local storage. Read more
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fn local_storage_clear(&mut self, kind: StorageKind, key: &[u8])

Removes a value in the local storage. Read more
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fn local_storage_compare_and_set( &mut self, kind: StorageKind, key: &[u8], old_value: Option<&[u8]>, new_value: &[u8] ) -> bool

Sets a value in the local storage if it matches current value. Read more
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fn local_storage_get( &mut self, kind: StorageKind, key: &[u8] ) -> Option<Vec<u8>>

Gets a value from the local storage. Read more
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impl<T: Externalities> Externalities for LimitedExternalities<T>

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fn is_validator(&self) -> bool

Returns if the local node is a potential validator. Read more
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fn network_state(&self) -> Result<OpaqueNetworkState, ()>

Returns information about the local node’s network state.
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fn timestamp(&mut self) -> Timestamp

Returns current UNIX timestamp (in millis)
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fn sleep_until(&mut self, deadline: Timestamp)

Pause the execution until deadline is reached.
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fn random_seed(&mut self) -> [u8; 32]

Returns a random seed. Read more
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fn http_request_start( &mut self, method: &str, uri: &str, meta: &[u8] ) -> Result<HttpRequestId, ()>

Initiates a http request given HTTP verb and the URL. Read more
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fn http_request_add_header( &mut self, request_id: HttpRequestId, name: &str, value: &str ) -> Result<(), ()>

Append header to the request. Read more
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fn http_request_write_body( &mut self, request_id: HttpRequestId, chunk: &[u8], deadline: Option<Timestamp> ) -> Result<(), HttpError>

Write a chunk of request body. Read more
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fn http_response_wait( &mut self, ids: &[HttpRequestId], deadline: Option<Timestamp> ) -> Vec<HttpRequestStatus>

Block and wait for the responses for given requests. Read more
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fn http_response_headers( &mut self, request_id: HttpRequestId ) -> Vec<(Vec<u8>, Vec<u8>)>

Read all response headers. Read more
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fn http_response_read_body( &mut self, request_id: HttpRequestId, buffer: &mut [u8], deadline: Option<Timestamp> ) -> Result<usize, HttpError>

Read a chunk of body response to given buffer. Read more
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fn set_authorized_nodes( &mut self, nodes: Vec<OpaquePeerId>, authorized_only: bool )

Set the authorized nodes from runtime. Read more

Auto Trait Implementations§

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impl<T> RefUnwindSafe for LimitedExternalities<T>where T: RefUnwindSafe,

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impl<T> Send for LimitedExternalities<T>where T: Send,

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impl<T> Sync for LimitedExternalities<T>where T: Sync,

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impl<T> Unpin for LimitedExternalities<T>where T: Unpin,

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impl<T> UnwindSafe for LimitedExternalities<T>where T: UnwindSafe,

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

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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, Outer> IsWrappedBy<Outer> for Twhere Outer: AsRef<T> + AsMut<T> + From<T>, T: From<Outer>,

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fn from_ref(outer: &Outer) -> &T

Get a reference to the inner from the outer.

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fn from_mut(outer: &mut Outer) -> &mut T

Get a mutable reference to the inner from the outer.

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impl<T> Pointable for T

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const ALIGN: usize = mem::align_of::<T>()

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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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, 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<S, T> UncheckedInto<T> for Swhere T: UncheckedFrom<S>,

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fn unchecked_into(self) -> T

The counterpart to unchecked_from.
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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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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<T> JsonSchemaMaybe for T

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impl<T> MaybeRefUnwindSafe for Twhere T: RefUnwindSafe,