Struct sc_network::config::OnDemand

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pub struct OnDemand<B: BlockT> { /* private fields */ }

Expand description

Implements the Fetcher trait of the client. Makes it possible for the light client to perform network requests for some state.

This implementation stores all the requests in a queue. The network, in parallel, is then responsible for pulling elements out of that queue and fulfilling them.

Implementations

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impl<B: BlockT> OnDemand where
B::Header: HeaderT,

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pub fn new(checker: Arc<dyn FetchChecker>) -> Self

Creates new on-demand service.

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pub fn checker(&self) -> &Arc<dyn FetchChecker>

Get checker reference.

Trait Implementations

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impl Fetcher for OnDemand where
B: BlockT,
B::Header: HeaderT,

type RemoteHeaderResult = RemoteResponse<B::Header>

Remote header future.

type RemoteReadResult = RemoteResponse<HashMap<Vec<u8>, Option<Vec<u8>>>>

Remote storage read future.

type RemoteCallResult = RemoteResponse<Vec<u8>>

Remote call result future.

type RemoteChangesResult = RemoteResponse<Vec<(NumberFor, u32 )>>

Remote changes result future.

type RemoteBodyResult = RemoteResponse<Vec<B::Extrinsic>>

Remote block body result future.

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fn remote_header(
&self,
request: RemoteHeaderRequest<B::Header>
) -> Self::RemoteHeaderResult

Fetch remote header.

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fn remote_read(
&self,
request: RemoteReadRequest<B::Header>
) -> Self::RemoteReadResult

Fetch remote storage value.

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fn remote_read_child(
&self,
request: RemoteReadChildRequest<B::Header>
) -> Self::RemoteReadResult

Fetch remote storage child value.

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fn remote_call(
&self,
request: RemoteCallRequest<B::Header>
) -> Self::RemoteCallResult

Fetch remote call result.

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fn remote_changes(
&self,
request: RemoteChangesRequest<B::Header>
) -> Self::RemoteChangesResult

Fetch remote changes ((block number, extrinsic index)) where given key has been changed at a given blocks range. Read more

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fn remote_body(
&self,
request: RemoteBodyRequest<B::Header>
) -> Self::RemoteBodyResult

Fetch remote block body

Auto Trait Implementations

impl !RefUnwindSafe for OnDemand

impl Send for OnDemand

impl Sync for OnDemand

impl Unpin for OnDemand

impl !UnwindSafe for OnDemand

Blanket Implementations

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

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pub fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

pub fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

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

Mutably borrows from an owned value. Read more

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impl<T> CheckedConversion for T

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fn checked_from<T>(t: T) -> Option<Self> where
Self: TryFrom<T>,

Convert from a value of T into an equivalent instance of Option<Self>. Read more

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fn checked_into<T>(self) -> Option<T> where
Self: TryInto<T>,

Consume self to return Some equivalent value of Option<T>. Read more

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impl<T> From<T> for T

const: unstable · source

pub 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> 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 for T where
U: From<T>,

const: unstable · source

pub 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 T where
Outer: AsRef<T> + AsMut<T> + From<T>,
T: From<Outer>,

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

Get a reference to the inner from the outer.

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pub 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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pub const ALIGN: usize

The alignment of pointer.

type Init = T

The type for initializers.

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pub unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more

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pub unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more

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pub unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more

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pub 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

type Output = T

Should always be Self

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impl<T> SaturatedConversion for T

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fn saturated_from<T>(t: T) -> Self where
Self: UniqueSaturatedFrom<T>,

Convert from a value of T into an equivalent instance of Self. Read more

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fn saturated_into<T>(self) -> T where
Self: UniqueSaturatedInto<T>,

Consume self to return an equivalent value of T. Read more

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impl<T, U> TryFrom for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

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impl<S, T> UncheckedInto<T> for S where
T: UncheckedFrom<S>,

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pub fn unchecked_into(self) -> T

The counterpart to unchecked_from.

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impl<T, S> UniqueSaturatedInto<T> for S where
T: Bounded,
S: TryInto<T>,

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pub fn unique_saturated_into(self) -> T

Consume self to return an equivalent value of 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

Struct sc_network::config::OnDemand

Implementations

impl<B: BlockT> OnDemand<B> where B::Header: HeaderT,

pub fn new(checker: Arc<dyn FetchChecker<B>>) -> Self

pub fn checker(&self) -> &Arc<dyn FetchChecker<B>>

Trait Implementations

impl<B> Fetcher<B> for OnDemand<B> where B: BlockT, B::Header: HeaderT,

type RemoteHeaderResult = RemoteResponse<B::Header>

type RemoteReadResult = RemoteResponse<HashMap<Vec<u8>, Option<Vec<u8>>>>

type RemoteCallResult = RemoteResponse<Vec<u8>>

type RemoteChangesResult = RemoteResponse<Vec<(NumberFor<B>, u32)>>

type RemoteBodyResult = RemoteResponse<Vec<B::Extrinsic>>

fn remote_header( &self, request: RemoteHeaderRequest<B::Header>) -> Self::RemoteHeaderResult

fn remote_read( &self, request: RemoteReadRequest<B::Header>) -> Self::RemoteReadResult

fn remote_read_child( &self, request: RemoteReadChildRequest<B::Header>) -> Self::RemoteReadResult

fn remote_call( &self, request: RemoteCallRequest<B::Header>) -> Self::RemoteCallResult

fn remote_changes( &self, request: RemoteChangesRequest<B::Header>) -> Self::RemoteChangesResult

fn remote_body( &self, request: RemoteBodyRequest<B::Header>) -> Self::RemoteBodyResult

Auto Trait Implementations

impl<B> !RefUnwindSafe for OnDemand<B>

impl<B> Send for OnDemand<B>

impl<B> Sync for OnDemand<B>

impl<B> Unpin for OnDemand<B>

impl<B> !UnwindSafe for OnDemand<B>

Blanket Implementations

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

pub fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

pub fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

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

impl<T> CheckedConversion for T

fn checked_from<T>(t: T) -> Option<Self> where Self: TryFrom<T>,

fn checked_into<T>(self) -> Option<T> where Self: TryInto<T>,

impl<T> From<T> for T

pub fn from(t: T) -> T

impl<T> Instrument for T

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

fn in_current_span(self) -> Instrumented<Self>

impl<T> Instrument for T

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

fn in_current_span(self) -> Instrumented<Self>

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

pub fn into(self) -> U

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

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

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

impl<T> Pointable for T

pub const ALIGN: usize

type Init = T

pub unsafe fn init(init: <T as Pointable>::Init) -> usize

pub unsafe fn deref<'a>(ptr: usize) -> &'a T

pub unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

pub unsafe fn drop(ptr: usize)

impl<T> Same<T> for T

type Output = T

impl<T> SaturatedConversion for T

fn saturated_from<T>(t: T) -> Self where Self: UniqueSaturatedFrom<T>,

fn saturated_into<T>(self) -> T where Self: UniqueSaturatedInto<T>,

impl<T, U> TryFrom<U> for T where U: Into<T>,

type Error = Infallible

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

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

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

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

impl<S, T> UncheckedInto<T> for S where T: UncheckedFrom<S>,

pub fn unchecked_into(self) -> T

impl<T, S> UniqueSaturatedInto<T> for S where T: Bounded, S: TryInto<T>,

pub fn unique_saturated_into(self) -> T

impl<V, T> VZip<V> for T where V: MultiLane<T>,

pub fn vzip(self) -> V

impl<T> WithSubscriber for T

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

fn with_current_subscriber(self) -> WithDispatch<Self>

impl<B: BlockT> OnDemand<B> where
B::Header: HeaderT,

impl<B> Fetcher<B> for OnDemand<B> where
B: BlockT,
B::Header: HeaderT,

type RemoteChangesResult = RemoteResponse<Vec<(NumberFor<B>, u32 )>>

fn remote_header(
&self,
request: RemoteHeaderRequest<B::Header>
) -> Self::RemoteHeaderResult

fn remote_read(
&self,
request: RemoteReadRequest<B::Header>
) -> Self::RemoteReadResult

fn remote_read_child(
&self,
request: RemoteReadChildRequest<B::Header>
) -> Self::RemoteReadResult

fn remote_call(
&self,
request: RemoteCallRequest<B::Header>
) -> Self::RemoteCallResult

fn remote_changes(
&self,
request: RemoteChangesRequest<B::Header>
) -> Self::RemoteChangesResult

fn remote_body(
&self,
request: RemoteBodyRequest<B::Header>
) -> Self::RemoteBodyResult

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

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

fn checked_from<T>(t: T) -> Option<Self> where
Self: TryFrom<T>,

fn checked_into<T>(self) -> Option<T> where
Self: TryInto<T>,

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

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

fn saturated_from<T>(t: T) -> Self where
Self: UniqueSaturatedFrom<T>,

fn saturated_into<T>(self) -> T where
Self: UniqueSaturatedInto<T>,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

impl<S, T> UncheckedInto<T> for S where
T: UncheckedFrom<S>,

impl<T, S> UniqueSaturatedInto<T> for S where
T: Bounded,
S: TryInto<T>,

impl<V, T> VZip<V> for T where
V: MultiLane<T>,

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