Struct LimitedExternalities

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

An *Externalities implementation with limited capabilities.

Implementations

impl<T> LimitedExternalities<T>

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

Create new externalities limited to given capabilities.

Trait Implementations

impl<T> DbExternalities for LimitedExternalities<T>

where T: DbExternalities,

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

Sets a value in the local storage.

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

Removes a value in the local storage.

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.

fn local_storage_get( &mut self, kind: StorageKind, key: &[u8], ) -> Option<Vec<u8>>

Gets a value from the local storage.

impl<T> Externalities for LimitedExternalities<T>

where T: Externalities,

fn is_validator(&self) -> bool

Returns if the local node is a potential validator.

fn network_state(&self) -> Result<OpaqueNetworkState, ()>

Returns information about the local node’s network state.

fn timestamp(&mut self) -> Timestamp

Returns current UNIX timestamp (in millis)

fn sleep_until(&mut self, deadline: Timestamp)

Pause the execution until deadline is reached.

fn random_seed(&mut self) -> [u8; 32]

Returns a random seed.

fn http_request_start( &mut self, method: &str, uri: &str, meta: &[u8], ) -> Result<HttpRequestId, ()>

Initiates a http request given HTTP verb and the URL.

fn http_request_add_header( &mut self, request_id: HttpRequestId, name: &str, value: &str, ) -> Result<(), ()>

Append header to the request.

fn http_request_write_body( &mut self, request_id: HttpRequestId, chunk: &[u8], deadline: Option<Timestamp>, ) -> Result<(), HttpError>

Write a chunk of request body.

fn http_response_wait( &mut self, ids: &[HttpRequestId], deadline: Option<Timestamp>, ) -> Vec<HttpRequestStatus>

Block and wait for the responses for given requests.

fn http_response_headers( &mut self, request_id: HttpRequestId, ) -> Vec<(Vec<u8>, Vec<u8>)>

Read all response headers.

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.

fn set_authorized_nodes( &mut self, nodes: Vec<OpaquePeerId>, authorized_only: bool, )

Set the authorized nodes from runtime.