Module fetching 

Fetching missing data from remote providers.

This module provides a mechanism to fetch data that is missing from this query service’s storage from a remote data availability provider. Fetcher can be used to handle concurrent requests for data, ensuring that each distinct resource is only fetched once at a time.

Fetching is ultimately dispatched to a Provider, which implements fetching for a specific type of resource from a specific source. The provider module contains built-in implementations of Provider for various data availability sources.

Re-exports

pub use provider::Provider;

pub use request::Request;

Modules

provider

Asynchronous fetching from external data availability providers.

request

Requests for fetching resources.

Structs

Fetcher

Management of concurrent requests to fetch resources.

NonEmptyRange

Added type safety for objects which are fetched in batches.

Traits

Callback

A callback to process the result of a request.

LocalCallback

A callback to process the result of a request.