Jaco GreeffandAmaury Martiny
011e24bd49
* Pass registry to all codec types
* Pass through registry inside API (where the rubber meets the road)
* Small additions
* Derive w/ registry
* Types are more-or-less covered
* Some test adjustments (guided by linting)
* Rid the world of some ../injector
* Additional cleanups, merge injector into registry
* Cleanup extrinsics (always passing registry)
* Remove injector imports (not all replaced)
* Typ spec cleanups
* Phase 1 - types seem lint-free
* rpc-{core,provider} lint free
* Start working through metadata
* Small metadata additions
* Some e2e tests (out-of-order)
* Down to a handful
* Fixup tests for packages/types/src/codec/*.spec.ts
* packages/types/src/codec passes all tests
* packages/types ok (Convert storage with registry fn)
* progress (sort out injection, dreaded find-before msg)
* Down to 1 lint issue...
* Linting done... along with on-demand import
* Exposed ordering
* Remove global injects
* Cleanup comments
* Add CHANGELOG & UPGRADING
* Apply suggestions from code review
Co-Authored-By: Amaury Martiny <amaury.martiny@protonmail.com>
* Update Metadata description
@polkadot/rpc-provider
Generic transport providers to handle the transport of method calls to and from Polkadot clients from applications interacting with it. It provides an interface to making RPC calls and is generally, unless you are operating at a low-level and taking care of encoding and decoding of parameters/results, it won't be directly used, rather only passed to a higher-level interface.
Provider Selection
There are two flavours of the providers provided, one allowing for using HTTP as a transport mechanism, the other using WebSockets. It is generally recommended to use the WsProvider since in addition to standard calls, it allows for subscriptions where all changes to state can be pushed from the node to the client.
Both providers are usable (as is the API), in both browser-based and Node.js environments. Polyfills for unsupported functionality are automatically applied based on feature-detection.
Usage
Installation -
yarn add @polkadot/rpc-provider
WebSocket Initialisation -
import WsProvider from '@polkadot/rpc-provider/ws';
// this is the actual default endpoint
const provider = new WsProvider('ws://127.0.0.1:9944');
const version = await provider.send('client_version', []);
console.log('client version', version);
HTTP Initialisation -
import { HttpProvider } from '@polkadot/rpc-provider';
// this is the actual default endpoint
const provider = new HttpProvider('http://127.0.0.1:9933');
const version = await provider.send('chain_getBlockHash', []);
console.log('latest block Hash', hash);