diff options
Diffstat (limited to 'packages/connect/src/ws_orders_channel.ts')
-rw-r--r-- | packages/connect/src/ws_orders_channel.ts | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/packages/connect/src/ws_orders_channel.ts b/packages/connect/src/ws_orders_channel.ts deleted file mode 100644 index 70a357c61..000000000 --- a/packages/connect/src/ws_orders_channel.ts +++ /dev/null @@ -1,102 +0,0 @@ -import { OrdersChannelMessageTypes, OrdersChannelSubscriptionOpts } from '@0x/types'; -import * as _ from 'lodash'; -import { v4 as uuid } from 'uuid'; -import * as WebSocket from 'websocket'; - -import { OrdersChannel, OrdersChannelHandler } from './types'; -import { assert } from './utils/assert'; -import { ordersChannelMessageParser } from './utils/orders_channel_message_parser'; - -export interface OrdersChannelSubscriptionOptsMap { - [key: string]: OrdersChannelSubscriptionOpts; -} - -/** - * This class includes all the functionality related to interacting with a websocket endpoint - * that implements the standard relayer API v0 - */ -export class WebSocketOrdersChannel implements OrdersChannel { - private readonly _client: WebSocket.w3cwebsocket; - private readonly _handler: OrdersChannelHandler; - private readonly _subscriptionOptsMap: OrdersChannelSubscriptionOptsMap = {}; - /** - * Instantiates a new WebSocketOrdersChannel instance - * @param client A WebSocket client - * @param handler An OrdersChannelHandler instance that responds to various - * channel updates - * @return An instance of WebSocketOrdersChannel - */ - constructor(client: WebSocket.w3cwebsocket, handler: OrdersChannelHandler) { - assert.isOrdersChannelHandler('handler', handler); - // set private members - this._client = client; - this._handler = handler; - // attach client callbacks - this._client.onerror = err => { - this._handler.onError(this, err); - }; - this._client.onclose = () => { - this._handler.onClose(this); - }; - this._client.onmessage = message => { - this._handleWebSocketMessage(message); - }; - } - /** - * Subscribe to orderbook snapshots and updates from the websocket - * @param subscriptionOpts An OrdersChannelSubscriptionOpts instance describing which - * assetData pair to subscribe to - */ - public subscribe(subscriptionOpts: OrdersChannelSubscriptionOpts): void { - assert.isOrdersChannelSubscriptionOpts('subscriptionOpts', subscriptionOpts); - assert.assert(this._client.readyState === WebSocket.w3cwebsocket.OPEN, 'WebSocket connection is closed'); - const requestId = uuid(); - this._subscriptionOptsMap[requestId] = subscriptionOpts; - const subscribeMessage = { - type: 'subscribe', - channel: 'orders', - requestId, - payload: subscriptionOpts, - }; - this._client.send(JSON.stringify(subscribeMessage)); - } - /** - * Close the websocket and stop receiving updates - */ - public close(): void { - this._client.close(); - } - private _handleWebSocketMessage(message: any): void { - if (_.isUndefined(message.data)) { - this._handler.onError(this, new Error(`Message does not contain data. Url: ${this._client.url}`)); - return; - } - try { - const data = message.data; - const parserResult = ordersChannelMessageParser.parse(data); - const subscriptionOpts = this._subscriptionOptsMap[parserResult.requestId]; - if (_.isUndefined(subscriptionOpts)) { - this._handler.onError( - this, - new Error(`Message has unknown requestId. Url: ${this._client.url} Message: ${data}`), - ); - return; - } - switch (parserResult.type) { - case OrdersChannelMessageTypes.Update: { - this._handler.onUpdate(this, subscriptionOpts, parserResult.payload); - break; - } - default: { - this._handler.onError( - this, - new Error(`Message has unknown type parameter. Url: ${this._client.url} Message: ${data}`), - subscriptionOpts, - ); - } - } - } catch (error) { - this._handler.onError(this, error); - } - } -} |