diff options
Diffstat (limited to 'packages/order-watcher/src/types.ts')
-rw-r--r-- | packages/order-watcher/src/types.ts | 66 |
1 files changed, 65 insertions, 1 deletions
diff --git a/packages/order-watcher/src/types.ts b/packages/order-watcher/src/types.ts index 8078dd971..2b529a939 100644 --- a/packages/order-watcher/src/types.ts +++ b/packages/order-watcher/src/types.ts @@ -1,4 +1,4 @@ -import { OrderState } from '@0x/types'; +import { OrderState, SignedOrder } from '@0x/types'; import { LogEntryEvent } from 'ethereum-types'; export enum OrderWatcherError { @@ -31,3 +31,67 @@ export enum InternalOrderWatcherError { ZrxNotInTokenRegistry = 'ZRX_NOT_IN_TOKEN_REGISTRY', WethNotInTokenRegistry = 'WETH_NOT_IN_TOKEN_REGISTRY', } + +export enum OrderWatcherMethod { + // Methods initiated by the user. + GetStats = 'GET_STATS', + AddOrder = 'ADD_ORDER', + RemoveOrder = 'REMOVE_ORDER', + // These are spontaneous; they are primarily orderstate changes. + Update = 'UPDATE', + // `subscribe` and `unsubscribe` are methods of OrderWatcher, but we don't + // need to expose them to the WebSocket server user because the user implicitly + // subscribes and unsubscribes by connecting and disconnecting from the server. +} + +// Users have to create a json object of this format and attach it to +// the data field of their WebSocket message to interact with the server. +export type WebSocketRequest = AddOrderRequest | RemoveOrderRequest | GetStatsRequest; + +export interface AddOrderRequest { + id: number; + jsonrpc: string; + method: OrderWatcherMethod.AddOrder; + params: { signedOrder: SignedOrder }; +} + +export interface RemoveOrderRequest { + id: number; + jsonrpc: string; + method: OrderWatcherMethod.RemoveOrder; + params: { orderHash: string }; +} + +export interface GetStatsRequest { + id: number; + jsonrpc: string; + method: OrderWatcherMethod.GetStats; +} + +// Users should expect a json object of this format in the data field +// of the WebSocket messages that the server sends out. +export type WebSocketResponse = SuccessfulWebSocketResponse | ErrorWebSocketResponse; + +export interface SuccessfulWebSocketResponse { + id: number; + jsonrpc: string; + method: OrderWatcherMethod; + result: OrderState | GetStatsResult | undefined; // result is undefined for ADD_ORDER and REMOVE_ORDER +} + +export interface ErrorWebSocketResponse { + id: number | null; + jsonrpc: string; + method: null; + error: JSONRPCError; +} + +export interface JSONRPCError { + code: number; + message: string; + data?: string | object; +} + +export interface GetStatsResult { + orderCount: number; +} |