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authorBrandon Millman <brandon.millman@gmail.com>2018-02-16 06:22:00 +0800
committerBrandon Millman <brandon.millman@gmail.com>2018-02-16 16:20:27 +0800
commitc4bcf24640a6fafa214e37543df90f3df36a301f (patch)
tree5927c44fc2e5e17e5f5c7b752086e211da78cca7 /packages/connect
parente2b51c5dc46b30b21e0561689de1f9a3d0127554 (diff)
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Add configurable heartbeat to WebSocketOrderbookChannel
Diffstat (limited to 'packages/connect')
-rw-r--r--packages/connect/CHANGELOG.md1
-rw-r--r--packages/connect/src/index.ts1
-rw-r--r--packages/connect/src/schemas/schemas.ts2
-rw-r--r--packages/connect/src/schemas/websocket_orderbook_channel_config_schema.ts7
-rw-r--r--packages/connect/src/types.ts7
-rw-r--r--packages/connect/src/ws_orderbook_channel.ts26
6 files changed, 42 insertions, 2 deletions
diff --git a/packages/connect/CHANGELOG.md b/packages/connect/CHANGELOG.md
index 18c808e5e..b187267e5 100644
--- a/packages/connect/CHANGELOG.md
+++ b/packages/connect/CHANGELOG.md
@@ -3,6 +3,7 @@
## v0.6.0 - _TBD, 2018_
* Add pagination options to HttpClient methods (#393)
+ * Add heartbeat configuration to WebSocketOrderbookChannel constructor (#393)
## v0.5.7 - _February 9, 2018_
diff --git a/packages/connect/src/index.ts b/packages/connect/src/index.ts
index 344a32e28..bb42384f9 100644
--- a/packages/connect/src/index.ts
+++ b/packages/connect/src/index.ts
@@ -17,4 +17,5 @@ export {
TokenPairsItem,
TokenPairsRequestOpts,
TokenTradeInfo,
+ WebSocketOrderbookChannelConfig,
} from './types';
diff --git a/packages/connect/src/schemas/schemas.ts b/packages/connect/src/schemas/schemas.ts
index 0b8b798a9..b9a8472fb 100644
--- a/packages/connect/src/schemas/schemas.ts
+++ b/packages/connect/src/schemas/schemas.ts
@@ -3,6 +3,7 @@ import { orderBookRequestSchema } from './orderbook_request_schema';
import { ordersRequestOptsSchema } from './orders_request_opts_schema';
import { pagedRequestOptsSchema } from './paged_request_opts_schema';
import { tokenPairsRequestOptsSchema } from './token_pairs_request_opts_schema';
+import { webSocketOrderbookChannelConfigSchema } from './websocket_orderbook_channel_config_schema';
export const schemas = {
feesRequestSchema,
@@ -10,4 +11,5 @@ export const schemas = {
ordersRequestOptsSchema,
pagedRequestOptsSchema,
tokenPairsRequestOptsSchema,
+ webSocketOrderbookChannelConfigSchema,
};
diff --git a/packages/connect/src/schemas/websocket_orderbook_channel_config_schema.ts b/packages/connect/src/schemas/websocket_orderbook_channel_config_schema.ts
new file mode 100644
index 000000000..2e9987e63
--- /dev/null
+++ b/packages/connect/src/schemas/websocket_orderbook_channel_config_schema.ts
@@ -0,0 +1,7 @@
+export const webSocketOrderbookChannelConfigSchema = {
+ id: '/WebSocketOrderbookChannelConfig',
+ type: 'object',
+ properties: {
+ heartbeatIntervalMs: { type: 'number' },
+ },
+};
diff --git a/packages/connect/src/types.ts b/packages/connect/src/types.ts
index 970eff498..5f837b0b3 100644
--- a/packages/connect/src/types.ts
+++ b/packages/connect/src/types.ts
@@ -44,6 +44,13 @@ export interface OrderbookChannel {
}
/*
+ * heartbeatInterval: Interval in milliseconds that the orderbook channel should ping the underlying websocket. Default: 15000
+ */
+export interface WebSocketOrderbookChannelConfig {
+ heartbeatIntervalMs?: number;
+}
+
+/*
* baseTokenAddress: The address of token designated as the baseToken in the currency pair calculation of price
* quoteTokenAddress: The address of token designated as the quoteToken in the currency pair calculation of price
* snapshot: If true, a snapshot of the orderbook will be sent before the updates to the orderbook
diff --git a/packages/connect/src/ws_orderbook_channel.ts b/packages/connect/src/ws_orderbook_channel.ts
index 822a022f4..564e8686b 100644
--- a/packages/connect/src/ws_orderbook_channel.ts
+++ b/packages/connect/src/ws_orderbook_channel.ts
@@ -3,6 +3,7 @@ import { schemas } from '@0xproject/json-schemas';
import * as _ from 'lodash';
import * as WebSocket from 'websocket';
+import { schemas as clientSchemas } from './schemas/schemas';
import {
OrderbookChannel,
OrderbookChannelHandler,
@@ -10,9 +11,12 @@ import {
OrderbookChannelSubscriptionOpts,
WebsocketClientEventType,
WebsocketConnectionEventType,
+ WebSocketOrderbookChannelConfig,
} from './types';
import { orderbookChannelMessageParser } from './utils/orderbook_channel_message_parser';
+const DEFAULT_HEARTBEAT_INTERVAL_MS = 15000;
+
/**
* This class includes all the functionality related to interacting with a websocket endpoint
* that implements the standard relayer API v0
@@ -21,15 +25,25 @@ export class WebSocketOrderbookChannel implements OrderbookChannel {
private _apiEndpointUrl: string;
private _client: WebSocket.client;
private _connectionIfExists?: WebSocket.connection;
+ private _heartbeatTimerIfExists?: NodeJS.Timer;
private _subscriptionCounter = 0;
+ private _heartbeatIntervalMs: number;
/**
* Instantiates a new WebSocketOrderbookChannel instance
* @param url The relayer API base WS url you would like to interact with
+ * @param url The configuration object. Look up the type for the description.
* @return An instance of WebSocketOrderbookChannel
*/
- constructor(url: string) {
+ constructor(url: string, config?: WebSocketOrderbookChannelConfig) {
assert.isUri('url', url);
+ if (!_.isUndefined(config)) {
+ assert.doesConformToSchema('config', config, clientSchemas.webSocketOrderbookChannelConfigSchema);
+ }
this._apiEndpointUrl = url;
+ this._heartbeatIntervalMs =
+ _.isUndefined(config) || _.isUndefined(config.heartbeatIntervalMs)
+ ? DEFAULT_HEARTBEAT_INTERVAL_MS
+ : config.heartbeatIntervalMs;
this._client = new WebSocket.client();
}
/**
@@ -63,7 +77,7 @@ export class WebSocketOrderbookChannel implements OrderbookChannel {
connection.on(WebsocketConnectionEventType.Error, wsError => {
handler.onError(this, subscriptionOpts, wsError);
});
- connection.on(WebsocketConnectionEventType.Close, () => {
+ connection.on(WebsocketConnectionEventType.Close, (code: number, desc: string) => {
handler.onClose(this, subscriptionOpts);
});
connection.on(WebsocketConnectionEventType.Message, message => {
@@ -80,6 +94,9 @@ export class WebSocketOrderbookChannel implements OrderbookChannel {
if (!_.isUndefined(this._connectionIfExists)) {
this._connectionIfExists.close();
}
+ if (!_.isUndefined(this._heartbeatTimerIfExists)) {
+ clearInterval(this._heartbeatTimerIfExists);
+ }
}
private _getConnection(callback: (error?: Error, connection?: WebSocket.connection) => void) {
if (!_.isUndefined(this._connectionIfExists) && this._connectionIfExists.connected) {
@@ -87,6 +104,11 @@ export class WebSocketOrderbookChannel implements OrderbookChannel {
} else {
this._client.on(WebsocketClientEventType.Connect, connection => {
this._connectionIfExists = connection;
+ if (this._heartbeatIntervalMs !== 0) {
+ this._heartbeatTimerIfExists = setInterval(() => {
+ connection.ping('');
+ }, this._heartbeatIntervalMs);
+ }
callback(undefined, this._connectionIfExists);
});
this._client.on(WebsocketClientEventType.ConnectFailed, error => {