diff options
Diffstat (limited to 'packages/connect/src/utils/orderbook_channel_message_parser.ts')
-rw-r--r-- | packages/connect/src/utils/orderbook_channel_message_parser.ts | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/packages/connect/src/utils/orderbook_channel_message_parser.ts b/packages/connect/src/utils/orderbook_channel_message_parser.ts new file mode 100644 index 000000000..9a9ca8901 --- /dev/null +++ b/packages/connect/src/utils/orderbook_channel_message_parser.ts @@ -0,0 +1,37 @@ +import { assert } from '@0xproject/assert'; +import { schemas } from '@0xproject/json-schemas'; +import * as _ from 'lodash'; + +import { OrderbookChannelMessage, OrderbookChannelMessageTypes } from '../types'; + +import { relayerResponseJsonParsers } from './relayer_response_json_parsers'; + +export const orderbookChannelMessageParser = { + parse(utf8Data: string): OrderbookChannelMessage { + const messageObj = JSON.parse(utf8Data); + const type: string = _.get(messageObj, 'type'); + assert.assert(!_.isUndefined(type), `Message is missing a type parameter: ${utf8Data}`); + assert.isString('type', type); + switch (type) { + case OrderbookChannelMessageTypes.Snapshot: { + assert.doesConformToSchema('message', messageObj, schemas.relayerApiOrderbookChannelSnapshotSchema); + const orderbookJson = messageObj.payload; + const orderbook = relayerResponseJsonParsers.parseOrderbookResponseJson(orderbookJson); + return _.assign(messageObj, { payload: orderbook }); + } + case OrderbookChannelMessageTypes.Update: { + assert.doesConformToSchema('message', messageObj, schemas.relayerApiOrderbookChannelUpdateSchema); + const orderJson = messageObj.payload; + const order = relayerResponseJsonParsers.parseOrderJson(orderJson); + return _.assign(messageObj, { payload: order }); + } + default: { + return { + type: OrderbookChannelMessageTypes.Unknown, + requestId: 0, + payload: undefined, + }; + } + } + }, +}; |