0x Exchange Events

This repository provides a library that queries 0x exchange events from a 0x subgraph deployed on graphprotocol.

Unlike the 0x-event-extractor or extracting event logs via the getLogsAsync method of 0x.js, this client does not require a server and allows event filtering beyond the indexed event arguments (i.e. makerAddress, feeRecipientAddress, orderHash for the Fill event).

Import this module and easily filter for the exchange event you need.

Install

yarn add 0x-exchange-events

Usage

You get started by constructing an instance of the HttpEventClient

import { HttpEventClient } from "0x-exchange-events";
const client = new HttpEventClient();

Get Fill Events

Get 50 fill events on version 2 of the 0x protocol, filtered by makerAssetData and takerAssetData

const FillEvents = await client.getFillEventsAsync(50, {
  // Filter arguments
  makerAssetDataV2: "0xf47261b0000000000000000000000000e45b7cd82ac0f3f6cfc9ecd165b79d6f87ed2875",
  takerAssetDataV2: "0xf47261b0000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
  ...
});

Example output:

{
  "data": {
    "filledOrders": [
      {
        "__typename": "FilledOrder",
        "feeRecipient": "0x8124071f810d533ff63de61d0c98db99eeb99d64",
        "id": "0x92287ef67032a57bd324a3b31b7c0af4f33c397ff77fcaa43e211b74eeb78bf8",
        "maker": "0xd964af361d1e6a7941126532b80fe5fcc726eefa",
        "makerAssetDataV2": "0xf47261b0000000000000000000000000e45b7cd82ac0f3f6cfc9ecd165b79d6f87ed2875",
        "makerAssetFilledAmount": "2712000000000000000000",
        "makerFeePaid": "0",
        "senderV2": "0x0681e844593a051e2882ec897ecd5444efe19ff2",
        "taker": "0x0681e844593a051e2882ec897ecd5444efe19ff2",
        "takerAssetDataV2": "0xf47261b0000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
        "takerAssetFilledAmount": "2110010000000000",
        "takerFeePaid": "0"
      },
      {
        "__typename": "FilledOrder",
        "feeRecipient": "0x8124071f810d533ff63de61d0c98db99eeb99d64",
        "id": "0xba583c97f2dd534993b229329ff4bf851e6cf12ea15b889aafd1f288bee82f39",
        "maker": "0x322f68d55eab8e2e98e573519c60930797892d25",
        "makerAssetDataV2": "0xf47261b0000000000000000000000000e45b7cd82ac0f3f6cfc9ecd165b79d6f87ed2875",
        "makerAssetFilledAmount": "2768827972093705",
        "makerFeePaid": "0",
        "senderV2": "0x0681e844593a051e2882ec897ecd5444efe19ff2",
        "taker": "0x0681e844593a051e2882ec897ecd5444efe19ff2",
        "takerAssetDataV2": "0xf47261b0000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
        "takerAssetFilledAmount": "2712000000000000000000",
        "takerFeePaid": "0"
      },
      ...
    ]
  },
  "loading": false,
  "networkStatus": 7,
  "stale": false,
  "totalEntries": 50
}

Get Cancel Events

Get 50 cancel events on version 2 of the 0x protocol, filtered by makerAssetData and takerAssetData

const CancelEvents = await client.getCancelEventsAsync(50, {
  // Filter arguments
  makerAssetDataV2: "0xf47261b000000000000000000000000022365168c8705e95b2d08876c23a8c13e3ad72e2",
  takerAssetDataV2: "0xf47261b0000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
  ...
});

Example output:

{
  "data": {
    "cancelledOrders": [
      {
        "__typename": "CancelledOrder",
        "feeRecipient": "0x0000000000000000000000000000000000000000",
        "id": "0xf8bdd90394afc6d2c8c2da63fc447e42414811e024fb658a0ca46852adf748b8",
        "maker": "0x7284bfcad25b9d16c5bacf72783c8a16bde5763b",
        "makerAssetDataV2": "0xf47261b000000000000000000000000022365168c8705e95b2d08876c23a8c13e3ad72e2",
        "senderV2": "0x7284bfcad25b9d16c5bacf72783c8a16bde5763b",
        "takerAssetDataV2": "0xf47261b0000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2"
      },
      {
        "__typename": "CancelledOrder",
        "feeRecipient": "0x0000000000000000000000000000000000000000",
        "id": "0xcd912c91059f1de6bb3aa6baa2c3d521a891723ea0120480f491287ed086a119",
        "maker": "0xbf8d14e03394eac425caa7ea6eb5de3fd766cfd4",
        "makerAssetDataV2": "0xf47261b000000000000000000000000022365168c8705e95b2d08876c23a8c13e3ad72e2",
        "senderV2": "0xbf8d14e03394eac425caa7ea6eb5de3fd766cfd4",
        "takerAssetDataV2": "0xf47261b0000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2"
      },
      ...
    ]
  },
  "loading": false,
  "networkStatus": 7,
  "stale": false,
  "totalEntries": 50
}

TODO

• Handle ordering
• Support version 1 of the 0x exchange contract
• Support Rinkeby and Kovan