Synchronization started

About

Notifies consumer that terminal state synchronization is started.

For more information see AsyncApi documentation

Description

This event is emitted by MetaApi upon initial terminal state synchronization

The message below can be received from the synchronization event.

Name	Type	Required	Description
type	string	Yes	The value of this field will be synchronizationStarted
synchronizationId	string	Yes	Id of the synchronization request
accountId	string	Yes	account id specified in the request
sequenceNumber	number	Yes	an ordinal number of the packet. Increases by 1 with each new packet. Starts with 0 in every new session. Can be used to check for packet loss during synchronization.
sequenceTimestamp	number	Yes	an ordinal number of packets, but this field is increased by a random number in each new packet. Always increases regardless of the session.
specificationsUpdated	boolean		flag indicating that specifications update will be streamed
positionsUpdated	boolean		flag indicating that positions update will be streamed
ordersUpdated	boolean		flag indicating that orders update will be streamed
specificationsHashIndex	number		index number of matching specifications hash
positionsHashIndex	number		index number of matching positions hash
ordersHashIndex	number		index number of matching orders hash

Code example:

import ioClient from 'socket.io-client';

const socket = ioClient('https://mt-client-api-v1.agiliumtrade.agiliumtrade.ai', {
    path: '/ws',
    reconnection: false,
    query: {
        'auth-token': 'token'
    }
});

const request = {
  accountId: '865d3a4d-3803-486d-bdf3-a85679d9fad2',
  type: 'synchronize',
  requestId: '57bfbc9f-108d-4131-a300-5f7d9e69c11b',
  startingDealTime: '2019-01-13T10:29:26.000Z',
  startingHistoryOrderTime: '2019-01-13T10:29:26.000Z'
};

socket.on('connect', () => {
  socket.emit('request', request);
});

socket.on('synchronization', data => {
  console.log(data);
  if (data.type === 'authenticated') {
    request.requestId = uuid.v4();
    socket.emit('request', request);
  }
});

socket.on('processingError', err => {
  console.error(err);
});

An example of a synchronization payload:

{
  "type": "synchronizationStarted",
  "synchronizationId": "57bfbc9f-108d-4131-a300-5f7d9e69c11b",
  "accountId": "865d3a4d-3803-486d-bdf3-a85679d9fad2",
  "specificationsUpdated": true,
  "positionsUpdated": true,
  "ordersUpdated": true
}