Spot exectution

[zed-wong]

Made some progress on vercel adaption Added fetching mixin withdrawal fee Added fetching bigone withdrawal fee Added compare cheapest withdrawal fee Added test for above Organizing a feasible structure for order processing

[zed-wong]

• Snapshot scheduler (loop snapshots):

  1. Check if snapshot id in db
  2. Update or create timestamp in db
  3. Decode memo, refund if memo format check failed
  4. Emit event based on memo format, write snapshot to snapshot table

• Spot event handler

  1. Check parameters legitimacy
  2. Check balance in exchange
  3. Check balance in mixin
  4. Generate and write order to db
  5. Emit event to 'exchange place order' event handler

• Config service

  1. Manage all the configuration by API
  2. Expose API Key function
  3. Support multiply API keys

• Exchange module

  1. Get API keys from config service
  2. Maintain an update to date balance map
  3. Check balance by exchange and pair
  4. Place order function

• Spot order status updater scheduler

  1. Update all order status in db
  2. Check order status
  3. Emit event to 'mixin release token' event handler if previous processes are done

• Mixin release token event handler

  1. Check parameters legitimacy
  2. Check funds available
  3. Check release history to avoid double spend
  4. Release token

• Exchange place order event handler

  1. Check parameters legitimacy
  2. Check funds available
  3. Pick API key
  4. Place order

[zed-wong]

Tests

• [x] Tests for all services
• [x] Tests for all listeners
• [ ] Logic test
• [ ] Manual test

Order related API

• [x] Get order status by traceID