On my previous posts about AgX, I have first extracte STEEM/SBD data to calculate their 200 days moving average (AgX factor), and then used this data to draw a chart of the evolution of the price ratio and of the AgX factor itself.
The task was then run manually with npm run start
New Features
- In order to automatize the whole thing I have integrated Express.js framework and set the main route to start fetching data and drawing the chart.
- The call to the the job is secured by a secret token
- If a chart has already been drawn that day, the process aborts
- If a chart has already been drawn that day but the admin wants to override, he can add the parameter
force=trueto the URL
The new flow is as follow:
- API is called
- Authentication is checked thanks to the token
- If Authentication succeeds, check if the chart has already been drawn
- If the chart has not been drawn yet or if the admin forced it, get data from Bittrex API
- Calculate 400 days STEEM/SBD ratio and 200 days AgX factor
- Draw chart
- Store it in public folder
The chart has been improved to follow 
- Factor renamed to AgX
- Tooltip shows today values for AgX and Steem/SBD ratio
Next steps
Next step will probably be the final one and will integrate Steem.js to allow the backend to publish posts containing the AgX information.
Release coming soon!
@stoodkevPosted on Utopian.io - Rewarding Open Source Contributors