A very simple oracle to track gas prices.
A WebSocketProvider is used to subscribe to the "pending" filter
and the "block" filter.
On each pending transaction hash, its "time seen" added to a database.
On each "block", each transaction in that block has its delta time
computed from the time the transaction was seen to the time it was mined.
The last 100 blocks are then analysed and statistics ensue.
Any blocks or transactions not mined within 2 days are purged to constrain the database size.
/home/ricmoo/gas-ticker> npm start
The result will be dumped to database/gas-price.json.
The node scripts are executed inside a shell script which will automatically restart the node process and the server is deisgned to exit if it detects more than 10s of inactivity.
- CLI option to adjusting the statistic properties (like block count)
- CLI options to change the database location
The MIT License.