Cache Updater Overview

Neutrino Cache updater is golang script that manages data parsing from waves blockchain to well-understood database models.

The idea behind this script to manage rapidly changing and scalable data (Neutrino Auction and Liquidate orders) up-to-date.

Scripts reference

process.sh

Process file that builds systemd service and starts it. Includes various parameters. For default behaviour use --build-n-start. Default systemd service name is neutrino-cache-daemon. Can be override using --service param.

bash ./process.sh --build-n-start

typegen.sh

Generates types into swagger-types directory depending on models declared in swagger.json provided by https://nodes.wavesplatform.com

bash ./typegen.sh

migrations.sh

Manages migrations. Including initial table declaring and dropping. possible params: --init-migration, --run-migration, --reset-migration

Note: go-pg library create it's own table for managing migration stage

Deployment

1. Firstly, we run migration, if database is empty.

bash ./migrations.sh --run-migration

2. Compile go

go build

3. Setup and start systemd service

bash ./process.sh --build-n-start

4. Check status

systemctl status neutrino-cache-daemon

Environment file ref

Param	Desired Value	Description
DB_USERNAME	string	postgres username
DB_PASS	string	postgres pass
DB_NAME	string	Database name
NODE_URL	URL	Waves Full Node URL
DAPP_ADDRESS	waves address	Neutrino Auction Contract Address
DB_HOST	string	Database host
DB_PORT	string	Database port
UPDATE_FREQUENCY	Milliseconds	Table update frequency