nft-metadata-watcher

// TODO: add Dockerfile, kubernetes-deployment files. // TODO: secure privateKey in /data directory // TODO: fire error log to chat app for monitoring. // TODO: optimize get nonce to speedup send transactions. (DONE optimization ver 1) // TODO: check nonce conflict. (DONE use transaction creator to get nonce)

Enviroment variable description:

POLYGON_URL POLYGON_CHAIN_ID POLYGON_NETWORK_ID

• Polygon RPC and chain info.

POLYGON_SCAN_FROM_BACK_LATEST_BLOCK

• Start scan from (latest_block - back_block)

POLYGON_SCAN_START_BLOCK

• Set scan from block manually. If this env variable is not empty, it'll overide POLYGON_SCAN_FROM_BACK_LATEST_BLOCK flow.

POLYGON_DELAY_CONFIRMED_BLOCKS

• Scan to (latest_block - delay_block)

POLYGON_SLEEP_TIME

• When not finding newest block, sleep for miliseconds.

BSC_xxx env variables are similar to polygon counterparts.

Contract ABI and event info

Look at src/contracts directory.

Local:

yarn install

# Run in another terminal
docker-compose up

# Prepare account signer private key and address
# ./accounts/signer/privateKey - Storing account private key plain text.
# ./accounts/signer/address -Storing account address plain text.

# Set appropriate environments variables in .env.development file.

# Run polygon watcher
yarn start:polygon_logs_watcher:dev

# Open another terminal, run bsc watcher
yarn start:bsc_logs_watcher:dev

# Open another terminal, run transaction creator
yarn start:transaction_creator:dev

Production:

yarn install

# Prepare account signer private key and address
# ./accounts/signer/privateKey - Storing account private key plain text.
# ./accounts/signer/address -Storing account address plain text.

# Build
yarn build

# Set appropriate environments variables in .env.production file.

# Run polygon watcher
yarn start:polygon_logs_watcher:prod

# Open another terminal, run bsc watcher
yarn start:bsc_logs_watcher:prod

# Open another terminal, run transaction creator
yarn start:transaction_creator:prod