VITALIK

Geth example of EMV contract listener that executues upon received real time events:

1. BQ data insterts from contarcts logs and read funcs
2. reads from contract to check logs vs contracts state vars
3. publish messages to GCPs PUB/SUB
4. receives messages from GCPs PUB/SUB
5. writes to the contracts given received params

smart-contract abi example is deployed and verified on:

• polygon-mumbai

• polygon-mainnet

• bsc-testnet

• bsc-mainnet

logic

• smart contract allows users to save for a specific goal, which funds are stored in the contaratcs escrow
• users can scheule multiple payments subcriptions against these goals
• built in order to execute off-chain inetgrators as per scheduled plan and provide business analytics

dependencies:

• PRIVATE_KEY="xxx" in .env
• GCP_worker.json in global with rights to read/write to PUB/SUB and BQ
• BQ-TABLES as per schema
• topic-sub as pub/sub topic
• gcp-project-id-sub as pub/sub topic

run:

• logs listener, contract reader ,bq inserter and pubsub publishergo run cmd/sub/main.go -config=POLYGON-USDC-PROD | -config=POLYGON-USDC-TEST
• pubsub listerner and contaract writergo run cmd/pub/main.go