prettyirrelevant/bridgebloc

Experience hassle-free token movement across EVM compatible chains

bridgebloc's Issues

add LxLy bridge implementation for backend

Overview

#8 has the boilerplate code for EVMAggregator and EVMClient so you can reuse that for your LxLy implementation.

Things to Note

1. The serializer, LxLyTokenConversionInitialisationSerializer that validates the tx_hash and chain of the bridging process.
2. An enum that represent the steps of the LxLy bridging process. Use CircleAPIConversionStepType as inspiration.
3. The background jobs to monitor every step of the bridging.

Hints

For the serializer part, here are certain checks.

• check from

• check source chain

• check source token

• check destination chain

• check destination token

• check the address is the contract deployed by us

• To verify that an event exists for a tx receipt

        cross_chain_bridge_contract = client.get_contract(
            name='CrossChainBridge',
            address='0x0a992d191DEeC32aFe36203Ad87D7d289a738F81',
        )
        token_messenger_contract = client.get_contract(
            name='TokenMessenger',
            address='0x0a992d191DEeC32aFe36203Ad87D7d289a738F81',
        )

        found_bridge_events = cross_chain_bridge_contract.events.BridgeDepositReceived().process_receipt(
            receipt, errors=DISCARD
        )
        if len(found_bridge_events) == 0 or len(found_bridge_events) > 1:
            raise serializers.ValidationError(
                f'Expected just one `BridgeDepositReceived` event, got {len(found_bridge_events)}'
            )

• To get the EVMClient for a particular chain

evm_client = EVMAggregator().get_client(chain)

• Helpful env variables

SECRET_KEY="django-insecure-0i*m8syiir!bcgzas#5riq8&pic+m*jbiex&(zi^gnb@(xf^&g"
DATABASE_URL=sqlite:///db.sqlite3
HUEY_REDIS_URL=redis://localhost:6379
HUEY_IMMEDIATE=0
DJANGO_SETTINGS_MODULE=bridgebloc.conf.settings
DEBUG=1
ALLOWED_HOSTS=localhost,127.0.0.1
CIRCLE_SANDBOX_API_KEY=SAND_API_KEY:e2afe1f631722927b89ee5282fa6e559:3c1309e4a895933c679b5afe10fd91d5
CIRCLE_SANDBOX_BASE_URL=https://api-sandbox.circle.com
CIRCLE_LIVE_API_KEY=live-key
CIRCLE_LIVE_BASE_URL=https://api.circle.com
CIRCLE_MASTER_WALLET_ID=1016603050
ETHEREUM_RPC_NODES=https://eth.llamarpc.com
AVALANCHE_RPC_NODES=https://avalanche-c-chain.publicnode.com
POLYGON_POS_RPC_NODES=https://polygon.llamarpc.com
ARBITRUM_ONE_RPC_NODES=https://arbitrum-one.publicnode.com
POLYGON_ZKEVM_RPC_NODES=https://zkevm-rpc.com
ETHEREUM_TESTNET_RPC_NODES=https://ethereum-goerli.publicnode.com
AVALANCHE_TESTNET_RPC_NODES=https://avalanche-fuji-c-chain.publicnode.com
POLYGON_POS_TESTNET_RPC_NODES=https://polygon-mumbai-bor.publicnode.com
ARBITRUM_ONE_TESTNET_RPC_NODES=https://arbitrum-goerli.publicnode.com
POLYGON_ZKEVM_TESTNET_RPC_NODES=https://rpc.public.zkevm-test.net