**⚠ WARNING: This repository is deprecated. Please visit Aurora Relayer V2.

Aurora Relayer

Implements a JSON-RPC server compatible with Ethereum's Web3 API for Aurora Engine instances deployed on the NEAR Protocol.

Prerequisites

• Docker and Docker Compose

Usage

Usage for Testnet

To run the relayer locally, execute:

NEAR_ENV=testnet docker-compose up

You can customize the configuration by copying config/testnet.yaml to config/local.yaml and editing that file. (The configuration settings in config/local.yaml override the defaults from config/testnet.yaml.)

Usage for Testnet without Docker

1. npm i
2. Install postgresql and create database, example of how to create database
3. Go to indexer directory cd util/indexer
4. Compile indexer binary, go build
5. Return to root directory of the project
6. Run Node.js server NEAR_ENV=testnet node lib/index.js
7. Run indexer sh -c util/indexer/indexer | NEAR_ENV=testnet node lib/indexer_backend.js

Usage for Testnet without Docker and with live changes

To see local changes without restarting the Node.js server, instead of step 6, execute:

NEAR_ENV=testnet npm run start
npm run build:watch

Run local specs

1. Apply mocks to local database sh test/fixtures/mocks_init.sh
2. Run indexer sh -c util/indexer/indexer | NEAR_ENV=testnet node lib/indexer_backend.js
3. Run local specs npm run test

Usage for LocalNet

To run the relayer locally, first start nearcore and then execute:

NEAR_ENV=localnet docker-compose up

You can customize the configuration by copying config/localnet.yaml to config/local.yaml and editing that file. (The configuration settings in config/local.yaml override the defaults from config/localnet.yaml.)

Endpoint URL

The relayer's HTTP endpoint is served up on the TCP port 8545 by default.

For example, you can send a Web3 JSON-RPC request to the endpoint using HTTPie, as follows:

http post http://localhost:8545 jsonrpc=2.0 id=1 method=eth_blockNumber params:='[]'

Configuration

To customize configuration settings, create a config/local.yaml file.

Configuration settings are loaded firstly from config/default.yaml, then from config/$NEAR_ENV.yaml, and lastly from config/local.yaml. Settings in files loaded later override the same settings from files loaded earlier.

Configuring a signing key

To be able to call eth_sendRawTransaction, you must have a NEAR account and signing key on the network you are relaying to, and said NEAR account must have a sufficient Ⓝ balance to be able to send transactions.

To configure the signing account and private key, place the JSON key file into the config/ directory and edit config/local.yaml as follows:

signer: you.testnet
signerKey: config/you.testnet.json

If you're using the NEAR CLI, you will find your signing keys stored as JSON key files under your $HOME/.near-credentials/ directory.

Status

Method	Status	Notes
web3_clientVersion	✅
web3_sha3	✅
net_listening	✅
net_peerCount	✅
net_version	✅
eth_accounts	✅
eth_blockNumber	✅
eth_call	✅
eth_chainId	✅
eth_coinbase	✅
eth_compileLLL	❌	Unsupported
eth_compileSerpent	❌	Unsupported
eth_compileSolidity	❌	Unsupported
eth_estimateGas	✅
eth_gasPrice	✅
eth_getBalance	✅
eth_getBlockByHash	✅
eth_getBlockByNumber	✅
eth_getBlockTransactionCountByHash	✅
eth_getBlockTransactionCountByNumber	✅
eth_getCode	✅
eth_getCompilers	✅
eth_getFilterChanges	✅
eth_getFilterLogs	✅
eth_getLogs	✅
eth_getProof	❌	EIP-1186
eth_getStorageAt	✅
eth_getTransactionByBlockHashAndIndex	✅
eth_getTransactionByBlockNumberAndIndex	✅
eth_getTransactionByHash	✅
eth_getTransactionCount	✅
eth_getTransactionReceipt	✅
eth_getUncleByBlockHashAndIndex	✅
eth_getUncleByBlockNumberAndIndex	✅
eth_getUncleCountByBlockHash	✅
eth_getUncleCountByBlockNumber	✅
eth_getWork	❌	Unsupported
eth_hashrate	✅
eth_mining	✅
eth_newBlockFilter	✅
eth_newFilter	✅
eth_newPendingTransactionFilter	✅
eth_pendingTransactions	✅	Undocumented
eth_protocolVersion	✅
eth_sendRawTransaction	✅
eth_sendTransaction	❌	Unsupported
eth_sign	❌	Unsupported
eth_signTransaction	❌	Unsupported
eth_signTypedData	❌	Unsupported
eth_submitHashrate	❌	Unsupported
eth_submitWork	❌	Unsupported
eth_syncing	✅
eth_uninstallFilter	✅
db_getHex	❌	Deprecated
db_getString	❌	Deprecated
db_putHex	❌	Deprecated
db_putString	❌	Deprecated
shh_addToGroup	❌	Discontinued
shh_getFilterChanges	❌	Discontinued
shh_getMessages	❌	Discontinued
shh_hasIdentity	❌	Discontinued
shh_newFilter	❌	Discontinued
shh_newGroup	❌	Discontinued
shh_newIdentity	❌	Discontinued
shh_post	❌	Discontinued
shh_uninstallFilter	❌	Discontinued
shh_version	❌	Discontinued
txpool_content	✅	Geth extension
txpool_inspect	✅	Geth extension
txpool_status	✅	Geth extension
parity_pendingTransactions	✅	Parity extension

Legend: ❌ = not supported. 🚧 = work in progress. ✅ = supported.

Contributing

1. Clone the repo
2. Create your branch
3. Add your changes
4. Run tests (npm run test, the local server must be running for the tests to pass). Fix if you broke something. Add your own tests
5. Format your code (npm run format)
6. Run linter (npm run lint)
7. Build changes (npm run build)
8. Commit your Changes (git commit -m 'Resolved an issue')
9. Push to the Branch (git push origin new_feature)
10. Open a Pull Request