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Georgios Konstantopoulos 2020-05-24 21:56:10 +03:00
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Provider model
# ethers.rs
should be usable both for tests and for normal actions
Complete Ethereum wallet implementation and utilities in Rust (with WASM and FFI support).
## Features
Features
- [ ] Keep your private keys in your client, safe and sound
- [ ] Import and export JSON wallets (Geth, Parity and crowdsale)
- [ ] Import and export BIP 39 mnemonic phrases (12 word backup phrases) and HD Wallets (English, Italian, Japanese, Korean, Simplified Chinese, Traditional Chinese; more coming soon)
- [ ] Meta-classes create JavaScript objects from any contract ABI, including ABIv2 and Human-Readable ABI
- [ ] Connect to Ethereum nodes over JSON-RPC, INFURA, Etherscan, Alchemy, Cloudflare or MetaMask.
- [ ] ENS names are first-class citizens; they can be used anywhere an Ethereum addresses can be used
- [ ] Tiny (~88kb compressed; 284kb uncompressed)
- [ ] Complete functionality for all your Ethereum needs
- [ ] Extensive documentation
- [ ] Large collection of test cases which are maintained and added to
- [ ] Fully TypeScript ready, with definition files and full TypeScript source
- [ ] MIT License (including ALL dependencies); completely open source to do with as you please
- [ ] Compatible with ethers.js and Metamask web3 providers via WASM
- Calls by default are made async -> provide a synchronous API
- [x] User friendly transaction APIs
- [x] Type-safe EIP-155 transactions
- [ ] Event Monitoring
- [ ] Deploy and interact with smart contracts
- [ ] Type safe smart contract bindings
- [ ] Hardware wallet support
- [ ] ...
## Examples
- Provider
- Signer
- Contract
- Choice of BigNumber library? Probably the ones in ethabi
- Human readable ABI very important
- https://docs-beta.ethers.io/getting-started/
- Supports IN-EVM Testing -> SUPER fast tests which are ALSO typesafe
- build.rs type safe methods
### Sending a transaction with an offline key
This library is inspired by the APIs of Riemann Ether and Ethers https://github.com/summa-tx/riemann-ether#development
```rust
use ethers::{types::TransactionRequest, HttpProvider, MainnetWallet};
use std::convert::TryFrom;
- Listening to events via HTTP polls, while WS push/pulls -> look at rust-web3
// connect to the network
let provider = HttpProvider::try_from("http://localhost:8545")?;
- Async std futures 1.0 RPC calls for everything `rpc_impl!` using reqwest and mockito
// create a wallet and connect it to the provider
let client = "15c42bf2987d5a8a73804a8ea72fb4149f88adf73e98fc3f8a8ce9f24fcb7774"
.parse::<MainnetWallet>()?
.connect(&provider);
https://github.com/ethers-io/ethers.js/blob/ethers-v5-beta/packages/contracts/src.ts/index.ts#L721
// craft the transaction using the builder pattern
let tx = TransactionRequest::new()
.send_to_str("986eE0C8B91A58e490Ee59718Cca41056Cf55f24")?
.value(10000);
- Wallet
// send it!
let tx = client.sign_and_send_transaction(tx, None).await?;
ethers::wallet::new().connect(provider)
::get_default_provider()
// get the mined tx
let tx = client.get_transaction(tx.hash).await?;
println!("{}", serde_json::to_string(&tx)?);
```