Struct DsProxy 

pub struct DsProxy { /* private fields */ }

Represents the DsProxy type that implements the Transformer trait.

Example

use ethers_middleware::{SignerMiddleware, transformer::DsProxy};
use ethers_signers::LocalWallet;
use ethers_providers::{Provider, Http};
use ethers_core::types::{Address, Bytes};
use std::{convert::TryFrom, sync::Arc};

type HttpWallet = SignerMiddleware<Provider<Http>, LocalWallet>;

// instantiate client that can sign transactions.
let wallet: LocalWallet = "380eb0f3d505f087e438eca80bc4df9a7faa24f868e69fc0440261a0fc0567dc"
    .parse()?;
let provider = Provider::<Http>::try_from("http://localhost:8545")?;
let client = SignerMiddleware::new(provider, wallet);

// instantiate DsProxy by providing its address.
let ds_proxy = DsProxy::new(ds_proxy_addr);

// execute a transaction via the DsProxy instance.
let target = Address::random();
let calldata: Bytes = vec![0u8; 32].into();
let contract_call = ds_proxy.execute::<HttpWallet, Arc<HttpWallet>, Address>(
    Arc::new(client),
    target,
    calldata,
)?;
let pending_tx = contract_call.send().await?;
let _tx_receipt = pending_tx.await?;

Implementations

impl DsProxy

pub fn new(address: H160) -> DsProxy

Create a new instance of DsProxy by providing the address of the DsProxy contract that has already been deployed to the Ethereum network.

pub fn address(&self) -> H160

The address of the DsProxy instance.

impl DsProxy

pub async fn build<M, C>( client: C, factory: Option<H160>, owner: H160, ) -> Result<DsProxy, ContractError<M>>

where M: Middleware, C: Into<Arc<M>>,

Deploys a new DsProxy contract to the Ethereum network.

impl DsProxy

pub fn execute<M, C, T>( &self, client: C, target: T, data: Bytes, ) -> Result<FunctionCall<Arc<M>, M, Bytes>, ContractError<M>>

where M: Middleware, C: Into<Arc<M>>, T: Into<AddressOrBytes>,

Execute a tx through the DsProxy instance. The target can either be a deployed smart contract’s address, or bytecode of a compiled smart contract. Depending on the target, the appropriate execute method is called, that is, either execute(address,bytes) or execute(bytes,bytes).

Trait Implementations

impl Clone for DsProxy

fn clone(&self) -> DsProxy

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for DsProxy

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Transformer for DsProxy

fn transform(&self, tx: &mut TypedTransaction) -> Result<(), TransformerError>

Transforms a transaction request into one that can be broadcasted and execute via the proxy contract.