143 lines
5.4 KiB
Markdown
143 lines
5.4 KiB
Markdown
# bridge
|
|
|
|
[![Build Status][travis-image]][travis-url]
|
|
|
|
[travis-image]: https://travis-ci.org/paritytech/parity-bridge.svg?branch=master
|
|
[travis-url]: https://travis-ci.org/paritytech/parity-bridge
|
|
|
|
simple bridge between ethereum foundation and kovan networks
|
|
|
|
### build
|
|
|
|
```
|
|
cargo build -p bridge-cli --release
|
|
```
|
|
|
|
### cli options
|
|
|
|
```
|
|
Ethereum-Kovan bridge.
|
|
Copyright 2017 Parity Technologies (UK) Limited
|
|
|
|
Usage:
|
|
bridge --config <config> --database <database>
|
|
bridge -h | --help
|
|
|
|
Options:
|
|
-h, --help Display help message and exit.
|
|
```
|
|
|
|
- `--config` - location of the configuration file. configuration file must exist
|
|
- `--database` - location of the database file. if there is no file at specified location, new bridge contracts will be deployed and new database will be created
|
|
|
|
### configuration [file example](./examples/config.toml)
|
|
|
|
```toml
|
|
[mainnet]
|
|
account = "0x006e27b6a72e1f34c626762f3c4761547aff1421"
|
|
ipc = "/Users/marek/Library/Application Support/io.parity.ethereum/jsonrpc.ipc"
|
|
required_confirmations = 0
|
|
|
|
[mainnet.contract]
|
|
bin = "contracts/EthereumBridge.bin"
|
|
|
|
[testnet]
|
|
account = "0x006e27b6a72e1f34c626762f3c4761547aff1421"
|
|
ipc = "/Users/marek/Library/Application Support/io.parity.ethereum/jsonrpc.ipc"
|
|
required_confirmations = 0
|
|
|
|
[testnet.contract]
|
|
bin = "contracts/KovanBridge.bin"
|
|
|
|
[authorities]
|
|
accounts = [
|
|
"0x006e27b6a72e1f34c626762f3c4761547aff1421",
|
|
"0x006e27b6a72e1f34c626762f3c4761547aff1421",
|
|
"0x006e27b6a72e1f34c626762f3c4761547aff1421"
|
|
]
|
|
required_signatures = 2
|
|
|
|
[transactions]
|
|
mainnet_deploy = { gas = 500000 }
|
|
testnet_deploy = { gas = 500000 }
|
|
```
|
|
|
|
#### mainnet options
|
|
|
|
- `mainnet.account` - authority address on the mainnet (**required**)
|
|
- `mainnet.ipc` - path to mainnet parity ipc handle (**required**)
|
|
- `mainnet.contract.bin` - path to the compiled bridge contract (**required**)
|
|
- `mainnet.required_confirmations` - number of confirmation required to consider transaction final on mainnet (default: **12**)
|
|
- `mainnet.poll_interval` - specify how often mainnet node should be polled for changes (in seconds, default: **1**)
|
|
- `mainnet.request_timeout` - specify request timeout (in seconds, default: **5**)
|
|
|
|
#### testnet options
|
|
|
|
- `testnet.account` - authority address on the testnet (**required**)
|
|
- `testnet.ipc` - path to testnet parity ipc handle (**required**)
|
|
- `testnet.contract.bin` - path to the compiled bridge contract (**required**)
|
|
- `testnet.required_confirmations` - number of confirmation required to consider transaction final on testnte (default: **12**)
|
|
- `testnet.poll_interval` - specify how often mainnet node should be polled for changes (in seconds, default: **1**)
|
|
- `testnet.request_timeout` - specify request timeout (in seconds, default: **5**)
|
|
|
|
|
|
#### authorities options
|
|
|
|
- `authorities.account` - all authorities (**required**)
|
|
- `authorities.required_signatures` - number of authorities signatures required to consider action final (**required**)
|
|
|
|
#### transaction options
|
|
|
|
- `transaction.mainnet_deploy.gas` - specify how much gas should be consumed by mainnet contract deploy
|
|
- `transaction.mainnet_deploy.gas_price` - specify gas price for mainnet contract deploy
|
|
- `transaction.testnet_deploy.gas` - specify how much gas should be consumed by testnet contract deploy
|
|
- `transaction.testnet_deploy.gas_price` - specify gas price for mainnet contract deploy
|
|
- `transaction.deposit_relay.gas` - specify how much gas should be consumed by deposit relay
|
|
- `transaction.deposit_relay.gas_price` - specify gas price for deposit relay
|
|
- `transaction.withdraw_confirm.gas` - specify how much gas should be consumed by withdraw confirm
|
|
- `transaction.withdraw_confirm.gas_price` - specify gas price for withdraw confirm
|
|
- `transaction.withdraw_relay.gas` - specify how much gas should be consumed by withdraw relay
|
|
- `transaction.withdraw_relay.gas_price` - specify gas price for withdraw relay
|
|
|
|
### database file format
|
|
|
|
```toml
|
|
mainnet_contract_address = "0x49edf201c1e139282643d5e7c6fb0c7219ad1db7"
|
|
testnet_contract_address = "0x49edf201c1e139282643d5e7c6fb0c7219ad1db8"
|
|
mainnet_deploy = 100
|
|
testnet_deploy = 101
|
|
checked_deposit_relay = 120
|
|
checked_withdraw_relay = 121
|
|
checked_withdraw_confirm = 121
|
|
```
|
|
|
|
**all fields are required**
|
|
|
|
- `mainnet_contract_address` - address of the bridge contract on mainnet
|
|
- `testnet_contract_address` - address of the bridge contract on testnet
|
|
- `mainnet_deploy` - block number at which mainnet contract has been deployed
|
|
- `testnet_deploy` - block number at which testnet contract has been deployed
|
|
- `checked_deposit_relay` - number of the last block for which an authority has relayed deposits to the testnet
|
|
- `checked_withdraw_relay` - number of the last block for which an authority has relayed withdraws to the mainnet
|
|
- `checked_withdraw_confirm` - number of the last block for which an authirty has confirmed withdraw
|
|
|
|
### example run
|
|
|
|
```
|
|
./target/debug/bridge --config examples/config.toml --database db.toml
|
|
```
|
|
|
|
- example run requires a parity instance running
|
|
- this parity instance can be started by running `examples/parity_start.sh`
|
|
- it connects to this parity instance twice. one connection treats the node as `mainnet`, whereas the other as `testnet`
|
|
- by default, parity tries to unlock account generates from seedphrase `this is sparta` - `0x006e27b6a72e1f34c626762f3c4761547aff1421`
|
|
- this is just an example. the 'real world' bridge needs to connect to the two different parity instances
|
|
|
|
### deposit
|
|
|
|
![deposit](./res/deposit.png)
|
|
|
|
### withdraw
|
|
|
|
![withdraw](./res/withdraw.png)
|