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swap: use the SimpleSwapFactory for deployment and verification
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,100 @@ | ||
| package swap | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "context" | ||
| "errors" | ||
| "math/big" | ||
|
|
||
| "github.com/ethereum/go-ethereum/accounts/abi/bind" | ||
| "github.com/ethereum/go-ethereum/common" | ||
| contractFactory "github.com/ethersphere/go-sw3/contracts-v0-1-1/simpleswapfactory" | ||
| ) | ||
|
|
||
| var ( | ||
| // ErrNotDeployedByFactory is given when a contract was not deployed by the factory | ||
| ErrNotDeployedByFactory = errors.New("not deployed by factory") | ||
| ) | ||
|
|
||
| type simpleSwapFactory struct { | ||
| instance *contractFactory.SimpleSwapFactory | ||
| address common.Address | ||
| backend Backend | ||
| } | ||
|
|
||
| type SimpleSwapFactory interface { | ||
| DeploySimpleSwap(auth *bind.TransactOpts, issuer common.Address, defaultHardDepositTimeoutDuration *big.Int) (Contract, error) | ||
| VerifyContract(address common.Address) error | ||
| VerifySelf() error | ||
| } | ||
|
|
||
| func FactoryAt(address common.Address, backend Backend) (SimpleSwapFactory, error) { | ||
| simple, err := contractFactory.NewSimpleSwapFactory(address, backend) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| c := simpleSwapFactory{instance: simple, address: address, backend: backend} | ||
| return c, err | ||
| } | ||
|
|
||
| func (sf simpleSwapFactory) VerifySelf() error { | ||
| code, err := sf.backend.CodeAt(context.Background(), sf.address, nil) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| referenceCode := common.FromHex(contractFactory.SimpleSwapFactoryDeployedCode) | ||
| if !bytes.Equal(code, referenceCode) { | ||
| return errors.New("not a valid factory contract") | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
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| func (sf simpleSwapFactory) DeploySimpleSwap(auth *bind.TransactOpts, issuer common.Address, defaultHardDepositTimeoutDuration *big.Int) (Contract, error) { | ||
| auth.GasLimit = 1700000 | ||
| tx, err := sf.instance.DeploySimpleSwap(auth, issuer, defaultHardDepositTimeoutDuration) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| receipt, err := WaitFunc(auth, sf.backend, tx) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| address := common.Address{} | ||
|
|
||
| for _, log := range receipt.Logs { | ||
| if log.Address != sf.address { | ||
| continue | ||
| } | ||
|
|
||
| if event, err := sf.instance.ParseSimpleSwapDeployed(*log); err == nil { | ||
| address = event.ContractAddress | ||
| break | ||
| } | ||
| } | ||
|
|
||
| if (address == common.Address{}) { | ||
| return nil, errors.New("contract deployment failed") | ||
| } | ||
|
|
||
| simpleSwap, err := InstanceAt(address, sf.backend) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return simpleSwap, nil | ||
| } | ||
|
|
||
| func (sf simpleSwapFactory) VerifyContract(address common.Address) error { | ||
| isDeployed, err := sf.instance.DeployedContracts(&bind.CallOpts{}, address) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| if !isDeployed { | ||
| return ErrNotDeployedByFactory | ||
| } | ||
| return nil | ||
| } |
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