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accounts/abi/bind: allow client to specify sender address for call (#3782)

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This commit is contained in:
bas-vk 2017-03-16 12:24:22 +01:00 committed by Felix Lange
parent 4e4e5fca54
commit 6d038e762b
2 changed files with 42 additions and 2 deletions
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3
accounts/abi/bind/base.go
View File

@ -36,6 +36,7 @@ type SignerFn func(types.Signer, common.Address, *types.Transaction) (*types.Tra
// CallOpts is the collection of options to fine tune a contract call request.
type CallOpts struct {
Pending bool // Whether to operate on the pending state or the last known one
From common.Address // Optional the sender address, otherwise the first account is used
Context context.Context // Network context to support cancellation and timeouts (nil = no timeout)
}
@ -108,7 +109,7 @@ func (c *BoundContract) Call(opts *CallOpts, result interface{}, method string,
return err
}
var (
msg = ethereum.CallMsg{To: &c.address, Data: input}
msg = ethereum.CallMsg{From: opts.From, To: &c.address, Data: input}
ctx = ensureContext(opts.Context)
code []byte
output []byte

39
accounts/abi/bind/bind_test.go
View File

@ -408,6 +408,45 @@ var bindTests = []struct {
}
`,
},
// Test that constant functions can be called from an (optional) specified address
{
`CallFrom`,
`
contract CallFrom {
function callFrom() constant returns(address) {
return msg.sender;
}
}
`, `6060604052346000575b6086806100176000396000f300606060405263ffffffff60e060020a60003504166349f8e98281146022575b6000565b34600057602c6055565b6040805173ffffffffffffffffffffffffffffffffffffffff9092168252519081900360200190f35b335b905600a165627a7a72305820aef6b7685c0fa24ba6027e4870404a57df701473fe4107741805c19f5138417c0029`,
`[{"constant":true,"inputs":[],"name":"callFrom","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"}]`,
`
// Generate a new random account and a funded simulator
key, _ := crypto.GenerateKey()
auth := bind.NewKeyedTransactor(key)
sim := backends.NewSimulatedBackend(core.GenesisAccount{Address: auth.From, Balance: big.NewInt(10000000000)})
// Deploy a sender tester contract and execute a structured call on it
_, _, callfrom, err := DeployCallFrom(auth, sim)
if err != nil {
t.Fatalf("Failed to deploy sender contract: %v", err)
}
sim.Commit()
if res, err := callfrom.CallFrom(nil); err != nil {
t.Errorf("Failed to call constant function: %v", err)
} else if res != (common.Address{}) {
t.Errorf("Invalid address returned, want: %x, got: %x", (common.Address{}), res)
}
for _, addr := range []common.Address{common.Address{}, common.Address{1}, common.Address{2}} {
if res, err := callfrom.CallFrom(&bind.CallOpts{From: addr}); err != nil {
t.Fatalf("Failed to call constant function: %v", err)
} else if res != addr {
t.Fatalf("Invalid address returned, want: %x, got: %x", addr, res)
}
}
`,
},
}
// Tests that packages generated by the binder can be successfully compiled and