lotus/chain/actors/builtin/multisig/message.go

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2020-09-30 19:30:02 +00:00
package multisig
import (
"fmt"
"github.com/minio/blake2b-simd"
"golang.org/x/xerrors"
"github.com/filecoin-project/go-address"
"github.com/filecoin-project/go-state-types/abi"
multisig2 "github.com/filecoin-project/specs-actors/v2/actors/builtin/multisig"
"github.com/filecoin-project/lotus/chain/actors"
"github.com/filecoin-project/lotus/chain/types"
)
func Message(version actors.Version, from address.Address) MessageBuilder {
switch version {
case actors.Version0:
return message0{from}
case actors.Version2:
return message2{message0{from}}
default:
panic(fmt.Sprintf("unsupported actors version: %d", version))
}
}
type MessageBuilder interface {
// Create a new multisig with the specified parameters.
Create(signers []address.Address, threshold uint64,
vestingStart, vestingDuration abi.ChainEpoch,
initialAmount abi.TokenAmount) (*types.Message, error)
// Propose a transaction to the given multisig.
Propose(msig, target address.Address, amt abi.TokenAmount,
method abi.MethodNum, params []byte) (*types.Message, error)
// Approve a multisig transaction. The "hash" is optional.
Approve(msig address.Address, txID uint64, hash *ProposalHashData) (*types.Message, error)
// Cancel a multisig transaction. The "hash" is optional.
Cancel(msig address.Address, txID uint64, hash *ProposalHashData) (*types.Message, error)
}
// this type is the same between v0 and v2
type ProposalHashData = multisig2.ProposalHashData
func txnParams(id uint64, data *ProposalHashData) ([]byte, error) {
params := multisig2.TxnIDParams{ID: multisig2.TxnID(id)}
if data != nil {
if data.Requester.Protocol() != address.ID {
return nil, xerrors.Errorf("proposer address must be an ID address, was %s", data.Requester)
}
if data.Value.Sign() == -1 {
return nil, xerrors.Errorf("proposal value must be non-negative, was %s", data.Value)
}
if data.To == address.Undef {
return nil, xerrors.Errorf("proposed destination address must be set")
}
pser, err := data.Serialize()
if err != nil {
return nil, err
}
hash := blake2b.Sum256(pser)
params.ProposalHash = hash[:]
}
return actors.SerializeParams(&params)
}