128 lines
3.5 KiB
Go
128 lines
3.5 KiB
Go
package paychmgr
|
|
|
|
import (
|
|
"bytes"
|
|
"context"
|
|
"fmt"
|
|
|
|
"github.com/filecoin-project/specs-actors/actors/builtin"
|
|
init_ "github.com/filecoin-project/specs-actors/actors/builtin/init"
|
|
"github.com/filecoin-project/specs-actors/actors/builtin/paych"
|
|
"github.com/ipfs/go-cid"
|
|
"golang.org/x/xerrors"
|
|
|
|
"github.com/filecoin-project/go-address"
|
|
|
|
"github.com/filecoin-project/lotus/chain/actors"
|
|
"github.com/filecoin-project/lotus/chain/types"
|
|
)
|
|
|
|
func (pm *Manager) createPaych(ctx context.Context, from, to address.Address, amt types.BigInt) (address.Address, cid.Cid, error) {
|
|
params, aerr := actors.SerializeParams(&paych.ConstructorParams{From: from, To: to})
|
|
if aerr != nil {
|
|
return address.Undef, cid.Undef, aerr
|
|
}
|
|
|
|
enc, aerr := actors.SerializeParams(&init_.ExecParams{
|
|
CodeCID: builtin.PaymentChannelActorCodeID,
|
|
ConstructorParams: params,
|
|
})
|
|
if aerr != nil {
|
|
return address.Undef, cid.Undef, aerr
|
|
}
|
|
|
|
msg := &types.Message{
|
|
To: builtin.InitActorAddr,
|
|
From: from,
|
|
Value: amt,
|
|
Method: builtin.MethodsInit.Exec,
|
|
Params: enc,
|
|
GasLimit: types.NewInt(1000000),
|
|
GasPrice: types.NewInt(0),
|
|
}
|
|
|
|
smsg, err := pm.mpool.MpoolPushMessage(ctx, msg)
|
|
if err != nil {
|
|
return address.Undef, cid.Undef, xerrors.Errorf("initializing paych actor: %w", err)
|
|
}
|
|
|
|
mcid := smsg.Cid()
|
|
|
|
// TODO: wait outside the store lock!
|
|
// (tricky because we need to setup channel tracking before we know it's address)
|
|
mwait, err := pm.state.StateWaitMsg(ctx, mcid)
|
|
if err != nil {
|
|
return address.Undef, cid.Undef, xerrors.Errorf("wait msg: %w", err)
|
|
}
|
|
|
|
if mwait.Receipt.ExitCode != 0 {
|
|
return address.Undef, cid.Undef, fmt.Errorf("payment channel creation failed (exit code %d)", mwait.Receipt.ExitCode)
|
|
}
|
|
|
|
var decodedReturn init_.ExecReturn
|
|
err = decodedReturn.UnmarshalCBOR(bytes.NewReader(mwait.Receipt.Return))
|
|
if err != nil {
|
|
return address.Undef, cid.Undef, err
|
|
}
|
|
paychaddr := decodedReturn.RobustAddress
|
|
|
|
ci, err := pm.loadOutboundChannelInfo(ctx, paychaddr)
|
|
if err != nil {
|
|
return address.Undef, cid.Undef, xerrors.Errorf("loading channel info: %w", err)
|
|
}
|
|
|
|
if err := pm.store.trackChannel(ci); err != nil {
|
|
return address.Undef, cid.Undef, xerrors.Errorf("tracking channel: %w", err)
|
|
}
|
|
|
|
return paychaddr, mcid, nil
|
|
}
|
|
|
|
func (pm *Manager) addFunds(ctx context.Context, ch address.Address, from address.Address, amt types.BigInt) error {
|
|
msg := &types.Message{
|
|
To: ch,
|
|
From: from,
|
|
Value: amt,
|
|
Method: 0,
|
|
GasLimit: types.NewInt(1000000),
|
|
GasPrice: types.NewInt(0),
|
|
}
|
|
|
|
smsg, err := pm.mpool.MpoolPushMessage(ctx, msg)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
mwait, err := pm.state.StateWaitMsg(ctx, smsg.Cid()) // TODO: wait outside the store lock!
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if mwait.Receipt.ExitCode != 0 {
|
|
return fmt.Errorf("voucher channel creation failed: adding funds (exit code %d)", mwait.Receipt.ExitCode)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (pm *Manager) GetPaych(ctx context.Context, from, to address.Address, ensureFree types.BigInt) (address.Address, cid.Cid, error) {
|
|
pm.store.lk.Lock()
|
|
defer pm.store.lk.Unlock()
|
|
|
|
ch, err := pm.store.findChan(func(ci *ChannelInfo) bool {
|
|
if ci.Direction != DirOutbound {
|
|
return false
|
|
}
|
|
return ci.Control == from && ci.Target == to
|
|
})
|
|
if err != nil {
|
|
return address.Undef, cid.Undef, xerrors.Errorf("findChan: %w", err)
|
|
}
|
|
if ch != address.Undef {
|
|
// TODO: Track available funds
|
|
return ch, cid.Undef, pm.addFunds(ctx, ch, from, ensureFree)
|
|
}
|
|
|
|
return pm.createPaych(ctx, from, to, ensureFree)
|
|
}
|