80 lines
1.7 KiB
Go
80 lines
1.7 KiB
Go
package market
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import (
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"context"
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"sync"
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"golang.org/x/xerrors"
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"github.com/filecoin-project/go-address"
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"github.com/filecoin-project/lotus/chain/actors"
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"github.com/filecoin-project/lotus/chain/stmgr"
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"github.com/filecoin-project/lotus/chain/types"
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"github.com/filecoin-project/lotus/node/impl/full"
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)
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type FundMgr struct {
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sm *stmgr.StateManager
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mpool full.MpoolAPI
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lk sync.Mutex
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available map[address.Address]types.BigInt
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}
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func NewFundMgr(sm *stmgr.StateManager, mpool full.MpoolAPI) *FundMgr {
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return &FundMgr{
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sm: sm,
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mpool: mpool,
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available: map[address.Address]types.BigInt{},
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}
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}
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func (fm *FundMgr) EnsureAvailable(ctx context.Context, addr address.Address, amt types.BigInt) error {
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fm.lk.Lock()
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avail, ok := fm.available[addr]
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if !ok {
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bal, err := fm.sm.MarketBalance(ctx, addr, nil)
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if err != nil {
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fm.lk.Unlock()
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return err
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}
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avail = types.BigSub(bal.Escrow, bal.Locked)
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}
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toAdd := types.NewInt(0)
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avail = types.BigSub(avail, amt)
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if avail.LessThan(types.NewInt(0)) {
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// TODO: some rules around adding more to avoid doing stuff on-chain
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// all the time
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toAdd = types.BigSub(toAdd, avail)
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avail = types.NewInt(0)
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}
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fm.available[addr] = avail
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fm.lk.Unlock()
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smsg, err := fm.mpool.MpoolPushMessage(ctx, &types.Message{
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To: actors.StorageMarketAddress,
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From: addr,
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Value: toAdd,
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GasPrice: types.NewInt(0),
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GasLimit: types.NewInt(1000000),
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Method: actors.SMAMethods.AddBalance,
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})
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if err != nil {
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return err
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}
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_, r, err := fm.sm.WaitForMessage(ctx, smsg.Cid())
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if err != nil {
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return err
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}
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if r.ExitCode != 0 {
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return xerrors.Errorf("adding funds to storage miner market actor failed: exit %d", r.ExitCode)
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}
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return nil
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}
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