511 lines
14 KiB
Go
511 lines
14 KiB
Go
package actors
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import (
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"context"
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"fmt"
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"github.com/filecoin-project/go-lotus/build"
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"github.com/filecoin-project/go-lotus/chain/actors/aerrors"
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"github.com/filecoin-project/go-lotus/chain/address"
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"github.com/filecoin-project/go-lotus/chain/types"
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cid "github.com/ipfs/go-cid"
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hamt "github.com/ipfs/go-hamt-ipld"
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"github.com/libp2p/go-libp2p-core/peer"
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cbg "github.com/whyrusleeping/cbor-gen"
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xerrors "golang.org/x/xerrors"
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)
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type StorageMarketActor struct{}
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type smaMethods struct {
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Constructor uint64
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CreateStorageMiner uint64
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ArbitrateConsensusFault uint64
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UpdateStorage uint64
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GetTotalStorage uint64
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PowerLookup uint64
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IsMiner uint64
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PledgeCollateralForSize uint64
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}
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var SMAMethods = smaMethods{1, 2, 3, 4, 5, 6, 7, 8}
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func (sma StorageMarketActor) Exports() []interface{} {
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return []interface{}{
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//1: sma.StorageMarketConstructor,
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2: sma.CreateStorageMiner,
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3: sma.ArbitrateConsensusFault,
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4: sma.UpdateStorage,
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5: sma.GetTotalStorage,
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6: sma.PowerLookup,
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7: sma.IsMiner,
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8: sma.PledgeCollateralForSize,
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}
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}
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type StorageMarketState struct {
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Miners cid.Cid
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MinerCount uint64
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TotalStorage types.BigInt
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}
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type CreateStorageMinerParams struct {
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Owner address.Address
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Worker address.Address
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SectorSize types.BigInt
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PeerID peer.ID
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}
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func (sma StorageMarketActor) CreateStorageMiner(act *types.Actor, vmctx types.VMContext, params *CreateStorageMinerParams) ([]byte, ActorError) {
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if !SupportedSectorSize(params.SectorSize) {
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return nil, aerrors.New(1, "Unsupported sector size")
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}
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var self StorageMarketState
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old := vmctx.Storage().GetHead()
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if err := vmctx.Storage().Get(old, &self); err != nil {
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return nil, err
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}
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reqColl, err := pledgeCollateralForSize(vmctx, types.NewInt(0), self.TotalStorage, self.MinerCount+1)
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if err != nil {
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return nil, err
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}
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if types.BigCmp(vmctx.Message().Value, reqColl) < 0 {
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return nil, aerrors.Newf(1, "not enough funds passed to cover required miner collateral (needed %s, got %s)", reqColl, vmctx.Message().Value)
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}
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encoded, err := CreateExecParams(StorageMinerCodeCid, &StorageMinerConstructorParams{
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Owner: params.Owner,
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Worker: params.Worker,
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SectorSize: params.SectorSize,
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PeerID: params.PeerID,
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})
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if err != nil {
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return nil, err
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}
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ret, err := vmctx.Send(InitActorAddress, IAMethods.Exec, vmctx.Message().Value, encoded)
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if err != nil {
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return nil, err
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}
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naddr, nerr := address.NewFromBytes(ret)
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if nerr != nil {
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return nil, aerrors.Absorb(nerr, 2, "could not read address of new actor")
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}
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ncid, err := MinerSetAdd(context.TODO(), vmctx, self.Miners, naddr)
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if err != nil {
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return nil, err
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}
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self.Miners = ncid
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self.MinerCount++
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nroot, err := vmctx.Storage().Put(&self)
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if err != nil {
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return nil, err
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}
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if err := vmctx.Storage().Commit(old, nroot); err != nil {
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return nil, err
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}
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return naddr.Bytes(), nil
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}
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func SupportedSectorSize(ssize types.BigInt) bool {
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if ssize.Uint64() == build.SectorSize {
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return true
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}
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return false
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}
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type ArbitrateConsensusFaultParams struct {
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Block1 *types.BlockHeader
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Block2 *types.BlockHeader
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}
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func (sma StorageMarketActor) ArbitrateConsensusFault(act *types.Actor, vmctx types.VMContext, params *ArbitrateConsensusFaultParams) ([]byte, ActorError) {
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if params.Block1.Miner != params.Block2.Miner {
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return nil, aerrors.New(2, "blocks must be from the same miner")
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}
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rval, err := vmctx.Send(params.Block1.Miner, MAMethods.GetWorkerAddr, types.NewInt(0), nil)
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if err != nil {
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return nil, aerrors.Wrap(err, "failed to get miner worker")
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}
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worker, oerr := address.NewFromBytes(rval)
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if oerr != nil {
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// REVIEW: should this be fatal? i can't think of a real situation that would get us here
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return nil, aerrors.Absorb(oerr, 3, "response from 'GetWorkerAddr' was not a valid address")
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}
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if err := params.Block1.CheckBlockSignature(worker); err != nil {
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return nil, aerrors.Absorb(err, 4, "block1 did not have valid signature")
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}
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if err := params.Block2.CheckBlockSignature(worker); err != nil {
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return nil, aerrors.Absorb(err, 5, "block2 did not have valid signature")
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}
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// see the "Consensus Faults" section of the faults spec (faults.md)
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// for details on these slashing conditions.
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if !shouldSlash(params.Block1, params.Block2) {
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return nil, aerrors.New(6, "blocks do not prove a slashable offense")
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}
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var self StorageMarketState
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old := vmctx.Storage().GetHead()
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if err := vmctx.Storage().Get(old, &self); err != nil {
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return nil, err
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}
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if types.BigCmp(self.TotalStorage, types.NewInt(0)) == 0 {
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return nil, aerrors.Fatal("invalid state, storage market actor has zero total storage")
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}
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miner := params.Block1.Miner
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if has, err := MinerSetHas(context.TODO(), vmctx, self.Miners, miner); err != nil {
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return nil, aerrors.Wrapf(err, "failed to check miner in set")
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} else if !has {
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return nil, aerrors.New(7, "either already slashed or not a miner")
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}
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minerPower, err := powerLookup(context.TODO(), vmctx, &self, miner)
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if err != nil {
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return nil, err
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}
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slashedCollateral, err := pledgeCollateralForSize(vmctx, minerPower, self.TotalStorage, self.MinerCount)
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if err != nil {
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return nil, err
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}
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enc, err := SerializeParams(&MinerSlashConsensusFault{
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Slasher: vmctx.Message().From,
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AtHeight: params.Block1.Height,
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SlashedCollateral: slashedCollateral,
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})
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if err != nil {
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return nil, err
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}
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_, err = vmctx.Send(miner, MAMethods.SlashConsensusFault, types.NewInt(0), enc)
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if err != nil {
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return nil, err
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}
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// Remove the miner from the list of network miners
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ncid, err := MinerSetRemove(context.TODO(), vmctx, self.Miners, miner)
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if err != nil {
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return nil, err
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}
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self.Miners = ncid
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self.MinerCount--
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self.TotalStorage = types.BigSub(self.TotalStorage, minerPower)
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nroot, err := vmctx.Storage().Put(&self)
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if err != nil {
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return nil, err
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}
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if err := vmctx.Storage().Commit(old, nroot); err != nil {
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return nil, err
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}
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return nil, nil
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}
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func cidArrContains(a []cid.Cid, b cid.Cid) bool {
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for _, c := range a {
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if b == c {
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return true
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}
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}
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return false
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}
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func shouldSlash(block1, block2 *types.BlockHeader) bool {
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// First slashing condition, blocks have the same ticket round
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if block1.Height == block2.Height {
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return true
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}
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/* Second slashing condition requires having access to the parent tipset blocks
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// This might not always be available, needs some thought on the best way to deal with this
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// Second slashing condition, miner ignored own block when mining
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// Case A: block2 could have been in block1's parent set but is not
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b1ParentHeight := block1.Height - len(block1.Tickets)
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block1ParentTipSet := block1.Parents
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if !cidArrContains(block1.Parents, block2.Cid()) &&
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b1ParentHeight == block2.Height &&
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block1ParentTipSet.ParentCids == block2.ParentCids {
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return true
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}
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// Case B: block1 could have been in block2's parent set but is not
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block2ParentTipSet := parentOf(block2)
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if !block2Parent.contains(block1) &&
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block2ParentTipSet.Height == block1.Height &&
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block2ParentTipSet.ParentCids == block1.ParentCids {
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return true
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}
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*/
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return false
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}
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type UpdateStorageParams struct {
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Delta types.BigInt
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}
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func (sma StorageMarketActor) UpdateStorage(act *types.Actor, vmctx types.VMContext, params *UpdateStorageParams) ([]byte, ActorError) {
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var self StorageMarketState
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old := vmctx.Storage().GetHead()
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if err := vmctx.Storage().Get(old, &self); err != nil {
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return nil, err
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}
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has, err := MinerSetHas(context.TODO(), vmctx, self.Miners, vmctx.Message().From)
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if err != nil {
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return nil, err
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}
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if !has {
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return nil, aerrors.New(1, "update storage must only be called by a miner actor")
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}
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self.TotalStorage = types.BigAdd(self.TotalStorage, params.Delta)
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nroot, err := vmctx.Storage().Put(&self)
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if err != nil {
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return nil, err
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}
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if err := vmctx.Storage().Commit(old, nroot); err != nil {
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return nil, err
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}
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return nil, nil
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}
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func (sma StorageMarketActor) GetTotalStorage(act *types.Actor, vmctx types.VMContext, params *struct{}) ([]byte, ActorError) {
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var self StorageMarketState
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if err := vmctx.Storage().Get(vmctx.Storage().GetHead(), &self); err != nil {
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return nil, err
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}
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return self.TotalStorage.Bytes(), nil
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}
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type PowerLookupParams struct {
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Miner address.Address
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}
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func (sma StorageMarketActor) PowerLookup(act *types.Actor, vmctx types.VMContext, params *PowerLookupParams) ([]byte, ActorError) {
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var self StorageMarketState
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if err := vmctx.Storage().Get(vmctx.Storage().GetHead(), &self); err != nil {
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return nil, aerrors.Wrap(err, "getting head")
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}
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pow, err := powerLookup(context.TODO(), vmctx, &self, params.Miner)
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if err != nil {
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return nil, err
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}
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return pow.Bytes(), nil
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}
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func powerLookup(ctx context.Context, vmctx types.VMContext, self *StorageMarketState, miner address.Address) (types.BigInt, ActorError) {
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has, err := MinerSetHas(context.TODO(), vmctx, self.Miners, miner)
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if err != nil {
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return types.EmptyInt, err
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}
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if !has {
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return types.EmptyInt, aerrors.New(1, "miner not registered with storage market")
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}
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ret, err := vmctx.Send(miner, MAMethods.GetPower, types.NewInt(0), nil)
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if err != nil {
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return types.EmptyInt, aerrors.Wrap(err, "invoke Miner.GetPower")
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}
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return types.BigFromBytes(ret), nil
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}
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type IsMinerParam struct {
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Addr address.Address
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}
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func (sma StorageMarketActor) IsMiner(act *types.Actor, vmctx types.VMContext, param *IsMinerParam) ([]byte, ActorError) {
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var self StorageMarketState
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if err := vmctx.Storage().Get(vmctx.Storage().GetHead(), &self); err != nil {
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return nil, err
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}
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has, err := MinerSetHas(context.TODO(), vmctx, self.Miners, param.Addr)
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if err != nil {
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return nil, err
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}
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return cbg.EncodeBool(has), nil
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}
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type PledgeCollateralParams struct {
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Size types.BigInt
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}
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func (sma StorageMarketActor) PledgeCollateralForSize(act *types.Actor, vmctx types.VMContext, param *PledgeCollateralParams) ([]byte, ActorError) {
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var self StorageMarketState
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if err := vmctx.Storage().Get(vmctx.Storage().GetHead(), &self); err != nil {
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return nil, err
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}
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totalCollateral, err := pledgeCollateralForSize(vmctx, param.Size, self.TotalStorage, self.MinerCount)
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if err != nil {
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return nil, err
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}
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return totalCollateral.Bytes(), nil
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}
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func pledgeCollateralForSize(vmctx types.VMContext, size, totalStorage types.BigInt, minerCount uint64) (types.BigInt, aerrors.ActorError) {
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netBalance, err := vmctx.GetBalance(NetworkAddress)
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if err != nil {
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return types.EmptyInt, err
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}
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// TODO: the spec says to also grab 'total vested filecoin' and include it as available
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// If we don't factor that in, we effectively assume all of the locked up filecoin is 'available'
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// the blocker on that right now is that its hard to tell how much filecoin is unlocked
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availableFilecoin := types.BigSub(
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types.BigMul(types.NewInt(build.TotalFilecoin), types.NewInt(build.FilecoinPrecision)),
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netBalance,
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)
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totalPowerCollateral := types.BigDiv(
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types.BigMul(
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availableFilecoin,
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types.NewInt(build.PowerCollateralProportion),
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),
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types.NewInt(build.CollateralPrecision),
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)
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totalPerCapitaCollateral := types.BigDiv(
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types.BigMul(
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availableFilecoin,
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types.NewInt(build.PerCapitaCollateralProportion),
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),
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types.NewInt(build.CollateralPrecision),
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)
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// REVIEW: for bootstrapping purposes, we skip the power portion of the
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// collateral if there is no collateral in the network yet
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powerCollateral := types.NewInt(0)
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if types.BigCmp(totalStorage, types.NewInt(0)) != 0 {
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powerCollateral = types.BigDiv(
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types.BigMul(
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totalPowerCollateral,
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size,
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),
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totalStorage,
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)
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}
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perCapCollateral := types.BigDiv(
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totalPerCapitaCollateral,
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types.NewInt(minerCount),
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)
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return types.BigAdd(powerCollateral, perCapCollateral), nil
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}
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func MinerSetHas(ctx context.Context, vmctx types.VMContext, rcid cid.Cid, maddr address.Address) (bool, aerrors.ActorError) {
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nd, err := hamt.LoadNode(ctx, vmctx.Ipld(), rcid)
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if err != nil {
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return false, aerrors.Escalate(err, "failed to load miner set")
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}
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err = nd.Find(ctx, string(maddr.Bytes()), nil)
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switch err {
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case hamt.ErrNotFound:
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return false, nil
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case nil:
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return true, nil
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default:
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return false, aerrors.Escalate(err, "failed to do set lookup")
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}
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}
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func MinerSetAdd(ctx context.Context, vmctx types.VMContext, rcid cid.Cid, maddr address.Address) (cid.Cid, aerrors.ActorError) {
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nd, err := hamt.LoadNode(ctx, vmctx.Ipld(), rcid)
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if err != nil {
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return cid.Undef, aerrors.Escalate(err, "failed to load miner set")
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}
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mkey := string(maddr.Bytes())
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err = nd.Find(ctx, mkey, nil)
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if err == nil {
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return cid.Undef, aerrors.Escalate(fmt.Errorf("miner already found"), "miner set add failed")
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}
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if !xerrors.Is(err, hamt.ErrNotFound) {
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return cid.Undef, aerrors.Escalate(err, "failed to do miner set check")
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}
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if err := nd.Set(ctx, mkey, uint64(1)); err != nil {
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return cid.Undef, aerrors.Escalate(err, "adding miner address to set failed")
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}
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if err := nd.Flush(ctx); err != nil {
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return cid.Undef, aerrors.Escalate(err, "failed to flush miner set")
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}
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c, err := vmctx.Ipld().Put(ctx, nd)
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if err != nil {
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return cid.Undef, aerrors.Escalate(err, "failed to persist miner set to storage")
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}
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return c, nil
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}
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func MinerSetRemove(ctx context.Context, vmctx types.VMContext, rcid cid.Cid, maddr address.Address) (cid.Cid, aerrors.ActorError) {
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nd, err := hamt.LoadNode(ctx, vmctx.Ipld(), rcid)
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if err != nil {
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return cid.Undef, aerrors.Escalate(err, "failed to load miner set")
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}
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mkey := string(maddr.Bytes())
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switch nd.Delete(ctx, mkey) {
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case hamt.ErrNotFound:
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return cid.Undef, aerrors.New(1, "miner not found in set on delete")
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default:
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return cid.Undef, aerrors.Escalate(err, "failed to delete miner from set")
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case nil:
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}
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if err := nd.Flush(ctx); err != nil {
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return cid.Undef, aerrors.Escalate(err, "failed to flush miner set")
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}
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c, err := vmctx.Ipld().Put(ctx, nd)
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if err != nil {
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return cid.Undef, aerrors.Escalate(err, "failed to persist miner set to storage")
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}
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return c, nil
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}
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