lotus/chain/events/state/predicates.go
Steven Allen 5733c71c50 Lint everything
We were ignoring quite a few error cases, and had one case where we weren't
actually updating state where we wanted to. Unfortunately, if the linter doesn't
pass, nobody has any reason to actually check lint failures in CI.

There are three remaining XXXs marked in the code for lint.
2020-08-20 20:46:36 -07:00

788 lines
23 KiB
Go

package state
import (
"bytes"
"context"
"github.com/filecoin-project/go-address"
"github.com/filecoin-project/specs-actors/actors/abi"
"github.com/filecoin-project/specs-actors/actors/abi/big"
"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/market"
"github.com/filecoin-project/specs-actors/actors/builtin/miner"
"github.com/filecoin-project/specs-actors/actors/builtin/paych"
"github.com/filecoin-project/specs-actors/actors/util/adt"
"github.com/ipfs/go-cid"
cbor "github.com/ipfs/go-ipld-cbor"
typegen "github.com/whyrusleeping/cbor-gen"
"github.com/filecoin-project/lotus/api/apibstore"
"github.com/filecoin-project/lotus/chain/types"
)
// UserData is the data returned from the DiffTipSetKeyFunc
type UserData interface{}
// ChainAPI abstracts out calls made by this class to external APIs
type ChainAPI interface {
apibstore.ChainIO
StateGetActor(ctx context.Context, actor address.Address, tsk types.TipSetKey) (*types.Actor, error)
}
// StatePredicates has common predicates for responding to state changes
type StatePredicates struct {
api ChainAPI
cst *cbor.BasicIpldStore
}
func NewStatePredicates(api ChainAPI) *StatePredicates {
return &StatePredicates{
api: api,
cst: cbor.NewCborStore(apibstore.NewAPIBlockstore(api)),
}
}
// DiffTipSetKeyFunc check if there's a change form oldState to newState, and returns
// - changed: was there a change
// - user: user-defined data representing the state change
// - err
type DiffTipSetKeyFunc func(ctx context.Context, oldState, newState types.TipSetKey) (changed bool, user UserData, err error)
type DiffActorStateFunc func(ctx context.Context, oldActorStateHead, newActorStateHead cid.Cid) (changed bool, user UserData, err error)
// OnActorStateChanged calls diffStateFunc when the state changes for the given actor
func (sp *StatePredicates) OnActorStateChanged(addr address.Address, diffStateFunc DiffActorStateFunc) DiffTipSetKeyFunc {
return func(ctx context.Context, oldState, newState types.TipSetKey) (changed bool, user UserData, err error) {
oldActor, err := sp.api.StateGetActor(ctx, addr, oldState)
if err != nil {
return false, nil, err
}
newActor, err := sp.api.StateGetActor(ctx, addr, newState)
if err != nil {
return false, nil, err
}
if oldActor.Head.Equals(newActor.Head) {
return false, nil, nil
}
return diffStateFunc(ctx, oldActor.Head, newActor.Head)
}
}
type DiffStorageMarketStateFunc func(ctx context.Context, oldState *market.State, newState *market.State) (changed bool, user UserData, err error)
// OnStorageMarketActorChanged calls diffStorageMarketState when the state changes for the market actor
func (sp *StatePredicates) OnStorageMarketActorChanged(diffStorageMarketState DiffStorageMarketStateFunc) DiffTipSetKeyFunc {
return sp.OnActorStateChanged(builtin.StorageMarketActorAddr, func(ctx context.Context, oldActorStateHead, newActorStateHead cid.Cid) (changed bool, user UserData, err error) {
var oldState market.State
if err := sp.cst.Get(ctx, oldActorStateHead, &oldState); err != nil {
return false, nil, err
}
var newState market.State
if err := sp.cst.Get(ctx, newActorStateHead, &newState); err != nil {
return false, nil, err
}
return diffStorageMarketState(ctx, &oldState, &newState)
})
}
type BalanceTables struct {
EscrowTable *adt.BalanceTable
LockedTable *adt.BalanceTable
}
// DiffBalanceTablesFunc compares two balance tables
type DiffBalanceTablesFunc func(ctx context.Context, oldBalanceTable, newBalanceTable BalanceTables) (changed bool, user UserData, err error)
// OnBalanceChanged runs when the escrow table for available balances changes
func (sp *StatePredicates) OnBalanceChanged(diffBalances DiffBalanceTablesFunc) DiffStorageMarketStateFunc {
return func(ctx context.Context, oldState *market.State, newState *market.State) (changed bool, user UserData, err error) {
if oldState.EscrowTable.Equals(newState.EscrowTable) && oldState.LockedTable.Equals(newState.LockedTable) {
return false, nil, nil
}
ctxStore := &contextStore{
ctx: ctx,
cst: sp.cst,
}
oldEscrowRoot, err := adt.AsBalanceTable(ctxStore, oldState.EscrowTable)
if err != nil {
return false, nil, err
}
oldLockedRoot, err := adt.AsBalanceTable(ctxStore, oldState.LockedTable)
if err != nil {
return false, nil, err
}
newEscrowRoot, err := adt.AsBalanceTable(ctxStore, newState.EscrowTable)
if err != nil {
return false, nil, err
}
newLockedRoot, err := adt.AsBalanceTable(ctxStore, newState.LockedTable)
if err != nil {
return false, nil, err
}
return diffBalances(ctx, BalanceTables{oldEscrowRoot, oldLockedRoot}, BalanceTables{newEscrowRoot, newLockedRoot})
}
}
type DiffAdtArraysFunc func(ctx context.Context, oldDealStateRoot, newDealStateRoot *adt.Array) (changed bool, user UserData, err error)
// OnDealStateChanged calls diffDealStates when the market deal state changes
func (sp *StatePredicates) OnDealStateChanged(diffDealStates DiffAdtArraysFunc) DiffStorageMarketStateFunc {
return func(ctx context.Context, oldState *market.State, newState *market.State) (changed bool, user UserData, err error) {
if oldState.States.Equals(newState.States) {
return false, nil, nil
}
ctxStore := &contextStore{
ctx: ctx,
cst: sp.cst,
}
oldRoot, err := adt.AsArray(ctxStore, oldState.States)
if err != nil {
return false, nil, err
}
newRoot, err := adt.AsArray(ctxStore, newState.States)
if err != nil {
return false, nil, err
}
return diffDealStates(ctx, oldRoot, newRoot)
}
}
// OnDealProposalChanged calls diffDealProps when the market proposal state changes
func (sp *StatePredicates) OnDealProposalChanged(diffDealProps DiffAdtArraysFunc) DiffStorageMarketStateFunc {
return func(ctx context.Context, oldState *market.State, newState *market.State) (changed bool, user UserData, err error) {
if oldState.Proposals.Equals(newState.Proposals) {
return false, nil, nil
}
ctxStore := &contextStore{
ctx: ctx,
cst: sp.cst,
}
oldRoot, err := adt.AsArray(ctxStore, oldState.Proposals)
if err != nil {
return false, nil, err
}
newRoot, err := adt.AsArray(ctxStore, newState.Proposals)
if err != nil {
return false, nil, err
}
return diffDealProps(ctx, oldRoot, newRoot)
}
}
var _ AdtArrayDiff = &MarketDealProposalChanges{}
type MarketDealProposalChanges struct {
Added []ProposalIDState
Removed []ProposalIDState
}
type ProposalIDState struct {
ID abi.DealID
Proposal market.DealProposal
}
func (m *MarketDealProposalChanges) Add(key uint64, val *typegen.Deferred) error {
dp := new(market.DealProposal)
err := dp.UnmarshalCBOR(bytes.NewReader(val.Raw))
if err != nil {
return err
}
m.Added = append(m.Added, ProposalIDState{abi.DealID(key), *dp})
return nil
}
func (m *MarketDealProposalChanges) Modify(key uint64, from, to *typegen.Deferred) error {
// short circuit, DealProposals are static
return nil
}
func (m *MarketDealProposalChanges) Remove(key uint64, val *typegen.Deferred) error {
dp := new(market.DealProposal)
err := dp.UnmarshalCBOR(bytes.NewReader(val.Raw))
if err != nil {
return err
}
m.Removed = append(m.Removed, ProposalIDState{abi.DealID(key), *dp})
return nil
}
// OnDealProposalAmtChanged detects changes in the deal proposal AMT for all deal proposals and returns a MarketProposalsChanges structure containing:
// - Added Proposals
// - Modified Proposals
// - Removed Proposals
func (sp *StatePredicates) OnDealProposalAmtChanged() DiffAdtArraysFunc {
return func(ctx context.Context, oldDealProps, newDealProps *adt.Array) (changed bool, user UserData, err error) {
proposalChanges := new(MarketDealProposalChanges)
if err := DiffAdtArray(oldDealProps, newDealProps, proposalChanges); err != nil {
return false, nil, err
}
if len(proposalChanges.Added)+len(proposalChanges.Removed) == 0 {
return false, nil, nil
}
return true, proposalChanges, nil
}
}
var _ AdtArrayDiff = &MarketDealStateChanges{}
type MarketDealStateChanges struct {
Added []DealIDState
Modified []DealStateChange
Removed []DealIDState
}
type DealIDState struct {
ID abi.DealID
Deal market.DealState
}
func (m *MarketDealStateChanges) Add(key uint64, val *typegen.Deferred) error {
ds := new(market.DealState)
err := ds.UnmarshalCBOR(bytes.NewReader(val.Raw))
if err != nil {
return err
}
m.Added = append(m.Added, DealIDState{abi.DealID(key), *ds})
return nil
}
func (m *MarketDealStateChanges) Modify(key uint64, from, to *typegen.Deferred) error {
dsFrom := new(market.DealState)
if err := dsFrom.UnmarshalCBOR(bytes.NewReader(from.Raw)); err != nil {
return err
}
dsTo := new(market.DealState)
if err := dsTo.UnmarshalCBOR(bytes.NewReader(to.Raw)); err != nil {
return err
}
if *dsFrom != *dsTo {
m.Modified = append(m.Modified, DealStateChange{abi.DealID(key), dsFrom, dsTo})
}
return nil
}
func (m *MarketDealStateChanges) Remove(key uint64, val *typegen.Deferred) error {
ds := new(market.DealState)
err := ds.UnmarshalCBOR(bytes.NewReader(val.Raw))
if err != nil {
return err
}
m.Removed = append(m.Removed, DealIDState{abi.DealID(key), *ds})
return nil
}
// OnDealStateAmtChanged detects changes in the deal state AMT for all deal states and returns a MarketDealStateChanges structure containing:
// - Added Deals
// - Modified Deals
// - Removed Deals
func (sp *StatePredicates) OnDealStateAmtChanged() DiffAdtArraysFunc {
return func(ctx context.Context, oldDealStates, newDealStates *adt.Array) (changed bool, user UserData, err error) {
dealStateChanges := new(MarketDealStateChanges)
if err := DiffAdtArray(oldDealStates, newDealStates, dealStateChanges); err != nil {
return false, nil, err
}
if len(dealStateChanges.Added)+len(dealStateChanges.Modified)+len(dealStateChanges.Removed) == 0 {
return false, nil, nil
}
return true, dealStateChanges, nil
}
}
// ChangedDeals is a set of changes to deal state
type ChangedDeals map[abi.DealID]DealStateChange
// DealStateChange is a change in deal state from -> to
type DealStateChange struct {
ID abi.DealID
From *market.DealState
To *market.DealState
}
// DealStateChangedForIDs detects changes in the deal state AMT for the given deal IDs
func (sp *StatePredicates) DealStateChangedForIDs(dealIds []abi.DealID) DiffAdtArraysFunc {
return func(ctx context.Context, oldDealStateArray, newDealStateArray *adt.Array) (changed bool, user UserData, err error) {
changedDeals := make(ChangedDeals)
for _, dealID := range dealIds {
var oldDealPtr, newDealPtr *market.DealState
var oldDeal, newDeal market.DealState
// If the deal has been removed, we just set it to nil
found, err := oldDealStateArray.Get(uint64(dealID), &oldDeal)
if err != nil {
return false, nil, err
}
if found {
oldDealPtr = &oldDeal
}
found, err = newDealStateArray.Get(uint64(dealID), &newDeal)
if err != nil {
return false, nil, err
}
if found {
newDealPtr = &newDeal
}
if oldDeal != newDeal {
changedDeals[dealID] = DealStateChange{dealID, oldDealPtr, newDealPtr}
}
}
if len(changedDeals) > 0 {
return true, changedDeals, nil
}
return false, nil, nil
}
}
// ChangedBalances is a set of changes to deal state
type ChangedBalances map[address.Address]BalanceChange
// BalanceChange is a change in balance from -> to
type BalanceChange struct {
From abi.TokenAmount
To abi.TokenAmount
}
// AvailableBalanceChangedForAddresses detects changes in the escrow table for the given addresses
func (sp *StatePredicates) AvailableBalanceChangedForAddresses(getAddrs func() []address.Address) DiffBalanceTablesFunc {
return func(ctx context.Context, oldBalances, newBalances BalanceTables) (changed bool, user UserData, err error) {
changedBalances := make(ChangedBalances)
addrs := getAddrs()
for _, addr := range addrs {
// If the deal has been removed, we just set it to nil
oldEscrowBalance, err := oldBalances.EscrowTable.Get(addr)
if err != nil {
return false, nil, err
}
oldLockedBalance, err := oldBalances.LockedTable.Get(addr)
if err != nil {
return false, nil, err
}
oldBalance := big.Sub(oldEscrowBalance, oldLockedBalance)
newEscrowBalance, err := newBalances.EscrowTable.Get(addr)
if err != nil {
return false, nil, err
}
newLockedBalance, err := newBalances.LockedTable.Get(addr)
if err != nil {
return false, nil, err
}
newBalance := big.Sub(newEscrowBalance, newLockedBalance)
if !oldBalance.Equals(newBalance) {
changedBalances[addr] = BalanceChange{oldBalance, newBalance}
}
}
if len(changedBalances) > 0 {
return true, changedBalances, nil
}
return false, nil, nil
}
}
type DiffMinerActorStateFunc func(ctx context.Context, oldState *miner.State, newState *miner.State) (changed bool, user UserData, err error)
func (sp *StatePredicates) OnInitActorChange(diffInitActorState DiffInitActorStateFunc) DiffTipSetKeyFunc {
return sp.OnActorStateChanged(builtin.InitActorAddr, func(ctx context.Context, oldActorStateHead, newActorStateHead cid.Cid) (changed bool, user UserData, err error) {
var oldState init_.State
if err := sp.cst.Get(ctx, oldActorStateHead, &oldState); err != nil {
return false, nil, err
}
var newState init_.State
if err := sp.cst.Get(ctx, newActorStateHead, &newState); err != nil {
return false, nil, err
}
return diffInitActorState(ctx, &oldState, &newState)
})
}
func (sp *StatePredicates) OnMinerActorChange(minerAddr address.Address, diffMinerActorState DiffMinerActorStateFunc) DiffTipSetKeyFunc {
return sp.OnActorStateChanged(minerAddr, func(ctx context.Context, oldActorStateHead, newActorStateHead cid.Cid) (changed bool, user UserData, err error) {
var oldState miner.State
if err := sp.cst.Get(ctx, oldActorStateHead, &oldState); err != nil {
return false, nil, err
}
var newState miner.State
if err := sp.cst.Get(ctx, newActorStateHead, &newState); err != nil {
return false, nil, err
}
return diffMinerActorState(ctx, &oldState, &newState)
})
}
type MinerSectorChanges struct {
Added []miner.SectorOnChainInfo
Extended []SectorExtensions
Removed []miner.SectorOnChainInfo
}
var _ AdtArrayDiff = &MinerSectorChanges{}
type SectorExtensions struct {
From miner.SectorOnChainInfo
To miner.SectorOnChainInfo
}
func (m *MinerSectorChanges) Add(key uint64, val *typegen.Deferred) error {
si := new(miner.SectorOnChainInfo)
err := si.UnmarshalCBOR(bytes.NewReader(val.Raw))
if err != nil {
return err
}
m.Added = append(m.Added, *si)
return nil
}
func (m *MinerSectorChanges) Modify(key uint64, from, to *typegen.Deferred) error {
siFrom := new(miner.SectorOnChainInfo)
err := siFrom.UnmarshalCBOR(bytes.NewReader(from.Raw))
if err != nil {
return err
}
siTo := new(miner.SectorOnChainInfo)
err = siTo.UnmarshalCBOR(bytes.NewReader(to.Raw))
if err != nil {
return err
}
if siFrom.Expiration != siTo.Expiration {
m.Extended = append(m.Extended, SectorExtensions{
From: *siFrom,
To: *siTo,
})
}
return nil
}
func (m *MinerSectorChanges) Remove(key uint64, val *typegen.Deferred) error {
si := new(miner.SectorOnChainInfo)
err := si.UnmarshalCBOR(bytes.NewReader(val.Raw))
if err != nil {
return err
}
m.Removed = append(m.Removed, *si)
return nil
}
func (sp *StatePredicates) OnMinerSectorChange() DiffMinerActorStateFunc {
return func(ctx context.Context, oldState, newState *miner.State) (changed bool, user UserData, err error) {
ctxStore := &contextStore{
ctx: ctx,
cst: sp.cst,
}
sectorChanges := &MinerSectorChanges{
Added: []miner.SectorOnChainInfo{},
Extended: []SectorExtensions{},
Removed: []miner.SectorOnChainInfo{},
}
// no sector changes
if oldState.Sectors.Equals(newState.Sectors) {
return false, nil, nil
}
oldSectors, err := adt.AsArray(ctxStore, oldState.Sectors)
if err != nil {
return false, nil, err
}
newSectors, err := adt.AsArray(ctxStore, newState.Sectors)
if err != nil {
return false, nil, err
}
if err := DiffAdtArray(oldSectors, newSectors, sectorChanges); err != nil {
return false, nil, err
}
// nothing changed
if len(sectorChanges.Added)+len(sectorChanges.Extended)+len(sectorChanges.Removed) == 0 {
return false, nil, nil
}
return true, sectorChanges, nil
}
}
type MinerPreCommitChanges struct {
Added []miner.SectorPreCommitOnChainInfo
Removed []miner.SectorPreCommitOnChainInfo
}
func (m *MinerPreCommitChanges) AsKey(key string) (adt.Keyer, error) {
sector, err := adt.ParseUIntKey(key)
if err != nil {
return nil, err
}
return miner.SectorKey(abi.SectorNumber(sector)), nil
}
func (m *MinerPreCommitChanges) Add(key string, val *typegen.Deferred) error {
sp := new(miner.SectorPreCommitOnChainInfo)
err := sp.UnmarshalCBOR(bytes.NewReader(val.Raw))
if err != nil {
return err
}
m.Added = append(m.Added, *sp)
return nil
}
func (m *MinerPreCommitChanges) Modify(key string, from, to *typegen.Deferred) error {
return nil
}
func (m *MinerPreCommitChanges) Remove(key string, val *typegen.Deferred) error {
sp := new(miner.SectorPreCommitOnChainInfo)
err := sp.UnmarshalCBOR(bytes.NewReader(val.Raw))
if err != nil {
return err
}
m.Removed = append(m.Removed, *sp)
return nil
}
func (sp *StatePredicates) OnMinerPreCommitChange() DiffMinerActorStateFunc {
return func(ctx context.Context, oldState, newState *miner.State) (changed bool, user UserData, err error) {
ctxStore := &contextStore{
ctx: ctx,
cst: sp.cst,
}
precommitChanges := &MinerPreCommitChanges{
Added: []miner.SectorPreCommitOnChainInfo{},
Removed: []miner.SectorPreCommitOnChainInfo{},
}
if oldState.PreCommittedSectors.Equals(newState.PreCommittedSectors) {
return false, nil, nil
}
oldPrecommits, err := adt.AsMap(ctxStore, oldState.PreCommittedSectors)
if err != nil {
return false, nil, err
}
newPrecommits, err := adt.AsMap(ctxStore, newState.PreCommittedSectors)
if err != nil {
return false, nil, err
}
if err := DiffAdtMap(oldPrecommits, newPrecommits, precommitChanges); err != nil {
return false, nil, err
}
if len(precommitChanges.Added)+len(precommitChanges.Removed) == 0 {
return false, nil, nil
}
return true, precommitChanges, nil
}
}
// DiffPaymentChannelStateFunc is function that compares two states for the payment channel
type DiffPaymentChannelStateFunc func(ctx context.Context, oldState *paych.State, newState *paych.State) (changed bool, user UserData, err error)
// OnPaymentChannelActorChanged calls diffPaymentChannelState when the state changes for the the payment channel actor
func (sp *StatePredicates) OnPaymentChannelActorChanged(paychAddr address.Address, diffPaymentChannelState DiffPaymentChannelStateFunc) DiffTipSetKeyFunc {
return sp.OnActorStateChanged(paychAddr, func(ctx context.Context, oldActorStateHead, newActorStateHead cid.Cid) (changed bool, user UserData, err error) {
var oldState paych.State
if err := sp.cst.Get(ctx, oldActorStateHead, &oldState); err != nil {
return false, nil, err
}
var newState paych.State
if err := sp.cst.Get(ctx, newActorStateHead, &newState); err != nil {
return false, nil, err
}
return diffPaymentChannelState(ctx, &oldState, &newState)
})
}
// PayChToSendChange is a difference in the amount to send on a payment channel when the money is collected
type PayChToSendChange struct {
OldToSend abi.TokenAmount
NewToSend abi.TokenAmount
}
// OnToSendAmountChanges monitors changes on the total amount to send from one party to the other on a payment channel
func (sp *StatePredicates) OnToSendAmountChanges() DiffPaymentChannelStateFunc {
return func(ctx context.Context, oldState *paych.State, newState *paych.State) (changed bool, user UserData, err error) {
if oldState.ToSend.Equals(newState.ToSend) {
return false, nil, nil
}
return true, &PayChToSendChange{
OldToSend: oldState.ToSend,
NewToSend: newState.ToSend,
}, nil
}
}
type AddressPair struct {
ID address.Address
PK address.Address
}
type InitActorAddressChanges struct {
Added []AddressPair
Modified []AddressChange
Removed []AddressPair
}
type AddressChange struct {
From AddressPair
To AddressPair
}
type DiffInitActorStateFunc func(ctx context.Context, oldState *init_.State, newState *init_.State) (changed bool, user UserData, err error)
func (i *InitActorAddressChanges) AsKey(key string) (adt.Keyer, error) {
addr, err := address.NewFromBytes([]byte(key))
if err != nil {
return nil, err
}
return adt.AddrKey(addr), nil
}
func (i *InitActorAddressChanges) Add(key string, val *typegen.Deferred) error {
pkAddr, err := address.NewFromBytes([]byte(key))
if err != nil {
return err
}
id := new(typegen.CborInt)
if err := id.UnmarshalCBOR(bytes.NewReader(val.Raw)); err != nil {
return err
}
idAddr, err := address.NewIDAddress(uint64(*id))
if err != nil {
return err
}
i.Added = append(i.Added, AddressPair{
ID: idAddr,
PK: pkAddr,
})
return nil
}
func (i *InitActorAddressChanges) Modify(key string, from, to *typegen.Deferred) error {
pkAddr, err := address.NewFromBytes([]byte(key))
if err != nil {
return err
}
fromID := new(typegen.CborInt)
if err := fromID.UnmarshalCBOR(bytes.NewReader(from.Raw)); err != nil {
return err
}
fromIDAddr, err := address.NewIDAddress(uint64(*fromID))
if err != nil {
return err
}
toID := new(typegen.CborInt)
if err := toID.UnmarshalCBOR(bytes.NewReader(to.Raw)); err != nil {
return err
}
toIDAddr, err := address.NewIDAddress(uint64(*toID))
if err != nil {
return err
}
i.Modified = append(i.Modified, AddressChange{
From: AddressPair{
ID: fromIDAddr,
PK: pkAddr,
},
To: AddressPair{
ID: toIDAddr,
PK: pkAddr,
},
})
return nil
}
func (i *InitActorAddressChanges) Remove(key string, val *typegen.Deferred) error {
pkAddr, err := address.NewFromBytes([]byte(key))
if err != nil {
return err
}
id := new(typegen.CborInt)
if err := id.UnmarshalCBOR(bytes.NewReader(val.Raw)); err != nil {
return err
}
idAddr, err := address.NewIDAddress(uint64(*id))
if err != nil {
return err
}
i.Removed = append(i.Removed, AddressPair{
ID: idAddr,
PK: pkAddr,
})
return nil
}
func (sp *StatePredicates) OnAddressMapChange() DiffInitActorStateFunc {
return func(ctx context.Context, oldState, newState *init_.State) (changed bool, user UserData, err error) {
ctxStore := &contextStore{
ctx: ctx,
cst: sp.cst,
}
addressChanges := &InitActorAddressChanges{
Added: []AddressPair{},
Modified: []AddressChange{},
Removed: []AddressPair{},
}
if oldState.AddressMap.Equals(newState.AddressMap) {
return false, nil, nil
}
oldAddrs, err := adt.AsMap(ctxStore, oldState.AddressMap)
if err != nil {
return false, nil, err
}
newAddrs, err := adt.AsMap(ctxStore, newState.AddressMap)
if err != nil {
return false, nil, err
}
if err := DiffAdtMap(oldAddrs, newAddrs, addressChanges); err != nil {
return false, nil, err
}
if len(addressChanges.Added)+len(addressChanges.Removed)+len(addressChanges.Modified) == 0 {
return false, nil, nil
}
return true, addressChanges, nil
}
}