-
Notifications
You must be signed in to change notification settings - Fork 1.3k
/
call.go
286 lines (248 loc) · 9.44 KB
/
call.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
package stmgr
import (
"context"
"errors"
"fmt"
"github.com/ipfs/go-cid"
cbor "github.com/ipfs/go-ipld-cbor"
"go.opencensus.io/trace"
"golang.org/x/xerrors"
"github.com/filecoin-project/go-address"
"github.com/filecoin-project/go-state-types/abi"
"github.com/filecoin-project/go-state-types/big"
"github.com/filecoin-project/go-state-types/crypto"
"github.com/filecoin-project/go-state-types/network"
"github.com/filecoin-project/lotus/api"
"github.com/filecoin-project/lotus/blockstore"
"github.com/filecoin-project/lotus/build"
"github.com/filecoin-project/lotus/chain/rand"
"github.com/filecoin-project/lotus/chain/state"
"github.com/filecoin-project/lotus/chain/types"
"github.com/filecoin-project/lotus/chain/vm"
)
var ErrExpensiveFork = errors.New("refusing explicit call due to state fork at epoch")
// Call applies the given message to the given tipset's parent state, at the epoch following the
// tipset's parent. In the presence of null blocks, the height at which the message is invoked may
// be less than the specified tipset.
func (sm *StateManager) Call(ctx context.Context, msg *types.Message, ts *types.TipSet) (*api.InvocResult, error) {
// Copy the message as we modify it below.
msgCopy := *msg
msg = &msgCopy
if msg.GasLimit == 0 {
msg.GasLimit = build.BlockGasLimit
}
if msg.GasFeeCap == types.EmptyInt {
msg.GasFeeCap = types.NewInt(0)
}
if msg.GasPremium == types.EmptyInt {
msg.GasPremium = types.NewInt(0)
}
if msg.Value == types.EmptyInt {
msg.Value = types.NewInt(0)
}
return sm.callInternal(ctx, msg, nil, ts, cid.Undef, sm.GetNetworkVersion, false, false)
}
// CallWithGas calculates the state for a given tipset, and then applies the given message on top of that state.
func (sm *StateManager) CallWithGas(ctx context.Context, msg *types.Message, priorMsgs []types.ChainMsg, ts *types.TipSet, applyTsMessages bool) (*api.InvocResult, error) {
return sm.callInternal(ctx, msg, priorMsgs, ts, cid.Undef, sm.GetNetworkVersion, true, applyTsMessages)
}
// CallAtStateAndVersion allows you to specify a message to execute on the given stateCid and network version.
// This should mostly be used for gas modelling on a migrated state.
// Tipset here is not needed because stateCid and network version fully describe execution we want. The internal function
// will get the heaviest tipset for use for things like basefee, which we don't really care about here.
func (sm *StateManager) CallAtStateAndVersion(ctx context.Context, msg *types.Message, stateCid cid.Cid, v network.Version) (*api.InvocResult, error) {
nvGetter := func(context.Context, abi.ChainEpoch) network.Version {
return v
}
return sm.callInternal(ctx, msg, nil, nil, stateCid, nvGetter, true, false)
}
// - If no tipset is specified, the first tipset without an expensive migration or one in its parent is used.
// - If executing a message at a given tipset or its parent would trigger an expensive migration, the call will
// fail with ErrExpensiveFork.
func (sm *StateManager) callInternal(ctx context.Context, msg *types.Message, priorMsgs []types.ChainMsg, ts *types.TipSet, stateCid cid.Cid, nvGetter rand.NetworkVersionGetter, checkGas, applyTsMessages bool) (*api.InvocResult, error) {
ctx, span := trace.StartSpan(ctx, "statemanager.callInternal")
defer span.End()
// Copy the message as we'll be modifying the nonce.
msgCopy := *msg
msg = &msgCopy
var err error
var pts *types.TipSet
if ts == nil {
ts = sm.cs.GetHeaviestTipSet()
// Search back till we find a height with no fork, or we reach the beginning.
// We need the _previous_ height to have no fork, because we'll
// run the fork logic in `sm.TipSetState`. We need the _current_
// height to have no fork, because we'll run it inside this
// function before executing the given message.
for ts.Height() > 0 {
pts, err = sm.cs.GetTipSetFromKey(ctx, ts.Parents())
if err != nil {
return nil, xerrors.Errorf("failed to find a non-forking epoch: %w", err)
}
// Checks for expensive forks from the parents to the tipset, including nil tipsets
if !sm.hasExpensiveForkBetween(pts.Height(), ts.Height()+1) {
break
}
ts = pts
}
} else if ts.Height() > 0 {
pts, err = sm.cs.GetTipSetFromKey(ctx, ts.Parents())
if err != nil {
return nil, xerrors.Errorf("failed to find a non-forking epoch: %w", err)
}
if sm.hasExpensiveForkBetween(pts.Height(), ts.Height()+1) {
return nil, ErrExpensiveFork
}
}
// Unless executing on a specific state cid, apply all the messages from the current tipset
// first. Unfortunately, we can't just execute the tipset, because that will run cron. We
// don't want to apply miner messages after cron runs in a given epoch.
if stateCid == cid.Undef {
stateCid = ts.ParentState()
}
tsMsgs, err := sm.cs.MessagesForTipset(ctx, ts)
if err != nil {
return nil, xerrors.Errorf("failed to lookup messages for parent tipset: %w", err)
}
if applyTsMessages {
priorMsgs = append(tsMsgs, priorMsgs...)
} else {
var filteredTsMsgs []types.ChainMsg
for _, tsMsg := range tsMsgs {
//TODO we should technically be normalizing the filecoin address of from when we compare here
if tsMsg.VMMessage().From == msg.VMMessage().From {
filteredTsMsgs = append(filteredTsMsgs, tsMsg)
}
}
priorMsgs = append(filteredTsMsgs, priorMsgs...)
}
// Technically, the tipset we're passing in here should be ts+1, but that may not exist.
stateCid, err = sm.HandleStateForks(ctx, stateCid, ts.Height(), nil, ts)
if err != nil {
return nil, fmt.Errorf("failed to handle fork: %w", err)
}
if span.IsRecordingEvents() {
span.AddAttributes(
trace.Int64Attribute("gas_limit", msg.GasLimit),
trace.StringAttribute("gas_feecap", msg.GasFeeCap.String()),
trace.StringAttribute("value", msg.Value.String()),
)
}
buffStore := blockstore.NewTieredBstore(sm.cs.StateBlockstore(), blockstore.NewMemorySync())
vmopt := &vm.VMOpts{
StateBase: stateCid,
Epoch: ts.Height(),
Timestamp: ts.MinTimestamp(),
Rand: rand.NewStateRand(sm.cs, ts.Cids(), sm.beacon, nvGetter),
Bstore: buffStore,
Actors: sm.tsExec.NewActorRegistry(),
Syscalls: sm.Syscalls,
CircSupplyCalc: sm.GetVMCirculatingSupply,
NetworkVersion: nvGetter(ctx, ts.Height()),
BaseFee: ts.Blocks()[0].ParentBaseFee,
LookbackState: LookbackStateGetterForTipset(sm, ts),
TipSetGetter: TipSetGetterForTipset(sm.cs, ts),
Tracing: true,
}
vmi, err := sm.newVM(ctx, vmopt)
if err != nil {
return nil, xerrors.Errorf("failed to set up vm: %w", err)
}
for i, m := range priorMsgs {
_, err = vmi.ApplyMessage(ctx, m)
if err != nil {
return nil, xerrors.Errorf("applying prior message (%d, %s): %w", i, m.Cid(), err)
}
}
// We flush to get the VM's view of the state tree after applying the above messages
// This is needed to get the correct nonce from the actor state to match the VM
stateCid, err = vmi.Flush(ctx)
if err != nil {
return nil, xerrors.Errorf("flushing vm: %w", err)
}
stTree, err := state.LoadStateTree(cbor.NewCborStore(buffStore), stateCid)
if err != nil {
return nil, xerrors.Errorf("loading state tree: %w", err)
}
fromActor, err := stTree.GetActor(msg.From)
if err != nil {
return nil, xerrors.Errorf("call raw get actor: %s", err)
}
msg.Nonce = fromActor.Nonce
// If the fee cap is set to zero, make gas free.
if msg.GasFeeCap.NilOrZero() {
// Now estimate with a new VM with no base fee.
vmopt.BaseFee = big.Zero()
vmopt.StateBase = stateCid
vmi, err = sm.newVM(ctx, vmopt)
if err != nil {
return nil, xerrors.Errorf("failed to set up estimation vm: %w", err)
}
}
var ret *vm.ApplyRet
var gasInfo api.MsgGasCost
if checkGas {
fromKey, err := sm.ResolveToDeterministicAddress(ctx, msg.From, ts)
if err != nil {
return nil, xerrors.Errorf("could not resolve key: %w", err)
}
var msgApply types.ChainMsg
switch fromKey.Protocol() {
case address.BLS:
msgApply = msg
case address.SECP256K1:
msgApply = &types.SignedMessage{
Message: *msg,
Signature: crypto.Signature{
Type: crypto.SigTypeSecp256k1,
Data: make([]byte, 65),
},
}
case address.Delegated:
msgApply = &types.SignedMessage{
Message: *msg,
Signature: crypto.Signature{
Type: crypto.SigTypeDelegated,
Data: make([]byte, 65),
},
}
}
ret, err = vmi.ApplyMessage(ctx, msgApply)
if err != nil {
return nil, xerrors.Errorf("gas estimation failed: %w", err)
}
gasInfo = MakeMsgGasCost(msg, ret)
} else {
ret, err = vmi.ApplyImplicitMessage(ctx, msg)
if err != nil && ret == nil {
return nil, xerrors.Errorf("apply message failed: %w", err)
}
}
var errs string
if ret.ActorErr != nil {
errs = ret.ActorErr.Error()
}
return &api.InvocResult{
MsgCid: msg.Cid(),
Msg: msg,
MsgRct: &ret.MessageReceipt,
GasCost: gasInfo,
ExecutionTrace: ret.ExecutionTrace,
Error: errs,
Duration: ret.Duration,
}, err
}
var errHaltExecution = fmt.Errorf("halt")
func (sm *StateManager) Replay(ctx context.Context, ts *types.TipSet, mcid cid.Cid) (*types.Message, *vm.ApplyRet, error) {
var finder messageFinder
// message to find
finder.mcid = mcid
_, _, err := sm.tsExec.ExecuteTipSet(ctx, sm, ts, &finder, true)
if err != nil && !xerrors.Is(err, errHaltExecution) {
return nil, nil, xerrors.Errorf("unexpected error during execution: %w", err)
}
if finder.outr == nil {
return nil, nil, xerrors.Errorf("given message not found in tipset")
}
return finder.outm, finder.outr, nil
}