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neo-go/pkg/core/statesync/neotest_test.go
Roman Khimov 1b83dc2476 *: improve for loop syntax 
Mostly it's about Go 1.22+ syntax with ranging over integers, but it also
prefers ranging over slices where possible (it makes code a little better to
read).

Notice that we have a number of dangerous loops where slices are mutated
during loop execution, many of these can't be converted since we need proper
length evalutation at every iteration.

Signed-off-by: Roman Khimov <roman@nspcc.ru>
2024-08-30 21:45:18 +03:00

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package statesync_test
import (
"bytes"
"testing"
"github.com/nspcc-dev/neo-go/internal/basicchain"
"github.com/nspcc-dev/neo-go/pkg/config"
"github.com/nspcc-dev/neo-go/pkg/core/block"
"github.com/nspcc-dev/neo-go/pkg/core/mpt"
"github.com/nspcc-dev/neo-go/pkg/core/storage"
"github.com/nspcc-dev/neo-go/pkg/neotest"
"github.com/nspcc-dev/neo-go/pkg/neotest/chain"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/stretchr/testify/require"
)
func TestStateSyncModule_Init(t *testing.T) {
const (
stateSyncInterval = 2
maxTraceable = 3
)
spoutCfg := func(c *config.Blockchain) {
c.StateRootInHeader = true
c.P2PStateExchangeExtensions = true
c.StateSyncInterval = stateSyncInterval
c.MaxTraceableBlocks = maxTraceable
}
bcSpout, validators, committee := chain.NewMultiWithCustomConfig(t, spoutCfg)
e := neotest.NewExecutor(t, bcSpout, validators, committee)
for range 2*stateSyncInterval + int(maxTraceable) + 2 {
e.AddNewBlock(t)
}
boltCfg := func(c *config.Blockchain) {
spoutCfg(c)
c.Ledger.KeepOnlyLatestState = true
c.Ledger.RemoveUntraceableBlocks = true
}
t.Run("inactive: spout chain is too low to start state sync process", func(t *testing.T) {
bcBolt, _, _ := chain.NewMultiWithCustomConfig(t, boltCfg)
module := bcBolt.GetStateSyncModule()
require.NoError(t, module.Init(uint32(2*stateSyncInterval-1)))
require.False(t, module.IsActive())
})
t.Run("inactive: bolt chain height is close enough to spout chain height", func(t *testing.T) {
bcBolt, _, _ := chain.NewMultiWithCustomConfig(t, boltCfg)
for i := uint32(1); i < bcSpout.BlockHeight()-stateSyncInterval; i++ {
b, err := bcSpout.GetBlock(bcSpout.GetHeaderHash(i))
require.NoError(t, err)
require.NoError(t, bcBolt.AddBlock(b))
}
module := bcBolt.GetStateSyncModule()
require.NoError(t, module.Init(bcSpout.BlockHeight()))
require.False(t, module.IsActive())
})
t.Run("error: bolt chain is too low to start state sync process", func(t *testing.T) {
bcBolt, validatorsBolt, committeeBolt := chain.NewMultiWithCustomConfig(t, boltCfg)
eBolt := neotest.NewExecutor(t, bcBolt, validatorsBolt, committeeBolt)
eBolt.AddNewBlock(t)
module := bcBolt.GetStateSyncModule()
require.Error(t, module.Init(uint32(3*stateSyncInterval)))
})
t.Run("initialized: no previous state sync point", func(t *testing.T) {
bcBolt, _, _ := chain.NewMultiWithCustomConfig(t, boltCfg)
module := bcBolt.GetStateSyncModule()
require.NoError(t, module.Init(bcSpout.BlockHeight()))
require.True(t, module.IsActive())
require.True(t, module.IsInitialized())
require.True(t, module.NeedHeaders())
require.False(t, module.NeedMPTNodes())
})
t.Run("error: outdated state sync point in the storage", func(t *testing.T) {
bcBolt, _, _ := chain.NewMultiWithCustomConfig(t, boltCfg)
module := bcBolt.GetStateSyncModule()
require.NoError(t, module.Init(bcSpout.BlockHeight()))
module = bcBolt.GetStateSyncModule()
require.Error(t, module.Init(bcSpout.BlockHeight()+2*uint32(stateSyncInterval)))
})
t.Run("initialized: valid previous state sync point in the storage", func(t *testing.T) {
bcBolt, _, _ := chain.NewMultiWithCustomConfig(t, boltCfg)
module := bcBolt.GetStateSyncModule()
require.NoError(t, module.Init(bcSpout.BlockHeight()))
module = bcBolt.GetStateSyncModule()
require.NoError(t, module.Init(bcSpout.BlockHeight()))
require.True(t, module.IsActive())
require.True(t, module.IsInitialized())
require.True(t, module.NeedHeaders())
require.False(t, module.NeedMPTNodes())
})
t.Run("initialization from headers/blocks/mpt synced stages", func(t *testing.T) {
bcBolt, validatorsBolt, committeeBolt := chain.NewMultiWithCustomConfig(t, boltCfg)
eBolt := neotest.NewExecutor(t, bcBolt, validatorsBolt, committeeBolt)
module := bcBolt.GetStateSyncModule()
require.NoError(t, module.Init(bcSpout.BlockHeight()))
// firstly, fetch all headers to create proper DB state (where headers are in sync)
stateSyncPoint := (bcSpout.BlockHeight() / stateSyncInterval) * stateSyncInterval
var expectedHeader *block.Header
for i := uint32(1); i <= bcSpout.HeaderHeight(); i++ {
header, err := bcSpout.GetHeader(bcSpout.GetHeaderHash(i))
require.NoError(t, err)
require.NoError(t, module.AddHeaders(header))
if i == stateSyncPoint+1 {
expectedHeader = header
}
}
require.True(t, module.IsActive())
require.True(t, module.IsInitialized())
require.False(t, module.NeedHeaders())
require.True(t, module.NeedMPTNodes())
// then create new statesync module with the same DB and check that state is proper
// (headers are in sync)
module = bcBolt.GetStateSyncModule()
require.NoError(t, module.Init(bcSpout.BlockHeight()))
require.True(t, module.IsActive())
require.True(t, module.IsInitialized())
require.False(t, module.NeedHeaders())
require.True(t, module.NeedMPTNodes())
unknownNodes := module.GetUnknownMPTNodesBatch(2)
require.Equal(t, 1, len(unknownNodes))
require.Equal(t, expectedHeader.PrevStateRoot, unknownNodes[0])
// add several blocks to create DB state where blocks are not in sync yet, but it's not a genesis.
for i := stateSyncPoint - maxTraceable + 1; i <= stateSyncPoint-stateSyncInterval-1; i++ {
block, err := bcSpout.GetBlock(bcSpout.GetHeaderHash(i))
require.NoError(t, err)
require.NoError(t, module.AddBlock(block))
}
require.True(t, module.IsActive())
require.True(t, module.IsInitialized())
require.False(t, module.NeedHeaders())
require.True(t, module.NeedMPTNodes())
require.Equal(t, uint32(stateSyncPoint-stateSyncInterval-1), module.BlockHeight())
// then create new statesync module with the same DB and check that state is proper
// (blocks are not in sync yet)
module = bcBolt.GetStateSyncModule()
require.NoError(t, module.Init(bcSpout.BlockHeight()))
require.True(t, module.IsActive())
require.True(t, module.IsInitialized())
require.False(t, module.NeedHeaders())
require.True(t, module.NeedMPTNodes())
unknownNodes = module.GetUnknownMPTNodesBatch(2)
require.Equal(t, 1, len(unknownNodes))
require.Equal(t, expectedHeader.PrevStateRoot, unknownNodes[0])
require.Equal(t, uint32(stateSyncPoint-stateSyncInterval-1), module.BlockHeight())
// add rest of blocks to create DB state where blocks are in sync
for i := stateSyncPoint - stateSyncInterval; i <= stateSyncPoint; i++ {
block, err := bcSpout.GetBlock(bcSpout.GetHeaderHash(i))
require.NoError(t, err)
require.NoError(t, module.AddBlock(block))
}
require.True(t, module.IsActive())
require.True(t, module.IsInitialized())
require.False(t, module.NeedHeaders())
require.True(t, module.NeedMPTNodes())
lastBlock, err := bcBolt.GetBlock(expectedHeader.PrevHash)
require.NoError(t, err)
require.Equal(t, uint32(stateSyncPoint), lastBlock.Index)
require.Equal(t, uint32(stateSyncPoint), module.BlockHeight())
// then create new statesync module with the same DB and check that state is proper
// (headers and blocks are in sync)
module = bcBolt.GetStateSyncModule()
require.NoError(t, module.Init(bcSpout.BlockHeight()))
require.True(t, module.IsActive())
require.True(t, module.IsInitialized())
require.False(t, module.NeedHeaders())
require.True(t, module.NeedMPTNodes())
unknownNodes = module.GetUnknownMPTNodesBatch(2)
require.Equal(t, 1, len(unknownNodes))
require.Equal(t, expectedHeader.PrevStateRoot, unknownNodes[0])
require.Equal(t, uint32(stateSyncPoint), module.BlockHeight())
// add a few MPT nodes to create DB state where some of MPT nodes are missing
count := 5
for {
unknownHashes := module.GetUnknownMPTNodesBatch(1) // restore nodes one-by-one
if len(unknownHashes) == 0 {
break
}
err := bcSpout.GetStateSyncModule().Traverse(unknownHashes[0], func(node mpt.Node, nodeBytes []byte) bool {
require.NoError(t, module.AddMPTNodes([][]byte{nodeBytes}))
return true // add nodes one-by-one
})
require.NoError(t, err)
count--
if count < 0 {
break
}
}
// then create new statesync module with the same DB and check that state is proper
// (headers and blocks are in sync, mpt is not yet synced)
module = bcBolt.GetStateSyncModule()
require.NoError(t, module.Init(bcSpout.BlockHeight()))
require.True(t, module.IsActive())
require.True(t, module.IsInitialized())
require.False(t, module.NeedHeaders())
require.True(t, module.NeedMPTNodes())
unknownNodes = module.GetUnknownMPTNodesBatch(100)
require.True(t, len(unknownNodes) > 0)
require.NotContains(t, unknownNodes, expectedHeader.PrevStateRoot)
require.Equal(t, uint32(stateSyncPoint), module.BlockHeight())
// add the rest of MPT nodes and jump to state
alreadyRequested := make(map[util.Uint256]struct{})
for {
unknownHashes := module.GetUnknownMPTNodesBatch(1) // restore nodes one-by-one
if len(unknownHashes) == 0 {
break
}
if _, ok := alreadyRequested[unknownHashes[0]]; ok {
t.Fatal("bug: node was requested twice")
}
alreadyRequested[unknownHashes[0]] = struct{}{}
var callbackCalled bool
err := bcSpout.GetStateSyncModule().Traverse(unknownHashes[0], func(node mpt.Node, nodeBytes []byte) bool {
require.NoError(t, module.AddMPTNodes([][]byte{bytes.Clone(nodeBytes)}))
callbackCalled = true
return true // add nodes one-by-one
})
require.NoError(t, err)
require.True(t, callbackCalled)
}
// check that module is inactive and statejump is completed
require.False(t, module.IsActive())
require.False(t, module.NeedHeaders())
require.False(t, module.NeedMPTNodes())
unknownNodes = module.GetUnknownMPTNodesBatch(1)
require.True(t, len(unknownNodes) == 0)
require.Equal(t, uint32(stateSyncPoint), module.BlockHeight())
require.Equal(t, uint32(stateSyncPoint), bcBolt.BlockHeight())
// create new module from completed state: the module should recognise that state sync is completed
module = bcBolt.GetStateSyncModule()
require.NoError(t, module.Init(bcSpout.BlockHeight()))
require.False(t, module.IsActive())
require.False(t, module.NeedHeaders())
require.False(t, module.NeedMPTNodes())
unknownNodes = module.GetUnknownMPTNodesBatch(1)
require.True(t, len(unknownNodes) == 0)
require.Equal(t, uint32(stateSyncPoint), module.BlockHeight())
require.Equal(t, uint32(stateSyncPoint), bcBolt.BlockHeight())
// add one more block to the restored chain and start new module: the module should recognise state sync is completed
// and regular blocks processing was started
eBolt.AddNewBlock(t)
module = bcBolt.GetStateSyncModule()
require.NoError(t, module.Init(bcSpout.BlockHeight()))
require.False(t, module.IsActive())
require.False(t, module.NeedHeaders())
require.False(t, module.NeedMPTNodes())
unknownNodes = module.GetUnknownMPTNodesBatch(1)
require.True(t, len(unknownNodes) == 0)
require.Equal(t, uint32(stateSyncPoint)+1, module.BlockHeight())
require.Equal(t, uint32(stateSyncPoint)+1, bcBolt.BlockHeight())
})
}
func TestStateSyncModule_RestoreBasicChain(t *testing.T) {
check := func(t *testing.T, spoutEnableGC bool) {
const (
stateSyncInterval = 4
maxTraceable = 6
stateSyncPoint = 24
)
spoutCfg := func(c *config.Blockchain) {
c.Ledger.KeepOnlyLatestState = spoutEnableGC
c.Ledger.RemoveUntraceableBlocks = spoutEnableGC
c.StateRootInHeader = true
c.P2PStateExchangeExtensions = true
c.StateSyncInterval = stateSyncInterval
c.MaxTraceableBlocks = maxTraceable
c.P2PSigExtensions = true // `basicchain.Init` assumes Notary is enabled.
}
bcSpoutStore := storage.NewMemoryStore()
bcSpout, validators, committee := chain.NewMultiWithCustomConfigAndStore(t, spoutCfg, bcSpoutStore, false)
go bcSpout.Run() // Will close it manually at the end.
e := neotest.NewExecutor(t, bcSpout, validators, committee)
basicchain.Init(t, "../../../", e)
// make spout chain higher than latest state sync point (add several blocks up to stateSyncPoint+2)
e.AddNewBlock(t)
e.AddNewBlock(t) // This block is stateSyncPoint-th block.
e.AddNewBlock(t)
require.Equal(t, stateSyncPoint+2, int(bcSpout.BlockHeight()))
boltCfg := func(c *config.Blockchain) {
spoutCfg(c)
c.Ledger.KeepOnlyLatestState = true
c.Ledger.RemoveUntraceableBlocks = true
}
bcBoltStore := storage.NewMemoryStore()
bcBolt, _, _ := chain.NewMultiWithCustomConfigAndStore(t, boltCfg, bcBoltStore, false)
go bcBolt.Run() // Will close it manually at the end.
module := bcBolt.GetStateSyncModule()
t.Run("error: add headers before initialisation", func(t *testing.T) {
h, err := bcSpout.GetHeader(bcSpout.GetHeaderHash(1))
require.NoError(t, err)
require.Error(t, module.AddHeaders(h))
})
t.Run("no error: add blocks before initialisation", func(t *testing.T) {
b, err := bcSpout.GetBlock(bcSpout.GetHeaderHash(bcSpout.BlockHeight()))
require.NoError(t, err)
require.NoError(t, module.AddBlock(b))
})
t.Run("error: add MPT nodes without initialisation", func(t *testing.T) {
require.Error(t, module.AddMPTNodes([][]byte{}))
})
require.NoError(t, module.Init(bcSpout.BlockHeight()))
require.True(t, module.IsActive())
require.True(t, module.IsInitialized())
require.True(t, module.NeedHeaders())
require.False(t, module.NeedMPTNodes())
// add headers to module
headers := make([]*block.Header, 0, bcSpout.HeaderHeight())
for i := uint32(1); i <= bcSpout.HeaderHeight(); i++ {
h, err := bcSpout.GetHeader(bcSpout.GetHeaderHash(i))
require.NoError(t, err)
headers = append(headers, h)
}
require.NoError(t, module.AddHeaders(headers...))
require.True(t, module.IsActive())
require.True(t, module.IsInitialized())
require.False(t, module.NeedHeaders())
require.True(t, module.NeedMPTNodes())
require.Equal(t, bcSpout.HeaderHeight(), bcBolt.HeaderHeight())
// add blocks
t.Run("error: unexpected block index", func(t *testing.T) {
b, err := bcSpout.GetBlock(bcSpout.GetHeaderHash(stateSyncPoint - maxTraceable))
require.NoError(t, err)
require.Error(t, module.AddBlock(b))
})
t.Run("error: missing state root in block header", func(t *testing.T) {
b := &block.Block{
Header: block.Header{
Index: uint32(stateSyncPoint) - maxTraceable + 1,
StateRootEnabled: false,
},
}
require.Error(t, module.AddBlock(b))
})
t.Run("error: invalid block merkle root", func(t *testing.T) {
b := &block.Block{
Header: block.Header{
Index: uint32(stateSyncPoint) - maxTraceable + 1,
StateRootEnabled: true,
MerkleRoot: util.Uint256{1, 2, 3},
},
}
require.Error(t, module.AddBlock(b))
})
for i := uint32(stateSyncPoint - maxTraceable + 1); i <= stateSyncPoint; i++ {
b, err := bcSpout.GetBlock(bcSpout.GetHeaderHash(i))
require.NoError(t, err)
require.NoError(t, module.AddBlock(b))
}
require.True(t, module.IsActive())
require.True(t, module.IsInitialized())
require.False(t, module.NeedHeaders())
require.True(t, module.NeedMPTNodes())
require.Equal(t, uint32(stateSyncPoint), module.BlockHeight())
// add MPT nodes in batches
h, err := bcSpout.GetHeader(bcSpout.GetHeaderHash(stateSyncPoint + 1))
require.NoError(t, err)
unknownHashes := module.GetUnknownMPTNodesBatch(100)
require.Equal(t, 1, len(unknownHashes))
require.Equal(t, h.PrevStateRoot, unknownHashes[0])
nodesMap := make(map[util.Uint256][]byte)
sm := bcSpout.GetStateModule()
sroo, err := sm.GetStateRoot(uint32(stateSyncPoint))
require.NoError(t, err)
require.Equal(t, sroo.Root, h.PrevStateRoot)
err = bcSpout.GetStateSyncModule().Traverse(h.PrevStateRoot, func(n mpt.Node, nodeBytes []byte) bool {
nodesMap[n.Hash()] = nodeBytes
return false
})
require.NoError(t, err)
for {
need := module.GetUnknownMPTNodesBatch(10)
if len(need) == 0 {
break
}
add := make([][]byte, len(need))
for i, h := range need {
nodeBytes, ok := nodesMap[h]
if !ok {
t.Fatal("unknown or restored node requested")
}
add[i] = nodeBytes
delete(nodesMap, h)
}
require.NoError(t, module.AddMPTNodes(add))
}
require.False(t, module.IsActive())
require.False(t, module.NeedHeaders())
require.False(t, module.NeedMPTNodes())
unknownNodes := module.GetUnknownMPTNodesBatch(1)
require.True(t, len(unknownNodes) == 0)
require.Equal(t, uint32(stateSyncPoint), module.BlockHeight())
require.Equal(t, uint32(stateSyncPoint), bcBolt.BlockHeight())
// add missing blocks to bcBolt: should be ok, because state is synced
for i := uint32(stateSyncPoint + 1); i <= bcSpout.BlockHeight(); i++ {
b, err := bcSpout.GetBlock(bcSpout.GetHeaderHash(i))
require.NoError(t, err)
require.NoError(t, bcBolt.AddBlock(b))
}
require.Equal(t, bcSpout.BlockHeight(), bcBolt.BlockHeight())
// compare storage states
fetchStorage := func(ps storage.Store, storagePrefix byte) []storage.KeyValue {
var kv []storage.KeyValue
ps.Seek(storage.SeekRange{Prefix: []byte{storagePrefix}}, func(k, v []byte) bool {
key := bytes.Clone(k)
value := bytes.Clone(v)
if key[0] == byte(storage.STTempStorage) {
key[0] = byte(storage.STStorage)
}
kv = append(kv, storage.KeyValue{
Key: key,
Value: value,
})
return true
})
return kv
}
// Both blockchains are running, so we need to wait until recent changes will be persisted
// to the underlying backend store. Close blockchains to ensure persist was completed.
bcSpout.Close()
bcBolt.Close()
expected := fetchStorage(bcSpoutStore, byte(storage.STStorage))
actual := fetchStorage(bcBoltStore, byte(storage.STTempStorage))
require.ElementsMatch(t, expected, actual)
// no temp items should be left
var haveItems bool
bcBoltStore.Seek(storage.SeekRange{Prefix: []byte{byte(storage.STStorage)}}, func(_, _ []byte) bool {
haveItems = true
return false
})
require.False(t, haveItems)
}
t.Run("source node is archive", func(t *testing.T) {
check(t, false)
})
t.Run("source node is light with GC", func(t *testing.T) {
check(t, true)
})
}
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