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-rw-r--r--light/lightchain.go14
-rw-r--r--light/odr.go4
-rw-r--r--light/postprocess.go170
3 files changed, 143 insertions, 45 deletions
diff --git a/light/lightchain.go b/light/lightchain.go
index 30b9bd89a..b7e629e88 100644
--- a/light/lightchain.go
+++ b/light/lightchain.go
@@ -116,19 +116,19 @@ func NewLightChain(odr OdrBackend, config *params.ChainConfig, engine consensus.
}
// addTrustedCheckpoint adds a trusted checkpoint to the blockchain
-func (self *LightChain) addTrustedCheckpoint(cp trustedCheckpoint) {
+func (self *LightChain) addTrustedCheckpoint(cp TrustedCheckpoint) {
if self.odr.ChtIndexer() != nil {
- StoreChtRoot(self.chainDb, cp.sectionIdx, cp.sectionHead, cp.chtRoot)
- self.odr.ChtIndexer().AddKnownSectionHead(cp.sectionIdx, cp.sectionHead)
+ StoreChtRoot(self.chainDb, cp.SectionIdx, cp.SectionHead, cp.CHTRoot)
+ self.odr.ChtIndexer().AddKnownSectionHead(cp.SectionIdx, cp.SectionHead)
}
if self.odr.BloomTrieIndexer() != nil {
- StoreBloomTrieRoot(self.chainDb, cp.sectionIdx, cp.sectionHead, cp.bloomTrieRoot)
- self.odr.BloomTrieIndexer().AddKnownSectionHead(cp.sectionIdx, cp.sectionHead)
+ StoreBloomTrieRoot(self.chainDb, cp.SectionIdx, cp.SectionHead, cp.BloomRoot)
+ self.odr.BloomTrieIndexer().AddKnownSectionHead(cp.SectionIdx, cp.SectionHead)
}
if self.odr.BloomIndexer() != nil {
- self.odr.BloomIndexer().AddKnownSectionHead(cp.sectionIdx, cp.sectionHead)
+ self.odr.BloomIndexer().AddKnownSectionHead(cp.SectionIdx, cp.SectionHead)
}
- log.Info("Added trusted checkpoint", "chain", cp.name, "block", (cp.sectionIdx+1)*CHTFrequencyClient-1, "hash", cp.sectionHead)
+ log.Info("Added trusted checkpoint", "chain", cp.name, "block", (cp.SectionIdx+1)*CHTFrequencyClient-1, "hash", cp.SectionHead)
}
func (self *LightChain) getProcInterrupt() bool {
diff --git a/light/odr.go b/light/odr.go
index 8f1e50b81..83c64055a 100644
--- a/light/odr.go
+++ b/light/odr.go
@@ -20,6 +20,7 @@ package light
import (
"context"
+ "errors"
"math/big"
"github.com/ethereum/go-ethereum/common"
@@ -33,6 +34,9 @@ import (
// service is not required.
var NoOdr = context.Background()
+// ErrNoPeers is returned if no peers capable of serving a queued request are available
+var ErrNoPeers = errors.New("no suitable peers available")
+
// OdrBackend is an interface to a backend service that handles ODR retrievals type
type OdrBackend interface {
Database() ethdb.Database
diff --git a/light/postprocess.go b/light/postprocess.go
index 2090a9d04..0b25e1d88 100644
--- a/light/postprocess.go
+++ b/light/postprocess.go
@@ -17,8 +17,10 @@
package light
import (
+ "context"
"encoding/binary"
"errors"
+ "fmt"
"math/big"
"time"
@@ -47,35 +49,35 @@ const (
HelperTrieProcessConfirmations = 256 // number of confirmations before a HelperTrie is generated
)
-// trustedCheckpoint represents a set of post-processed trie roots (CHT and BloomTrie) associated with
+// TrustedCheckpoint represents a set of post-processed trie roots (CHT and BloomTrie) associated with
// the appropriate section index and head hash. It is used to start light syncing from this checkpoint
// and avoid downloading the entire header chain while still being able to securely access old headers/logs.
-type trustedCheckpoint struct {
- name string
- sectionIdx uint64
- sectionHead, chtRoot, bloomTrieRoot common.Hash
+type TrustedCheckpoint struct {
+ name string
+ SectionIdx uint64
+ SectionHead, CHTRoot, BloomRoot common.Hash
}
var (
- mainnetCheckpoint = trustedCheckpoint{
- name: "mainnet",
- sectionIdx: 179,
- sectionHead: common.HexToHash("ae778e455492db1183e566fa0c67f954d256fdd08618f6d5a393b0e24576d0ea"),
- chtRoot: common.HexToHash("646b338f9ca74d936225338916be53710ec84020b89946004a8605f04c817f16"),
- bloomTrieRoot: common.HexToHash("d0f978f5dbc86e5bf931d8dd5b2ecbebbda6dc78f8896af6a27b46a3ced0ac25"),
+ mainnetCheckpoint = TrustedCheckpoint{
+ name: "mainnet",
+ SectionIdx: 179,
+ SectionHead: common.HexToHash("ae778e455492db1183e566fa0c67f954d256fdd08618f6d5a393b0e24576d0ea"),
+ CHTRoot: common.HexToHash("646b338f9ca74d936225338916be53710ec84020b89946004a8605f04c817f16"),
+ BloomRoot: common.HexToHash("d0f978f5dbc86e5bf931d8dd5b2ecbebbda6dc78f8896af6a27b46a3ced0ac25"),
}
- ropstenCheckpoint = trustedCheckpoint{
- name: "ropsten",
- sectionIdx: 107,
- sectionHead: common.HexToHash("e1988f95399debf45b873e065e5cd61b416ef2e2e5deec5a6f87c3127086e1ce"),
- chtRoot: common.HexToHash("15cba18e4de0ab1e95e202625199ba30147aec8b0b70384b66ebea31ba6a18e0"),
- bloomTrieRoot: common.HexToHash("e00fa6389b2e597d9df52172cd8e936879eed0fca4fa59db99e2c8ed682562f2"),
+ ropstenCheckpoint = TrustedCheckpoint{
+ name: "ropsten",
+ SectionIdx: 107,
+ SectionHead: common.HexToHash("e1988f95399debf45b873e065e5cd61b416ef2e2e5deec5a6f87c3127086e1ce"),
+ CHTRoot: common.HexToHash("15cba18e4de0ab1e95e202625199ba30147aec8b0b70384b66ebea31ba6a18e0"),
+ BloomRoot: common.HexToHash("e00fa6389b2e597d9df52172cd8e936879eed0fca4fa59db99e2c8ed682562f2"),
}
)
// trustedCheckpoints associates each known checkpoint with the genesis hash of the chain it belongs to
-var trustedCheckpoints = map[common.Hash]trustedCheckpoint{
+var trustedCheckpoints = map[common.Hash]TrustedCheckpoint{
params.MainnetGenesisHash: mainnetCheckpoint,
params.TestnetGenesisHash: ropstenCheckpoint,
}
@@ -119,7 +121,8 @@ func StoreChtRoot(db ethdb.Database, sectionIdx uint64, sectionHead, root common
// ChtIndexerBackend implements core.ChainIndexerBackend
type ChtIndexerBackend struct {
- diskdb ethdb.Database
+ diskdb, trieTable ethdb.Database
+ odr OdrBackend
triedb *trie.Database
section, sectionSize uint64
lastHash common.Hash
@@ -127,7 +130,7 @@ type ChtIndexerBackend struct {
}
// NewBloomTrieIndexer creates a BloomTrie chain indexer
-func NewChtIndexer(db ethdb.Database, clientMode bool) *core.ChainIndexer {
+func NewChtIndexer(db ethdb.Database, clientMode bool, odr OdrBackend) *core.ChainIndexer {
var sectionSize, confirmReq uint64
if clientMode {
sectionSize = CHTFrequencyClient
@@ -137,28 +140,64 @@ func NewChtIndexer(db ethdb.Database, clientMode bool) *core.ChainIndexer {
confirmReq = HelperTrieProcessConfirmations
}
idb := ethdb.NewTable(db, "chtIndex-")
+ trieTable := ethdb.NewTable(db, ChtTablePrefix)
backend := &ChtIndexerBackend{
diskdb: db,
- triedb: trie.NewDatabase(ethdb.NewTable(db, ChtTablePrefix)),
+ odr: odr,
+ trieTable: trieTable,
+ triedb: trie.NewDatabase(trieTable),
sectionSize: sectionSize,
}
return core.NewChainIndexer(db, idb, backend, sectionSize, confirmReq, time.Millisecond*100, "cht")
}
+// fetchMissingNodes tries to retrieve the last entry of the latest trusted CHT from the
+// ODR backend in order to be able to add new entries and calculate subsequent root hashes
+func (c *ChtIndexerBackend) fetchMissingNodes(ctx context.Context, section uint64, root common.Hash) error {
+ batch := c.trieTable.NewBatch()
+ r := &ChtRequest{ChtRoot: root, ChtNum: section - 1, BlockNum: section*c.sectionSize - 1}
+ for {
+ err := c.odr.Retrieve(ctx, r)
+ switch err {
+ case nil:
+ r.Proof.Store(batch)
+ return batch.Write()
+ case ErrNoPeers:
+ // if there are no peers to serve, retry later
+ select {
+ case <-ctx.Done():
+ return ctx.Err()
+ case <-time.After(time.Second * 10):
+ // stay in the loop and try again
+ }
+ default:
+ return err
+ }
+ }
+}
+
// Reset implements core.ChainIndexerBackend
-func (c *ChtIndexerBackend) Reset(section uint64, lastSectionHead common.Hash) error {
+func (c *ChtIndexerBackend) Reset(ctx context.Context, section uint64, lastSectionHead common.Hash) error {
var root common.Hash
if section > 0 {
root = GetChtRoot(c.diskdb, section-1, lastSectionHead)
}
var err error
c.trie, err = trie.New(root, c.triedb)
+
+ if err != nil && c.odr != nil {
+ err = c.fetchMissingNodes(ctx, section, root)
+ if err == nil {
+ c.trie, err = trie.New(root, c.triedb)
+ }
+ }
+
c.section = section
return err
}
// Process implements core.ChainIndexerBackend
-func (c *ChtIndexerBackend) Process(header *types.Header) {
+func (c *ChtIndexerBackend) Process(ctx context.Context, header *types.Header) error {
hash, num := header.Hash(), header.Number.Uint64()
c.lastHash = hash
@@ -170,6 +209,7 @@ func (c *ChtIndexerBackend) Process(header *types.Header) {
binary.BigEndian.PutUint64(encNumber[:], num)
data, _ := rlp.EncodeToBytes(ChtNode{hash, td})
c.trie.Update(encNumber[:], data)
+ return nil
}
// Commit implements core.ChainIndexerBackend
@@ -181,16 +221,15 @@ func (c *ChtIndexerBackend) Commit() error {
c.triedb.Commit(root, false)
if ((c.section+1)*c.sectionSize)%CHTFrequencyClient == 0 {
- log.Info("Storing CHT", "section", c.section*c.sectionSize/CHTFrequencyClient, "head", c.lastHash, "root", root)
+ log.Info("Storing CHT", "section", c.section*c.sectionSize/CHTFrequencyClient, "head", fmt.Sprintf("%064x", c.lastHash), "root", fmt.Sprintf("%064x", root))
}
StoreChtRoot(c.diskdb, c.section, c.lastHash, root)
return nil
}
const (
- BloomTrieFrequency = 32768
- ethBloomBitsSection = 4096
- ethBloomBitsConfirmations = 256
+ BloomTrieFrequency = 32768
+ ethBloomBitsSection = 4096
)
var (
@@ -215,7 +254,8 @@ func StoreBloomTrieRoot(db ethdb.Database, sectionIdx uint64, sectionHead, root
// BloomTrieIndexerBackend implements core.ChainIndexerBackend
type BloomTrieIndexerBackend struct {
- diskdb ethdb.Database
+ diskdb, trieTable ethdb.Database
+ odr OdrBackend
triedb *trie.Database
section, parentSectionSize, bloomTrieRatio uint64
trie *trie.Trie
@@ -223,44 +263,98 @@ type BloomTrieIndexerBackend struct {
}
// NewBloomTrieIndexer creates a BloomTrie chain indexer
-func NewBloomTrieIndexer(db ethdb.Database, clientMode bool) *core.ChainIndexer {
+func NewBloomTrieIndexer(db ethdb.Database, clientMode bool, odr OdrBackend) *core.ChainIndexer {
+ trieTable := ethdb.NewTable(db, BloomTrieTablePrefix)
backend := &BloomTrieIndexerBackend{
- diskdb: db,
- triedb: trie.NewDatabase(ethdb.NewTable(db, BloomTrieTablePrefix)),
+ diskdb: db,
+ odr: odr,
+ trieTable: trieTable,
+ triedb: trie.NewDatabase(trieTable),
}
idb := ethdb.NewTable(db, "bltIndex-")
- var confirmReq uint64
if clientMode {
backend.parentSectionSize = BloomTrieFrequency
- confirmReq = HelperTrieConfirmations
} else {
backend.parentSectionSize = ethBloomBitsSection
- confirmReq = HelperTrieProcessConfirmations
}
backend.bloomTrieRatio = BloomTrieFrequency / backend.parentSectionSize
backend.sectionHeads = make([]common.Hash, backend.bloomTrieRatio)
- return core.NewChainIndexer(db, idb, backend, BloomTrieFrequency, confirmReq-ethBloomBitsConfirmations, time.Millisecond*100, "bloomtrie")
+ return core.NewChainIndexer(db, idb, backend, BloomTrieFrequency, 0, time.Millisecond*100, "bloomtrie")
+}
+
+// fetchMissingNodes tries to retrieve the last entries of the latest trusted bloom trie from the
+// ODR backend in order to be able to add new entries and calculate subsequent root hashes
+func (b *BloomTrieIndexerBackend) fetchMissingNodes(ctx context.Context, section uint64, root common.Hash) error {
+ indexCh := make(chan uint, types.BloomBitLength)
+ type res struct {
+ nodes *NodeSet
+ err error
+ }
+ resCh := make(chan res, types.BloomBitLength)
+ for i := 0; i < 20; i++ {
+ go func() {
+ for bitIndex := range indexCh {
+ r := &BloomRequest{BloomTrieRoot: root, BloomTrieNum: section - 1, BitIdx: bitIndex, SectionIdxList: []uint64{section - 1}}
+ for {
+ if err := b.odr.Retrieve(ctx, r); err == ErrNoPeers {
+ // if there are no peers to serve, retry later
+ select {
+ case <-ctx.Done():
+ resCh <- res{nil, ctx.Err()}
+ return
+ case <-time.After(time.Second * 10):
+ // stay in the loop and try again
+ }
+ } else {
+ resCh <- res{r.Proofs, err}
+ break
+ }
+ }
+ }
+ }()
+ }
+
+ for i := uint(0); i < types.BloomBitLength; i++ {
+ indexCh <- i
+ }
+ close(indexCh)
+ batch := b.trieTable.NewBatch()
+ for i := uint(0); i < types.BloomBitLength; i++ {
+ res := <-resCh
+ if res.err != nil {
+ return res.err
+ }
+ res.nodes.Store(batch)
+ }
+ return batch.Write()
}
// Reset implements core.ChainIndexerBackend
-func (b *BloomTrieIndexerBackend) Reset(section uint64, lastSectionHead common.Hash) error {
+func (b *BloomTrieIndexerBackend) Reset(ctx context.Context, section uint64, lastSectionHead common.Hash) error {
var root common.Hash
if section > 0 {
root = GetBloomTrieRoot(b.diskdb, section-1, lastSectionHead)
}
var err error
b.trie, err = trie.New(root, b.triedb)
+ if err != nil && b.odr != nil {
+ err = b.fetchMissingNodes(ctx, section, root)
+ if err == nil {
+ b.trie, err = trie.New(root, b.triedb)
+ }
+ }
b.section = section
return err
}
// Process implements core.ChainIndexerBackend
-func (b *BloomTrieIndexerBackend) Process(header *types.Header) {
+func (b *BloomTrieIndexerBackend) Process(ctx context.Context, header *types.Header) error {
num := header.Number.Uint64() - b.section*BloomTrieFrequency
if (num+1)%b.parentSectionSize == 0 {
b.sectionHeads[num/b.parentSectionSize] = header.Hash()
}
+ return nil
}
// Commit implements core.ChainIndexerBackend
@@ -300,7 +394,7 @@ func (b *BloomTrieIndexerBackend) Commit() error {
b.triedb.Commit(root, false)
sectionHead := b.sectionHeads[b.bloomTrieRatio-1]
- log.Info("Storing bloom trie", "section", b.section, "head", sectionHead, "root", root, "compression", float64(compSize)/float64(decompSize))
+ log.Info("Storing bloom trie", "section", b.section, "head", fmt.Sprintf("%064x", sectionHead), "root", fmt.Sprintf("%064x", root), "compression", float64(compSize)/float64(decompSize))
StoreBloomTrieRoot(b.diskdb, b.section, sectionHead, root)
return nil
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-17 14:13:25 +0800