586 lines
19 KiB
Go
586 lines
19 KiB
Go
// Copyright 2015 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package trie
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import (
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"bytes"
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"fmt"
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"testing"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/rawdb"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/ethdb/memorydb"
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)
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// makeTestTrie create a sample test trie to test node-wise reconstruction.
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func makeTestTrie() (*Database, *StateTrie, map[string][]byte) {
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// Create an empty trie
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triedb := NewDatabase(rawdb.NewMemoryDatabase())
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trie, _ := NewStateTrie(TrieID(common.Hash{}), triedb)
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// Fill it with some arbitrary data
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content := make(map[string][]byte)
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for i := byte(0); i < 255; i++ {
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// Map the same data under multiple keys
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key, val := common.LeftPadBytes([]byte{1, i}, 32), []byte{i}
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content[string(key)] = val
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trie.Update(key, val)
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key, val = common.LeftPadBytes([]byte{2, i}, 32), []byte{i}
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content[string(key)] = val
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trie.Update(key, val)
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// Add some other data to inflate the trie
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for j := byte(3); j < 13; j++ {
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key, val = common.LeftPadBytes([]byte{j, i}, 32), []byte{j, i}
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content[string(key)] = val
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trie.Update(key, val)
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}
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}
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root, nodes := trie.Commit(false)
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if err := triedb.Update(NewWithNodeSet(nodes)); err != nil {
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panic(fmt.Errorf("failed to commit db %v", err))
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}
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// Re-create the trie based on the new state
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trie, _ = NewStateTrie(TrieID(root), triedb)
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return triedb, trie, content
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}
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// checkTrieContents cross references a reconstructed trie with an expected data
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// content map.
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func checkTrieContents(t *testing.T, db *Database, root []byte, content map[string][]byte) {
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// Check root availability and trie contents
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trie, err := NewStateTrie(TrieID(common.BytesToHash(root)), db)
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if err != nil {
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t.Fatalf("failed to create trie at %x: %v", root, err)
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}
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if err := checkTrieConsistency(db, common.BytesToHash(root)); err != nil {
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t.Fatalf("inconsistent trie at %x: %v", root, err)
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}
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for key, val := range content {
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if have := trie.Get([]byte(key)); !bytes.Equal(have, val) {
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t.Errorf("entry %x: content mismatch: have %x, want %x", key, have, val)
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}
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}
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}
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// checkTrieConsistency checks that all nodes in a trie are indeed present.
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func checkTrieConsistency(db *Database, root common.Hash) error {
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// Create and iterate a trie rooted in a subnode
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trie, err := NewStateTrie(TrieID(root), db)
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if err != nil {
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return nil // Consider a non existent state consistent
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}
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it := trie.NodeIterator(nil)
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for it.Next(true) {
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}
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return it.Error()
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}
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// trieElement represents the element in the state trie(bytecode or trie node).
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type trieElement struct {
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path string
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hash common.Hash
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syncPath SyncPath
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}
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// Tests that an empty trie is not scheduled for syncing.
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func TestEmptySync(t *testing.T) {
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dbA := NewDatabase(rawdb.NewMemoryDatabase())
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dbB := NewDatabase(rawdb.NewMemoryDatabase())
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emptyA, _ := New(TrieID(common.Hash{}), dbA)
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emptyB, _ := New(TrieID(emptyRoot), dbB)
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for i, trie := range []*Trie{emptyA, emptyB} {
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sync := NewSync(trie.Hash(), memorydb.New(), nil, []*Database{dbA, dbB}[i].Scheme())
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if paths, nodes, codes := sync.Missing(1); len(paths) != 0 || len(nodes) != 0 || len(codes) != 0 {
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t.Errorf("test %d: content requested for empty trie: %v, %v, %v", i, paths, nodes, codes)
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}
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}
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}
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// Tests that given a root hash, a trie can sync iteratively on a single thread,
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// requesting retrieval tasks and returning all of them in one go.
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func TestIterativeSyncIndividual(t *testing.T) { testIterativeSync(t, 1, false) }
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func TestIterativeSyncBatched(t *testing.T) { testIterativeSync(t, 100, false) }
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func TestIterativeSyncIndividualByPath(t *testing.T) { testIterativeSync(t, 1, true) }
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func TestIterativeSyncBatchedByPath(t *testing.T) { testIterativeSync(t, 100, true) }
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func testIterativeSync(t *testing.T, count int, bypath bool) {
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// Create a random trie to copy
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srcDb, srcTrie, srcData := makeTestTrie()
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// Create a destination trie and sync with the scheduler
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diskdb := rawdb.NewMemoryDatabase()
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triedb := NewDatabase(diskdb)
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sched := NewSync(srcTrie.Hash(), diskdb, nil, srcDb.Scheme())
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// The code requests are ignored here since there is no code
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// at the testing trie.
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paths, nodes, _ := sched.Missing(count)
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var elements []trieElement
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for i := 0; i < len(paths); i++ {
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elements = append(elements, trieElement{
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path: paths[i],
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hash: nodes[i],
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syncPath: NewSyncPath([]byte(paths[i])),
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})
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}
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for len(elements) > 0 {
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results := make([]NodeSyncResult, len(elements))
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if !bypath {
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for i, element := range elements {
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data, err := srcDb.Node(element.hash)
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if err != nil {
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t.Fatalf("failed to retrieve node data for hash %x: %v", element.hash, err)
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}
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results[i] = NodeSyncResult{element.path, data}
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}
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} else {
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for i, element := range elements {
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data, _, err := srcTrie.TryGetNode(element.syncPath[len(element.syncPath)-1])
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if err != nil {
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t.Fatalf("failed to retrieve node data for path %x: %v", element.path, err)
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}
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results[i] = NodeSyncResult{element.path, data}
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}
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}
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for _, result := range results {
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if err := sched.ProcessNode(result); err != nil {
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t.Fatalf("failed to process result %v", err)
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}
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}
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batch := diskdb.NewBatch()
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if err := sched.Commit(batch); err != nil {
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t.Fatalf("failed to commit data: %v", err)
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}
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batch.Write()
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paths, nodes, _ = sched.Missing(count)
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elements = elements[:0]
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for i := 0; i < len(paths); i++ {
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elements = append(elements, trieElement{
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path: paths[i],
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hash: nodes[i],
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syncPath: NewSyncPath([]byte(paths[i])),
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})
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}
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}
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// Cross check that the two tries are in sync
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checkTrieContents(t, triedb, srcTrie.Hash().Bytes(), srcData)
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}
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// Tests that the trie scheduler can correctly reconstruct the state even if only
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// partial results are returned, and the others sent only later.
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func TestIterativeDelayedSync(t *testing.T) {
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// Create a random trie to copy
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srcDb, srcTrie, srcData := makeTestTrie()
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// Create a destination trie and sync with the scheduler
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diskdb := rawdb.NewMemoryDatabase()
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triedb := NewDatabase(diskdb)
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sched := NewSync(srcTrie.Hash(), diskdb, nil, srcDb.Scheme())
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// The code requests are ignored here since there is no code
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// at the testing trie.
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paths, nodes, _ := sched.Missing(10000)
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var elements []trieElement
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for i := 0; i < len(paths); i++ {
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elements = append(elements, trieElement{
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path: paths[i],
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hash: nodes[i],
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syncPath: NewSyncPath([]byte(paths[i])),
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})
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}
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for len(elements) > 0 {
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// Sync only half of the scheduled nodes
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results := make([]NodeSyncResult, len(elements)/2+1)
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for i, element := range elements[:len(results)] {
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data, err := srcDb.Node(element.hash)
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if err != nil {
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t.Fatalf("failed to retrieve node data for %x: %v", element.hash, err)
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}
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results[i] = NodeSyncResult{element.path, data}
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}
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for _, result := range results {
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if err := sched.ProcessNode(result); err != nil {
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t.Fatalf("failed to process result %v", err)
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}
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}
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batch := diskdb.NewBatch()
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if err := sched.Commit(batch); err != nil {
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t.Fatalf("failed to commit data: %v", err)
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}
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batch.Write()
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paths, nodes, _ = sched.Missing(10000)
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elements = elements[len(results):]
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for i := 0; i < len(paths); i++ {
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elements = append(elements, trieElement{
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path: paths[i],
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hash: nodes[i],
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syncPath: NewSyncPath([]byte(paths[i])),
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})
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}
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}
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// Cross check that the two tries are in sync
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checkTrieContents(t, triedb, srcTrie.Hash().Bytes(), srcData)
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}
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// Tests that given a root hash, a trie can sync iteratively on a single thread,
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// requesting retrieval tasks and returning all of them in one go, however in a
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// random order.
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func TestIterativeRandomSyncIndividual(t *testing.T) { testIterativeRandomSync(t, 1) }
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func TestIterativeRandomSyncBatched(t *testing.T) { testIterativeRandomSync(t, 100) }
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func testIterativeRandomSync(t *testing.T, count int) {
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// Create a random trie to copy
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srcDb, srcTrie, srcData := makeTestTrie()
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// Create a destination trie and sync with the scheduler
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diskdb := rawdb.NewMemoryDatabase()
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triedb := NewDatabase(diskdb)
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sched := NewSync(srcTrie.Hash(), diskdb, nil, srcDb.Scheme())
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// The code requests are ignored here since there is no code
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// at the testing trie.
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paths, nodes, _ := sched.Missing(count)
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queue := make(map[string]trieElement)
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for i, path := range paths {
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queue[path] = trieElement{
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path: paths[i],
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hash: nodes[i],
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syncPath: NewSyncPath([]byte(paths[i])),
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}
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}
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for len(queue) > 0 {
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// Fetch all the queued nodes in a random order
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results := make([]NodeSyncResult, 0, len(queue))
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for path, element := range queue {
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data, err := srcDb.Node(element.hash)
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if err != nil {
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t.Fatalf("failed to retrieve node data for %x: %v", element.hash, err)
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}
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results = append(results, NodeSyncResult{path, data})
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}
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// Feed the retrieved results back and queue new tasks
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for _, result := range results {
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if err := sched.ProcessNode(result); err != nil {
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t.Fatalf("failed to process result %v", err)
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}
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}
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batch := diskdb.NewBatch()
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if err := sched.Commit(batch); err != nil {
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t.Fatalf("failed to commit data: %v", err)
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}
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batch.Write()
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paths, nodes, _ = sched.Missing(count)
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queue = make(map[string]trieElement)
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for i, path := range paths {
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queue[path] = trieElement{
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path: path,
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hash: nodes[i],
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syncPath: NewSyncPath([]byte(path)),
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}
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}
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}
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// Cross check that the two tries are in sync
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checkTrieContents(t, triedb, srcTrie.Hash().Bytes(), srcData)
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}
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// Tests that the trie scheduler can correctly reconstruct the state even if only
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// partial results are returned (Even those randomly), others sent only later.
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func TestIterativeRandomDelayedSync(t *testing.T) {
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// Create a random trie to copy
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srcDb, srcTrie, srcData := makeTestTrie()
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// Create a destination trie and sync with the scheduler
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diskdb := rawdb.NewMemoryDatabase()
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triedb := NewDatabase(diskdb)
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sched := NewSync(srcTrie.Hash(), diskdb, nil, srcDb.Scheme())
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// The code requests are ignored here since there is no code
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// at the testing trie.
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paths, nodes, _ := sched.Missing(10000)
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queue := make(map[string]trieElement)
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for i, path := range paths {
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queue[path] = trieElement{
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path: path,
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hash: nodes[i],
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syncPath: NewSyncPath([]byte(path)),
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}
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}
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for len(queue) > 0 {
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// Sync only half of the scheduled nodes, even those in random order
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results := make([]NodeSyncResult, 0, len(queue)/2+1)
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for path, element := range queue {
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data, err := srcDb.Node(element.hash)
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if err != nil {
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t.Fatalf("failed to retrieve node data for %x: %v", element.hash, err)
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}
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results = append(results, NodeSyncResult{path, data})
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if len(results) >= cap(results) {
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break
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}
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}
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// Feed the retrieved results back and queue new tasks
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for _, result := range results {
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if err := sched.ProcessNode(result); err != nil {
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t.Fatalf("failed to process result %v", err)
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}
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}
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batch := diskdb.NewBatch()
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if err := sched.Commit(batch); err != nil {
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t.Fatalf("failed to commit data: %v", err)
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}
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batch.Write()
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for _, result := range results {
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delete(queue, result.Path)
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}
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paths, nodes, _ = sched.Missing(10000)
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for i, path := range paths {
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queue[path] = trieElement{
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path: path,
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hash: nodes[i],
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syncPath: NewSyncPath([]byte(path)),
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}
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}
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}
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// Cross check that the two tries are in sync
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checkTrieContents(t, triedb, srcTrie.Hash().Bytes(), srcData)
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}
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// Tests that a trie sync will not request nodes multiple times, even if they
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// have such references.
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func TestDuplicateAvoidanceSync(t *testing.T) {
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// Create a random trie to copy
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srcDb, srcTrie, srcData := makeTestTrie()
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// Create a destination trie and sync with the scheduler
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diskdb := rawdb.NewMemoryDatabase()
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triedb := NewDatabase(diskdb)
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sched := NewSync(srcTrie.Hash(), diskdb, nil, srcDb.Scheme())
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// The code requests are ignored here since there is no code
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// at the testing trie.
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paths, nodes, _ := sched.Missing(0)
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var elements []trieElement
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for i := 0; i < len(paths); i++ {
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elements = append(elements, trieElement{
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path: paths[i],
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hash: nodes[i],
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syncPath: NewSyncPath([]byte(paths[i])),
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})
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}
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requested := make(map[common.Hash]struct{})
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for len(elements) > 0 {
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results := make([]NodeSyncResult, len(elements))
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for i, element := range elements {
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data, err := srcDb.Node(element.hash)
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if err != nil {
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t.Fatalf("failed to retrieve node data for %x: %v", element.hash, err)
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}
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if _, ok := requested[element.hash]; ok {
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t.Errorf("hash %x already requested once", element.hash)
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}
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requested[element.hash] = struct{}{}
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results[i] = NodeSyncResult{element.path, data}
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}
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for _, result := range results {
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if err := sched.ProcessNode(result); err != nil {
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t.Fatalf("failed to process result %v", err)
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}
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}
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batch := diskdb.NewBatch()
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if err := sched.Commit(batch); err != nil {
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t.Fatalf("failed to commit data: %v", err)
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}
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batch.Write()
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paths, nodes, _ = sched.Missing(0)
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elements = elements[:0]
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for i := 0; i < len(paths); i++ {
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elements = append(elements, trieElement{
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path: paths[i],
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hash: nodes[i],
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syncPath: NewSyncPath([]byte(paths[i])),
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})
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}
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}
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// Cross check that the two tries are in sync
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checkTrieContents(t, triedb, srcTrie.Hash().Bytes(), srcData)
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}
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// Tests that at any point in time during a sync, only complete sub-tries are in
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// the database.
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func TestIncompleteSync(t *testing.T) {
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// Create a random trie to copy
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srcDb, srcTrie, _ := makeTestTrie()
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// Create a destination trie and sync with the scheduler
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diskdb := rawdb.NewMemoryDatabase()
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triedb := NewDatabase(diskdb)
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sched := NewSync(srcTrie.Hash(), diskdb, nil, srcDb.Scheme())
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// The code requests are ignored here since there is no code
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// at the testing trie.
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var (
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added []common.Hash
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elements []trieElement
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root = srcTrie.Hash()
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)
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paths, nodes, _ := sched.Missing(1)
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for i := 0; i < len(paths); i++ {
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elements = append(elements, trieElement{
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path: paths[i],
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hash: nodes[i],
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syncPath: NewSyncPath([]byte(paths[i])),
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})
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}
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for len(elements) > 0 {
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// Fetch a batch of trie nodes
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results := make([]NodeSyncResult, len(elements))
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for i, element := range elements {
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data, err := srcDb.Node(element.hash)
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if err != nil {
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t.Fatalf("failed to retrieve node data for %x: %v", element.hash, err)
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}
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results[i] = NodeSyncResult{element.path, data}
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}
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// Process each of the trie nodes
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for _, result := range results {
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if err := sched.ProcessNode(result); err != nil {
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t.Fatalf("failed to process result %v", err)
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}
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}
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batch := diskdb.NewBatch()
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if err := sched.Commit(batch); err != nil {
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t.Fatalf("failed to commit data: %v", err)
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}
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batch.Write()
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for _, result := range results {
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hash := crypto.Keccak256Hash(result.Data)
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|
if hash != root {
|
|
added = append(added, hash)
|
|
}
|
|
// Check that all known sub-tries in the synced trie are complete
|
|
if err := checkTrieConsistency(triedb, hash); err != nil {
|
|
t.Fatalf("trie inconsistent: %v", err)
|
|
}
|
|
}
|
|
// Fetch the next batch to retrieve
|
|
paths, nodes, _ = sched.Missing(1)
|
|
elements = elements[:0]
|
|
for i := 0; i < len(paths); i++ {
|
|
elements = append(elements, trieElement{
|
|
path: paths[i],
|
|
hash: nodes[i],
|
|
syncPath: NewSyncPath([]byte(paths[i])),
|
|
})
|
|
}
|
|
}
|
|
// Sanity check that removing any node from the database is detected
|
|
for _, hash := range added {
|
|
value, _ := diskdb.Get(hash.Bytes())
|
|
diskdb.Delete(hash.Bytes())
|
|
if err := checkTrieConsistency(triedb, root); err == nil {
|
|
t.Fatalf("trie inconsistency not caught, missing: %x", hash)
|
|
}
|
|
diskdb.Put(hash.Bytes(), value)
|
|
}
|
|
}
|
|
|
|
// Tests that trie nodes get scheduled lexicographically when having the same
|
|
// depth.
|
|
func TestSyncOrdering(t *testing.T) {
|
|
// Create a random trie to copy
|
|
srcDb, srcTrie, srcData := makeTestTrie()
|
|
|
|
// Create a destination trie and sync with the scheduler, tracking the requests
|
|
diskdb := rawdb.NewMemoryDatabase()
|
|
triedb := NewDatabase(diskdb)
|
|
sched := NewSync(srcTrie.Hash(), diskdb, nil, srcDb.Scheme())
|
|
|
|
// The code requests are ignored here since there is no code
|
|
// at the testing trie.
|
|
var (
|
|
reqs []SyncPath
|
|
elements []trieElement
|
|
)
|
|
paths, nodes, _ := sched.Missing(1)
|
|
for i := 0; i < len(paths); i++ {
|
|
elements = append(elements, trieElement{
|
|
path: paths[i],
|
|
hash: nodes[i],
|
|
syncPath: NewSyncPath([]byte(paths[i])),
|
|
})
|
|
reqs = append(reqs, NewSyncPath([]byte(paths[i])))
|
|
}
|
|
|
|
for len(elements) > 0 {
|
|
results := make([]NodeSyncResult, len(elements))
|
|
for i, element := range elements {
|
|
data, err := srcDb.Node(element.hash)
|
|
if err != nil {
|
|
t.Fatalf("failed to retrieve node data for %x: %v", element.hash, err)
|
|
}
|
|
results[i] = NodeSyncResult{element.path, data}
|
|
}
|
|
for _, result := range results {
|
|
if err := sched.ProcessNode(result); err != nil {
|
|
t.Fatalf("failed to process result %v", err)
|
|
}
|
|
}
|
|
batch := diskdb.NewBatch()
|
|
if err := sched.Commit(batch); err != nil {
|
|
t.Fatalf("failed to commit data: %v", err)
|
|
}
|
|
batch.Write()
|
|
|
|
paths, nodes, _ = sched.Missing(1)
|
|
elements = elements[:0]
|
|
for i := 0; i < len(paths); i++ {
|
|
elements = append(elements, trieElement{
|
|
path: paths[i],
|
|
hash: nodes[i],
|
|
syncPath: NewSyncPath([]byte(paths[i])),
|
|
})
|
|
reqs = append(reqs, NewSyncPath([]byte(paths[i])))
|
|
}
|
|
}
|
|
// Cross check that the two tries are in sync
|
|
checkTrieContents(t, triedb, srcTrie.Hash().Bytes(), srcData)
|
|
|
|
// Check that the trie nodes have been requested path-ordered
|
|
for i := 0; i < len(reqs)-1; i++ {
|
|
if len(reqs[i]) > 1 || len(reqs[i+1]) > 1 {
|
|
// In the case of the trie tests, there's no storage so the tuples
|
|
// must always be single items. 2-tuples should be tested in state.
|
|
t.Errorf("Invalid request tuples: len(%v) or len(%v) > 1", reqs[i], reqs[i+1])
|
|
}
|
|
if bytes.Compare(compactToHex(reqs[i][0]), compactToHex(reqs[i+1][0])) > 0 {
|
|
t.Errorf("Invalid request order: %v before %v", compactToHex(reqs[i][0]), compactToHex(reqs[i+1][0]))
|
|
}
|
|
}
|
|
}
|