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mutable_tree_test.go
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mutable_tree_test.go
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package iavl
import (
"bytes"
"errors"
"fmt"
"runtime"
"sort"
"strconv"
"testing"
"github.com/cosmos/iavl/internal/encoding"
"github.com/cosmos/iavl/mock"
"github.com/golang/mock/gomock"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
db "github.com/tendermint/tm-db"
)
var (
tKey1 = []byte("k1")
tVal1 = []byte("v1")
tKey2 = []byte("k2")
tVal2 = []byte("v2")
)
func setupMutableTree(t *testing.T) *MutableTree {
memDB := db.NewMemDB()
tree, err := NewMutableTree(memDB, 0, false)
require.NoError(t, err)
return tree
}
func TestDelete(t *testing.T) {
tree := setupMutableTree(t)
tree.set([]byte("k1"), []byte("Fred"))
hash, version, err := tree.SaveVersion()
require.NoError(t, err)
_, _, err = tree.SaveVersion()
require.NoError(t, err)
require.NoError(t, tree.DeleteVersion(version))
k1Value, _, _ := tree.GetVersionedWithProof([]byte("k1"), version)
require.Nil(t, k1Value)
key := tree.ndb.rootKey(version)
err = tree.ndb.db.Set(key, hash)
require.NoError(t, err)
tree.versions[version] = true
k1Value, _, err = tree.GetVersionedWithProof([]byte("k1"), version)
require.Nil(t, err)
require.Equal(t, 0, bytes.Compare([]byte("Fred"), k1Value))
}
func TestGetRemove(t *testing.T) {
require := require.New(t)
tree := setupMutableTree(t)
testGet := func(exists bool) {
v, err := tree.Get(tKey1)
require.NoError(err)
if exists {
require.Equal(tVal1, v, "key should exist")
} else {
require.Nil(v, "key should not exist")
}
}
testGet(false)
ok, err := tree.Set(tKey1, tVal1)
require.NoError(err)
require.False(ok, "new key set: nothing to update")
// add second key to avoid tree.root removal
ok, err = tree.Set(tKey2, tVal2)
require.NoError(err)
require.False(ok, "new key set: nothing to update")
testGet(true)
// Save to tree.ImmutableTree
_, version, err := tree.SaveVersion()
require.NoError(err)
require.Equal(int64(1), version)
testGet(true)
v, ok, err := tree.Remove(tKey1)
require.NoError(err)
require.True(ok, "key should be removed")
require.Equal(tVal1, v, "key should exist")
testGet(false)
}
func TestTraverse(t *testing.T) {
tree := setupMutableTree(t)
for i := 0; i < 6; i++ {
tree.set([]byte(fmt.Sprintf("k%d", i)), []byte(fmt.Sprintf("v%d", i)))
}
require.Equal(t, 11, tree.nodeSize(), "Size of tree unexpected")
}
func TestMutableTree_DeleteVersions(t *testing.T) {
tree := setupMutableTree(t)
type entry struct {
key []byte
value []byte
}
versionEntries := make(map[int64][]entry)
// create 10 tree versions, each with 1000 random key/value entries
for i := 0; i < 10; i++ {
entries := make([]entry, 1000)
for j := 0; j < 1000; j++ {
k := randBytes(10)
v := randBytes(10)
entries[j] = entry{k, v}
_, err := tree.Set(k, v)
require.NoError(t, err)
}
_, v, err := tree.SaveVersion()
require.NoError(t, err)
versionEntries[v] = entries
}
// delete even versions
versionsToDelete := []int64{2, 4, 6, 8}
require.NoError(t, tree.DeleteVersions(versionsToDelete...))
// ensure even versions have been deleted
for _, v := range versionsToDelete {
require.False(t, tree.versions[v])
_, err := tree.LazyLoadVersion(v)
require.Error(t, err)
}
// ensure odd number versions exist and we can query for all set entries
for _, v := range []int64{1, 3, 5, 7, 9, 10} {
require.True(t, tree.versions[v])
_, err := tree.LazyLoadVersion(v)
require.NoError(t, err)
for _, e := range versionEntries[v] {
val, err := tree.Get(e.key)
require.NoError(t, err)
require.Equal(t, e.value, val)
}
}
}
func TestMutableTree_LoadVersion_Empty(t *testing.T) {
tree := setupMutableTree(t)
version, err := tree.LoadVersion(0)
require.NoError(t, err)
assert.EqualValues(t, 0, version)
version, err = tree.LoadVersion(-1)
require.NoError(t, err)
assert.EqualValues(t, 0, version)
_, err = tree.LoadVersion(3)
require.Error(t, err)
}
func TestMutableTree_LazyLoadVersion_Empty(t *testing.T) {
memDB := db.NewMemDB()
tree, err := NewMutableTree(memDB, 0, false)
require.NoError(t, err)
version, err := tree.LazyLoadVersion(0)
require.NoError(t, err)
assert.EqualValues(t, 0, version)
version, err = tree.LazyLoadVersion(-1)
require.NoError(t, err)
assert.EqualValues(t, 0, version)
_, err = tree.LazyLoadVersion(3)
require.Error(t, err)
}
func TestMutableTree_DeleteVersionsRange(t *testing.T) {
require := require.New(t)
mdb := db.NewMemDB()
tree, err := NewMutableTree(mdb, 0, false)
require.NoError(err)
const maxLength = 100
const fromLength = 10
versions := make([]int64, 0, maxLength)
for count := 1; count <= maxLength; count++ {
versions = append(versions, int64(count))
countStr := strconv.Itoa(count)
// Set kv pair and save version
tree.Set([]byte("aaa"), []byte("bbb"))
tree.Set([]byte("key"+countStr), []byte("value"+countStr))
_, _, err = tree.SaveVersion()
require.NoError(err, "SaveVersion should not fail")
}
tree, err = NewMutableTree(mdb, 0, false)
require.NoError(err)
targetVersion, err := tree.LoadVersion(int64(maxLength))
require.NoError(err)
require.Equal(targetVersion, int64(maxLength), "targetVersion shouldn't larger than the actual tree latest version")
err = tree.DeleteVersionsRange(fromLength, int64(maxLength/2))
require.NoError(err, "DeleteVersionsTo should not fail")
for _, version := range versions[:fromLength-1] {
require.True(tree.versions[version], "versions %d no more than 10 should exist", version)
v, err := tree.LazyLoadVersion(version)
require.NoError(err, version)
require.Equal(v, version)
value, err := tree.Get([]byte("aaa"))
require.NoError(err)
require.Equal(string(value), "bbb")
for _, count := range versions[:version] {
countStr := strconv.Itoa(int(count))
value, err := tree.Get([]byte("key" + countStr))
require.NoError(err)
require.Equal(string(value), "value"+countStr)
}
}
for _, version := range versions[fromLength : int64(maxLength/2)-1] {
require.False(tree.versions[version], "versions %d more 10 and no more than 50 should have been deleted", version)
_, err := tree.LazyLoadVersion(version)
require.Error(err)
}
for _, version := range versions[int64(maxLength/2)-1:] {
require.True(tree.versions[version], "versions %d more than 50 should exist", version)
v, err := tree.LazyLoadVersion(version)
require.NoError(err)
require.Equal(v, version)
value, err := tree.Get([]byte("aaa"))
require.NoError(err)
require.Equal(string(value), "bbb")
for _, count := range versions[:fromLength] {
countStr := strconv.Itoa(int(count))
value, err := tree.Get([]byte("key" + countStr))
require.NoError(err)
require.Equal(string(value), "value"+countStr)
}
for _, count := range versions[int64(maxLength/2)-1 : version] {
countStr := strconv.Itoa(int(count))
value, err := tree.Get([]byte("key" + countStr))
require.NoError(err)
require.Equal(string(value), "value"+countStr)
}
}
}
func TestMutableTree_InitialVersion(t *testing.T) {
memDB := db.NewMemDB()
tree, err := NewMutableTreeWithOpts(memDB, 0, &Options{InitialVersion: 9}, false)
require.NoError(t, err)
tree.Set([]byte("a"), []byte{0x01})
_, version, err := tree.SaveVersion()
require.NoError(t, err)
assert.EqualValues(t, 9, version)
tree.Set([]byte("b"), []byte{0x02})
_, version, err = tree.SaveVersion()
require.NoError(t, err)
assert.EqualValues(t, 10, version)
// Reloading the tree with the same initial version is fine
tree, err = NewMutableTreeWithOpts(memDB, 0, &Options{InitialVersion: 9}, false)
require.NoError(t, err)
version, err = tree.Load()
require.NoError(t, err)
assert.EqualValues(t, 10, version)
// Check `LazyLoadVersion` behaviors the same as `LoadVersion`
version, err = tree.LazyLoadVersion(0)
require.NoError(t, err)
assert.EqualValues(t, 10, version)
// Reloading the tree with an initial version beyond the lowest should error
tree, err = NewMutableTreeWithOpts(memDB, 0, &Options{InitialVersion: 10}, false)
require.NoError(t, err)
_, err = tree.Load()
require.Error(t, err)
_, err = tree.LazyLoadVersion(0)
require.Error(t, err)
// Reloading the tree with a lower initial version is fine, and new versions can be produced
tree, err = NewMutableTreeWithOpts(memDB, 0, &Options{InitialVersion: 3}, false)
require.NoError(t, err)
version, err = tree.Load()
require.NoError(t, err)
assert.EqualValues(t, 10, version)
version, err = tree.LazyLoadVersion(0)
require.NoError(t, err)
assert.EqualValues(t, 10, version)
_, err = tree.Set([]byte("c"), []byte{0x03})
require.NoError(t, err)
_, version, err = tree.SaveVersion()
require.NoError(t, err)
assert.EqualValues(t, 11, version)
}
func TestMutableTree_SetInitialVersion(t *testing.T) {
tree := setupMutableTree(t)
tree.SetInitialVersion(9)
tree.Set([]byte("a"), []byte{0x01})
_, version, err := tree.SaveVersion()
require.NoError(t, err)
assert.EqualValues(t, 9, version)
}
func BenchmarkMutableTree_Set(b *testing.B) {
db, err := db.NewDB("test", db.MemDBBackend, "")
require.NoError(b, err)
t, err := NewMutableTree(db, 100000, false)
require.NoError(b, err)
for i := 0; i < 1000000; i++ {
t.Set(randBytes(10), []byte{})
}
b.ReportAllocs()
runtime.GC()
b.ResetTimer()
for i := 0; i < b.N; i++ {
t.Set(randBytes(10), []byte{})
}
}
func prepareTree(t *testing.T) *MutableTree {
mdb := db.NewMemDB()
tree, err := NewMutableTree(mdb, 1000, false)
require.NoError(t, err)
for i := 0; i < 100; i++ {
tree.Set([]byte{byte(i)}, []byte("a"))
}
_, ver, err := tree.SaveVersion()
require.True(t, ver == 1)
require.NoError(t, err)
for i := 0; i < 100; i++ {
tree.Set([]byte{byte(i)}, []byte("b"))
}
_, ver, err = tree.SaveVersion()
require.True(t, ver == 2)
require.NoError(t, err)
newTree, err := NewMutableTree(mdb, 1000, false)
require.NoError(t, err)
return newTree
}
func TestMutableTree_VersionExists(t *testing.T) {
tree := prepareTree(t)
require.True(t, tree.VersionExists(1))
require.True(t, tree.VersionExists(2))
require.False(t, tree.VersionExists(3))
}
func checkGetVersioned(t *testing.T, tree *MutableTree, version int64, key, value []byte) {
val, err := tree.GetVersioned(key, version)
require.NoError(t, err)
require.True(t, bytes.Equal(val, value))
}
func TestMutableTree_GetVersioned(t *testing.T) {
tree := prepareTree(t)
ver, err := tree.LazyLoadVersion(1)
require.True(t, ver == 1)
require.NoError(t, err)
// check key of unloaded version
checkGetVersioned(t, tree, 1, []byte{1}, []byte("a"))
checkGetVersioned(t, tree, 2, []byte{1}, []byte("b"))
checkGetVersioned(t, tree, 3, []byte{1}, nil)
tree = prepareTree(t)
ver, err = tree.LazyLoadVersion(2)
require.True(t, ver == 2)
require.NoError(t, err)
checkGetVersioned(t, tree, 1, []byte{1}, []byte("a"))
checkGetVersioned(t, tree, 2, []byte{1}, []byte("b"))
checkGetVersioned(t, tree, 3, []byte{1}, nil)
}
func TestMutableTree_DeleteVersion(t *testing.T) {
tree := prepareTree(t)
ver, err := tree.LazyLoadVersion(2)
require.True(t, ver == 2)
require.NoError(t, err)
require.NoError(t, tree.DeleteVersion(1))
require.False(t, tree.VersionExists(1))
require.True(t, tree.VersionExists(2))
require.False(t, tree.VersionExists(3))
// cannot delete latest version
require.Error(t, tree.DeleteVersion(2))
}
func TestMutableTree_LazyLoadVersionWithEmptyTree(t *testing.T) {
mdb := db.NewMemDB()
tree, err := NewMutableTree(mdb, 1000, false)
require.NoError(t, err)
_, v1, err := tree.SaveVersion()
require.NoError(t, err)
newTree1, err := NewMutableTree(mdb, 1000, false)
require.NoError(t, err)
v2, err := newTree1.LazyLoadVersion(1)
require.NoError(t, err)
require.True(t, v1 == v2)
newTree2, err := NewMutableTree(mdb, 1000, false)
require.NoError(t, err)
v2, err = newTree1.LoadVersion(1)
require.NoError(t, err)
require.True(t, v1 == v2)
require.True(t, newTree1.root == newTree2.root)
}
func TestMutableTree_SetSimple(t *testing.T) {
mdb := db.NewMemDB()
tree, err := NewMutableTree(mdb, 0, false)
require.NoError(t, err)
const testKey1 = "a"
const testVal1 = "test"
isUpdated, err := tree.Set([]byte(testKey1), []byte(testVal1))
require.NoError(t, err)
require.False(t, isUpdated)
fastValue, err := tree.Get([]byte(testKey1))
require.NoError(t, err)
_, regularValue, err := tree.GetWithIndex([]byte(testKey1))
require.NoError(t, err)
require.Equal(t, []byte(testVal1), fastValue)
require.Equal(t, []byte(testVal1), regularValue)
fastNodeAdditions := tree.getUnsavedFastNodeAdditions()
require.Equal(t, 1, len(fastNodeAdditions))
fastNodeAddition := fastNodeAdditions[testKey1]
require.Equal(t, []byte(testKey1), fastNodeAddition.key)
require.Equal(t, []byte(testVal1), fastNodeAddition.value)
require.Equal(t, int64(1), fastNodeAddition.versionLastUpdatedAt)
}
func TestMutableTree_SetTwoKeys(t *testing.T) {
tree := setupMutableTree(t)
const testKey1 = "a"
const testVal1 = "test"
const testKey2 = "b"
const testVal2 = "test2"
isUpdated, err := tree.Set([]byte(testKey1), []byte(testVal1))
require.NoError(t, err)
require.False(t, isUpdated)
isUpdated, err = tree.Set([]byte(testKey2), []byte(testVal2))
require.NoError(t, err)
require.False(t, isUpdated)
fastValue, err := tree.Get([]byte(testKey1))
require.NoError(t, err)
_, regularValue, err := tree.GetWithIndex([]byte(testKey1))
require.NoError(t, err)
require.Equal(t, []byte(testVal1), fastValue)
require.Equal(t, []byte(testVal1), regularValue)
fastValue2, err := tree.Get([]byte(testKey2))
require.NoError(t, err)
_, regularValue2, err := tree.GetWithIndex([]byte(testKey2))
require.NoError(t, err)
require.Equal(t, []byte(testVal2), fastValue2)
require.Equal(t, []byte(testVal2), regularValue2)
fastNodeAdditions := tree.getUnsavedFastNodeAdditions()
require.Equal(t, 2, len(fastNodeAdditions))
fastNodeAddition := fastNodeAdditions[testKey1]
require.Equal(t, []byte(testKey1), fastNodeAddition.key)
require.Equal(t, []byte(testVal1), fastNodeAddition.value)
require.Equal(t, int64(1), fastNodeAddition.versionLastUpdatedAt)
fastNodeAddition = fastNodeAdditions[testKey2]
require.Equal(t, []byte(testKey2), fastNodeAddition.key)
require.Equal(t, []byte(testVal2), fastNodeAddition.value)
require.Equal(t, int64(1), fastNodeAddition.versionLastUpdatedAt)
}
func TestMutableTree_SetOverwrite(t *testing.T) {
tree := setupMutableTree(t)
const testKey1 = "a"
const testVal1 = "test"
const testVal2 = "test2"
isUpdated, err := tree.Set([]byte(testKey1), []byte(testVal1))
require.NoError(t, err)
require.False(t, isUpdated)
isUpdated, err = tree.Set([]byte(testKey1), []byte(testVal2))
require.NoError(t, err)
require.True(t, isUpdated)
fastValue, err := tree.Get([]byte(testKey1))
require.NoError(t, err)
_, regularValue, err := tree.GetWithIndex([]byte(testKey1))
require.NoError(t, err)
require.Equal(t, []byte(testVal2), fastValue)
require.Equal(t, []byte(testVal2), regularValue)
fastNodeAdditions := tree.getUnsavedFastNodeAdditions()
require.Equal(t, 1, len(fastNodeAdditions))
fastNodeAddition := fastNodeAdditions[testKey1]
require.Equal(t, []byte(testKey1), fastNodeAddition.key)
require.Equal(t, []byte(testVal2), fastNodeAddition.value)
require.Equal(t, int64(1), fastNodeAddition.versionLastUpdatedAt)
}
func TestMutableTree_SetRemoveSet(t *testing.T) {
tree := setupMutableTree(t)
const testKey1 = "a"
const testVal1 = "test"
// Set 1
isUpdated, err := tree.Set([]byte(testKey1), []byte(testVal1))
require.NoError(t, err)
require.False(t, isUpdated)
fastValue, err := tree.Get([]byte(testKey1))
require.NoError(t, err)
_, regularValue, err := tree.GetWithIndex([]byte(testKey1))
require.Equal(t, []byte(testVal1), fastValue)
require.Equal(t, []byte(testVal1), regularValue)
fastNodeAdditions := tree.getUnsavedFastNodeAdditions()
require.Equal(t, 1, len(fastNodeAdditions))
fastNodeAddition := fastNodeAdditions[testKey1]
require.Equal(t, []byte(testKey1), fastNodeAddition.key)
require.Equal(t, []byte(testVal1), fastNodeAddition.value)
require.Equal(t, int64(1), fastNodeAddition.versionLastUpdatedAt)
// Remove
removedVal, isRemoved, err := tree.Remove([]byte(testKey1))
require.NoError(t, err)
require.NotNil(t, removedVal)
require.True(t, isRemoved)
fastNodeAdditions = tree.getUnsavedFastNodeAdditions()
require.Equal(t, 0, len(fastNodeAdditions))
fastNodeRemovals := tree.getUnsavedFastNodeRemovals()
require.Equal(t, 1, len(fastNodeRemovals))
fastValue, err = tree.Get([]byte(testKey1))
require.NoError(t, err)
_, regularValue, err = tree.GetWithIndex([]byte(testKey1))
require.NoError(t, err)
require.Nil(t, fastValue)
require.Nil(t, regularValue)
// Set 2
isUpdated, err = tree.Set([]byte(testKey1), []byte(testVal1))
require.NoError(t, err)
require.False(t, isUpdated)
fastValue, err = tree.Get([]byte(testKey1))
require.NoError(t, err)
_, regularValue, err = tree.GetWithIndex([]byte(testKey1))
require.NoError(t, err)
require.Equal(t, []byte(testVal1), fastValue)
require.Equal(t, []byte(testVal1), regularValue)
fastNodeAdditions = tree.getUnsavedFastNodeAdditions()
require.Equal(t, 1, len(fastNodeAdditions))
fastNodeAddition = fastNodeAdditions[testKey1]
require.Equal(t, []byte(testKey1), fastNodeAddition.key)
require.Equal(t, []byte(testVal1), fastNodeAddition.value)
require.Equal(t, int64(1), fastNodeAddition.versionLastUpdatedAt)
fastNodeRemovals = tree.getUnsavedFastNodeRemovals()
require.Equal(t, 0, len(fastNodeRemovals))
}
func TestMutableTree_FastNodeIntegration(t *testing.T) {
mdb := db.NewMemDB()
tree, err := NewMutableTree(mdb, 1000, false)
require.NoError(t, err)
const key1 = "a"
const key2 = "b"
const key3 = "c"
const testVal1 = "test"
const testVal2 = "test2"
// Set key1
res, err := tree.Set([]byte(key1), []byte(testVal1))
require.NoError(t, err)
require.False(t, res)
unsavedNodeAdditions := tree.getUnsavedFastNodeAdditions()
require.Equal(t, len(unsavedNodeAdditions), 1)
// Set key2
res, err = tree.Set([]byte(key2), []byte(testVal1))
require.NoError(t, err)
require.False(t, res)
unsavedNodeAdditions = tree.getUnsavedFastNodeAdditions()
require.Equal(t, len(unsavedNodeAdditions), 2)
// Set key3
res, err = tree.Set([]byte(key3), []byte(testVal1))
require.NoError(t, err)
require.False(t, res)
unsavedNodeAdditions = tree.getUnsavedFastNodeAdditions()
require.Equal(t, len(unsavedNodeAdditions), 3)
// Set key3 with new value
res, err = tree.Set([]byte(key3), []byte(testVal2))
require.NoError(t, err)
require.True(t, res)
unsavedNodeAdditions = tree.getUnsavedFastNodeAdditions()
require.Equal(t, len(unsavedNodeAdditions), 3)
// Remove key2
removedVal, isRemoved, err := tree.Remove([]byte(key2))
require.NoError(t, err)
require.True(t, isRemoved)
require.Equal(t, []byte(testVal1), removedVal)
unsavedNodeAdditions = tree.getUnsavedFastNodeAdditions()
require.Equal(t, len(unsavedNodeAdditions), 2)
unsavedNodeRemovals := tree.getUnsavedFastNodeRemovals()
require.Equal(t, len(unsavedNodeRemovals), 1)
// Save
_, _, err = tree.SaveVersion()
require.NoError(t, err)
unsavedNodeAdditions = tree.getUnsavedFastNodeAdditions()
require.Equal(t, len(unsavedNodeAdditions), 0)
unsavedNodeRemovals = tree.getUnsavedFastNodeRemovals()
require.Equal(t, len(unsavedNodeRemovals), 0)
// Load
t2, err := NewMutableTree(mdb, 0, false)
require.NoError(t, err)
_, err = t2.Load()
require.NoError(t, err)
// Get and GetFast
fastValue, err := t2.Get([]byte(key1))
require.NoError(t, err)
_, regularValue, err := tree.GetWithIndex([]byte(key1))
require.NoError(t, err)
require.Equal(t, []byte(testVal1), fastValue)
require.Equal(t, []byte(testVal1), regularValue)
fastValue, err = t2.Get([]byte(key2))
require.NoError(t, err)
_, regularValue, err = t2.GetWithIndex([]byte(key2))
require.NoError(t, err)
require.Nil(t, fastValue)
require.Nil(t, regularValue)
fastValue, err = t2.Get([]byte(key3))
require.NoError(t, err)
_, regularValue, err = tree.GetWithIndex([]byte(key3))
require.NoError(t, err)
require.Equal(t, []byte(testVal2), fastValue)
require.Equal(t, []byte(testVal2), regularValue)
}
func TestIterate_MutableTree_Unsaved(t *testing.T) {
tree, mirror := getRandomizedTreeAndMirror(t)
assertMutableMirrorIterate(t, tree, mirror)
}
func TestIterate_MutableTree_Saved(t *testing.T) {
tree, mirror := getRandomizedTreeAndMirror(t)
_, _, err := tree.SaveVersion()
require.NoError(t, err)
assertMutableMirrorIterate(t, tree, mirror)
}
func TestIterate_MutableTree_Unsaved_NextVersion(t *testing.T) {
tree, mirror := getRandomizedTreeAndMirror(t)
_, _, err := tree.SaveVersion()
require.NoError(t, err)
assertMutableMirrorIterate(t, tree, mirror)
randomizeTreeAndMirror(t, tree, mirror)
assertMutableMirrorIterate(t, tree, mirror)
}
func TestIterator_MutableTree_Invalid(t *testing.T) {
tree, err := getTestTree(0)
require.NoError(t, err)
itr, err := tree.Iterator([]byte("a"), []byte("b"), true)
require.NoError(t, err)
require.NotNil(t, itr)
require.False(t, itr.Valid())
}
func TestUpgradeStorageToFast_LatestVersion_Success(t *testing.T) {
// Setup
db := db.NewMemDB()
tree, err := NewMutableTree(db, 1000, false)
require.NoError(t, err)
// Default version when storage key does not exist in the db
isFastCacheEnabled, err := tree.IsFastCacheEnabled()
require.NoError(t, err)
require.False(t, isFastCacheEnabled)
mirror := make(map[string]string)
// Fill with some data
randomizeTreeAndMirror(t, tree, mirror)
// Enable fast storage
isUpgradeable, err := tree.IsUpgradeable()
require.True(t, isUpgradeable)
require.NoError(t, err)
enabled, err := tree.enableFastStorageAndCommitIfNotEnabled()
require.NoError(t, err)
require.True(t, enabled)
isUpgradeable, err = tree.IsUpgradeable()
require.False(t, isUpgradeable)
require.NoError(t, err)
isFastCacheEnabled, err = tree.IsFastCacheEnabled()
require.NoError(t, err)
require.True(t, isFastCacheEnabled)
}
func TestUpgradeStorageToFast_AlreadyUpgraded_Success(t *testing.T) {
// Setup
db := db.NewMemDB()
tree, err := NewMutableTree(db, 1000, false)
require.NoError(t, err)
// Default version when storage key does not exist in the db
isFastCacheEnabled, err := tree.IsFastCacheEnabled()
require.NoError(t, err)
require.False(t, isFastCacheEnabled)
mirror := make(map[string]string)
// Fill with some data
randomizeTreeAndMirror(t, tree, mirror)
// Enable fast storage
isUpgradeable, err := tree.IsUpgradeable()
require.True(t, isUpgradeable)
require.NoError(t, err)
enabled, err := tree.enableFastStorageAndCommitIfNotEnabled()
require.NoError(t, err)
require.True(t, enabled)
isFastCacheEnabled, err = tree.IsFastCacheEnabled()
require.NoError(t, err)
require.True(t, isFastCacheEnabled)
isUpgradeable, err = tree.IsUpgradeable()
require.False(t, isUpgradeable)
require.NoError(t, err)
// Test enabling fast storage when already enabled
enabled, err = tree.enableFastStorageAndCommitIfNotEnabled()
require.NoError(t, err)
require.False(t, enabled)
isFastCacheEnabled, err = tree.IsFastCacheEnabled()
require.NoError(t, err)
require.True(t, isFastCacheEnabled)
}
func TestUpgradeStorageToFast_DbErrorConstructor_Failure(t *testing.T) {
ctrl := gomock.NewController(t)
dbMock := mock.NewMockDB(ctrl)
rIterMock := mock.NewMockIterator(ctrl)
// rIterMock is used to get the latest version from disk. We are mocking that rIterMock returns latestTreeVersion from disk
rIterMock.EXPECT().Valid().Return(true).Times(1)
rIterMock.EXPECT().Key().Return(rootKeyFormat.Key([]byte(defaultStorageVersionValue)))
rIterMock.EXPECT().Close().Return(nil).Times(1)
expectedError := errors.New("some db error")
dbMock.EXPECT().Get(gomock.Any()).Return(nil, expectedError).Times(1)
dbMock.EXPECT().NewBatch().Return(nil).Times(1)
dbMock.EXPECT().ReverseIterator(gomock.Any(), gomock.Any()).Return(rIterMock, nil).Times(1)
tree, err := NewMutableTree(dbMock, 0, false)
require.Nil(t, err)
require.NotNil(t, tree)
isFastCacheEnabled, err := tree.IsFastCacheEnabled()
require.NoError(t, err)
require.False(t, isFastCacheEnabled)
}
func TestUpgradeStorageToFast_DbErrorEnableFastStorage_Failure(t *testing.T) {
ctrl := gomock.NewController(t)
dbMock := mock.NewMockDB(ctrl)
rIterMock := mock.NewMockIterator(ctrl)
// rIterMock is used to get the latest version from disk. We are mocking that rIterMock returns latestTreeVersion from disk
rIterMock.EXPECT().Valid().Return(true).Times(1)
rIterMock.EXPECT().Key().Return(rootKeyFormat.Key([]byte(defaultStorageVersionValue)))
rIterMock.EXPECT().Close().Return(nil).Times(1)
expectedError := errors.New("some db error")
batchMock := mock.NewMockBatch(ctrl)
dbMock.EXPECT().Get(gomock.Any()).Return(nil, nil).Times(1)
dbMock.EXPECT().NewBatch().Return(batchMock).Times(1)
dbMock.EXPECT().ReverseIterator(gomock.Any(), gomock.Any()).Return(rIterMock, nil).Times(1)
iterMock := mock.NewMockIterator(ctrl)
dbMock.EXPECT().Iterator(gomock.Any(), gomock.Any()).Return(iterMock, nil)
iterMock.EXPECT().Error()
iterMock.EXPECT().Valid().Times(2)
iterMock.EXPECT().Close()
batchMock.EXPECT().Set(gomock.Any(), gomock.Any()).Return(expectedError).Times(1)
tree, err := NewMutableTree(dbMock, 0, false)
require.Nil(t, err)
require.NotNil(t, tree)
isFastCacheEnabled, err := tree.IsFastCacheEnabled()
require.NoError(t, err)
require.False(t, isFastCacheEnabled)
enabled, err := tree.enableFastStorageAndCommitIfNotEnabled()
require.ErrorIs(t, err, expectedError)
require.False(t, enabled)
isFastCacheEnabled, err = tree.IsFastCacheEnabled()
require.NoError(t, err)
require.False(t, isFastCacheEnabled)
}
func TestFastStorageReUpgradeProtection_NoForceUpgrade_Success(t *testing.T) {
ctrl := gomock.NewController(t)
dbMock := mock.NewMockDB(ctrl)
rIterMock := mock.NewMockIterator(ctrl)
// We are trying to test downgrade and re-upgrade protection
// We need to set up a state where latest fast storage version is equal to latest tree version
const latestFastStorageVersionOnDisk = 1
const latestTreeVersion = latestFastStorageVersionOnDisk
// Setup fake reverse iterator db to traverse root versions, called by ndb's getLatestVersion
expectedStorageVersion := []byte(fastStorageVersionValue + fastStorageVersionDelimiter + strconv.Itoa(latestFastStorageVersionOnDisk))
// rIterMock is used to get the latest version from disk. We are mocking that rIterMock returns latestTreeVersion from disk
rIterMock.EXPECT().Valid().Return(true).Times(1)
rIterMock.EXPECT().Key().Return(rootKeyFormat.Key(latestTreeVersion))
rIterMock.EXPECT().Close().Return(nil).Times(1)
batchMock := mock.NewMockBatch(ctrl)
dbMock.EXPECT().Get(gomock.Any()).Return(expectedStorageVersion, nil).Times(1)
dbMock.EXPECT().NewBatch().Return(batchMock).Times(1)
dbMock.EXPECT().ReverseIterator(gomock.Any(), gomock.Any()).Return(rIterMock, nil).Times(1) // called to get latest version
tree, err := NewMutableTree(dbMock, 0, false)
require.Nil(t, err)
require.NotNil(t, tree)
// Pretend that we called Load and have the latest state in the tree
tree.version = latestTreeVersion
latestVersion, err := tree.ndb.getLatestVersion()
require.NoError(t, err)
require.Equal(t, latestVersion, int64(latestTreeVersion))
// Ensure that the right branch of enableFastStorageAndCommitIfNotEnabled will be triggered
isFastCacheEnabled, err := tree.IsFastCacheEnabled()
require.NoError(t, err)
require.True(t, isFastCacheEnabled)
shouldForce, err := tree.ndb.shouldForceFastStorageUpgrade()
require.False(t, shouldForce)
require.NoError(t, err)
enabled, err := tree.enableFastStorageAndCommitIfNotEnabled()
require.NoError(t, err)
require.False(t, enabled)
}
func TestFastStorageReUpgradeProtection_ForceUpgradeFirstTime_NoForceSecondTime_Success(t *testing.T) {
ctrl := gomock.NewController(t)
dbMock := mock.NewMockDB(ctrl)
batchMock := mock.NewMockBatch(ctrl)
iterMock := mock.NewMockIterator(ctrl)
rIterMock := mock.NewMockIterator(ctrl)
// We are trying to test downgrade and re-upgrade protection
// We need to set up a state where latest fast storage version is of a lower version
// than tree version
const latestFastStorageVersionOnDisk = 1
const latestTreeVersion = latestFastStorageVersionOnDisk + 1
// Setup db for iterator and reverse iterator mocks
expectedStorageVersion := []byte(fastStorageVersionValue + fastStorageVersionDelimiter + strconv.Itoa(latestFastStorageVersionOnDisk))
// Setup fake reverse iterator db to traverse root versions, called by ndb's getLatestVersion
// rItr, err := db.ReverseIterator(rootKeyFormat.Key(1), rootKeyFormat.Key(latestTreeVersion + 1))
// require.NoError(t, err)
// dbMock represents the underlying database under the hood of nodeDB
dbMock.EXPECT().Get(gomock.Any()).Return(expectedStorageVersion, nil).Times(1)
dbMock.EXPECT().NewBatch().Return(batchMock).Times(3)
dbMock.EXPECT().ReverseIterator(gomock.Any(), gomock.Any()).Return(rIterMock, nil).Times(1) // called to get latest version
startFormat := fastKeyFormat.Key()
endFormat := fastKeyFormat.Key()
endFormat[0]++
dbMock.EXPECT().Iterator(startFormat, endFormat).Return(iterMock, nil).Times(1)
// rIterMock is used to get the latest version from disk. We are mocking that rIterMock returns latestTreeVersion from disk
rIterMock.EXPECT().Valid().Return(true).Times(1)
rIterMock.EXPECT().Key().Return(rootKeyFormat.Key(latestTreeVersion))
rIterMock.EXPECT().Close().Return(nil).Times(1)
fastNodeKeyToDelete := []byte("some_key")
// batchMock represents a structure that receives all the updates related to
// upgrade and then commits them all in the end.
updatedExpectedStorageVersion := make([]byte, len(expectedStorageVersion))
copy(updatedExpectedStorageVersion, expectedStorageVersion)
updatedExpectedStorageVersion[len(updatedExpectedStorageVersion)-1]++
batchMock.EXPECT().Delete(fastKeyFormat.Key(fastNodeKeyToDelete)).Return(nil).Times(1)
batchMock.EXPECT().Set(metadataKeyFormat.Key([]byte(storageVersionKey)), updatedExpectedStorageVersion).Return(nil).Times(1)
batchMock.EXPECT().Write().Return(nil).Times(2)
batchMock.EXPECT().Close().Return(nil).Times(2)
// iterMock is used to mock the underlying db iterator behing fast iterator
// Here, we want to mock the behavior of deleting fast nodes from disk when
// force upgrade is detected.
iterMock.EXPECT().Valid().Return(true).Times(1)
iterMock.EXPECT().Error().Return(nil).Times(1)
iterMock.EXPECT().Key().Return(fastKeyFormat.Key(fastNodeKeyToDelete)).Times(1)
// encode value
var buf bytes.Buffer
testValue := "test_value"
buf.Grow(encoding.EncodeVarintSize(int64(latestFastStorageVersionOnDisk)) + encoding.EncodeBytesSize([]byte(testValue)))
err := encoding.EncodeVarint(&buf, int64(latestFastStorageVersionOnDisk))
require.NoError(t, err)