mirror of
https://github.com/anyproto/any-sync.git
synced 2025-06-09 09:35:03 +09:00
Load iterator and tree builder changes, remove raw loader
This commit is contained in:
parent
eca8e37707
commit
6052649d7b
5 changed files with 72 additions and 361 deletions
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@ -10,6 +10,13 @@ import (
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"github.com/anyproto/any-sync/util/slice"
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)
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type rawCacheEntry struct {
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change *Change
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removed bool
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nextSet bool
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size int
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}
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type LoadIterator interface {
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NextBatch(maxSize int) (batch IteratorBatch, err error)
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}
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@ -24,30 +31,28 @@ type IteratorBatch struct {
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type loadIterator struct {
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storage Storage
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builder ChangeBuilder
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loader *rawChangeLoader
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cache map[string]rawCacheEntry
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idStack []string
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heads []string
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lastHeads []string
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snapshotPath []string
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orderId string
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root *Change
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lastChange *Change
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iter *iterator
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root *treechangeproto.RawTreeChangeWithId
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isExhausted bool
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}
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func newLoadIterator(loader *rawChangeLoader, snapshotPath []string) *loadIterator {
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func newLoadIterator(root *treechangeproto.RawTreeChangeWithId, snapshotPath []string, storage Storage, builder ChangeBuilder) *loadIterator {
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return &loadIterator{
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loader: loader,
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storage: storage,
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builder: builder,
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cache: make(map[string]rawCacheEntry),
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snapshotPath: snapshotPath,
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root: root,
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}
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}
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func (l *loadIterator) NextBatch(maxSize int) (batch IteratorBatch, err error) {
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batch.Root = l.loader.Root()
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batch.Heads = l.lastHeads
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batch.Root = l.root
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batch.SnapshotPath = l.snapshotPath
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var curSize int
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if l.isExhausted {
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@ -178,9 +183,7 @@ func (l *loadIterator) load(commonSnapshot string, heads, breakpoints []string)
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if err != nil {
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return
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}
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l.root = l.cache[commonSnapshot].change
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l.orderId = l.root.OrderId
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l.lastHeads = []string{l.root.Id}
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l.lastChange = l.root
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l.orderId = cs.OrderId
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l.lastHeads = []string{cs.Id}
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return nil
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}
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@ -133,8 +133,13 @@ type objectTree struct {
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}
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func (ot *objectTree) rebuildFromStorage(theirHeads, theirSnapshotPath []string, newChanges []*Change) (err error) {
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oldTree := ot.tree
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ourPath := ot.SnapshotPath()
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var (
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ourPath []string
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oldTree = ot.tree
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)
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if ot.tree != nil {
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ourPath = ot.SnapshotPath()
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}
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ot.tree, err = ot.treeBuilder.Build(treeBuilderOpts{
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full: false,
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theirHeads: theirHeads,
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@ -777,7 +782,7 @@ func (ot *objectTree) ChangesAfterCommonSnapshotLoader(theirPath, theirHeads []s
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}
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}
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iter := newLoadIterator(ot.rawChangeLoader, ourPath)
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iter := newLoadIterator(ot.rawRoot, ourPath, ot.storage, ot.changeBuilder)
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err = iter.load(commonSnapshot, ot.tree.headIds, theirHeads)
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if err != nil {
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return nil, err
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@ -50,16 +50,14 @@ func verifiableTreeDeps(
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treeStorage treestorage.TreeStorage,
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aclList list.AclList) objectTreeDeps {
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changeBuilder := NewChangeBuilder(crypto.NewKeyStorage(), rootChange)
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rawLoader := newRawChangeLoader(treeStorage, changeBuilder)
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treeBuilder := newTreeBuilder(true, treeStorage, changeBuilder, rawLoader)
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return objectTreeDeps{
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changeBuilder: changeBuilder,
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treeBuilder: treeBuilder,
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treeStorage: treeStorage,
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validator: newTreeValidator(false, false),
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rawChangeLoader: rawLoader,
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aclList: aclList,
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flusher: &defaultFlusher{},
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changeBuilder: changeBuilder,
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treeBuilder: treeBuilder,
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treeStorage: treeStorage,
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validator: newTreeValidator(false, false),
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aclList: aclList,
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flusher: &defaultFlusher{},
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}
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}
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@ -70,16 +68,14 @@ func verifiableEmptyDataTreeDeps(
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treeStorage treestorage.TreeStorage,
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aclList list.AclList) objectTreeDeps {
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changeBuilder := NewEmptyDataChangeBuilder(crypto.NewKeyStorage(), rootChange)
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loader := newStorageLoader(treeStorage, changeBuilder)
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treeBuilder := newTreeBuilder(false, treeStorage, changeBuilder, loader)
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return objectTreeDeps{
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changeBuilder: changeBuilder,
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treeBuilder: treeBuilder,
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treeStorage: treeStorage,
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validator: newTreeValidator(false, false),
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rawChangeLoader: loader,
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aclList: aclList,
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flusher: &defaultFlusher{},
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changeBuilder: changeBuilder,
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treeBuilder: treeBuilder,
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treeStorage: treeStorage,
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validator: newTreeValidator(false, false),
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aclList: aclList,
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flusher: &defaultFlusher{},
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}
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}
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@ -88,16 +84,14 @@ func nonVerifiableTreeDeps(
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treeStorage treestorage.TreeStorage,
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aclList list.AclList) objectTreeDeps {
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changeBuilder := &nonVerifiableChangeBuilder{NewChangeBuilder(newMockKeyStorage(), rootChange)}
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loader := newRawChangeLoader(treeStorage, changeBuilder)
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treeBuilder := newTreeBuilder(true, treeStorage, changeBuilder, loader)
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return objectTreeDeps{
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changeBuilder: changeBuilder,
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treeBuilder: treeBuilder,
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treeStorage: treeStorage,
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validator: &noOpTreeValidator{},
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rawChangeLoader: loader,
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aclList: aclList,
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flusher: &defaultFlusher{},
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changeBuilder: changeBuilder,
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treeBuilder: treeBuilder,
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treeStorage: treeStorage,
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validator: &noOpTreeValidator{},
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aclList: aclList,
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flusher: &defaultFlusher{},
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}
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}
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@ -115,15 +109,13 @@ func BuildTestableTree(treeStorage treestorage.TreeStorage, aclList list.AclList
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changeBuilder := &nonVerifiableChangeBuilder{
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ChangeBuilder: NewChangeBuilder(newMockKeyStorage(), root),
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}
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loader := newRawChangeLoader(treeStorage, changeBuilder)
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deps := objectTreeDeps{
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changeBuilder: changeBuilder,
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treeBuilder: newTreeBuilder(true, treeStorage, changeBuilder, loader),
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treeStorage: treeStorage,
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rawChangeLoader: loader,
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validator: &noOpTreeValidator{},
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aclList: aclList,
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flusher: &defaultFlusher{},
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changeBuilder: changeBuilder,
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treeBuilder: newTreeBuilder(true, treeStorage, changeBuilder, loader),
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treeStorage: treeStorage,
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validator: &noOpTreeValidator{},
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aclList: aclList,
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flusher: &defaultFlusher{},
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}
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return buildObjectTree(deps)
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@ -134,15 +126,13 @@ func BuildEmptyDataTestableTree(treeStorage treestorage.TreeStorage, aclList lis
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changeBuilder := &nonVerifiableChangeBuilder{
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ChangeBuilder: NewEmptyDataChangeBuilder(newMockKeyStorage(), root),
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}
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loader := newStorageLoader(treeStorage, changeBuilder)
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deps := objectTreeDeps{
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changeBuilder: changeBuilder,
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treeBuilder: newTreeBuilder(false, treeStorage, changeBuilder, loader),
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treeStorage: treeStorage,
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rawChangeLoader: loader,
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validator: &noOpTreeValidator{},
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aclList: aclList,
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flusher: &defaultFlusher{},
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changeBuilder: changeBuilder,
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treeBuilder: newTreeBuilder(false, treeStorage, changeBuilder, loader),
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treeStorage: treeStorage,
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validator: &noOpTreeValidator{},
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aclList: aclList,
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flusher: &defaultFlusher{},
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}
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return buildObjectTree(deps)
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@ -1,296 +0,0 @@
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package objecttree
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import (
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"context"
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"time"
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"github.com/anyproto/any-sync/commonspace/object/tree/treechangeproto"
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"github.com/anyproto/any-sync/commonspace/object/tree/treestorage"
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"github.com/anyproto/any-sync/util/slice"
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)
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type rawChangeLoader struct {
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treeStorage treestorage.TreeStorage
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changeBuilder ChangeBuilder
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alwaysFromStorage bool
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buf []byte
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// buffers
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idStack []string
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cache map[string]rawCacheEntry
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}
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type rawCacheEntry struct {
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change *Change
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removed bool
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nextSet bool
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size int
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}
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func newStorageLoader(treeStorage treestorage.TreeStorage, changeBuilder ChangeBuilder) *rawChangeLoader {
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loader := newRawChangeLoader(treeStorage, changeBuilder)
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loader.alwaysFromStorage = true
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return loader
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}
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func newRawChangeLoader(treeStorage treestorage.TreeStorage, changeBuilder ChangeBuilder) *rawChangeLoader {
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return &rawChangeLoader{
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treeStorage: treeStorage,
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changeBuilder: changeBuilder,
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}
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}
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func (r *rawChangeLoader) Load(commonSnapshot string, t *Tree, breakpoints []string) ([]*treechangeproto.RawTreeChangeWithId, error) {
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if commonSnapshot == t.root.Id && !r.alwaysFromStorage {
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return r.loadFromTree(t, breakpoints)
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} else {
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return r.loadFromStorage(commonSnapshot, t.Heads(), breakpoints)
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}
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}
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func (r *rawChangeLoader) loadFromTree(t *Tree, breakpoints []string) ([]*treechangeproto.RawTreeChangeWithId, error) {
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var stack []*Change
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for _, h := range t.headIds {
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stack = append(stack, t.attached[h])
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}
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convert := func(chs []*Change) (rawChanges []*treechangeproto.RawTreeChangeWithId, err error) {
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for _, ch := range chs {
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var raw *treechangeproto.RawTreeChangeWithId
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raw, err = r.changeBuilder.Marshall(ch)
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if err != nil {
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return
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}
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rawChanges = append(rawChanges, raw)
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}
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return
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}
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// getting all changes that we visit
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var results []*Change
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rootVisited := false
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t.dfsPrev(
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stack,
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breakpoints,
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func(ch *Change) bool {
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results = append(results, ch)
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return true
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},
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func(visited []*Change) {
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if t.root.visited {
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rootVisited = true
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}
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},
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)
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// if we stopped at breakpoints or there are no breakpoints
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if !rootVisited || len(breakpoints) == 0 {
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// in this case we will add root if there are no breakpoints
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return convert(results)
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}
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// now starting from breakpoints
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stack = stack[:0]
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for _, h := range breakpoints {
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if c, exists := t.attached[h]; exists {
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stack = append(stack, c)
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}
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}
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// doing another dfs to get all changes before breakpoints, we need to exclude them from results
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// if we don't have some breakpoints we will just ignore them
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t.dfsPrev(
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stack,
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[]string{},
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func(ch *Change) bool {
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return true
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},
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func(visited []*Change) {
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results = slice.DiscardFromSlice(results, func(change *Change) bool {
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return change.visited
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})
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},
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)
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// otherwise we want to exclude everything that wasn't in breakpoints
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return convert(results)
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}
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func (r *rawChangeLoader) loadFromStorage(commonSnapshot string, heads, breakpoints []string) ([]*treechangeproto.RawTreeChangeWithId, error) {
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// resetting cache
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r.cache = make(map[string]rawCacheEntry)
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defer func() {
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r.cache = nil
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}()
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existingBreakpoints := make([]string, 0, len(breakpoints))
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for _, b := range breakpoints {
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entry, err := r.loadEntry(b)
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if err != nil {
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continue
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}
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r.cache[b] = entry
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existingBreakpoints = append(existingBreakpoints, b)
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}
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r.cache[commonSnapshot] = rawCacheEntry{position: -1}
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dfs := func(
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commonSnapshot string,
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heads []string,
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shouldVisit func(entry rawCacheEntry, mapExists bool) bool,
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visit func(entry rawCacheEntry) rawCacheEntry) bool {
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// resetting stack
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r.idStack = r.idStack[:0]
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r.idStack = append(r.idStack, heads...)
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commonSnapshotVisited := false
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var err error
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for len(r.idStack) > 0 {
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id := r.idStack[len(r.idStack)-1]
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r.idStack = r.idStack[:len(r.idStack)-1]
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entry, exists := r.cache[id]
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if !shouldVisit(entry, exists) {
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continue
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}
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if id == commonSnapshot {
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commonSnapshotVisited = true
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continue
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}
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if !exists {
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entry, err = r.loadEntry(id)
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if err != nil {
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continue
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}
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}
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// setting the counter when we visit
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entry = visit(entry)
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r.cache[id] = entry
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for _, prev := range entry.change.PreviousIds {
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if prev == commonSnapshot {
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commonSnapshotVisited = true
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break
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}
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prevEntry, exists := r.cache[prev]
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if !shouldVisit(prevEntry, exists) {
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continue
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}
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r.idStack = append(r.idStack, prev)
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}
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}
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return commonSnapshotVisited
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}
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// preparing first pass
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r.idStack = append(r.idStack, heads...)
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var buffer []*treechangeproto.RawTreeChangeWithId
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rootVisited := dfs(commonSnapshot, heads,
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func(_ rawCacheEntry, mapExists bool) bool {
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return !mapExists
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},
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func(entry rawCacheEntry) rawCacheEntry {
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buffer = append(buffer, entry.rawChange)
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entry.position = len(buffer) - 1
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return entry
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})
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// checking if we stopped at breakpoints
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if !rootVisited {
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return buffer, nil
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}
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// if there are no breakpoints then we should load root also
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if len(breakpoints) == 0 {
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common, err := r.loadEntry(commonSnapshot)
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if err != nil {
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return nil, err
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}
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buffer = append(buffer, common.rawChange)
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return buffer, nil
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}
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// marking all visited as nil
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dfs(commonSnapshot, existingBreakpoints,
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func(entry rawCacheEntry, mapExists bool) bool {
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// only going through already loaded changes
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return mapExists && !entry.removed
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},
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func(entry rawCacheEntry) rawCacheEntry {
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entry.removed = true
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if entry.position != -1 {
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buffer[entry.position] = nil
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}
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return entry
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})
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// discarding visited
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buffer = slice.DiscardFromSlice(buffer, func(change *treechangeproto.RawTreeChangeWithId) bool {
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return change == nil
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})
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return buffer, nil
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}
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func (r *rawChangeLoader) loadEntry(id string) (entry rawCacheEntry, err error) {
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ctx, cancel := context.WithTimeout(context.Background(), time.Second*30)
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defer cancel()
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rawChange, err := r.treeStorage.GetRawChange(ctx, id)
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if err != nil {
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return
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}
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change, err := r.changeBuilder.Unmarshall(rawChange, false)
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if err != nil {
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return
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}
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entry = rawCacheEntry{
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change: change,
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rawChange: rawChange,
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position: -1,
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size: len(rawChange.RawChange),
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}
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return
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}
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func (r *rawChangeLoader) loadRaw(id string) (ch *treechangeproto.RawTreeChangeWithId, err error) {
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ctx, cancel := context.WithTimeout(context.Background(), time.Second*30)
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defer cancel()
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return r.treeStorage.GetRawChange(ctx, id)
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}
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func (r *rawChangeLoader) loadAppendRaw(id string) (ch *treechangeproto.RawTreeChangeWithId, err error) {
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ctx, cancel := context.WithTimeout(context.Background(), time.Second*30)
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defer cancel()
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return r.treeStorage.GetAppendRawChange(ctx, r.buf[:0], id)
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}
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func (r *rawChangeLoader) loadAppendEntry(id string) (entry rawCacheEntry, err error) {
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rawChange, err := r.loadAppendRaw(id)
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if err != nil {
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return
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}
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size := len(rawChange.RawChange)
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r.buf = rawChange.RawChange
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change, err := r.changeBuilder.UnmarshallReduced(rawChange)
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if err != nil {
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return
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}
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entry = rawCacheEntry{
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change: change,
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position: -1,
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size: size,
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}
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return
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}
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func (r *rawChangeLoader) Root() *treechangeproto.RawTreeChangeWithId {
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root, _ := r.treeStorage.Root()
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return root
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}
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@ -64,15 +64,23 @@ func (tb *treeBuilder) build(opts treeBuilderOpts) (tr *Tree, err error) {
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var snapshot string
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if !opts.full {
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if len(opts.theirSnapshotPath) == 0 {
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our := opts.ourSnapshotPath[len(opts.ourSnapshotPath)-1]
|
||||
lowest := tb.lowestSnapshots(cache, opts.theirHeads, our)
|
||||
if len(lowest) != 1 {
|
||||
snapshot, err = tb.commonSnapshot(lowest)
|
||||
if len(opts.ourSnapshotPath) == 0 {
|
||||
common, err := tb.storage.CommonSnapshot()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
snapshot = common
|
||||
} else {
|
||||
snapshot = lowest[0]
|
||||
our := opts.ourSnapshotPath[len(opts.ourSnapshotPath)-1]
|
||||
lowest := tb.lowestSnapshots(cache, opts.theirHeads, our)
|
||||
if len(lowest) != 1 {
|
||||
snapshot, err = tb.commonSnapshot(lowest)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
} else {
|
||||
snapshot = lowest[0]
|
||||
}
|
||||
}
|
||||
} else {
|
||||
snapshot, err = commonSnapshotForTwoPaths(opts.ourSnapshotPath, opts.theirSnapshotPath)
|
||||
|
@ -81,7 +89,7 @@ func (tb *treeBuilder) build(opts treeBuilderOpts) (tr *Tree, err error) {
|
|||
}
|
||||
}
|
||||
} else {
|
||||
snapshot = tb.treeStorage.Id()
|
||||
snapshot = tb.storage.Id()
|
||||
}
|
||||
snapshotCh, err := tb.storage.Get(tb.ctx, snapshot)
|
||||
if err != nil {
|
||||
|
@ -89,13 +97,15 @@ func (tb *treeBuilder) build(opts treeBuilderOpts) (tr *Tree, err error) {
|
|||
}
|
||||
rawChange := &treechangeproto.RawTreeChangeWithId{}
|
||||
var changes []*Change
|
||||
err = tb.storage.GetAfterOrder(tb.ctx, snapshotCh.OrderId, func(ctx context.Context, change StorageChange) (shouldContinue bool) {
|
||||
rawChange.Id = change.Id
|
||||
rawChange.RawChange = change.RawChange
|
||||
err = tb.storage.GetAfterOrder(tb.ctx, snapshotCh.OrderId, func(ctx context.Context, storageChange StorageChange) (shouldContinue bool) {
|
||||
rawChange.Id = storageChange.Id
|
||||
rawChange.RawChange = storageChange.RawChange
|
||||
ch, err := tb.builder.Unmarshall(rawChange, false)
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
ch.OrderId = storageChange.OrderId
|
||||
ch.SnapshotCounter = storageChange.SnapshotCounter
|
||||
changes = append(changes, ch)
|
||||
return true
|
||||
})
|
||||
|
@ -103,7 +113,6 @@ func (tb *treeBuilder) build(opts treeBuilderOpts) (tr *Tree, err error) {
|
|||
return nil, err
|
||||
}
|
||||
tr = &Tree{}
|
||||
// TODO: enrich data with order ids
|
||||
changes = append(changes, opts.newChanges...)
|
||||
tr.AddFast(changes...)
|
||||
return tr, nil
|
||||
|
|
Loading…
Add table
Add a link
Reference in a new issue