mirror of
https://github.com/anyproto/any-sync.git
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81 lines
2.9 KiB
Go
81 lines
2.9 KiB
Go
package synctree
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import (
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"fmt"
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"github.com/anyproto/any-sync/commonspace/object/tree/objecttree"
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"github.com/anyproto/any-sync/commonspace/object/tree/treechangeproto"
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"github.com/anyproto/any-sync/util/slice"
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)
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type RequestFactory interface {
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CreateHeadUpdate(t objecttree.ObjectTree, added []*treechangeproto.RawTreeChangeWithId) (msg *treechangeproto.TreeSyncMessage)
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CreateNewTreeRequest() (msg *treechangeproto.TreeSyncMessage)
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CreateEmptyFullSyncRequest(t objecttree.ObjectTree) (req *treechangeproto.TreeSyncMessage)
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CreateFullSyncRequest(t objecttree.ObjectTree, theirHeads, theirSnapshotPath []string) (req *treechangeproto.TreeSyncMessage, err error)
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CreateFullSyncResponse(t objecttree.ObjectTree, theirHeads, theirSnapshotPath []string) (*treechangeproto.TreeSyncMessage, error)
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}
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func NewRequestFactory() RequestFactory {
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return &requestFactory{}
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}
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type requestFactory struct{}
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func (r *requestFactory) CreateHeadUpdate(t objecttree.ObjectTree, added []*treechangeproto.RawTreeChangeWithId) (msg *treechangeproto.TreeSyncMessage) {
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return treechangeproto.WrapHeadUpdate(&treechangeproto.TreeHeadUpdate{
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Heads: t.Heads(),
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Changes: added,
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SnapshotPath: t.SnapshotPath(),
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}, t.Header())
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}
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func (r *requestFactory) CreateNewTreeRequest() (msg *treechangeproto.TreeSyncMessage) {
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return treechangeproto.WrapFullRequest(&treechangeproto.TreeFullSyncRequest{}, nil)
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}
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func (r *requestFactory) CreateEmptyFullSyncRequest(t objecttree.ObjectTree) (msg *treechangeproto.TreeSyncMessage) {
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return treechangeproto.WrapFullRequest(&treechangeproto.TreeFullSyncRequest{
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Heads: t.Heads(),
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SnapshotPath: t.SnapshotPath(),
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}, t.Header())
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}
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func (r *requestFactory) CreateFullSyncRequest(t objecttree.ObjectTree, theirHeads, theirSnapshotPath []string) (msg *treechangeproto.TreeSyncMessage, err error) {
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req := &treechangeproto.TreeFullSyncRequest{}
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if t == nil {
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return nil, fmt.Errorf("tree should not be empty")
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}
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req.Heads = t.Heads()
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req.SnapshotPath = t.SnapshotPath()
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var changesAfterSnapshot []*treechangeproto.RawTreeChangeWithId
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changesAfterSnapshot, err = t.ChangesAfterCommonSnapshot(theirSnapshotPath, theirHeads)
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if err != nil {
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return
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}
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req.Changes = changesAfterSnapshot
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msg = treechangeproto.WrapFullRequest(req, t.Header())
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return
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}
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func (r *requestFactory) CreateFullSyncResponse(t objecttree.ObjectTree, theirHeads, theirSnapshotPath []string) (msg *treechangeproto.TreeSyncMessage, err error) {
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resp := &treechangeproto.TreeFullSyncResponse{
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Heads: t.Heads(),
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SnapshotPath: t.SnapshotPath(),
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}
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if slice.UnsortedEquals(theirHeads, t.Heads()) {
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msg = treechangeproto.WrapFullResponse(resp, t.Header())
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return
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}
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ourChanges, err := t.ChangesAfterCommonSnapshot(theirSnapshotPath, theirHeads)
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if err != nil {
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return
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}
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resp.Changes = ourChanges
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msg = treechangeproto.WrapFullResponse(resp, t.Header())
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return
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}
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