Check if repo_id is valid and set repo_id to VRepoInfo (#733)

* Check if repo_id is valid and set repo_id to VRepoInfo

* Don't retain when traverse base commit

* Skip check blocks when verify base commit

---------

Co-authored-by: 杨赫然 <heran.yang@seafile.com>

fileserver/repomgr/repomgr.go

@@ -110,6 +110,7 @@ func Get(id string) *Repo {
 
 	if originRepoID.Valid {
 		repo.VirtualInfo = new(VRepoInfo)
+		repo.VirtualInfo.RepoID = id
 		repo.VirtualInfo.OriginRepoID = originRepoID.String
 		repo.StoreID = originRepoID.String
 
@@ -234,6 +235,7 @@ func GetEx(id string) *Repo {
 	}
 	if originRepoID.Valid {
 		repo.VirtualInfo = new(VRepoInfo)
+		repo.VirtualInfo.RepoID = id
 		repo.VirtualInfo.OriginRepoID = originRepoID.String
 		repo.StoreID = originRepoID.String
 
@@ -323,7 +325,7 @@ func GetVirtualRepoInfoByOrigin(originRepo string) ([]*VRepoInfo, error) {
 	defer row.Close()
 	for row.Next() {
 		vRepoInfo := new(VRepoInfo)
-		if err := row.Scan(&vRepoInfo.OriginRepoID, &vRepoInfo.Path, &vRepoInfo.BaseCommitID); err != nil {
+		if err := row.Scan(&vRepoInfo.RepoID, &vRepoInfo.OriginRepoID, &vRepoInfo.Path, &vRepoInfo.BaseCommitID); err != nil {
 			if err != sql.ErrNoRows {
 				return nil, err
 			}

server/gc/gc-core.c

@@ -95,6 +95,8 @@ typedef struct {
     SeafDBTrans *trans;
     gint64 keep_alive_last_time;
     gint64 keep_alive_obj_counter;
+
+    gboolean traverse_base_commit;
 } GCData;
 
 static int
@@ -166,6 +168,12 @@ fs_callback (SeafFSManager *mgr,
 
     add_fs_to_index(data, obj_id);
 
+    // If traversing the base_commit, only the fs objects need to be retained, while the block does not.
+    // This is because only the fs objects are needed when merging virtual repo.
+    if (data->traverse_base_commit) {
+        return TRUE;
+    }
+
     if (type == SEAF_METADATA_TYPE_FILE &&
         add_blocks_to_index (mgr, data, obj_id) < 0)
         return FALSE;
@@ -422,12 +430,14 @@ populate_gc_index_for_repo (GCData *data, SeafDBTrans *trans)
             if (!vinfo) {
                 continue;
             }
+            data->traverse_base_commit = TRUE;
             res = seaf_commit_manager_traverse_commit_tree (seaf->commit_mgr,
                                                             repo->store_id, repo->version,
                                                             vinfo->base_commit,
                                                             traverse_commit,
                                                             data,
                                                             FALSE);
+            data->traverse_base_commit = FALSE;
             seaf_virtual_repo_info_free (vinfo);
             if (!res) {
                 seaf_warning ("Failed to traverse base commit %s for virtual repo %s.\n", vinfo->base_commit, repo_id);
@@ -1002,6 +1012,9 @@ delete_garbaged_repos (int dry_run, int thread_num)
 
     for (ptr = del_repos; ptr; ptr = ptr->next) {
         repo_id = ptr->data;
+        if (!is_uuid_valid(repo_id)) {
+            continue;
+        }
 
         /* Confirm repo doesn't exist before removing blocks. */
         if (!seaf_repo_manager_repo_exists (seaf->repo_mgr, repo_id)) {

server/gc/verify.c

@@ -7,6 +7,7 @@ typedef struct VerifyData {
     gint64 truncate_time;
     gboolean traversed_head;
     GHashTable *exist_blocks;
+    gboolean traverse_base_commit;
 } VerifyData;
 
 static int
@@ -47,6 +48,10 @@ fs_callback (SeafFSManager *mgr,
 {
     VerifyData *data = user_data;
 
+    if (data->traverse_base_commit) {
+        return TRUE;
+    }
+
     if (type == SEAF_METADATA_TYPE_FILE && check_blocks (data, obj_id) < 0)
         return FALSE;
 
@@ -100,6 +105,8 @@ verify_virtual_repos (VerifyData *data)
         return 0;
     }
 
+    data->traverse_base_commit = TRUE;
+
     GList *vrepo_ids = NULL, *ptr;
     char *repo_id;
     SeafVirtRepo *vinfo;
@@ -128,6 +135,7 @@ verify_virtual_repos (VerifyData *data)
             goto out;
         }
     }
+    data->traverse_base_commit = FALSE;
 
 out:
     string_list_free (vrepo_ids);