Fix Streaming to Data init

sdk/diffgram/core/core.py

@@ -70,6 +70,8 @@ def __init__(
         self.directory_id = None
         self.name_to_file_id = None
 
+        self.client_id = client_id
+        self.client_secret = client_secret
 
         if init_default_directory is True:
             self.set_default_directory(directory = self.directory)
@@ -78,9 +80,6 @@ def __init__(
         if refresh_local_label_dict is True:
             self.get_label_file_dict()
 
-        self.client_id = client_id
-        self.client_secret = client_secret
-
         self.label_schema_list = self.get_label_schema_list()
 
         self.directory_list = None

sdk/diffgram/core/diffgram_dataset_iterator.py

@@ -8,8 +8,16 @@
 
 
 class DiffgramDatasetIterator:
-
-    def __init__(self, project,
+    diffgram_file_id_list: list
+    max_size_cache: int = 1073741824
+    pool: ThreadPoolExecutor
+    project: 'Project'
+    file_cache: dict
+    _internal_file_list: list
+    current_file_index: int
+
+    def __init__(self,
+                 project,
                  diffgram_file_id_list,
                  validate_ids = True,
                  max_size_cache = 1073741824,
@@ -19,6 +27,21 @@ def __init__(self, project,
         :param project (sdk.core.core.Project): A Project object from the Diffgram SDK
         :param diffgram_file_list (list): An arbitrary number of file ID's from Diffgram.
         """
+        self.diffgram_file_id_list = []
+        self.max_size_cache = 1073741824
+        self.pool = None
+        self.file_cache = {}
+        self._internal_file_list = []
+        self.current_file_index = 0
+        self.start_iterator(
+            project = project,
+            diffgram_file_id_list = diffgram_file_id_list,
+            validate_ids = validate_ids,
+            max_size_cache = max_size_cache,
+            max_num_concurrent_fetches = max_num_concurrent_fetches)
+
+    def start_iterator(self, project, diffgram_file_id_list, validate_ids = True, max_size_cache = 1073741824,
+                       max_num_concurrent_fetches = 25):
         self.diffgram_file_id_list = diffgram_file_id_list
         self.max_size_cache = max_size_cache
         self.pool = ThreadPoolExecutor(max_num_concurrent_fetches)
@@ -62,7 +85,8 @@ def get_next_n_items(self, idx, num_items = 25):
         return True
 
     def __get_file_data_for_index(self, idx):
-        diffgram_file = self.project.file.get_by_id(self.diffgram_file_id_list[idx], with_instances = True, use_session = False)
+        diffgram_file = self.project.file.get_by_id(self.diffgram_file_id_list[idx], with_instances = True,
+                                                    use_session = False)
         instance_data = self.get_file_instances(diffgram_file)
         self.save_file_in_cache(idx, instance_data)
         return instance_data
@@ -88,7 +112,7 @@ def __validate_file_ids(self):
         if not self.diffgram_file_id_list:
             return
         result = self.project.file.file_list_exists(
-            self.diffgram_file_id_list, 
+            self.diffgram_file_id_list,
             use_session = False)
         if not result:
             raise Exception(

sdk/diffgram/core/directory.py

@@ -7,10 +7,10 @@
 
 class Directory(DiffgramDatasetIterator):
 
-    def __init__(self, 
-                 client, 
-                 file_id_list_sliced = None, 
-                 init_file_ids = True, 
+    def __init__(self,
+                 client,
+                 file_id_list_sliced = None,
+                 init_file_ids = True,
                  validate_ids = True):
 
         self.client = client
@@ -25,11 +25,8 @@ def __init__(self,
             self.file_id_list = file_id_list_sliced
         super(Directory, self).__init__(self.client, self.file_id_list, validate_ids)
 
-
-
     def init_files(self):
         self.file_id_list = self.all_file_ids()
-
     def get_directory_list(self):
         """
         Get a list of available directories for a project
@@ -50,7 +47,7 @@ def get_directory_list(self):
         self.client.handle_errors(response)
 
         data = response.json()
-        
+
         directory_list_json = data.get('directory_list')
         default_directory_json = data.get('default_directory')
 
@@ -60,7 +57,6 @@ def get_directory_list(self):
         directory_list = self.convert_json_to_sdk_object(directory_list_json)
 
         return directory_list
-
 
     def convert_json_to_sdk_object(self, directory_list_json):
 
@@ -71,18 +67,21 @@ def convert_json_to_sdk_object(self, directory_list_json):
                 client = self.client,
                 init_file_ids = False,
                 validate_ids = False
-                )
+            )
             refresh_from_dict(new_directory, directory_json)
 
             # note timing issue, this needs to happen after id is refreshed
-            new_directory.init_files()  
+            new_directory.init_files()
+            new_directory.start_iterator(
+                project = new_directory.project,
+                diffgram_file_id_list = new_directory.file_id_list,
+                validate_ids = True
+            )
 
             directory_list.append(new_directory)
 
         return directory_list
 
-
-
     def all_files(self):
         """
             Get all the files of the directoy.
@@ -93,8 +92,8 @@ def all_files(self):
         result = []
         while page_num is not None:
             diffgram_files = self.list_files(
-                limit = 1000, 
-                page_num = page_num, 
+                limit = 1000,
+                page_num = page_num,
                 file_view_mode = 'base')
             page_num = self.file_list_metadata['next_page']
             result = result + diffgram_files
@@ -105,9 +104,9 @@ def all_file_ids(self, query = None):
         result = []
 
         diffgram_ids = self.list_files(
-            limit = 5000, 
-            page_num = page_num, 
-            file_view_mode = 'ids_only', 
+            limit = 5000,
+            page_num = page_num,
+            file_view_mode = 'ids_only',
             query = query)
 
         if diffgram_ids is False:
@@ -299,7 +298,6 @@ def get(self,
          TODO refactor set_directory_by_name() to use this
 
         """
-
         if name is None:
             raise Exception("No name provided.")
 
@@ -312,6 +310,7 @@ def get(self,
         for directory in self.client.directory_list:
 
             if directory.nickname == name:
+                directory.init_files()
                 return directory
 
             else: