feat: add conf_path in PetrelBackend

mmcv/fileio/file_client.py

@@ -95,6 +95,7 @@ class PetrelBackend(BaseStorageBackend):
         path_mapping (dict, optional): Path mapping dict from local path to
             Petrel path. When ``path_mapping={'src': 'dst'}``, ``src`` in
             ``filepath`` will be replaced by ``dst``. Default: None.
+        conf_path (str, optional): Petrel client config path. Default: None.
         enable_mc (bool, optional): Whether to enable memcached support.
             Default: True.
 
@@ -108,14 +109,15 @@ class PetrelBackend(BaseStorageBackend):
 
     def __init__(self,
                  path_mapping: Optional[dict] = None,
+                 conf_path: str = None,
                  enable_mc: bool = True):
         try:
             from petrel_client import client
         except ImportError:
             raise ImportError('Please install petrel_client to enable '
                               'PetrelBackend.')
 
-        self._client = client.Client(enable_mc=enable_mc)
+        self._client = client.Client(conf_path=conf_path, enable_mc=enable_mc)
         assert isinstance(path_mapping, dict) or path_mapping is None
         self.path_mapping = path_mapping
 

tests/test_fileclient.py

@@ -78,7 +78,11 @@ def Get(self, filepath):
 
 class MockPetrelClient:
 
-    def __init__(self, enable_mc=True, enable_multi_cluster=False):
+    def __init__(self,
+                 conf_path=None,
+                 enable_mc=True,
+                 enable_multi_cluster=False):
+        self.conf_path = conf_path
         self.enable_mc = enable_mc
         self.enable_multi_cluster = enable_multi_cluster