[Other] Hub feature: add model hub management for fastdeploy (#453)

* add hub tool for fastdeploy

* fix format

* refactor code

* remove EasyDict

Co-authored-by: Jason <jiangjiajun@baidu.com>

python/fastdeploy/utils/hub_config.py

@@ -0,0 +1,76 @@
+# Copyright (c) 2022  PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import hashlib
+import os
+import time
+import json
+import uuid
+import yaml
+
+import fastdeploy.utils.hub_env as hubenv
+
+
+class HubConfig:
+    '''
+    FastDeploy model management configuration class.
+    '''
+
+    def __init__(self):
+        self._initialize()
+        self.file = os.path.join(hubenv.CONF_HOME, 'config.yaml')
+
+        if not os.path.exists(self.file):
+            self.flush()
+            return
+
+        with open(self.file, 'r') as file:
+            try:
+                cfg = yaml.load(file, Loader=yaml.FullLoader)
+                self.data.update(cfg)
+            except:
+                ...
+
+    def _initialize(self):
+        # Set default configuration values.
+        self.data = {}
+        self.data['server'] = 'http://paddlepaddle.org.cn/paddlehub'
+
+    def reset(self):
+        '''Reset configuration to default.'''
+        self._initialize()
+        self.flush()
+
+    @property
+    def server(self):
+        '''Model server url.'''
+        return self.data['server']
+
+    @server.setter
+    def server(self, url: str):
+        self.data['server'] = url
+        self.flush()
+
+    def flush(self):
+        '''Flush the current configuration into the configuration file.'''
+        with open(self.file, 'w') as file:
+            cfg = json.loads(json.dumps(self.data))
+            yaml.dump(cfg, file)
+
+    def __str__(self):
+        cfg = json.loads(json.dumps(self.data))
+        return yaml.dump(cfg)
+
+
+config = HubConfig()