Added pylint plugin import checker

.pylintrc

@@ -36,7 +36,7 @@ persistent=yes
 
 # List of plugins (as comma separated values of python modules names) to load,
 # usually to register additional checkers.
-load-plugins=
+load-plugins=superset.extensions.pylint
 
 # Use multiple processes to speed up Pylint.
 jobs=2

superset/extensions/pylint.py

@@ -0,0 +1,60 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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 os
+from astroid import nodes
+from pylint.checkers import BaseChecker
+from pylint.lint import PyLinter
+
+
+class JSONLibraryImportChecker(BaseChecker):
+
+    name = "json-library-import-checker"
+    priority = -1
+    msgs = {
+        "C9999": (
+            "Disallowed json import used, use superset.utils.json instead",
+            "disallowed-import",
+            "Used when a disallowed import is used in a specific file.",
+        ),
+    }
+    exclude_files = [
+        "setup.py",
+        "superset/utils/json.py",
+        "superset/config.py",
+        "superset/cli/update.py",
+        "superset/key_value/types.py",
+        "superset/translations/utils.py",
+        "superset/extensions/__init__.py",
+    ]
+    path_strip_prefix = os.getcwd() + os.sep
+
+    def visit_import(self, node: nodes.Import) -> None:
+        file = (node.root().file).replace(self.path_strip_prefix, "", 1)
+        if file not in self.exclude_files:
+            for module_name, _ in node.names:
+                if module_name in ["json", "simplejson"]:
+                    self.add_message("disallowed-import", node=node)
+
+    def visit_importfrom(self, node: nodes.ImportFrom) -> None:
+        file = (node.root().file).replace(self.path_strip_prefix, "", 1)
+        if file not in self.exclude_files:
+            if node.modname in ["json", "simplejson"]:
+                self.add_message("disallowed-import", node=node)
+
+
+def register(linter: PyLinter) -> None:
+    linter.register_checker(JSONLibraryImportChecker(linter))