allow non module project (#400)

* Allow non-module project in modules folder

* Fix py27 unicode issue 

* Remove language property for module

iotedgedev/module.py

@@ -13,7 +13,6 @@ class Module(object):
         self.utility = utility
         self.module_dir = module_dir
         self.module_json_file = os.path.join(self.module_dir, "module.json")
-        self.module_language = "csharp"
         self.file_json_content = None
         self.load_module_json()
 
@@ -21,7 +20,6 @@ class Module(object):
         if os.path.exists(self.module_json_file):
             try:
                 self.file_json_content = json.loads(Utility.get_file_contents(self.module_json_file, expandvars=True))
-                self.module_language = self.file_json_content.get("language").lower()
             except KeyError as e:
                 raise KeyError("Error parsing {0} from module.json file : {1}".format(str(e), self.module_json_file))
             except IOError:
@@ -29,10 +27,6 @@ class Module(object):
         else:
             raise FileNotFoundError("No module.json file found. module.json file is required in the root of your module folder")
 
-    @property
-    def language(self):
-        return self.module_language
-
     @property
     def platforms(self):
         return self.file_json_content.get("image", {}).get("tag", {}).get("platforms", "")

iotedgedev/modules.py

@@ -5,6 +5,7 @@ import sys
 from zipfile import ZipFile
 
 import commentjson
+import six
 from six import BytesIO
 from six.moves.urllib.request import urlopen
 
@@ -145,7 +146,9 @@ class Modules:
         modules_path = os.path.join(template_file_folder, self.envvars.MODULES_PATH)
         if os.path.isdir(modules_path):
             for folder_name in os.listdir(modules_path):
-                module = Module(self.envvars, self.utility, os.path.join(modules_path, folder_name))
+                project_folder = os.path.join(modules_path, folder_name)
+                if os.path.exists(os.path.join(project_folder, "module.json")):
+                    module = Module(self.envvars, self.utility, project_folder)
                     self._update_module_maps("MODULES.{0}".format(folder_name), module, placeholder_tag_map, tag_build_profile_map, default_platform)
 
         # get image tags for ${MODULEDIR<relative path>.xxx} placeholder
@@ -301,6 +304,9 @@ class Modules:
             launch_json_content = Utility.get_file_contents(launch_json_file)
             for key, value in replacements.items():
                 launch_json_content = launch_json_content.replace(key, value)
+            if PY2:
+                launch_json = commentjson.loads(six.binary_type(launch_json_content))
+            else:
                 launch_json = commentjson.loads(launch_json_content)
             if is_function and launch_json is not None and "configurations" in launch_json:
                 # for Function modules, there shouldn't be launch config for local debug