[edk2-staging/EdkRepo] [PATCH 2/3] EdkRepo: Multiple Command Package Command Factory Update

["Desimone, Ashley E" <ashley.e.desimone@intel.com>]

Add support for iterating through a list of command packages
from the global config file and generate a list of commands
to be included. Improve the the _is_command() function to
succesfully inspect command classes which do not derive
from the edkrepo base command class

Add support to list a command package as preferred.

Signed-off-by: Ashley E Desimone <ashley.e.desimone@intel.com>
Cc: Nate DeSimone <nathaniel.l.desimone@intel.com>
Cc: Puja Pandya <puja.pandya@intel.com>
---
 edkrepo/commands/command_factory.py | 51 ++++++++++++++++++++++++++++---------
 1 file changed, 39 insertions(+), 12 deletions(-)

diff --git a/edkrepo/commands/command_factory.py b/edkrepo/commands/command_factory.py
index abdfb1a..9f2e923 100644
--- a/edkrepo/commands/command_factory.py
+++ b/edkrepo/commands/command_factory.py
@@ -13,6 +13,7 @@ import os
 import sys
 from edkrepo.commands.edkrepo_command import EdkrepoCommand
 from edkrepo.commands.composite_command import CompositeCommand
+from edkrepo.config.config_factory import GlobalConfig
 
 def _is_command(CommandClass):
     if CommandClass == EdkrepoCommand:
@@ -20,12 +21,20 @@ def _is_command(CommandClass):
     if CommandClass in EdkrepoCommand.__subclasses__():
         return True
     #Use reflection to see if the class would work as a command anyway
-    funcs = inspect.getmembers(CommandClass, predicate=inspect.ismethod)
+    try:
+        cmd = CommandClass()
+    except:
+        return False
+    funcs = inspect.getmembers(cmd, predicate=inspect.ismethod)
     has_get_metadata = False
     has_run_command = False
     for func in funcs:
         if func[0] == 'get_metadata' and len(inspect.getargspec(func[1])[0]) == 1:
-            has_get_metadata = True
+            try:
+                cmd.get_metadata()
+                has_get_metadata = True
+            except:
+                has_get_metadata = False
         if func[0] == 'run_command':
             arg_spec = inspect.getargspec(func[1])
             if len(arg_spec[0]) == 3 and arg_spec[0][1] == "args" and arg_spec[0][2] == "config":
@@ -36,16 +45,34 @@ def _is_command(CommandClass):
         return False
 
 def get_commands():
-    commands = []
-    for module in os.listdir(os.path.dirname(__file__)):
-        if module == "__init__.py" or os.path.splitext(module)[1] != ".py":
-            continue
-        mod = importlib.import_module("edkrepo.commands.{}".format(os.path.splitext(module)[0]))
-        classes = inspect.getmembers(mod, predicate=inspect.isclass)
-        for cls in classes:
-            if _is_command(cls[1]):
-                commands.append(cls[1])
-    return commands
+    cfg_file = GlobalConfig()
+    cmd_pkg_list = cfg_file.command_packages_list
+    pref_cmd_pkg = cfg_file.pref_pkg
+    commands = {}
+    pref_commands = {}
+    final_cmd_list = []
+    cmd_search_dirs = []
+
+    for cmd_pkg in cmd_pkg_list:
+        mod = importlib.import_module(cmd_pkg)
+        cmd_search_dirs.append((cmd_pkg, os.path.dirname(mod.__file__)))
+    for cmd_dir in cmd_search_dirs:
+        for module in os.listdir(cmd_dir[1]):
+            if module == '__init__.py' or os.path.splitext(module)[1] != '.py':
+                continue
+            mod = importlib.import_module('{}.{}'.format(cmd_dir[0], os.path.splitext(module)[0]))
+            classes = inspect.getmembers(mod, predicate=inspect.isclass)
+            for cls in classes:
+                if _is_command(cls[1]):
+                    if cmd_dir[0] == pref_cmd_pkg:
+                        pref_commands.update([(cls[0], cls[1])])
+                    else:
+                        commands.update([(cls[0], cls[1])])
+    for key in commands.keys():
+        if key not in pref_commands.keys():
+            final_cmd_list.append(commands[key])
+    final_cmd_list.extend(pref_commands.values())
+    return final_cmd_list
 
 def create_composite_command():
     commands = get_commands()
-- 
2.16.2.windows.1