rev 0.6

VERSION

@@ -1 +1 @@
-0.4
+0.6

src/appengine/__init__.py

@@ -48,6 +48,8 @@ class AppEngineException(Exception):
     def __init__(self, error: AEErrs, mesg=None) -> None:
         if mesg is None:
             self.mesg = str(error)
+        else:
+            self.mesg = mesg
         super().__init__(self.mesg)
         self.value = error.value
 
@@ -105,8 +107,8 @@ class Commands(Thread):
         self.stopped = True
 
     def free(self):
-        """ Virtual method used to clean resources for threaded Commands
-        when they are stopped.
+        """ Virtual method used to clean resources for all Commands
+        when the application is exited.
         """
         pass
 
@@ -174,7 +176,28 @@ class Commands(Thread):
 
         if module == "":
             if method == 'help':
-                return self.list_modules()
+                # No argument was given to the help function
+                if len(args) == 0 and len(kwargs) == 0:
+                    msg  = "Type 'help <module>' to have the list of module's functions.\n"
+                    msg += "Type 'help <module>.<function>' to documentation of a specific function.\n"
+                    success, ret = self.list_modules()
+                    return success, msg + ret
+                else:
+                    # 1 argument has been provided
+                    if len(args) > 0:
+                        arg = args[0]
+                    else:
+                        arg = list(kwargs.keys())[0]
+                    spl = arg.split(".", 1)
+
+                    # help <module>
+                    if len(spl) == 1:
+                        module = arg
+                    # help <module>.<method>
+                    else:
+                        module = spl[0]
+                        args = [spl[1]]
+                        kwargs = {}
             else:
                 module = self.defmod
 
@@ -278,7 +301,11 @@ class CommandsLoader:
         obj = None
         for n, c in members:
             if issubclass(c, Commands) and (n != "Commands"):
-                obj = c(conf, self.log)
+                try:
+                    obj = c(conf, self.log)
+                except:
+                    self.log.error(f"The object '{c.__name__}' could not be instantiated.")
+                    continue
                 obj.log = self.log
                 obj.lock = self.lock
                 obj.stop_all_event = self.stop_event
@@ -293,9 +320,15 @@ class CommandsLoader:
     def _load_dependencies(self):
         for k, v in self.cmods.items():
             if hasattr(v, "dependencies"):
-                for p in v.dependencies:
-                    if p in self.cmods.keys():
-                        setattr(v, p, self.cmods[p])
+                deps = v.dependencies
+                # dependencies can be a list or dictionary
+                if isinstance(v.dependencies, list):
+                    deps = {}
+                    for d in v.dependencies:
+                        deps[d] = d
+                for p, pv in deps.items():
+                    if pv in self.cmods.keys():
+                        setattr(v, p, self.cmods[pv])
                     else:
                         self.log.error(
                             'Dependency "{}" of module "{}" could not be satisfied'.format(
@@ -321,8 +354,7 @@ class CommandsLoader:
 
     def free(self):
         for k, v in self.cmods.items():
-            if v.threaded:
-                v.free()
+            v.free()
 
 
 class AppEngine: