[WIP] force install role and its deps (#49347)

changelogs/fragments/force_role_with_deps.yml

@@ -0,0 +1,2 @@
+minor_changes:
+    - allow user to force install a role and it's dependencies

lib/ansible/cli/galaxy.py

@@ -115,6 +115,9 @@ class GalaxyCLI(CLI):
                                         ' file (/etc/ansible/roles if not configured)', type='str')
         if self.action in ("init", "install"):
             self.parser.add_option('-f', '--force', dest='force', action='store_true', default=False, help='Force overwriting an existing role')
+            if self.action == "install":
+                self.parser.add_option('--force-with-deps', dest='force_with_deps', action='store_true', default=False,
+                                       help="Force overwriting an existing role and it's dependencies")
 
     def init_parser(self):
         ''' create an options parser for bin/ansible '''
@@ -311,7 +314,12 @@ class GalaxyCLI(CLI):
             raise AnsibleOptionsError("- you must specify a user/role name or a roles file")
 
         no_deps = context.CLIARGS['no_deps']
-        force = context.CLIARGS['force']
+        force_deps = context.CLIARGS['force_with_deps']
+
+        if no_deps and force_deps:
+            raise AnsibleOptionsError("You cannot both force dependencies and no dependencies")
+
+        force = context.CLIARGS['force'] or force_deps
 
         roles_left = []
         if role_file:
@@ -321,7 +329,7 @@ class GalaxyCLI(CLI):
                     try:
                         required_roles = yaml.safe_load(f.read())
                     except Exception as e:
-                        raise AnsibleError("Unable to load data from the requirements file: %s" % role_file)
+                        raise AnsibleError("Unable to load data from the requirements file (%s): %s" % (role_file, to_native(e)))
 
                     if required_roles is None:
                         raise AnsibleError("No roles found in file: %s" % role_file)
@@ -404,16 +412,25 @@ class GalaxyCLI(CLI):
                             continue
                         if dep_role.install_info is None:
                             if dep_role not in roles_left:
-                                display.display('- adding dependency: %s' % str(dep_role))
+                                display.display('- adding dependency: %s' % to_text(dep_role))
                                 roles_left.append(dep_role)
                             else:
                                 display.display('- dependency %s already pending installation.' % dep_role.name)
                         else:
                             if dep_role.install_info['version'] != dep_role.version:
-                                display.warning('- dependency %s from role %s differs from already installed version (%s), skipping' %
-                                                (str(dep_role), role.name, dep_role.install_info['version']))
+                                if force_deps:
+                                    display.display('- changing dependant role %s from %s to %s' %
+                                                    (dep_role.name, dep_role.install_info['version'], dep_role.version or "unspecified"))
+                                    dep_role.remove()
+                                    roles_left.append(dep_role)
+                                else:
+                                    display.warning('- dependency %s from role %s differs from already installed version (%s), skipping' %
+                                                    (to_text(dep_role), role.name, dep_role.install_info['version']))
                             else:
-                                display.display('- dependency %s is already installed, skipping.' % dep_role.name)
+                                if force_deps:
+                                    roles_left.append(dep_role)
+                                else:
+                                    display.display('- dependency %s is already installed, skipping.' % dep_role.name)
 
             if not installed:
                 display.warning("- %s was NOT installed successfully." % role.name)