added -h/--hooks-only flag for updaing EC2 configuration without affe…

…cting the stack.

src/paco/commands/cmd_delete.py

@@ -22,6 +22,7 @@ def delete_command(
     warn,
     disable_validation,
     quiet_changes_only,
+    hooks_only,
     config_scope,
     home='.'
 ):
@@ -36,6 +37,7 @@ def delete_command(
         warn,
         disable_validation,
         quiet_changes_only,
+        hooks_only,
         config_scope,
         home
     )

src/paco/commands/cmd_lambda.py

@@ -32,6 +32,7 @@ def lambda_deploy(
     warn,
     disable_validation,
     quiet_changes_only,
+    hooks_only,
     config_scope,
     home='.',
 ):
@@ -49,6 +50,7 @@ def lambda_deploy(
         warn,
         disable_validation,
         quiet_changes_only,
+        hooks_only,
         config_scope,
         home
     )
@@ -80,6 +82,7 @@ def lambda_invoke(
     warn,
     disable_validation,
     quiet_changes_only,
+    hooks_only,
     config_scope,
     home='.',
     event='',
@@ -122,6 +125,7 @@ def lambda_invoke(
         warn,
         disable_validation,
         quiet_changes_only,
+        hooks_only,
         config_scope,
         home
     )

src/paco/commands/cmd_provision.py

@@ -25,6 +25,7 @@ def provision_command(
     warn,
     disable_validation,
     quiet_changes_only,
+    hooks_only,
     config_scope,
     home='.',
     auto_publish_code=False,
@@ -41,6 +42,7 @@ def provision_command(
         warn,
         disable_validation,
         quiet_changes_only,
+        hooks_only,
         config_scope,
         home
     )

src/paco/commands/cmd_set.py

@@ -22,6 +22,7 @@ def set_command(
     warn,
     disable_validation,
     quiet_changes_only,
+    hooks_only,
     config_scope,
     home='.',
 ):
@@ -36,6 +37,7 @@ def set_command(
         warn,
         disable_validation,
         quiet_changes_only,
+        hooks_only,
         config_scope,
         home
     )

src/paco/commands/cmd_validate.py

@@ -21,6 +21,7 @@ def validate_command(
     warn,
     disable_validation,
     quiet_changes_only,
+    hooks_only,
     config_scope,
     home='.'
 ):
@@ -35,6 +36,7 @@ def validate_command(
         warn,
         disable_validation,
         quiet_changes_only,
+        hooks_only,
         config_scope,
         home
     )

src/paco/commands/helpers.py

@@ -64,6 +64,7 @@ def init_cloud_command(
     warn,
     disable_validation,
     quiet_changes_only,
+    hooks_only,
     config_scope,
     home
 ):
@@ -74,6 +75,7 @@ def init_cloud_command(
     paco_ctx.warn = warn
     paco_ctx.disable_validation = disable_validation
     paco_ctx.quiet_changes_only = quiet_changes_only
+    paco_ctx.hooks_only = hooks_only
     paco_ctx.command = command_name
     paco_ctx.config_scope = config_scope
     init_paco_home_option(paco_ctx, home)
@@ -280,6 +282,12 @@ def cloud_options(func):
         default=False,
         help='Supresses Cache, Protected, and Disabled messages.'
     )(func)
+    func = click.option(
+        '-h', '--hooks-only',
+        is_flag=True,
+        default=False,
+        help='When updating a stack, only run the hooks and skip the stack update.'
+    )(func)
     return func
 
 def cloud_args(func):

src/paco/config/paco_context.py

@@ -246,6 +246,7 @@ def __init__(self, home=None):
         self.yes = False
         self.warn = False
         self.quiet_changes_only = False
+        self.hooks_only = False
         self.paco_path = os.getcwd()
         self.aws_name = "Paco"
         self.controllers = {}

src/paco/stack/stack.py

@@ -452,6 +452,9 @@ def create_stack_name(self, name):
 
     def stack_success(self):
         "Actions to perform when a stack action has been successfully finished"
+        # If the --h/--hooks-only flag is set, avoid saving the cache
+        if self.action == "update" and self.paco_ctx.hooks_only == True:
+            return
         if self.action != "delete":
             # Create cache file
             new_cache_id = self.gen_cache_id()
@@ -1359,6 +1362,10 @@ def update_stack(self):
             return
         self.action = "update"
         self.hooks.run("update", "pre", self)
+        if self.paco_ctx.hooks_only == True:
+            self.log_action("Update", "Supressed")
+            return
+
         self.log_action("Provision", "Update")
         stack_parameters = self.generate_stack_parameters(action=self.action)
         self.confirm_stack_parameter_changes(stack_parameters)