Start to thread through arguments

functions

@@ -100,11 +100,16 @@ dokku-ansible-deploy-pre-deploy() {
   declare desc="run the pre-deploy hook to setup an app"
 
   declare APP="$1"
+  declare APP_CONFIG_PATH="$DOKKU_LIB_ROOT/data/deploy.d/$APP"
+  declare PLUGIN_PATH="$PLUGIN_CORE_AVAILABLE_PATH/ansible-deploy"
   declare PREDEPLOY="$PLUGIN_CORE_AVAILABLE_PATH/ansible-deploy/scripts/predeploy.py"
 
   dokku_col_log_info1_quiet "Running pre-deploy steps"
-  /usr/bin/python3 "$PREDEPLOY"
 
+  /usr/bin/python3 "$PREDEPLOY"
+    --app "$APP" \
+    --app-config-path "$APP_CONFIG_PATH" \
+    --plugin-path "$PLUGIN_PATH"
 }
 
 dokku-ansible-deploy-post-deploy() {
@@ -126,5 +131,5 @@ dokku-ansible-deploy-post-delete() {
   declare POSTDELETE="$PLUGIN_CORE_AVAILABLE_PATH/ansible-deploy/scripts/postdelete.py"
 
   dokku_col_log_info1_quiet "Running post-delete steps"
-  /usr/bin/python3 "$POSTDELETE" "$APP"
+  /usr/bin/python3 "$POSTDELETE"
 }

scripts/predeploy.py

@@ -1,10 +1,47 @@
 #!/usr/bin/env python3
 
+from subprocess import check_output
+from os.path import exists
+from ruamel.yaml import YAML
+from argparse import ArgumentParser
 
-def predeploy():
+yaml = YAML()
+
+def yaml_load_file(target):
+    """Load a YAML file."""
+    try:
+        with open(target, "r") as handle:
+            return yaml.load(handle.read())
+    except Exception as exception:
+        msg = "-----> Failed to load {}, saw {}".format(target, str(exception))
+        print(msg)
+
+
+def load_config(app_config_path):
+    """Load the config.yml if it exists."""
+    config = "{}/vault/config.yml".format(app_config_path)
+
+    if exists(config):
+        print("-----> Loading {}".format(config))
+        return yaml_load_file(config)
+
+    print("-----> No {} discovered, moving on".format(config))
+
+
+def pre_deploy(app, app_config_path, plugin_path):
     """Pre-deploy steps."""
-    pass
+    config = load_config(app_config_path)
+
+    cmd = [
+        "ansible-playbook",
+        ""
+    ]
 
 
 if __name__ == '__main__':
-    predeploy()
+    parser = ArgumentParser()
+    parser.add_argument("--app", help="app name")
+    parser.add_argument("--app-config-path", help="app config path")
+    parser.add_argument("--plugin-path", help="plugin path")
+    args = parser.parse_args()
+    pre_deploy(args.app, args.app_config_path, args.plugin_path)