Bug 1939 fixed: : added a random suffix to the end of the Juju app name, in order...

[osm/N2VC.git] / n2vc / utils.py

diff --git a/n2vc/utils.py b/n2vc/utils.py
index 16a4733..286f0fc 100644 (file)
--- a/n2vc/utils.py
+++ b/n2vc/utils.py
@@ -15,12 +15,16 @@
 import base64
 import re
 import binascii
+import yaml
+import string
+import secrets
 from enum import Enum
 from juju.machine import Machine
 from juju.application import Application
 from juju.action import Action
 from juju.unit import Unit
 from n2vc.exceptions import N2VCInvalidCertificate
+from typing import Tuple
 
 
 def base64_to_cacert(b64string):
@@ -32,7 +36,11 @@ def base64_to_cacert(b64string):
     try:
         cacert = base64.b64decode(b64string).decode("utf-8")
 
-        cacert = re.sub(r"\\n", r"\n", cacert,)
+        cacert = re.sub(
+            r"\\n",
+            r"\n",
+            cacert,
+        )
     except binascii.Error as e:
         raise N2VCInvalidCertificate(message="Invalid CA Certificate: {}".format(e))
 
@@ -113,10 +121,59 @@ JujuStatusToOSM = {
     },
 }
 
-DB_DATA = Dict(
-    {
-        "api_endpoints": Dict(
-            {"table": "admin", "filter": {"_id": "juju"}, "key": "api_endpoints"}
-        )
-    }
-)
+
+def obj_to_yaml(obj: object) -> str:
+    """
+    Converts object to yaml format
+    :return: yaml data
+    """
+    # dump to yaml
+    dump_text = yaml.dump(obj, default_flow_style=False, indent=2)
+    # split lines
+    lines = dump_text.splitlines()
+    # remove !!python/object tags
+    yaml_text = ""
+    for line in lines:
+        index = line.find("!!python/object")
+        if index >= 0:
+            line = line[:index]
+        yaml_text += line + "\n"
+    return yaml_text
+
+
+def obj_to_dict(obj: object) -> dict:
+    """
+    Converts object to dictionary format
+    :return: dict data
+    """
+    # convert obj to yaml
+    yaml_text = obj_to_yaml(obj)
+    # parse to dict
+    return yaml.load(yaml_text, Loader=yaml.Loader)
+
+
+def get_ee_id_components(ee_id: str) -> Tuple[str, str, str]:
+    """
+    Get model, application and machine components from an execution environment id
+    :param ee_id:
+    :return: model_name, application_name, machine_id
+    """
+    parts = ee_id.split(".")
+    if len(parts) != 3:
+        raise Exception("invalid ee id.")
+    model_name = parts[0]
+    application_name = parts[1]
+    machine_id = parts[2]
+    return model_name, application_name, machine_id
+
+
+def generate_random_alfanum_string(size: int) -> str:
+    """
+    Generate random alfa-numeric string with a size given by argument
+    :param size:
+    :return: random generated string
+    """
+
+    return "".join(
+        secrets.choice(string.ascii_letters + string.digits) for i in range(size)
+    )