added dynamic cred support during compile (#193)

(cherry picked from commit 9bf45c9b02f2e53c0fe3f0792f48b043adc197ee)

calm/dsl/decompile/credential.py

@@ -21,27 +21,48 @@ def render_credential_template(cls):
     user_attrs = cls.get_user_attrs()
     user_attrs["description"] = cls.__doc__
 
+    cred_type = user_attrs.get("cred_class", "")
+
     var_name = "BP_CRED_{}".format(get_valid_identifier(cls.__name__))
-    file_name = "{}_{}".format(var_name, user_attrs["type"])
+    user_attrs["var_name"] = var_name
+    if user_attrs.get("editables", {}):
+        user_attrs["editables"] = user_attrs["editables"].get_dict()
+    CRED_VAR_NAME_MAP[user_attrs["name"]] = var_name
+
+    if cred_type == "static":
+
+        file_name = "{}_{}".format(var_name, user_attrs["type"])
+        create_file_from_file_name(file_name)
+        user_attrs["value"] = file_name
+        text = render_template("basic_credential.py.jinja2", obj=user_attrs)
+
+    elif cred_type == "dynamic":
+
+        for var_obj in user_attrs.get("variable_list", []):
+            if var_obj.type == "SECRET":
+                file_name = "{}_VAR_{}_SECRET".format(
+                    var_name, get_valid_identifier(var_obj.name)
+                )
+                create_file_from_file_name(file_name)
+                var_obj.value = file_name
+
+        text = render_template("dynamic_credential.py.jinja2", obj=user_attrs)
+
+    else:
+        raise TypeError("{} is not a supported cred class".format(cred_type))
+    return text.strip()
+
+
+def create_file_from_file_name(file_name):
+    """create a file on local directory and add to global file stack for given file name"""
     file_loc = os.path.join(get_local_dir(), file_name)
 
     # Storing empty value in the file
     with open(file_loc, "w+") as fd:
         fd.write("")
 
-    user_attrs["var_name"] = var_name
-    user_attrs["value"] = file_name
-
-    if user_attrs.get("editables", {}):
-        user_attrs["editables"] = user_attrs["editables"].get_dict()
-
-    # update the map
-    CRED_VAR_NAME_MAP[user_attrs["name"]] = var_name
     CRED_FILES.append(file_name)
 
-    text = render_template("credential.py.jinja2", obj=user_attrs)
-    return text.strip()
-
 
 def get_cred_var_name(cred_name):
     """Get the var name for credential"""

calm/dsl/decompile/schemas/dynamic_credential.py.jinja2

@@ -0,0 +1,17 @@
+{% macro var_dict_obj(var_list) %}
+{
+{% for var in var_list %}
+'{{var.name}}': {% if var.type == "SECRET" %} {{var.value}} {% else %} '{{var.value}}' {% endif %},
+{% endfor %}
+}
+{% endmacro %}
+
+{% macro cred(obj) %}
+{% if obj.default %}
+{{obj.var_name}} = dynamic_cred('{{obj.username}}', Ref.Account('{{obj.account}}'), {% if obj.resource_type %}resource_type=Ref.Resource_Type('{{obj.resource_type}}'){%- endif %}, variable_dict={{var_dict_obj(obj.variable_list)|indent(2)}}, name='{{obj.name}}', default=True, type='{{obj.type}}', {% if obj.editables %}editables = {{obj.editables}}{%- endif %})
+{% else %}
+{{obj.var_name}} = dynamic_cred('{{obj.username}}', Ref.Account('{{obj.account}}'), {% if obj.resource_type %}resource_type=Ref.Resource_Type('{{obj.resource_type}}'){%- endif %}, variable_dict={{var_dict_obj(obj.variable_list)|indent(2)}}, name='{{obj.name}}', type='{{obj.type}}', {% if obj.editables %}editables = {{obj.editables}}{%- endif %})
+{% endif %}
+{% endmacro %}
+
+{{ cred(obj) }}