feat: check on custom labels

src/wanna/core/models/base_instance.py

@@ -22,3 +22,4 @@ class BaseInstanceModel(BaseModel, extra=Extra.ignore, validate_assignment=True)
     _zone = validator("zone", allow_reuse=True)(validators.validate_zone)
     _region = validator("region", allow_reuse=True)(validators.validate_region)
     _network = validator("network", allow_reuse=True)(validators.validate_network_name)
+    _labels = validator("labels", allow_reuse=True)(validators.validate_labels)

src/wanna/core/models/gcp_profile.py

@@ -47,6 +47,7 @@ class GCPProfileModel(BaseModel, extra=Extra.forbid):
 
     _ = validator("project_id", allow_reuse=True)(validators.validate_project_id)
     _ = validator("zone", allow_reuse=True)(validators.validate_zone)
+    _ = validator("labels", allow_reuse=True)(validators.validate_labels)
 
     @root_validator(pre=True)
     def parse_region_from_zone(cls, values):  # pylint: disable=no-self-argument,no-self-use

src/wanna/core/utils/validators.py

@@ -1,5 +1,6 @@
 import logging
 import re
+from typing import Dict
 
 from cron_validator import CronValidator
 from google.api_core import exceptions
@@ -151,3 +152,15 @@ def validate_project_id(project_id: str) -> str:
             "Cannot end with a hyphen."
         )
     return project_id
+
+
+def validate_labels(labels: Dict[str, str]) -> Dict[str, str]:
+    for key, value in labels.items():
+        if not re.match(r"^[a-z]{1}[a-z0-9_-]{0,62}$", key) or not re.match(r"^[a-z0-9_-]{0,63}$", value):
+            raise ValueError(
+                "Invalid custom label!"
+                "Keys and values can contain only lowercase letters, numeric characters,"
+                "underscores, and dashes. Max length is 63 characters."
+                "https://cloud.google.com/compute/docs/labeling-resources#requirements"
+            )
+    return labels