check if environment variables are defined before starting deploy

Author: andresionek91

Makefile

@@ -1,7 +1,10 @@
 install-requirements:
 	pip install -r requirements.txt
 
-cloudformation-validate: install-requirements
+check-env-setup:
+	python -c 'from utils import check_environment_variables;  check_environment_variables()';
+
+cloudformation-validate: install-requirements check-env-setup
 	python -c 'from deploy_cloudformation import validate_templates;  validate_templates()';
 
 infra-deploy: cloudformation-validate

utils.py

@@ -60,3 +60,11 @@ def get_aws_account_id():
 
 def generate_hash(n):
     return str(uuid4().hex[:n])
+
+
+def check_environment_variables():
+    for env_var in ['AWS_REGION', 'ENVIRONMENT']:
+        try:
+            env_var_value = os.environ[env_var]
+        except KeyError:
+            raise KeyError(f'Environment variable {env_var} not found. Please set it up before starting.')