speedup terminate-droplets command

greenhost_cloud/cosmos.py

@@ -298,14 +298,29 @@ def terminate_droplets_by_name(name_regex: str, ndays: int = 0,
     if 'NO_TERMINATE_DROPLETS' in os.environ:
         noterminate_droplets = os.environ['NO_TERMINATE_DROPLETS'].split(',')
 
+    # List of droplets that will be terminated
+    terminate_droplets = []
+
     for droplet in all_droplets:
         if droplet['name'] not in noterminate_droplets:
             if re.match(name_regex, droplet['name']):
                 if droplet['created_at'] < threshold_time:
-                    delete_domain_records_by_name(
-                        domain, r'^\*.'+droplet['name'])
-                    delete_domain_records_by_name(domain, '^'+droplet['name'])
-                    terminate_droplet(droplet['id'])
+                    terminate_droplets.append(droplet)
+
+    # First stop all droplets
+    for droplet in terminate_droplets:
+        shutdown_droplet(droplet['id'])
+
+    # Then delete all domain names associated with the droplets
+    for droplet in terminate_droplets:
+        delete_domain_records_by_name(
+            domain, r'^\*.'+droplet['name'])
+        delete_domain_records_by_name(domain, '^'+droplet['name'])
+
+    # Lastly delete all droplets:
+    for droplet in terminate_droplets:
+        wait_for_state(droplet['id'], 'stopped')
+        delete_droplet(droplet['id'])
 
 
 def wait_for_ssh(droplet_ip: str):