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How to use apply_changes_in_loop method in localstack

Best Python code snippet using localstack_python

template_deployer.py

Source:template_deployer.py

...1263            raise NoStackUpdates("No updates are to be performed.")1264        # merge stack outputs1265        existing_stack.template["Outputs"].update(new_stack.template.get("Outputs", {}))1266        # start deployment loop1267        return self.apply_changes_in_loop(1268            changes, existing_stack, stack_name, action=action, new_stack=new_stack1269        )1270    def apply_changes_in_loop(self, changes, stack, stack_name, action=None, new_stack=None):1271        from localstack.services.cloudformation.cloudformation_api import StackChangeSet1272        def _run(*args):1273            try:1274                self.do_apply_changes_in_loop(changes, stack, stack_name)1275                status = "%s_COMPLETE" % action1276            except Exception as e:1277                LOG.debug(1278                    'Error applying changes for CloudFormation stack "%s": %s %s'1279                    % (stack.stack_name, e, traceback.format_exc())1280                )1281                status = "%s_FAILED" % action1282            stack.set_stack_status(status)1283            if isinstance(new_stack, StackChangeSet):1284                new_stack.metadata["Status"] = status1285                new_stack.metadata["ExecutionStatus"] = (1286                    "EXECUTE_FAILED" if "FAILED" in status else "EXECUTE_COMPLETE"1287                )1288                new_stack.metadata["StatusReason"] = "Deployment %s" % (1289                    "failed" if "FAILED" in status else "succeeded"1290                )1291        # run deployment in background loop, to avoid client network timeouts1292        return start_worker_thread(_run)1293    def do_apply_changes_in_loop(self, changes, stack, stack_name: str):1294        # apply changes in a retry loop, to resolve resource dependencies and converge to the target state1295        changes_done = []1296        max_iters = 301297        new_resources = stack.resources1298        # apply default props before running the loop1299        for resource_id, resource in new_resources.items():1300            add_default_resource_props(1301                resource,1302                stack.stack_name,1303                resource_id=resource_id,1304                existing_resources=new_resources,1305            )1306        # start deployment loop1307        for i in range(max_iters):...

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