Check service existence before creation

src/spring/HISTORY.md

@@ -1,5 +1,9 @@
 Release History
 ===============
+1.1.5
+---
+* Add service instance existance check before service creation
+
 1.1.4
 ---
 * Add warning that `az spring app-insights` don't support Enterprise tier.

src/spring/azext_spring/custom.py

@@ -85,6 +85,13 @@ def _update_application_insights_asc_create(cmd,
                         monitoring_setting_resource=monitoring_setting_resource)
 
 
+def _check_spring_instance_existed(cmd, client, resource_group, name, location, **_):
+    availability_parameters = models.NameAvailabilityParameters(type="Microsoft.AppPlatform/Spring", name=name)
+    name_availability = client.services.check_name_availability(location, availability_parameters)
+    if not name_availability.name_available and name_availability.reason == "AlreadyExists":
+        raise ClientRequestError("Service instance '{}' under resource group '{}' is already existed in region '{}', cannot create again.".format(name, resource_group, location))
+
+
 def spring_update(cmd, client, resource_group, name, app_insights_key=None, app_insights=None,
                   disable_app_insights=None, sku=None, tags=None, build_pool_size=None,
                   enable_log_stream_public_endpoint=None, ingress_read_timeout=None, no_wait=False):

src/spring/azext_spring/spring_instance.py

@@ -7,7 +7,7 @@
 # pylint: disable=unused-argument, logging-format-interpolation, protected-access, wrong-import-order, too-many-lines
 from ._utils import (wait_till_end, _get_rg_location)
 from .vendored_sdks.appplatform.v2022_05_01_preview import models
-from .custom import (_warn_enable_java_agent, _update_application_insights_asc_create)
+from .custom import (_warn_enable_java_agent, _update_application_insights_asc_create, _check_spring_instance_existed)
 from ._build_service import _update_default_build_agent_pool
 from .buildpack_binding import create_default_buildpack_binding_for_application_insights
 from ._tanzu_component import (create_application_configuration_service,
@@ -38,6 +38,12 @@ def create(self, **kwargs):
 
     def before_create(self, **kwargs):
         _warn_enable_java_agent(**kwargs)
+        _check_spring_instance_existed(self.cmd,
+                                       self.client,
+                                       self.resource_group,
+                                       self.name,
+                                       self.location,
+                                       **kwargs)
 
     def after_create(self, **kwargs):
         _update_application_insights_asc_create(self.cmd,
@@ -95,7 +101,12 @@ def create_service(self,
 
 class EnterpriseSpringCloud(DefaultSpringCloud):
     def before_create(self, **_):
-        pass
+        _check_spring_instance_existed(self.cmd,
+                                       self.client,
+                                       self.resource_group,
+                                       self.name,
+                                       self.location,
+                                       **_)
 
     def after_create(self, no_wait=None, **kwargs):
         pollers = [