Move hook registration to the init method

Author: cmanallen

sentry_sdk/integrations/launchdarkly.py

@@ -35,19 +35,14 @@ def __init__(self, ld_client=None):
         if not client.is_initialized():
             raise DidNotEnable("LaunchDarkly client is not initialized.")
 
-        self.client = client
+        # Register the flag collection hook with the LD client.
+        client.add_hook(LaunchDarklyHook())
 
     @staticmethod
     def setup_once():
         # type: () -> None
-        integration = sentry_sdk.get_client().get_integration(LaunchDarklyIntegration)
-        if integration is None:
-            raise DidNotEnable("LaunchDarkly client is not initialized.")
-
         scope = sentry_sdk.get_current_scope()
         scope.add_error_processor(flag_error_processor)
-        # Register the flag collection hook with the LD client.
-        integration.client.add_hook(LaunchDarklyHook())
 
 
 class LaunchDarklyHook(Hook):