copr: wait until Pulp publication is finished

backend/copr_backend/pulp.py

@@ -3,6 +3,7 @@
 """
 
 import os
+import time
 import tomllib
 from urllib.parse import urlencode
 import requests
@@ -227,3 +228,18 @@ def get_latest_repository_version(self, name):
 
         response = requests.get(url, **self.request_params)
         return response.json()["results"][0]["pulp_href"]
+
+    def wait_for_finished_task(self, task):
+        """
+        Pulp task (e.g. creating a publication) can be running for an
+        unpredictably long time. We need to wait until it is finished to know
+        what it actually did.
+        """
+        while True:
+            response = self.get_task(task)
+            if not response.ok:
+                break
+            if response.json()["state"] != "waiting":
+                break
+            time.sleep(5)
+        return response

backend/copr_backend/storage.py

@@ -241,7 +241,7 @@ def publish_repository(self, chroot, **kwargs):
             return False
 
         task = response.json()["task"]
-        response = self.client.get_task(task)
+        response = self.client.wait_for_finished_task(task)
         if not response.ok:
             self.log.error("Failed to get Pulp task %s because of %s",
                            task, response.text)