phanikumv commented on code in PR #30618:
URL: https://github.com/apache/airflow/pull/30618#discussion_r1175549494
##########
airflow/providers/google/cloud/triggers/gcs.py:
##########
@@ -97,3 +97,76 @@ async def _object_exists(self, hook: GCSAsyncHook,
bucket_name: str, object_name
if object_response:
return "success"
return "pending"
+
+
+class GCSPrefixBlobTrigger(GCSBlobTrigger):
+ """
+ A trigger that fires and it looks for all the objects in the given bucket
+ which matches the given prefix if not found sleep for certain interval and
checks again.
+
+ :param bucket: the bucket in the google cloud storage where the objects
are residing.
+ :param prefix: The prefix of the blob_names to match in the Google cloud
storage bucket
+ :param google_cloud_conn_id: reference to the Google Connection
+ :param poke_interval: polling period in seconds to check
+ """
+
+ def __init__(
+ self,
+ bucket: str,
+ prefix: str,
+ poke_interval: float,
+ google_cloud_conn_id: str,
+ hook_params: dict[str, Any],
+ ):
+ super().__init__(
+ bucket=bucket,
+ object_name=prefix,
+ poke_interval=poke_interval,
+ google_cloud_conn_id=google_cloud_conn_id,
+ hook_params=hook_params,
+ )
+ self.prefix = prefix
+
+ def serialize(self) -> tuple[str, dict[str, Any]]:
+ """Serializes GCSPrefixBlobTrigger arguments and classpath."""
+ return (
+ "airflow.providers.google.cloud.triggers.gcs.GCSPrefixBlobTrigger",
+ {
+ "bucket": self.bucket,
+ "prefix": self.prefix,
+ "poke_interval": self.poke_interval,
+ "google_cloud_conn_id": self.google_cloud_conn_id,
+ "hook_params": self.hook_params,
+ },
+ )
+
+ async def run(self) -> AsyncIterator["TriggerEvent"]:
+ """Simple loop until the matches are found for the given prefix on the
bucket."""
+ try:
+ hook = self._get_async_hook()
+ while True:
+ res = await self._list_blobs_with_prefix(
+ hook=hook, bucket_name=self.bucket, prefix=self.prefix
+ )
+ if len(res) > 0:
+ yield TriggerEvent(
+ {"status": "success", "message": "Successfully
completed", "matches": res}
+ )
+ await asyncio.sleep(self.poke_interval)
+ except Exception as e:
+ yield TriggerEvent({"status": "error", "message": str(e)})
+ return
+
+ async def _list_blobs_with_prefix(self, hook: GCSAsyncHook, bucket_name:
str, prefix: str) -> list[str]:
+ """
+ Returns list of blobs which matches the given prefix for the given
bucket.
Review Comment:
changed
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