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Pass `AssetStateStoreAccessors` into `response_check_path` Callable in `HttpEventTrigger`
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上游 issue 正文
### Description
In this example (https://airflow.apache.org/docs/apache-airflow-providers-http/stable/triggers.html), the `asgiref.sync.sync_to_async` function is used in tandem with `Variable.get/set` to retrieve and persist data used in `response_check_path`. It looks a bit like this:
```python
...
async def check_github_api_response(response):
data = response.json()
release_id = str(data["id"])
# Using async Variable.get
get_variable_sync = sync_to_async(Variable.get)
previous_release_id = await get_variable_sync(key="release_id_var", default=None)
if release_id == previous_release_id:
return False
release_name = data["name"]
release_html_url = data["html_url"]
# Using async Variable.set
set_variable_sync = sync_to_async(Variable.set)
await set_variable_sync(key="release_id_var", value=str(release_id))
await set_variable_sync(key="release_name_var", value=release_name)
await set_variable_sync(key="release_html_url_var", value=release_html_url)
return True
...
```
With the work done in AIP-103, `AssetStateStoreAccessors` is available to a `BaseEventTrigger` using the `asset_state_store` attribute. This allows for Triggers to read and persist state for an Asset.
I'd recommend updating the `_run_response_check` method in `HttpEventTrigger` to pass `self.asset_state_store` to the `response_check` function, like this. This would allow for `HttpEventTrigger` users to use the supported tooling to retrieving and persisting data.
```python
...
async def _run_response_check(self, response) -> bool:
"""Run the response_check callable provided by the user."""
response_check = await self._import_from_response_check_path()
if not inspect.iscoroutinefunction(response_check):
raise AirflowException("The response_check callable is not asynchronous.")
check = await response_check(response, self.asset_state_store) # Make the change here
return check
...
```
Permalink: https://github.com/apa…
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