TimKleinlein opened a new issue, #28326:
URL: https://github.com/apache/beam/issues/28326
### What happened?
### Problem description
The function `apache_beam.io.gcp.pubsublite.ReadFromPubSubLite` is not
working. This can be seen as a simple data processing pipeline for reading
messages from a Google Cloud Pub/Sub Lite subscription and logging the
messages' content is not working for `apache-beam=2.50.0` and
`google-cloud-pubsublite=1.8.3`.
### Code to reproduce issue
This is the Python file defining the pipeline:
```
import logging
import apache_beam
from apache_beam.io.gcp import pubsublite
from apache_beam import Pipeline
from apache_beam.options.pipeline_options import PipelineOptions
def run(pipeline_args=None):
pipeline_options = PipelineOptions(
pipeline_args, streaming=True, save_main_session=False
)
with Pipeline(options=pipeline_options) as pipeline:
elements = (
pipeline
| "Read from Pub/Sub" >>
pubsublite.ReadFromPubSubLite(subscription_path="projects/<PROJECT_ID>/locations/<LOCATION>/subscriptions/<SUBSCRIPTION_NAME>")
| "Print Elements" >> apache_beam.Map(lambda x:
logging.info(x.getMessage()) or x)
)
if __name__ == "__main__":
logging.getLogger().setLevel(logging.INFO)
run()
```
When running the pipeline locally the only logs printed are the following:
```
INFO:root:severity: INFO
timestamp {
seconds: 1694002848
nanos: 949000000
}
message: "Fn Harness started"
log_location: "org.apache.beam.fn.harness.FnHarness"
thread: "1"
INFO:root:severity: INFO
timestamp {
seconds: 1694002849
nanos: 579000000
}
message: "Entering instruction processing loop"
log_location: "org.apache.beam.fn.harness.FnHarness"
thread: "1"
```
Now I post a message on the Pub/Sub Lite topic the subscription has
subscribed:
`gcloud pubsub lite-topics publish <TOPIC_NAME> --location <LOCATION>
--project=<PROJECT_ID> --message="Hello world"`
This message is not printed despite the pipeline process still running.
### Issue Priority
Priority: 1 (data loss / total loss of function)
### Issue Components
- [X] Component: Python SDK
- [ ] Component: Java SDK
- [ ] Component: Go SDK
- [ ] Component: Typescript SDK
- [ ] Component: IO connector
- [ ] Component: Beam examples
- [ ] Component: Beam playground
- [ ] Component: Beam katas
- [ ] Component: Website
- [ ] Component: Spark Runner
- [ ] Component: Flink Runner
- [ ] Component: Samza Runner
- [ ] Component: Twister2 Runner
- [ ] Component: Hazelcast Jet Runner
- [ ] Component: Google Cloud Dataflow Runner
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