[GitHub] [pulsar] gkimes opened a new issue, #16555: Python PulsarClient::create_reader() doesn't accept MessageId instance

[GitBox <gi...@apache.org>]

gkimes opened a new issue, #16555:
URL: https://github.com/apache/pulsar/issues/16555

   Python pulsar-client package
   
   **Describe the bug**
   Attempting to provide the function `PulsarClient::create_reader()` with the param `start_message_id` as an instance of `pulsar.MessageId` raises an error. It only accepts a `_pulsar.MessageId`, which is the [internal implementation of MessageId](https://github.com/apache/pulsar/blob/master/pulsar-client-cpp/python/pulsar/__init__.py#L123). 
   
   **To Reproduce**
   
   ```python
       import pulsar 
       
       pulsar_client = pulsar.Client(
           PULSAR_URL,
           authentication=pulsar.AuthenticationToken(PULSAR_TOKEN),
       )
       message_id = pulsar.MessageId(ledger_id=LEDGER_ID, entry_id=ENTRY_ID)
       pulsar_client.create_reader(TOPIC, message_id)
   ```
   
   ```
   Traceback (most recent call last):
       ... # my code
       pulsar_client.create_reader(TOPIC, message_id)
     File "/opt/conda/envs/base/lib/python3.8/site-packages/pulsar/__init__.py", line 825, in create_reader
       _check_type(_pulsar.MessageId, start_message_id, 'start_message_id')
     File "/opt/conda/envs/base/lib/python3.8/site-packages/pulsar/__init__.py", line 1338, in _check_type
       raise ValueError("Argument %s is expected to be of type '%s' and not '%s'"
   ValueError: Argument start_message_id is expected to be of type 'MessageId' and not 'MessageId'
   ```
   
   **Expected behavior**
   Should allow a `pulsar.MessageId` instance to be provided. Current workaround is to either access the private property `message_id._msg_id`, or serialize & deserialize to get a _pulsar.MessageId instance. 
   
   [Here is the line that performs the instance check and throws the error.](https://github.com/apache/pulsar/blob/master/pulsar-client-cpp/python/pulsar/__init__.py#L834)
   
   **Versions**
   - pulsar-client==2.10.0
   - Python 3.8.13
   
   


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[GitHub] [pulsar] github-actions[bot] commented on issue #16555: Python PulsarClient::create_reader() doesn't accept MessageId instance

[GitBox <gi...@apache.org>]

github-actions[bot] commented on issue #16555:
URL: https://github.com/apache/pulsar/issues/16555#issuecomment-1212663931

   The issue had no activity for 30 days, mark with Stale label.


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