Error of Generated Python Source Connector

[ming]

• Is this your first time deploying Airbyte?: No
• OS Version / Instance: CentOS7
• Memory / Disk: 32Gb / 2 Tb
• Deployment: Are you using Docker or Kubernetes deployment? Yes
• Airbyte Version: latest
• Source name/version: python source
• Step: The issue is happening during creating the connection or a new source?
• Description:
  Hi, I got an error when I run python main.py discover using the system generated python source generator. I used to follow the steps in the DOC successfully, but now it suddenly doesn’t work. These are my commands:
  cd airbyte-integrations/connector-templates/generator
  ./generate.sh
  cd …/…/connectors/source-test
  python -m venv .venv
  source .venv/bin/activate
  pip install -r requirements.txt
  python main.py spec
  python main.py check --config secrets/config.json
  python main.py discover --config secrets/config.json

(.venv) [root@cent7 source-test]# python main.py discover --config secrets/config.json
{"type": "LOG", "log": {"level": "FATAL", "message": "1 validation error for AirbyteStream\nsupported_sync_modes\n  field required (type=value_error.missing)\nTraceback (most recent call last):\n  File \"/home/airbyte/airbyte-integrations/connectors/source-test/main.py\", line 13, in <module>\n    launch(source, sys.argv[1:])\n  File \"/home/airbyte/airbyte-integrations/connectors/source-test/.venv/lib/python3.9/site-packages/airbyte_cdk/entrypoint.py\", line 123, in launch\n    for message in source_entrypoint.run(parsed_args):\n  File \"/home/airbyte/airbyte-integrations/connectors/source-test/.venv/lib/python3.9/site-packages/airbyte_cdk/entrypoint.py\", line 108, in run\n    catalog = self.source.discover(self.logger, config)\n  File \"/home/airbyte/airbyte-integrations/connectors/source-test/source_test/source.py\", line 72, in discover\n    streams.append(AirbyteStream(name=stream_name, json_schema=json_schema))\n  File \"pydantic/main.py\", line 341, in pydantic.main.BaseModel.__init__\npydantic.error_wrappers.ValidationError: 1 validation error for AirbyteStream\nsupported_sync_modes\n  field required (type=value_error.missing)"}}
{"type": "TRACE", "trace": {"type": "ERROR", "emitted_at": 1666170866546.541, "error": {"message": "Something went wrong in the connector. See the logs for more details.", "internal_message": "1 validation error for AirbyteStream\nsupported_sync_modes\n  field required (type=value_error.missing)", "stack_trace": "Traceback (most recent call last):\n  File \"/home/airbyte/airbyte-integrations/connectors/source-test/main.py\", line 13, in <module>\n    launch(source, sys.argv[1:])\n  File \"/home/airbyte/airbyte-integrations/connectors/source-test/.venv/lib/python3.9/site-packages/airbyte_cdk/entrypoint.py\", line 123, in launch\n    for message in source_entrypoint.run(parsed_args):\n  File \"/home/airbyte/airbyte-integrations/connectors/source-test/.venv/lib/python3.9/site-packages/airbyte_cdk/entrypoint.py\", line 108, in run\n    catalog = self.source.discover(self.logger, config)\n  File \"/home/airbyte/airbyte-integrations/connectors/source-test/source_test/source.py\", line 72, in discover\n    streams.append(AirbyteStream(name=stream_name, json_schema=json_schema))\n  File \"pydantic/main.py\", line 341, in pydantic.main.BaseModel.__init__\npydantic.error_wrappers.ValidationError: 1 validation error for AirbyteStream\nsupported_sync_modes\n  field required (type=value_error.missing)\n", "failure_type": "system_error"}}}

When I changed the python env to the previous generator, the above commands all succeeded, but after building the docker image, I still have the same problem using the docker command to run.

What am I missing?

Thank you.

[marcosmarxm]

Hello there! You are receiving this message because none of your fellow community members has stepped in to respond to your topic post. (If you are a community member and you are reading this response, feel free to jump in if you have the answer!) As a result, the Community Assistance Team has been made aware of this topic and will be investigating and responding as quickly as possible.
Some important considerations that will help your to get your issue solved faster:

• It is best to use our topic creation template; if you haven’t yet, we recommend posting a followup with the requested information. With that information the team will be able to more quickly search for similar issues with connectors and the platform and troubleshoot more quickly your specific question or problem.
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Thank you for your time and attention.
Best,
The Community Assistance Team

[ming]

There is no sync field in the default generated Discover() function, I add these fileds and it worked well.

        supported_sync_modes=['full_refresh', 'incremental']
        source_defined_cursor= True
        default_cursor_field=['date']
        streams.append(AirbyteStream(name=stream_name, json_schema=json_schema,supported_sync_modes=supported_sync_modes,source_defined_cursor=source_defined_cursor,default_cursor_field=default_cursor_field))

[harshith]

Thanks a lot for the update.

[lavData]

Thanks for your update.