I've got a HttpStream (Task_id) that returns 5 id's that are read as records, now I need to access them in an HttpSubStream (Result). How do I set up an HttpSubStream?

To set up an

HttpSubStream

, you need to inherit your child stream class from the

HttpSubStream

class. This class is designed to handle streams that depend on the results of another stream. Here's a basic example of how you might set up an `HttpSubStream`:

python class TaskId(HttpStream):    ...      class Result(HttpSubStream):    ...

In this example,

TaskId

is the parent stream and

Result

is the child stream. The

HttpSubStream

class overrides the

stream_slices

method that returns a generator of all parent entries. Each record of the parent stream (

TaskId

in this case) is used as a partition for the current stream (

Result

). You can also enable caching in the parent/child relationship to optimize the data fetching process. This is especially useful when dealing with streams that depend on the results of another stream. To enable caching, you need to override the

use_cache

property of the

HttpStream

class to return

True

. Here's how you might do it:

python class TaskId(HttpStream):    ...       @property    def use_cache(self) -> bool:    return True      class Result(HttpSubStream):    ...

In this example, the

use_cache

property is overridden in the

TaskId

stream to enable caching. For more detailed information, you can refer to the [Airbyte documentation on HTTP Streams](https://docs.airbyte.com/connector-development/cdk-python/http-streams).

@kapa.ai right now I've got the following:

class Result(HttpSubStream):

    url_base = None
    primary_key = None
    authenticator = None

    def __init__(self, parent_stream: HttpStream):
        self.parent = parent_stream
        self.url_base = parent_stream.url_base
        self.auth = parent_stream.auth
        self.task_ids = self.parent.read_records(SyncMode.full_refresh)

    def next_page_token(self, response: requests.Response) -> Optional[Mapping[str, Any]]:
        return None
    
    def next_page_token(self, response: requests.Response) -> Optional[Mapping[str, Any]]:
        if len(self.task_ids) == 1:
            return None
        else:
            return {"next": self.task_ids.pop(0)}

    def stream_slices(self, **kwargs) -> Iterable[Optional[Mapping[str, Any]]]:
        task_ids = self.parent.read_records(SyncMode.full_refresh)
        for task_id in task_ids:
            print(task_id)
            yield task_id

    def path(self, stream_slice: Mapping[str, Any], **kwargs) -> Optional[Mapping[str, Any]]:
        return None
    
    def request_body_json(self, stream_state: Mapping[str, Any] | None, stream_slice: Mapping[str, Any] | None = None, next_page_token: Mapping[str, Any] | None = None) -> Mapping[str, Any] | None:
        return {"auth": self.auth, "task_id": self.task_ids[0]}
        # return super().request_body_json(stream_state, stream_slice, next_page_token)

    def parse_response(self, response: requests.Response, **kwargs) -> Iterable[Mapping]:
        res = response.json()
        if response.status_code == 200:
            yield res
        elif response.status_code == 404:
            return []

Based on the code you've provided, it seems like you're trying to implement a substream in Airbyte using the Python CDK. Here are a few suggestions based on the information provided in the extracts: 1.

url_base

,

primary_key

, and

authenticator

are not required to be

None

in the

Result

class. They are inherited from the parent stream as you've done in the

__init__

method. 2. You have two

next_page_token

methods. You should only have one. The

next_page_token

method is used to handle pagination. If your API does not support pagination, you can simply return

None

. 3. In the

stream_slices

method, you're reading records from the parent stream. This is typically where you'd define the slices of data to be retrieved. For example, if you're dealing with time-series data, each slice could be a day of data. 4. The

path

method should return the API endpoint that you want to hit. It seems like you're returning

None

which might not be correct unless your API's endpoint is indeed at the base URL. 5. In the

request_body_json

method, you're returning a dictionary with "auth" and "task_id". This method is used to define any additional parameters or body data that should be sent with the HTTP request. If "auth" and "task_id" are required for your API requests, this implementation seems correct. 6. The

parse_response

method is used to parse the API response and yield each record. Your implementation seems to be correct, assuming that the entire response is a single record. Here's a general example of a substream implementation from the extracts:

python class UserNumbers(HttpSubStream, AircallStream):     parent: object = Users     primary_key = ""      def path(         self, stream_state: Mapping[str, Any] = None, stream_slice: Mapping[str, Any] = None, next_page_token: Mapping[str, Any] = None     ) -> str:         user_id = stream_slice["id"]         return f"users/{user_id}"          def stream_slices(self, **kwargs) -> Iterable[Optional[Mapping[str, any]]]:         users_stream = Users(**kwargs)         for user in users_stream.read_records(sync_mode=SyncMode.full_refresh):             return {"user_id": user["id"]}          def next_page_token(self, response: requests.Response) -> Optional[Mapping[str, Any]]:         return None

This is a simplified example and might not cover all your use cases. You might need to adjust it based on your specific API's requirements. For more information, you can refer to the [Airbyte Documentation](https://docs.airbyte.com/connector-development/cdk-python/http-streams) and [Tutorials](https://airbyte.io/tutorials).

@kapa.ai getting the error: "'NoneType' object has no attribute 'get_auth_header'

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@kapa.ai getting the error:

super().__init__(**kwargs)\nTypeError: HttpSubStream.__init__() missing 1 required positional argument: 'parent'

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@kapa.ai Right now my code looks like this:

class Result(HttpSubStream):

    def __init__(self, parent: HttpStream, **kwargs):
        super().__init__(**kwargs)
        self.parent = parent

class SourcePwExportSegment(AbstractSource):

    def streams(self, config: Mapping[str, Any]) -> List[Stream]:
        task_id_stream = Task_id(config = config)
        return [task_id_stream, Result(parent = task_id_stream)]

class Task_id(HttpStream):

    def __init__(self, config: Mapping[str, Any], **kwargs):
        super().__init__(**kwargs)

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