How can I execute the exact same api call once aga...
# replication-ask-ai
k
How can I execute the exact same api call once again in an httpStream? Basically my api endpoint creates a csv-file that is accessible via a url the api returns. at the first call the staus is "in progress" so the csv is still being created. When I call the api a second time (e.g. via postman) the status is changed to "done" an the endpoint returns an url
k
To execute the same API call again in an
HTTPStream
, you can use the retry mechanism provided by the Airbyte CDK. By default, the CDK will conduct exponential backoff on the HTTP code 429 and any 5XX exceptions, and fail after 5 tries. This retry mechanism is governed by the
should_retry
and the
backoff_time
methods. You can override these methods to customize the retry behavior according to your needs. In your case, you can customize the
should_retry
method to retry the request when the status is "in progress". Here's a pseudo-code example:
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python def should_retry(self, response: requests.Response) -> bool:     # Parse the response     parsed_response = self.parse_response(response)     # Check if the status is "in progress"     if parsed_response['status'] == 'in progress':         return True     return False
Please note that this is a pseudo-code example and you might need to adjust it according to your actual API response structure. For more information, you can refer to the [Airbyte documentation on HTTP Streams](https://docs.airbyte.com/connector-development/cdk-python/http-streams).
To execute the same API call again in an
HTTPStream
, you can use the
should_retry
method provided by the Airbyte CDK. This method is used to determine whether the API call should be retried based on the response. By default, the CDK will conduct exponential backoff on HTTP code 429 and any 5XX exceptions, and fail after 5 tries. However, you can override this method to customize the retry behavior based on your specific use case. In your case, you can check the status of the response in the
should_retry
method. If the status is "in progress", you can return
True
to retry the API call. Once the status changes to "done", you can return
False
to stop retrying. Here is an example of how you might implement this, based on the information provided in the extracts:
Copy code
python def should_retry(self, response: requests.Response) -> bool:     """     This method is called whenever a request returns a response that is not a 2xx status. If this method returns true,      then the request is retried. If it returns false, then the response is returned as is and processing continues as      usual.     """     # Parse the response to check the status     status = response.json().get('status')          # Retry the API call if the status is "in progress"     if status == 'in progress':         return True      # Do not retry the API call if the status is "done"     elif status == 'done':         return False      # Default retry behavior for other status codes     else:         return 429 <= response.status_code < 500
Please note that this is a simplified example and you might need to adjust it based on the specifics of your API. For more information on how to work with HTTP streams in Airbyte, you can refer to the [HTTP Streams documentation](https://docs.airbyte.com/connector-development/cdk-python/http-streams).
k
@kapa.ai is it possible for my custom source to return that csv-file? Pandas can read that file but how do I return it in my HttpStream?
k
Yes, it is possible for your custom source to return a CSV file. You can use the
HTTPStream
object provided by the Airbyte CDK to handle HTTP APIs. The
HTTPStream
requires a URL to perform the request and instructions on how to parse the resulting response. The
parse_response
function instructs the stream how to parse the API response. This returns an
Iterable
, whose elements are each later transformed into an
AirbyteRecordMessage
. API routes whose response contains a single record generally have a
parse_response
function that return a list of just that one response. Routes that return a list, usually have a
parse_response
function that return the received list with all elements. The
HTTPStream
must describe the schema of the records it outputs using JsonSchema. The simplest way to do this is by placing a
.json
file per stream in the
schemas
directory in the generated python module. The name of the
.json
file must match the lower snake case name of the corresponding Stream. You can also dynamically set your schema. For more information, you can refer to the [schema docs](https://docs.airbyte.com/connector-development/cdk-python/full-refresh-stream#defining-the-streams-schema). For more details, you can refer to the [HTTP Streams documentation](https://docs.airbyte.com/connector-development/cdk-python/http-streams).