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trait RestAPIUtils extends AnyRef

Spark utilities for handling rest api connections.

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UDFUtils
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  5. lazy val call_rest_api: UserDefinedFunction

    Spark UDF that makes a single blocking rest API call to a given url.

    Spark UDF that makes a single blocking rest API call to a given url. The result of this udf is always produced, contains a proper error if it failed at any stage, and never interrupts the job execution (unless called with invalid signature).

    The default timeout can be configured through the spark.network.timeout Spark configuration option.

    Parameters:

    • method - any supported HTTP1.1 method type, e.g. POST, GET. Complete list: [httpMethods].
    • url - valid url to which a request is going to be made
    • headers - an array of "key: value" headers that are past with the request
    • content - any content (by default, the supported rest api content type is application/json)

    Response - a struct with the following fields:

    • isSuccess - boolean, whether a successful response has been received
    • status - nullable integer, status code (e.g. 404, 200, etc)
    • headers - an array of name: value response headers (e.g. [Server: akka-http/10.1.10, Date: Tue, 07 Sep 2021 18:11:47 GMT])
    • content - nullable string, response back
    • error - nullable string, if the parameters passed are valid or the system failed to make a call, this field contains an error message
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