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org.apache.spark.sql.rapids.test

GetJsonObjectMask

object GetJsonObjectMask

Used to mask customer data to avoid customer data leakage.

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  12. def mask(seed: Long, pathStr: String, jsonStr: String, cpuResult: String, gpuResult: String): Array[String]

    Mask data.

    Mask data. RAPIDS Accelerator should not dump the original Customer data. This dump tool only care about the functionality of get-json-object, the masked data should reproduce issues if original data/path can reproduce issues. The mask is to find a way to mask data and reproduce issues by using masked data.

    Special/retain chars, the following chars will not be masked: ASCII chars [0, 31] including space char { } [ ] , : " ' : JSON structure chars, should not mask \ : escape char, should not mask / b f n r t u : can follow \, should not mask

    • : used by number, should not mask 0-9 : used by number, it's special char, mask method refers to the following e E : used by number, e.g.: 1.0E-3, should not mask u A-F a-f : used by JSON string by unicode, e.g.: ḯ true : should not mask false : should not mask null : should not mask $ [ ] . * ' : used by path, should not mask ? : json path supports although Spark does not support, also add this because has no side effect Above special/retain chars should not be masked, or the JSON will be invalid.

    Mask logic:

    • Assume path only contains a-z, A-Z, '_' and [0-9]
    • For digits [1-9] create a random one to one mapping and replace, note do not touch '0' Because 00 number is invalid.
    • For above special/retain chars do not change
    • For char set [a-z, A-Z] minus special/retain chars like [eE1-9], create a random one to one mapping to mask data. e.g.: a -> b, b -> c, ..., z -> a
    • For other chars, e.g.: Chinese chars, map to a const char 's'
    returns

    masked data

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