Data Masker

Description

Data masker takes databases and masks sensitive information. You will produce a command line tool that takes as arguments:

• a path to a json file of data
• a path to a file containing a json array of strings in this format: "k:" OR "v:"
  • The first part refers to whether the regex should match the key "k" or the value "v".
    • If the key is used for matching (e.g. k:^Foo), replace values with strings of the same length but consisting of * only, where the key in the data file matches the regex pattern.
    • If the value is used for matching (e.g. v:^bar$), replace the parts of the values that match the regex pattern with strings of the same length but consisting of * only.

The program will be called on the command line like this:

./gradlew clean fatJar
java -jar build/libs/Data-Maker-1.0-SNAPSHOT-all.jar ./TestData/people.json ./TestData/a.rules.json

Example

java -jar build/libs/Data-Maker-1.0-SNAPSHOT-all.jar ./TestData/people.json ./TestData/b.rules.json produces:

[
  {
    "Name": "****",
    "Email": "****@example.com"
  },
  {
    "Name": "*******",
    "Email": "*******@redgate.com"
  }
]

while people.json (data file) is:

[
  {
    "Name": "Jack",
    "Email": "[email protected]"
  },
  {
    "Name": "Bethany",
    "Email": "[email protected]"
  }
]

and b.rules.json (rule file) is:

[
  "k:Name",
  "v:^\\w+(?=@\\w+\\.com$)"
]