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About the Identity Anonymization Tool


WSO2 Micro Integrator is shipped with the Forget Me tool, which is used for anonymizing personally identifiable information (PII) that are stored in the Micro Integrator. See GDPR Compliance in the WSO2 Micro Integrator for instructions.

The following topics will guide you to use the Identity Anonymization tool in StandAlone mode.

Building the Identity Anonymization tool

The following topics walk you through the process of building the Forget Me tool so that you can run the tool in standalone mode to successfully remove references to a deleted user's identity from one or more WSO2 products.

Before you begin

Before you begin download and install Apache Maven.

  1. Clone the Identity Anonymization Tool repository to a required location.
  2. In the source that you checked out, navigate to identity-anonymization-tool , and run mvn clean install . This downloads all dependencies and builds the tool in your local repository. You can find the file created in the identity-anonymization-tool/components/org.wso2.carbon.privacy.forgetme.tool/target directory.
  3. Unzip the file. This creates the identity-anonymization-tool-SNAPSHOT directory with a directory. The path to the identity-anonymization-tool-SNAPSHOT directory will be referred to as <TOOL_HOME> throughout this section.

    The following table describes the purpose of the most important configuration related directories and files of the tool, which are in the <TOOL_HOME>/conf directory:

    Directory/File name Purpose
    config.json This is the primary configuration file.
    You can configure this file depending on the metadata database tables, access logs, audit logs, or any other log files on which you want the Identity Anonymization tool to run. For information on how to configure this file, see Configuring the primary configuration file .

    This is the default directory where configured datasources are searched for when you run the Identity Anonymization tool.
    If necessary, you can define your own datasource configurations depending on the databases that you want to connect to, and specify the defined datasource configuration location using command line arguments.

    log-config/patterns.xml This file should contain all the regex patterns that can be used to find and replace references to deleted user identities in log file entries.
    sql This directory should include all the SQL files that contain required queries to replace or delete references to deleted user identities.

Configuring the primary configuration file

The primary configuration file of the Identity Anonymization tool is the config.json file. Following is a sample config.json file:

  "processors" : [
    "log-file", "rdbms"
  "directories": [
      "dir": "log-config",
      "type": "log-file",
      "processor" : "log-file",
      "log-file-path" : "logs",
      "log-file-name-regex" : "wso2carbon.log"
      "dir": "sql",
      "type": "rdbms",
      "processor" : "rdbms"
  "extensions": [
      "dir": "datasources",
      "type": "datasource",
      "processor" : "rdbms",
      "properties" : [
        {"identity": "WSO2_CARBON_DB"}

You can configure the following in the config.json file based on your requirement:

  • processors - A list of processors on which you want the tool run. The processors that you can specify are predefined. Possible values are RDBMS and log-file .
  • directories - The definitions of directories on which you want the tool to run. When you specify a directory definition, be sure to either specify the directory path relative to the location of the config.json file, or specify the absolute path to the directory.
  • processor - The type of processor to use to process instructions in the corresponding directory.
  • extensions - The extensions to be initialized prior to starting a processor.

Running the tool

Navigate to the <TOOL_HOME>/bin directory, and execute one of the following commands depending on your operating system:

  • On Linux/Mac OS: ./ -U <username>
  • On Windows: forgetme.bat -U <username>


The commands specified above use only the -U <username> option, which is the only mandatory option to run the tool. There are several other optional command line options that you can specify based on your requirement. The supported options are described in detail below.

Following are details of all possible command line options that you can use when you run the tool:

Command Line Option Description Required Sample Command
U The user name of the user whose identity references you want to remove. Yes

On Linux/Mac OS: ./ -U Sam

On Windows: forgetme.bat -U Sam

d The configuration directory to use when the tool is run.
If you do not specify a value for this option, the default configuration directory of the tool will be used.

On Linux/Mac OS: ./ -U Sam -d <TOOL_HOME>/conf

On Windows: forgetme.bat -U Sam -d <TOOL_HOME>/conf

D The user store domain name of the user whose identity references you want to remove . The default value is PRIMARY . No

On Linux/Mac OS: ./ -U Sam -D Finance-Domain

On Windows: forgetme.bat -U Sam -D Finance-Domain


The pseudonym with which you want to replace references to a deleted user’s identity. If you do not specify a pseudonym when you run the tool, a random UUID value is generated as the pseudonym by default to anonymize references to the deleted user’s identity.

Note that a valid pseudonym can contain the following characters:

  • Uppercase characters {A-Z}

  • Lowercase characters {a-z}
  • Numbers {0-9}

Following is a sample scenario where it is useful to specify a pseudonym:
Let's say you run the tool to replace all references to a particular deleted user’s identity, and then you add the same user back to the system for some reason, and later you want to delete the user again and replace all references to the user with the same pseudonym that was used the first time. To do this you need to specify a pseudonym when you run the tool the first time and ensure that you use that same pseudonym when you run the tool the second time.


On Linux/Mac OS: ./ -U Sam -pu 123-343-435-545-dfd-4

On Windows: forgetme.bat -U Sam -pu 123-343-435-545-dfd-4


The CARBON HOME directory path on which you want to run the tool. You should replace this with the variable $CARBON_HOME used in directories you have configured in the primary configuration file.


On Linux/Mac OS: ./ -U Sam -carbon /usr/bin/wso2is/wso2mi-1.1.0

On Windows: forgetme.bat -U Sam -carbon /usr/bin/wso2is/wso2mi-1.1.0

When you specify the required command line options and run the tool, it generates relevant execution reports with the Report-<PROCESSOR>-<TIMESTAMP>.txt naming convention in your current working directory.