Overview
This filter type hides (or masks) specific data, based on the configured regex pattern.
This filter type can be useful to hide sensitive data, such as phone numbers, social security numbers, credit card numbers, etc. Specifically, based on the configured regex pattern, this filter type changes the log lines to hide the matched content.
Review Parameters
Review the following parameters that you can configure in the Edge Delta App:
| Visual Editor | YAML | Description |
| Name | name |
Enter a descriptive name for this filter. When you create a workflow, you will use this label to enter your filter into the workflow. This parameter is required. Review the following example: mask_email |
| Type | type |
Select (or enter) mask. This parameter is required. Review the following example: type: mask |
| Predefined Pattern | predefined_pattern |
Instead of a custom pattern, you can use a common, predefined pattern, such as credit_card and us_phone_dash. You must configure the pattern parameter or the predefined_pattern parameter. This parameter is optional. Review the following example: predefined_pattern: credit_card |
| Pattern | pattern |
Enter a regular expression pattern to define which strings to match for. You must configure the pattern parameter or the predefined_pattern parameter. This parameter is optional. Review the following example: pattern: 'email:\s*(?P<email>\w+) |
| Mask | mask |
Enter the string to be used as the replacement for the matched part of the log. The default mask is ******. If you specify an empty mask ( "" ), then the filter will remove the matched pattern from the log. This parameter is optional. Review the following example: mask: 'XXXXX' |
| Mask Capture Group | mask_captured |
This parameter supports capture groups for regex masks. In other words, you can replace any match of a capture group with a given map. To replace all matches (not submatch), you can use the all keyword. This parameter is optional. Review the following example: mask_captured: email: '******' |
Review Sample Configuration
The following example displays a filter that replaces password: SOME_PASSWORD with password: ******:
- name: mask_password
type: mask
pattern: "password:\s*\w+"
mask: "password: ******"
- name: mask_email
type: mask
pattern: "email:\s*(?P<email>\w+)"
mask_captured:
email: '******'
Instead of a custom pattern, you can also use a common, predefined pattern, such as credit_card and us_phone_dash.
The following example displays a filter that masks US phone numbers:
- name: mask_phone
type: mask
predefined_pattern: us_phone_dash
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