Blueprints
Parametrized flow with custom validators to ensure correct integer value range and Regex-based string pattern validation
Source
yaml
id: regex-input
namespace: company.team
inputs:
- id: age
type: INT
defaults: 42
required: false
min: 18
max: 64
- id: user
type: STRING
defaults: student
required: false
validator: ^student(\d+)?$
tasks:
- id: validator
type: io.kestra.plugin.core.log.Log
message: User {{ inputs.user }}, age {{ inputs.age }}
About this blueprint
Inputs
This flow uses several input validators.
The age property must be within a valid range between min and max integer value.
The Regex expression ^student(\d+)?$ is used to validate that the input argument user is of type STRING and that it follows a given pattern:
^: Asserts the start of the string. -student: Matches the word "student". -\d: Matches any digit (0-9). -+: Asserts that there is one or more of the preceding token (i.e., one or more digits). -()?: The parentheses group the digits together, and the question mark makes the entire group optional. -$: Asserts the end of the string. This ensures that the string doesn't contain any characters after the optional digits. With this pattern: - "student" would be a match. - "student123" would be a match. - "studentabc" would not be a match because "abc" isn't a sequence of digits. Try running this flow with various inputs or adjust the Regex pattern to see how the input validation works.
More Related Blueprints