When adding a build parameter (system property, environment variable or configuration parameter), you can extend its definition with a specification that will regulate parameter's control presentation and validation.
This specification is the parameter's "meta" information that is used to display the parameter in the Run Custom Build dialog. It allows making a custom build run more user-friendly and usable by non-developers.
Consider a simple example. You have a build configuration in which you have a monstrous-looking build parameter that regulates if a build has to include a license or not; can be either true or false; and by default is false. It may be clear for a build engineer, which build parameter regulates license generation and which value it is to have, but it may not be obvious to a regular user.
Using the build parameter's specification you can make your parameters more readable in the Run Custom Build dialog.
On this page:
To add specification to a build parameter, click the Edit button in the Spec area when editing/adding a build parameter.
All parameters specifications support a number of common properties, such as:
The table below provides more details on each control type.
The default. Represents a usual text string without any extra handling
True/false option represented by a check box
"Select one" or "select many" control to set the value to one of predefined settings
This is designed to store passwords or other secure data in TeamCity settings. TeamCity makes the value of the password parameter never appear in the TeamCity Web UI: it affects the settings screens and the Run Custom Build dialog where password fields appear. Also, the value is replaced in the build's Parameters tab and build log. The value is stored scrambled in the configuration files under TeamCity Data Directory. Please note that build log value hiding is implemented with simple search-and-replace, so if you have a trivial password of "123", all occurrences of "123" will be replaced, potentially exposing the password.
Depending on the specification's type, there are additional settings.
Allowed value - choose the allowed value. For the Regex option, specify Pattern, a Java-style regular expression to validate the field value, as well as a validation message.
Checked value/Unchecked value: Specify values for the parameter to have depending on the checkbox's state.
Check the Allow multiple box to enable multiple selection. In the Items field specify a newline-separated list of items. Use following syntax
Alternatively, you can manually configure a specification using specially formatted string with syntax similar to the one used in service messages (
For example, for text:
text label='some label' regex='some pattern'.
If you start editing a parameter that has a specification, you can see a link to its raw value in the "Edit parameter" dialog. Click it to view the specification in its raw form (in the service message format). To use this specification in another build configuration, just copy it from here, and paste in another configuration.
You can also view/edit typed parameters specification via REST API.
Administrator's Guide: Configuring Build Parameters | Defining and Using Build Parameters in Build Configuration | Predefined Build Parameters