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Components 编辑

The Components construct in a StyleBook is considered as the most important section in the StyleBook. In this section, you define the configuration objects that have to be created. Using this construct, you can build one or multiple configuration objects of the same type.

The components construct can use the input provided in the parameters section to adapt the configuration generated by the StyleBook. This is an optional section, although most StyleBooks have a components section.

The following table describes the main attributes of a component.

Attribute	Description
`name`	The name of the component. You can specify an alphanumeric name. The name must begin with an alphabet, and can include extra alphabets, numbers, hyphen (-), or underscore (_).
`description`	A description of the role of this component in the StyleBook.
`type`	The type determines what properties this component provides. Components have two kinds of types: Built-in type: This type is provided by the system and you do not have to define it, for example, the NITRO entity types `lbvserver` or `servicegroup`. When a component has a built-in type attribute, it creates a configuration object of that type on the Citrix ADC. For example, if a component refers to the built-in type `lbvserver`, this component creates a load balancing virtual server on the Citrix ADC instance that is the target of the configuration. Composite type: This type refers to an existing StyleBook that you created and imported into Citrix ADM. When a component has a composite type attribute, it creates all the configuration objects, which are specified in the referenced StyleBook, on the Citrix ADC instance that is the target of the configuration. This enables you to combine multiple StyleBooks where each StyleBook creates a part of the final configuration. For more information about composite StyleBooks, see Create a Composite StyleBook.
`meta-properties`	Meta-properties define the actions to be taken on ADC objects. It can take static or dynamic values as a valid meta-property action. When you specify expressions for a meta-property, it dynamically applies the valid meta-property actions for ADC objects. This attribute can be used in a StyleBook when you want do non-CRUD operations on ADC objects. For more information, see Create a StyleBook to perform non-CRUD operations.
`properties`	The sub-attributes that can be used for a component type attribute. The properties that are valid for a component are dictated by its type. For a built-in type, these are the properties or attributes of the corresponding NITRO object. For a component whose type is another StyleBook, that is, a composite type, the properties correspond to the parameters defined in that StyleBook.

Example:


components:

   -

     name: my-lbvserver-comp

     type: ns::lbvserver

     properties:

        name: $parameters.name

        servicetype: HTTP

        ipv46: $parameters.ip

        port: 80

        lbmethod: $parameters.lb-alg
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In this example, you have defined a component called my-lbvserver-comp. This component is of type ns::lbvserver (a built-in type), where “ns” is the prefix that refers to the namespace netscaler.nitro.config and version 10.5 that you had specified in the import-stylebooks section, and lbvserver is a NITRO resource in this namespace.

The properties in this section include four mandatory and one optional attribute (lbmethod) of the lbvserver resource and allows you to specify values for these attributes. In this example, you are specifying static values for servicetype and port while the name, ipv46, and lbmethod properties get their values from the input parameters. You refer to the parameter names defined in the parameters section by using the $parameters.\<name> notation, for example, $parameters.ip.

To learn more about all the available Citrix ADC NITRO resources and their attributes/properties, see the Citrix ADC NITRO REST API documentation.

Note
You have to use lower case for the attribute names of NITRO resource types (its component properties). Otherwise, the import of a StyleBook will fail.

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