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Templates
=========
An Orchestration template is a JSON or YAML document that describes how
a set of resources should be assembled to produce a working deployment
(known as a `stack <#stacks>`__). The template specifies the resources
to use, the attributes of these resources that are parameterized and the
information that is sent to the user when a template is instantiated.
Validating templates
--------------------
Before you use a template to create a stack, you might want to validate it.
Validate a template from a file
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
If your template is stored on your local computer as a JSON or YAML
file, you can validate it as shown in the following example:
.. code-block:: php
use OpenCloud\Common\Exceptions\InvalidTemplateError;
try {
$orchestrationService->validateTemplate(array(
'template' => file_get_contents(__DIR__ . '/lamp.yaml')
));
} catch (InvalidTemplateError $e) {
// Use $e->getMessage() for explanation of why template is invalid
}
`Get the executable PHP script for this example <https://raw.githubusercontent.com/rackspace/php-opencloud/master/samples/Orchestration/validate-template-from-template-url.php>`_
Validate Template from URL
~~~~~~~~~~~~~~~~~~~~~~~~~~
If your template is stored as a JSON or YAML file in a remote location
accessible via HTTP or HTTPS, you can validate it as shown in the
following example:
.. code-block:: php
use OpenCloud\Common\Exceptions\InvalidTemplateError;
try {
$orchestrationService->validateTemplate(array(
'templateUrl' => 'https://raw.githubusercontent.com/rackspace-orchestration-templates/lamp/master/lamp.yaml'
));
} catch (InvalidTemplateError $e) {
// Use $e->getMessage() for explanation of why template is invalid
}
`Get the executable PHP script for this example <https://raw.githubusercontent.com/rackspace/php-opencloud/master/samples/Orchestration/validate-template-from-template-url.php>`_
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