136 lines
2.9 KiB
PHP
136 lines
2.9 KiB
PHP
======
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Traits
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======
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Traits are *qualitative* characteristics of resource providers.
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The classic example for traits can be requesting disk from different
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providers: a user may request 80GB of disk space for an instance
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(quantitative), but may also expect that the disk be SSD instead of
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spinning disk (qualitative). Traits provide a way to mark that a
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storage provider is SSD or spinning.
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.. note:: Traits API requests are availiable starting from version 1.6.
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List traits
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===========
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Return a list of valid trait strings according to parameters specified.
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.. rest_method:: GET /traits
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Normal Response Codes: 200
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Request
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-------
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Several query parameters are available to filter the returned list of
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traits. If multiple different parameters are provided, the results
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of all filters are merged with a boolean `AND`.
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.. rest_parameters:: parameters.yaml
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- name: trait_name_query
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- associated: trait_associated
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Response
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--------
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.. rest_parameters:: parameters.yaml
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- traits: traits
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Response Example
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----------------
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.. literalinclude:: get-traits.json
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:language: javascript
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Show traits
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===========
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Check if a trait name exists in this cloud.
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.. rest_method:: GET /traits/{name}
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Normal Response Codes: 204
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Error response codes: itemNotFound(404)
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Request
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-------
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.. rest_parameters:: parameters.yaml
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- name: trait_name
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Response
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--------
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No body content is returned on a successful GET.
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Update traits
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=============
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Insert a new custom trait. If traits already exists 204 will be returned.
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There are two kinds of traits: the standard traits and the custom traits.
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The standard traits are interoperable across different OpenStack cloud
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deployments. The definition of standard traits comes from the `os-traits`
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library. The standard traits are read-only in the placement API which means
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that the user can't modify any standard traits through API.
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The custom traits are used by admin users to manage the non-standard
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qualitative information of resource providers.
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.. rest_method:: PUT /traits/{name}
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Normal Response Codes: 201, 204
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Error response codes: badRequest(400)
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* `400 BadRequest` if trait name is not prefixed with `CUSTOM_` prefix.
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Request
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-------
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.. rest_parameters:: parameters.yaml
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- name: trait_name
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Response
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--------
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.. rest_parameters:: parameters.yaml
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- Location: location
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No body content is returned on a successful PUT.
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Delete traits
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=============
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Delete the trait specified be `{name}`. Note that only custom traits can be
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deleted.
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.. rest_method:: DELETE /traits/{name}
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Normal Response Codes: 204
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Error response codes: badRequest(400), itemNotFound(404), conflict(409)
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* `400 BadRequest` if the name to delete is standard trait.
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* `404 Not Found` if no such trait exists.
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* `409 Conflict` if the name to delete has associations with any
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ResourceProvider.
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Request
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-------
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.. rest_parameters:: parameters.yaml
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- name: trait_name
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Response
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--------
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No body content is returned on a successful DELETE.
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