.. Creative Commons Attribution 4.0 International License.
.. http://creativecommons.org/licenses/by/4.0
-#################
+.. _aai-label:
+
+##########
A&AI Actor
-#################
+##########
.. contents::
:depth: 3
Overview of A&AI Actor
-#############################
+######################
+ONAP Policy Framework enables various actors, several of which require additional
+data to be gathered from A&AI via a REST call. Previously, the request was built,
+and the REST call made, by the application. However, A&AI queries have now been
+implemented using the new Actor framework.
+
+Each operation supported by the actor is associated with its own java class, which is
+responsible for populating the request structure and invoking the REST service. The
+class hierarchy is shown below.
+
+.. image:: classHierarchy.png
+
+Currently, the following operations are supported:
+
+- Tenant
+- Pnf
+- CustomQuery
+
+One thing that sets the A&AI Actor implementation apart from the other Actor
+implementations is that it is typically used to gather data for input to the
+other actors. Consequently, when an A&AI operation completes, it places its
+response into the *properties* field of the *context*, which is passed via the
+*ControlLoopOperationParams*. The names of the keys within the *properties*
+field are typically of the form, "AAI.<operation>.<targetEntity>", where
+"operation" is the name of the operation, and "targetEntity" is the *targetEntity*
+passed via the *ControlLoopOperationParams*. For example, the response for
+the Tenant query for a target entity named "ozVserver" would be stored as a
+*properties* named "AAI.Tenant.ozVserver".
+
+On the other hand, as there is only one "custom query" for a given ONSET, the
+*Custom Query* operation deviates from this, in that it always stores its response
+using the key, "AAI.AaiCqResponse".
+
+
+Request
+#######
+
+Most of the the A&AI operations use "GET" requests and thus do not populate
+a request structure. However, for those that do, the request structure is
+described in the table below.
+
+Note: the Custom Query Operation requires tenant data, thus it performs a *Tenant*
+operation before sending its request. The tenant data is gathered for the vserver
+whose name is found in the "vserver.vserver-name" field of the enrichment data provided
+by DCAE with the ONSET event.
+
++----------------------------------+---------+----------------------------------------------------------------------+
+| Field Name | Type | Description |
++----------------------------------+---------+----------------------------------------------------------------------+
++----------------------------------+---------+----------------------------------------------------------------------+
+| Custom Query: | | |
++----------------------------------+---------+----------------------------------------------------------------------+
+| *start* | string | Extracted from the *result-data[0].resource-link* field of the |
+| | | Tenant query response. |
++----------------------------------+---------+----------------------------------------------------------------------+
+
+
+Examples
+########
+
+Suppose the *ControlLoopOperationParams* were populated as follows, with the tenant
+query having already been performed:
+
+.. code-block:: bash
+
+ {
+ "actor": "AAI",
+ "operation": "CustomQuery",
+ "context": {
+ "enrichment": {
+ "vserver.vserver-name": "Ete_vFWCLvFWSNK_7ba1fbde_0"
+ },
+ "properties": {
+ "AAI.Tenant.Ete_vFWCLvFWSNK_7ba1fbde_0": {
+ "result-data": [
+ {
+ "resource-type": "vserver",
+ "resource-link": "/aai/v15/cloud-infrastructure/cloud-regions/cloud-region/CloudOwner/RegionOne/tenants/tenant/3f2aaef74ecb4b19b35e26d0849fe9a2/vservers/vserver/6c3b3714-e36c-45af-9f16-7d3a73d99497"
+ }
+ ]
+ }
+ }
+ }
+ }
+
+An example of a Custom Query request constructed by the actor using the above
+parameters, sent to the A&AI REST server:
+
+.. code-block:: bash
+
+ {
+ "start": "/aai/v15/cloud-infrastructure/cloud-regions/cloud-region/CloudOwner/RegionOne/tenants/tenant/3f2aaef74ecb4b19b35e26d0849fe9a2/vservers/vserver/6c3b3714-e36c-45af-9f16-7d3a73d99497",
+ "query": "query/closed-loop"
+ }
+
+
+An example response received from the A&AI REST service:
+
+.. code-block:: bash
+
+ {
+ "results": [
+ {
+ "vserver": {
+ "vserver-id": "f953c499-4b1e-426b-8c6d-e9e9f1fc730f",
+ "vserver-name": "Ete_vFWCLvFWSNK_7ba1fbde_0",
+ "vserver-name2": "Ete_vFWCLvFWSNK_7ba1fbde_0",
+ "prov-status": "ACTIVE",
+ "vserver-selflink": "http://10.12.25.2:8774/v2.1/41d6d38489bd40b09ea8a6b6b852dcbd/servers/f953c499-4b1e-426b-8c6d-e9e9f1fc730f",
+ "in-maint": false,
+ "is-closed-loop-disabled": false,
+ ...
+ }
+
+
+Configuration of the A&AI Actor
+###############################
+
+The following table specifies the fields that should be provided to configure the A&AI
+actor.
+
+=============================== ==================== ==================================================================
+Field name type Description
+=============================== ==================== ==================================================================
+clientName string Name of the HTTP client to use to send the request to the
+ A&AI REST server.
+timeoutSec integer (optional) Maximum time, in seconds, to wait for a response to be received
+ from the REST server. Defaults to 90s.
+path string URI appended to the URL. This field only applies to individual
+ operations; it does not apply at the actor level. Note: the
+ *path* should not include a leading or trailing slash.
+=============================== ==================== ==================================================================
-This is a place-holder for the actor documentation.
+The individual operations are configured using these same field names. However, all
+of them, except the *path*, are optional, as they inherit their values from the
+corresponding actor-level fields.
Code Review / policy / parent.git / commitdiff
