Create apicrud.rst

basic information around using POST operations for create, read, update, delete operations with the API.
worked examples using the Trafficshaper API endpoint, curl syntax.

source/development/how-tos/apicrud.rst

@@ -0,0 +1,91 @@
+===============================
+Use the API for CRUD Operations
+===============================
+
+
+Overview
+--------
+
+There are several components which have API capabilities which allow for Create, Read, Update, Delete (CRUD) operations.
+The following code examples detail how CRUD operations are used to configure the TrafficShaper pipe object
+
+Resources
+---------
+API endpoints and supported method resources are located in :doc: `development/api </development/api>`
+
+In each of these pages, links to the xml model reference are provided.
+These are used for creating the JSON payloads for ``POST`` requests.
+
+For the following examples, the following references are used:
+ - API endpoint reference for `Trafficshaper <development/api/core/trafficshaper>`
+ - Model file `Trafficshaper.xml <https://github.com/opnsense/core/blob/master/src/opnsense/mvc/app/models/OPNsense/TrafficShaper/TrafficShaper.xml>`
+
+
+Create a pipe
+-------------
+
+The following JSON blob defines a 2 Mbit pipe, with basic co_del functionality.
+
+.. code-block:: json
+
+    {"pipe": {"description":"MyPipe", "bandwidth": 2, "bandwidthMetric": "Mbit", "mask":"src-ip", "codel_enable": 1, "codel_ecn_enable": 0, "pie_enable": 0,"enabled": 0}}
+
+This requires a ``POST`` operation to the API endpoint
+Wrapping this in a curl command looks like this:
+
+::
+    curl -XPOST -H 'Content-Type: application/json" -k -u "w86XNZob/8Oq8aC5hxh2he+vLN00r0kbNarNtdpoQU781fyoeaOBQsBwkXUt":"puOyw0Ega3xZXeD26XVrJ5WYFepOseySWLM53pJASeTA3" https://10.211.55.100/api/trafficshaper/settings/addpipe
+    -d '{ "pipe" : { "description":"MyPipe", "bandwidth": "2", "bandwidthMetric": "Mbit", "mask":"src-ip", "codel_enable": 1, "codel_ecn_enable": 0,"pie_enable": 0, "enabled": 0} }''
+
+Provided that the JSON payload is correct and passes validation, the response will contain the following data payload:
+
+.. code-block:: json
+
+    {"result":"saved", "uuid":"84f51fc6-e330-4ab7-b71a-31b51495a664"}
+
+
+Where uuid is the unique identifier of the object, which can then be used for other operations.
+
+
+Read a pipe
+-----------
+To confirm that the pipe is created and review all the configured options of the pipe, the following API call is used:
+
+::
+    curl -k -u "w86XNZob/8Oq8aC5hxh2he+vLN00r0kbNarNtdpoQU781fyoeaOBQsBwkXUt":"puOyw0Ega3xZXeD26XVrJ5WYFepOseySWLM53pJASeTA3" \
+    https://10.211.55.100/api/trafficshaper/settings/getpipe/84f51fc6-e330-4ab7-b71a-31b51495a664
+
+This is a straightforward ``GET`` request, note the use of the UUID from the creation return.
+
+.. note::
+    The returned JSON blob is not the same format as the payload used for POST requests to the API
+
+
+Update a pipe
+-------------
+The following json blob will be used to change the description of the pipe, and remove the mask:
+
+.. code-block:: json
+
+    {"pipe": { "description": "Renamed Pipe", "mask":"none" } }
+
+This requires a ``POST`` to the ``setPipe`` endpoint:
+
+::
+    curl -XPOST  -H 'Content-Type: application/json" -k -u "w86XNZob/8Oq8aC5hxh2he+vLN00r0kbNarNtdpoQU781fyoeaOBQsBwkXUt":"puOyw0Ega3xZXeD26XVrJ5WYFepOseySWLM53pJASeTA3" \
+    https://10.211.55.100/api/trafficshaper/settings/setpipe/84f51fc6-e330-4ab7-b71a-31b51495a664 -d '{ pipe : { "description":"Renamed Pipe", "mask":"none"}
+
+Provided that the JSON payload is correct and passes validation, the response will contain the following data payload:
+
+.. code-block:: json
+
+    {"result":"saved", "uuid":"84f51fc6-e330-4ab7-b71a-31b51495a664"}
+
+
+Delete a pipe
+-------------
+Deletion of the pipe is a ``POST`` operation, with an empty json string as the paylod.
+
+::
+     curl -XPOST -H 'Content-Type: application/json" -k -u "w86XNZob/8Oq8aC5hxh2he+vLN00r0kbNarNtdpoQU781fyoeaOBQsBwkXUt":"puOyw0Ega3xZXeD26XVrJ5WYFepOseySWLM53pJASeTA3" \
+    https://10.211.55.100/api/trafficshaper/settings/delpipe/84f51fc6-e330-4ab7-b71a-31b51495a664 -d ""