HTTP API
--------

By default **ironic-discoverd** listens on ``0.0.0.0:5050``, port
can be changed in configuration. Protocol is JSON over HTTP.

The HTTP API consist of these endpoints:

Start Introspection
~~~~~~~~~~~~~~~~~~~

``POST /v1/introspection/<UUID>`` initiate hardware introspection for node
``<UUID>``. All power management configuration for this node needs to be done
prior to calling the endpoint (except when `Setting IPMI Credentials`_).

Requires X-Auth-Token header with Keystone token for authentication.

Optional parameters:

* ``new_ipmi_password`` if set, **ironic-discoverd** will try to set IPMI
  password on the machine to this value. Power credentials validation will be
  skipped and manual power on will be required. See `Setting IPMI
  credentials`_ for details.

* ``new_ipmi_username`` provides new IPMI user name in addition to password
  set by ``new_ipmi_password``. Defaults to current ``ipmi_username`` in
  node ``driver_info`` field.

Response:

* 202 - accepted discovery request
* 400 - bad request
* 401, 403 - missing or invalid authentication
* 404 - node cannot be found

Get Introspection Status
~~~~~~~~~~~~~~~~~~~~~~~~

``GET /v1/introspection/<UUID>`` get hardware discovery status.

Requires X-Auth-Token header with Keystone token for authentication.

Response:

* 200 - OK
* 400 - bad request
* 401, 403 - missing or invalid authentication
* 404 - node cannot be found

Response body: JSON dictionary with keys:

* ``finished`` (boolean) whether discovery is finished
* ``error`` error string or ``null``

Ramdisk Callback
~~~~~~~~~~~~~~~~

``POST /v1/continue`` internal endpoint for the discovery ramdisk to post
back discovered data. Should not be used for anything other than implementing
the ramdisk. Request body: JSON dictionary with at least these keys:

* ``cpus`` number of CPU
* ``cpu_arch`` architecture of the CPU
* ``memory_mb`` RAM in MiB
* ``local_gb`` hard drive size in GiB
* ``interfaces`` dictionary filled with data from all NIC's, keys being
  interface names, values being dictionaries with keys:

  * ``mac`` MAC address
  * ``ip`` IP address

* ``ipmi_address`` IP address of BMC, may be missing on VM
* ``boot_interface`` optional MAC address of the NIC that the machine
  PXE booted from either in standard format ``11:22:33:44:55:66`` or
  in *PXELinux* ``BOOTIF`` format ``01-11-22-33-44-55-66``.

* ``error`` optional error happened during ramdisk run, interpreted by
  ``ramdisk_error`` plugin

* ``logs`` optional base64-encoded logs from the ramdisk

* ``block_devices`` optional block devices information for
  ``root_device_hint`` plugin, dictionary with keys:

  * ``serials`` list of serial numbers of block devices.

.. note::
      This list highly depends on enabled plugins, provided above are
      expected keys for the default set of plugins. See Plugins_ for details.

Response:

* 200 - OK
* 400 - bad request
* 403 - node is not on introspection
* 404 - node cannot be found or multiple nodes found

Response body: JSON dictionary. If `Setting IPMI Credentials`_ is requested,
body will contain the following keys:

* ``ipmi_setup_credentials`` boolean ``True``
* ``ipmi_username`` new IPMI user name
* ``ipmi_password`` new IPMI password

.. _Setting IPMI Credentials: https://github.com/stackforge/ironic-discoverd#setting-ipmi-credentials
.. _Plugins: https://github.com/stackforge/ironic-discoverd#plugins
