API for node inventory

Add api to access node inventory

Story: 2010275
Task: 46204
Change-Id: If50f665da5fbb16f7646f3d6195a6e14e7325b0a

11 files changed, 210 insertions, 4 deletions

diff --git a/ironic/api/controllers/v1/node.py b/ironic/api/controllers/v1/node.py
index 59b166db4..fc6d70481 100644
--- a/ironic/api/controllers/v1/node.py
+++ b/ironic/api/controllers/v1/node.py
@@ -48,6 +48,7 @@ from ironic.common import states as ir_states
 from ironic.conductor import steps as conductor_steps
 import ironic.conf
 from ironic.drivers import base as driver_base
+from ironic.drivers.modules import inspector as inspector
 from ironic import objects
 
 
@@ -1944,6 +1945,39 @@ class NodeHistoryController(rest.RestController):
             node.uuid, event, detail=True)
 
 
+class NodeInventoryController(rest.RestController):
+
+    def __init__(self, node_ident):
+        super(NodeInventoryController).__init__()
+        self.node_ident = node_ident
+
+    def _node_inventory_convert(self, node_inventory):
+        inventory_data = node_inventory['inventory_data']
+        plugin_data = node_inventory['plugin_data']
+        return {"inventory": inventory_data, "plugin_data": plugin_data}
+
+    @METRICS.timer('NodeInventoryController.get')
+    @method.expose()
+    @args.validate(node_ident=args.uuid_or_name)
+    def get(self):
+        """Node inventory of the node.
+
+        :param node_ident: the UUID of a node.
+        """
+        node = api_utils.check_node_policy_and_retrieve(
+            'baremetal:node:inventory:get', self.node_ident)
+        store_data = CONF.inspector.inventory_data_backend
+        if store_data == 'none':
+            raise exception.NotFound(
+                (_("Cannot obtain node inventory because it was not stored")))
+        if store_data == 'database':
+            node_inventory = objects.NodeInventory.get_by_node_id(
+                api.request.context, node.id)
+            return self._node_inventory_convert(node_inventory)
+        if store_data == 'swift':
+            return inspector.get_introspection_data(node.uuid)
+
+
 class NodesController(rest.RestController):
     """REST controller for Nodes."""
 
@@ -1990,6 +2024,7 @@ class NodesController(rest.RestController):
         'bios': bios.NodeBiosController,
         'allocation': allocation.NodeAllocationController,
         'history': NodeHistoryController,
+        'inventory': NodeInventoryController,
     }
 
     @pecan.expose()
@@ -2013,7 +2048,9 @@ class NodesController(rest.RestController):
             or (remainder[0] == 'allocation'
                 and not api_utils.allow_allocations())
             or (remainder[0] == 'history'
-                and not api_utils.allow_node_history())):
+                and not api_utils.allow_node_history())
+            or (remainder[0] == 'inventory'
+                and not api_utils.allow_node_inventory())):
             pecan.abort(http_client.NOT_FOUND)
         if remainder[0] == 'traits' and not api_utils.allow_traits():
             # NOTE(mgoddard): Returning here will ensure we exhibit the
diff --git a/ironic/api/controllers/v1/utils.py b/ironic/api/controllers/v1/utils.py
index 8de2d156d..0494077cc 100644
--- a/ironic/api/controllers/v1/utils.py
+++ b/ironic/api/controllers/v1/utils.py
@@ -1341,6 +1341,11 @@ def allow_node_history():
     return api.request.version.minor >= versions.MINOR_78_NODE_HISTORY
 
 
+def allow_node_inventory():
+    """Check if node inventory is allowed."""
+    return api.request.version.minor >= versions.MINOR_81_NODE_INVENTORY
+
+
 def get_request_return_fields(fields, detail, default_fields,
                               check_detail_version=allow_detail_query,
                               check_fields_version=None):
diff --git a/ironic/api/controllers/v1/versions.py b/ironic/api/controllers/v1/versions.py
index 763d92389..4dcfd7fb8 100644
--- a/ironic/api/controllers/v1/versions.py
+++ b/ironic/api/controllers/v1/versions.py
@@ -118,6 +118,7 @@ BASE_VERSION = 1
 # v1.78: Add node history endpoint
 # v1.79: Change allocation behaviour to prefer node name match
 # v1.80: Marker to represent self service node creation/deletion
+# v1.81: Add node inventory
 MINOR_0_JUNO = 0
 MINOR_1_INITIAL_VERSION = 1
 MINOR_2_AVAILABLE_STATE = 2
@@ -199,6 +200,7 @@ MINOR_77_DRIVER_FIELDS_SELECTOR = 77
 MINOR_78_NODE_HISTORY = 78
 MINOR_79_ALLOCATION_NODE_NAME = 79
 MINOR_80_PROJECT_CREATE_DELETE_NODE = 80
+MINOR_81_NODE_INVENTORY = 81
 
 # When adding another version, update:
 # - MINOR_MAX_VERSION
@@ -206,7 +208,7 @@ MINOR_80_PROJECT_CREATE_DELETE_NODE = 80
 #   explanation of what changed in the new version
 # - common/release_mappings.py, RELEASE_MAPPING['master']['api']
 
-MINOR_MAX_VERSION = MINOR_80_PROJECT_CREATE_DELETE_NODE
+MINOR_MAX_VERSION = MINOR_81_NODE_INVENTORY
 
 # String representations of the minor and maximum versions
 _MIN_VERSION_STRING = '{}.{}'.format(BASE_VERSION, MINOR_1_INITIAL_VERSION)
diff --git a/ironic/common/policy.py b/ironic/common/policy.py
index 7fdd398f9..afce51c77 100644
--- a/ironic/common/policy.py
+++ b/ironic/common/policy.py
@@ -954,6 +954,19 @@ node_policies = [
         # operating context.
         deprecated_rule=deprecated_node_get
     ),
+    policy.DocumentedRuleDefault(
+        name='baremetal:node:inventory:get',
+        check_str=SYSTEM_OR_OWNER_READER,
+        scope_types=['system', 'project'],
+        description='Retrieve introspection data for a node.',
+        operations=[
+            {'path': '/nodes/{node_ident}/inventory', 'method': 'GET'},
+        ],
+        # This rule fallsback to deprecated_node_get in order to provide a
+        # mechanism so the additional policies only engage in an updated
+        # operating context.
+        deprecated_rule=deprecated_node_get
+    ),
 
 
 ]
diff --git a/ironic/common/release_mappings.py b/ironic/common/release_mappings.py
index 555ff164d..1cd7ac17c 100644
--- a/ironic/common/release_mappings.py
+++ b/ironic/common/release_mappings.py
@@ -511,7 +511,7 @@ RELEASE_MAPPING = {
         }
     },
     'master': {
-        'api': '1.80',
+        'api': '1.81',
         'rpc': '1.55',
         'objects': {
             'Allocation': ['1.1'],
diff --git a/ironic/common/swift.py b/ironic/common/swift.py
index dde94fb18..87cda4fad 100644
--- a/ironic/common/swift.py
+++ b/ironic/common/swift.py
@@ -168,6 +168,23 @@ class SwiftAPI(object):
             (parse_result.scheme, parse_result.netloc, url_path,
              None, None, None))
 
+    def get_object(self, object, container):
+        """Downloads a given object from Swift.
+
+        :param object: The name of the object in Swift
+        :param container: The name of the container for the object.
+            Defaults to the value set in the configuration options.
+        :returns: Swift object
+        :raises: utils.Error, if the Swift operation fails.
+        """
+        try:
+            obj = self.connection.download_object(object, container=container)
+        except swift_exceptions.ClientException as e:
+            operation = _("get object")
+            raise exception.SwiftOperationError(operation=operation, error=e)
+
+        return obj
+
     def delete_object(self, container, obj):
         """Deletes the given Swift object.
 
diff --git a/ironic/drivers/modules/inspector.py b/ironic/drivers/modules/inspector.py
index 20911cbaa..a4c8c1091 100644
--- a/ironic/drivers/modules/inspector.py
+++ b/ironic/drivers/modules/inspector.py
@@ -425,3 +425,20 @@ def store_introspection_data(node_uuid, inventory_data, plugin_data):
                                       plugin_data,
                                       container)
     return swift_object_name
+
+
+def get_introspection_data(node_uuid):
+    """Uploads introspection data to Swift.
+
+    :param data: data to store in Swift
+    :param node_id: ID of the Ironic node that the data came from
+    :returns: name of the Swift object that the data is stored in
+    """
+    swift_api = swift.SwiftAPI()
+    swift_object_name = '%s-%s' % (_OBJECT_NAME_PREFIX, node_uuid)
+    container = CONF.inspector.swift_inventory_data_container
+    inventory_data = swift_api.get_object(swift_object_name + '-inventory',
+                                          container)
+    plugin_data = swift_api.get_object(swift_object_name + '-plugin',
+                                       container)
+    return {"inventory": inventory_data, "plugin_data": plugin_data}
diff --git a/ironic/tests/unit/api/controllers/v1/test_node.py b/ironic/tests/unit/api/controllers/v1/test_node.py
index 6531f36e7..2f880db7d 100644
--- a/ironic/tests/unit/api/controllers/v1/test_node.py
+++ b/ironic/tests/unit/api/controllers/v1/test_node.py
@@ -43,6 +43,7 @@ from ironic.common import indicator_states
 from ironic.common import policy
 from ironic.common import states
 from ironic.conductor import rpcapi
+from ironic.drivers.modules import inspector
 from ironic import objects
 from ironic.objects import fields as obj_fields
 from ironic import tests as tests_root
@@ -51,6 +52,7 @@ from ironic.tests.unit.api import base as test_api_base
 from ironic.tests.unit.api import utils as test_api_utils
 from ironic.tests.unit.objects import utils as obj_utils
 
+CONF = inspector.CONF
 
 with open(
         os.path.join(
@@ -7912,3 +7914,55 @@ class TestNodeHistory(test_api_base.BaseApiTest):
         self.assertIn('nodes/%s/history' % self.node.uuid, ret['next'])
         self.assertIn('limit=1', ret['next'])
         self.assertIn('marker=%s' % result_uuid, ret['next'])
+
+
+class TestNodeInventory(test_api_base.BaseApiTest):
+    fake_inventory_data = {"cpu": "amd"}
+    fake_plugin_data = {"disks": [{"name": "/dev/vda"}]}
+
+    def setUp(self):
+        super(TestNodeInventory, self).setUp()
+        self.version = "1.81"
+        self.node = obj_utils.create_test_node(
+            self.context,
+            provision_state=states.AVAILABLE, name='node-81')
+        self.node.save()
+        self.node.obj_reset_changes()
+
+    def _add_inventory(self):
+        self.inventory = objects.NodeInventory(
+            node_id=self.node.id, inventory_data=self.fake_inventory_data,
+            plugin_data=self.fake_plugin_data)
+        self.inventory.create()
+
+    def test_get_old_version(self):
+        ret = self.get_json('/nodes/%s/inventory' % self.node.uuid,
+                            headers={api_base.Version.string: "1.80"},
+                            expect_errors=True)
+        self.assertEqual(http_client.NOT_FOUND, ret.status_code)
+
+    def test_get_inventory_no_inventory(self):
+        ret = self.get_json('/nodes/%s/inventory' % self.node.uuid,
+                            headers={api_base.Version.string: self.version},
+                            expect_errors=True)
+        self.assertEqual(http_client.NOT_FOUND, ret.status_code)
+
+    def test_get_inventory(self):
+        self._add_inventory()
+        CONF.set_override('inventory_data_backend', 'database',
+                          group='inspector')
+        ret = self.get_json('/nodes/%s/inventory' % self.node.uuid,
+                            headers={api_base.Version.string: self.version})
+        self.assertEqual({'inventory': self.fake_inventory_data,
+                          'plugin_data': self.fake_plugin_data}, ret)
+
+    @mock.patch.object(inspector, 'get_introspection_data', autospec=True)
+    def test_get_inventory_swift(self, mock_get_data):
+        CONF.set_override('inventory_data_backend', 'swift',
+                          group='inspector')
+        mock_get_data.return_value = {"inventory": self.fake_inventory_data,
+                                      "plugin_data": self.fake_plugin_data}
+        ret = self.get_json('/nodes/%s/inventory' % self.node.uuid,
+                            headers={api_base.Version.string: self.version})
+        self.assertEqual({'inventory': self.fake_inventory_data,
+                          'plugin_data': self.fake_plugin_data}, ret)
diff --git a/ironic/tests/unit/api/test_acl.py b/ironic/tests/unit/api/test_acl.py
index cdc20d477..f5cbe498d 100644
--- a/ironic/tests/unit/api/test_acl.py
+++ b/ironic/tests/unit/api/test_acl.py
@@ -286,6 +286,8 @@ class TestRBACModelBeforeScopesBase(TestACLBase):
         db_utils.create_test_node_trait(
             node_id=fake_db_node['id'])
         fake_history = db_utils.create_test_history(node_id=fake_db_node.id)
+        fake_inventory = db_utils.create_test_inventory(
+            node_id=fake_db_node.id)
         # dedicated node for portgroup addition test to avoid
         # false positives with test runners.
         db_utils.create_test_node(
@@ -309,6 +311,7 @@ class TestRBACModelBeforeScopesBase(TestACLBase):
             'volume_target_ident': fake_db_volume_target['uuid'],
             'volume_connector_ident': fake_db_volume_connector['uuid'],
             'history_ident': fake_history['uuid'],
+            'node_inventory': fake_inventory,
         })
 
 
@@ -415,6 +418,8 @@ class TestRBACProjectScoped(TestACLBase):
             resource_class="CUSTOM_TEST")
         owned_node_history = db_utils.create_test_history(
             node_id=owned_node.id)
+        owned_node_inventory = db_utils.create_test_inventory(
+            node_id=owned_node.id)
 
         # Leased nodes
         leased_node = db_utils.create_test_node(
@@ -445,6 +450,8 @@ class TestRBACProjectScoped(TestACLBase):
 
         leased_node_history = db_utils.create_test_history(
             node_id=leased_node.id)
+        leased_node_inventory = db_utils.create_test_inventory(
+            node_id=leased_node.id)
 
         # Random objects that shouldn't be project visible
         other_node = db_utils.create_test_node(
@@ -480,7 +487,9 @@ class TestRBACProjectScoped(TestACLBase):
             'owner_allocation': fake_owner_allocation['uuid'],
             'lessee_allocation': fake_leased_allocation['uuid'],
             'owned_history_ident': owned_node_history['uuid'],
-            'lessee_history_ident': leased_node_history['uuid']})
+            'lessee_history_ident': leased_node_history['uuid'],
+            'owned_inventory': owned_node_inventory,
+            'leased_inventory': leased_node_inventory})
 
     @ddt.file_data('test_rbac_project_scoped.yaml')
     @ddt.unpack
diff --git a/ironic/tests/unit/api/test_rbac_project_scoped.yaml b/ironic/tests/unit/api/test_rbac_project_scoped.yaml
index b55439ad1..b57f7fc5c 100644
--- a/ironic/tests/unit/api/test_rbac_project_scoped.yaml
+++ b/ironic/tests/unit/api/test_rbac_project_scoped.yaml
@@ -3402,3 +3402,41 @@ node_history_get_entry_admin:
   method: get
   headers: *third_party_admin_headers
   assert_status: 404
+
+# Node inventory support
+
+node_inventory_get_admin:
+  path: '/v1/nodes/{owner_node_ident}/inventory'
+  method: get
+  headers: *owner_admin_headers
+  assert_status: 200
+
+node_inventory_get_member:
+  path: '/v1/nodes/{owner_node_ident}/inventory'
+  method: get
+  headers: *owner_member_headers
+  assert_status: 200
+
+node_inventory_get_reader:
+  path: '/v1/nodes/{owner_node_ident}/inventory'
+  method: get
+  headers: *owner_reader_headers
+  assert_status: 200
+
+lessee_node_inventory_get_admin:
+  path: '/v1/nodes/{node_ident}/inventory'
+  method: get
+  headers: *lessee_admin_headers
+  assert_status: 404
+
+lessee_node_inventory_get_member:
+  path: '/v1/nodes/{node_ident}/inventory'
+  method: get
+  headers: *lessee_member_headers
+  assert_status: 404
+
+lessee_node_inventory_get_reader:
+  path: '/v1/nodes/{node_ident}/inventory'
+  method: get
+  headers: *lessee_reader_headers
+  assert_status: 404
diff --git a/ironic/tests/unit/api/test_rbac_system_scoped.yaml b/ironic/tests/unit/api/test_rbac_system_scoped.yaml
index d74a5fcae..533356217 100644
--- a/ironic/tests/unit/api/test_rbac_system_scoped.yaml
+++ b/ironic/tests/unit/api/test_rbac_system_scoped.yaml
@@ -2123,3 +2123,17 @@ node_history_get_entry_reader:
   method: get
   headers: *reader_headers
   assert_status: 200
+
+# Node inventory support
+
+node_inventory_get_admin:
+  path: '/v1/nodes/{node_ident}/inventory'
+  method: get
+  headers: *admin_headers
+  assert_status: 200
+
+node_inventory_get_reader:
+  path: '/v1/nodes/{node_ident}/inventory'
+  method: get
+  headers: *reader_headers
+  assert_status: 200