# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
""" P1 tests for Snapshots
"""
#Import Local Modules
from nose.plugins.attrib import attr
from marvin.cloudstackTestCase import cloudstackTestCase, unittest
from marvin.cloudstackAPI import deleteVolume
from marvin.lib.utils import (cleanup_resources)
from marvin.lib.base import (Project,
                             VirtualMachine,
                             Account,
                             Network,
                             PublicIPAddress,
                             NATRule,
                             ServiceOffering,
                             Vpn,
                             VpnUser,
                             Snapshot,
                             ImageStore,
                             DiskOffering,
                             LoadBalancerRule,
                             Template,
                             Iso)
from marvin.lib.common import (get_domain,
                               get_zone,
                               get_template,
                               list_volumes,
                               get_builtin_template_info,
                               find_storage_pool_type)
import time

class Services:
    """Test Snapshots Services
    """

    def __init__(self):
        self.services = {
                        "account": {
                                    "email": "test@test.com",
                                    "firstname": "Test",
                                    "lastname": "User",
                                    "username": "test",
                                    # Random characters are appended for unique
                                    # username
                                    "password": "password",
                         },
                         "project": {
                                    "name": "Project",
                                    "displaytext": "Test project",
                        },
                         "service_offering": {
                                    "name": "Tiny Instance",
                                    "displaytext": "Tiny Instance",
                                    "cpunumber": 1,
                                    "cpuspeed": 100,    # in MHz
                                    "memory": 128,       # In MBs
                        },
                        "disk_offering": {
                                    "displaytext": "Small",
                                    "name": "Small",
                                    "disksize": 1
                        },
                        "volume": {
                                   "diskname": "TestDiskServ",
                                   },
                        "server": {
                                    "displayname": "TestVM",
                                    "username": "root",
                                    "password": "password",
                                    "ssh_port": 22,
                                    "hypervisor": 'XenServer',
                                    "privateport": 22,
                                    "publicport": 22,
                                    "protocol": 'TCP',
                                },
                        "templates": {
                                    "displaytext": 'Template',
                                    "name": 'Template',
                                    "ostype": 'CentOS 5.3 (64-bit)',
                                    "templatefilter": 'self',
                                    "url": "http://download.cloud.com/releases/2.0.0/UbuntuServer-10-04-64bit.qcow2.bz2"
                                },
                        "iso": {
                                  "displaytext": "Test ISO",
                                  "name": "Test ISO",
                                  "url": "http://people.apache.org/~tsp/dummy.iso",
                                  # Source URL where ISO is located
                                  "isextractable": True,
                                  "isfeatured": True,
                                  "ispublic": True,
                                  "ostype": 'CentOS 5.3 (64-bit)',
                                },
                        "lbrule": {
                                   "name": "SSH",
                                   "alg": "roundrobin",
                                   # Algorithm used for load balancing
                                   "privateport": 22,
                                   "publicport": 2222,
                                },
                        "natrule": {
                                   "privateport": 22,
                                   "publicport": 22,
                                   "protocol": "TCP"
                                },
                        "vpn_user": {
                                   "username": "test",
                                   "password": "test",
                                },
                        "ostype": 'CentOS 5.3 (64-bit)',
                        # Cent OS 5.3 (64 bit)
                        "sleep": 60,
                        "timeout": 10,
                    }


class TestVmUsage(cloudstackTestCase):

    @classmethod
    def setUpClass(cls):
        cls.testClient = super(TestVmUsage, cls).getClsTestClient()
        cls.api_client = cls.testClient.getApiClient()

        cls.services = Services().services
        # Get Zone, Domain and templates
        cls.domain = get_domain(cls.api_client)
        cls.zone = get_zone(cls.api_client, cls.testClient.getZoneForTests())
        cls.services['mode'] = cls.zone.networktype

        template = get_template(
                            cls.api_client,
                            cls.zone.id,
                            cls.services["ostype"]
                            )
        cls.services["server"]["zoneid"] = cls.zone.id

        cls.services["template"] = template.id

        # Create Account, VMs etc
        cls.account = Account.create(
                            cls.api_client,
                            cls.services["account"],
                            domainid=cls.domain.id
                            )

        cls.services["account"] = cls.account.name

        cls.project = Project.create(
                                 cls.api_client,
                                 cls.services["project"],
                                 account=cls.account.name,
                                 domainid=cls.account.domainid
                                 )

        cls.service_offering = ServiceOffering.create(
                                            cls.api_client,
                                            cls.services["service_offering"]
                                            )
        cls.virtual_machine = VirtualMachine.create(
                                cls.api_client,
                                cls.services["server"],
                                templateid=template.id,
                                serviceofferingid=cls.service_offering.id,
                                projectid=cls.project.id
                                )
        cls._cleanup = [
                        cls.project,
                        cls.service_offering,
                        cls.account,
                        ]
        return

    @classmethod
    def tearDownClass(cls):
        try:
            #Cleanup resources used
            cleanup_resources(cls.api_client, cls._cleanup)
        except Exception as e:
            raise Exception("Warning: Exception during cleanup : %s" % e)
        return

    def setUp(self):
        self.apiclient = self.testClient.getApiClient()
        self.dbclient = self.testClient.getDbConnection()
        self.cleanup = []
        return

    def tearDown(self):
        try:
            #Clean up, terminate the created instance, volumes and snapshots
            cleanup_resources(self.apiclient, self.cleanup)
        except Exception as e:
            raise Exception("Warning: Exception during cleanup : %s" % e)
        return

    @attr(tags=["advanced", "basic", "sg", "eip", "advancedns", "simulator"], required_hardware="false")
    def test_01_vm_usage(self):
        """Test Create/Destroy VM and verify usage calculation
        """
        # Validate the following
        # 1. Create a VM. Verify usage_events table contains VM .create,
        #    VM.start , Network.offering.assign , Volume.create events
        # 2. Stop the VM. Verify usage_events table contains
        #    network.offerings.remove ,VM .stop Events for the created account.
        # 3. Destroy the VM after some time. Verify usage_events table contains
        #    VM.Destroy and volume .delete Event for the created account
        # 4. Delete the account

        try:
            self.debug("Stopping the VM: %s" % self.virtual_machine.id)
            # Stop the VM
            self.virtual_machine.stop(self.apiclient)
        except Exception as e:
            self.fail("Failed to stop VM: %s" % e)

        try:
            # Destroy the VM
            self.debug("Destroying the VM: %s" % self.virtual_machine.id)
            self.virtual_machine.delete(self.apiclient, expunge=True)
        except Exception as e:
            self.fail("Failed to delete VM: %s" % e)

        # Fetch project account ID from project UUID
        self.debug(
            "select project_account_id from projects where uuid = '%s';" \
                        % self.project.id)

        qresultset = self.dbclient.execute(
                        "select project_account_id from projects where uuid = '%s';" \
                        % self.project.id
                        )
        self.assertEqual(
                         isinstance(qresultset, list),
                         True,
                         "Check DB query result set for valid data"
                         )

        self.assertNotEqual(
                            len(qresultset),
                            0,
                            "Check DB Query result set"
                            )
        qresult = qresultset[0]

        account_id = qresult[0]
        self.debug("select type from usage_event where account_id = '%s';" \
                        % account_id)

        qresultset = self.dbclient.execute(
                        "select type from usage_event where account_id = '%s';" \
                        % account_id
                        )
        self.assertEqual(
                         isinstance(qresultset, list),
                         True,
                         "Check DB query result set for valid data"
                         )

        self.assertNotEqual(
                            len(qresultset),
                            0,
                            "Check DB Query result set"
                            )
        qresult = str(qresultset)
        self.debug("Query result: %s" % qresult)
        # Check if VM.CREATE, VM.DESTROY events present in usage_event table
        self.assertEqual(
                            qresult.count('VM.START'),
                            1,
                            "Check VM.START event in events table"
                        )

        self.assertEqual(
                            qresult.count('NETWORK.OFFERING.ASSIGN'),
                            1,
                            "Check NETWORK.OFFERING.ASSIGN in events table"
                        )
        self.assertEqual(
                            qresult.count('VM.CREATE'),
                            1,
                            "Check VM.CREATE in list events"
                        )

        self.assertEqual(
                            qresult.count('VOLUME.CREATE'),
                            1,
                            "Check VOLUME.CREATE in events table"
                        )

        self.assertEqual(
                            qresult.count('VM.STOP'),
                            1,
                            "Check VM.STOP in events table"
                        )

        self.assertEqual(
                            qresult.count('NETWORK.OFFERING.REMOVE'),
                            1,
                            "Check NETWORK.OFFERING.REMOVE in list events"
                        )

        self.assertEqual(
                            qresult.count('VM.DESTROY'),
                            1,
                            "Check VM.DESTROY in events table"
                        )

        self.assertEqual(
                            qresult.count('VOLUME.DELETE'),
                            1,
                            "Check VOLUME.DELETE in events table"
                        )
        return


class TestPublicIPUsage(cloudstackTestCase):

    @classmethod
    def setUpClass(cls):
        cls.testClient = super(TestPublicIPUsage, cls).getClsTestClient()
        cls.api_client = cls.testClient.getApiClient()

        cls.services = Services().services
        # Get Zone, Domain and templates
        cls.domain = get_domain(cls.api_client)
        cls.zone = get_zone(cls.api_client, cls.testClient.getZoneForTests())
        cls.services['mode'] = cls.zone.networktype

        cls.template = get_template(
                            cls.api_client,
                            cls.zone.id,
                            cls.services["ostype"]
                            )
        cls.services["server"]["zoneid"] = cls.zone.id

        cls.services["template"] = cls.template.id

        # Create VMs, Assign Public IP etc
        cls.account = Account.create(
                            cls.api_client,
                            cls.services["account"],
                            domainid=cls.domain.id
                            )

        cls.services["account"] = cls.account.name

        cls.project = Project.create(
                                 cls.api_client,
                                 cls.services["project"],
                                 account=cls.account.name,
                                 domainid=cls.account.domainid
                                 )

        cls.service_offering = ServiceOffering.create(
                                            cls.api_client,
                                            cls.services["service_offering"]
                                            )
        cls.virtual_machine = VirtualMachine.create(
                                    cls.api_client,
                                    cls.services["server"],
                                    templateid=cls.template.id,
                                    serviceofferingid=cls.service_offering.id,
                                    projectid=cls.project.id
                                )
        networks = Network.list(
                                cls.api_client,
                                projectid=cls.project.id,
                                listall=True
                                )
        if isinstance(networks, list):
            network = networks[0]
        else:
            raise Exception("List networks call failed")

        cls.public_ip = PublicIPAddress.create(
                                           cls.api_client,
                                           zoneid=cls.zone.zoneid,
                                           services=cls.services["server"],
                                           networkid=network.id,
                                           projectid=cls.project.id
                                           )
        cls._cleanup = [
                        cls.project,
                        cls.service_offering,
                        cls.account,
                        ]
        return

    @classmethod
    def tearDownClass(cls):
        try:
            #Cleanup resources used
            cleanup_resources(cls.api_client, cls._cleanup)
        except Exception as e:
            raise Exception("Warning: Exception during cleanup : %s" % e)
        return

    def setUp(self):
        self.apiclient = self.testClient.getApiClient()
        self.dbclient = self.testClient.getDbConnection()
        self.cleanup = []
        return

    def tearDown(self):
        try:
            #Clean up, terminate the created instance
            cleanup_resources(self.apiclient, self.cleanup)
        except Exception as e:
            raise Exception("Warning: Exception during cleanup : %s" % e)
        return

    @attr(tags=["advanced", "eip", "advancedns", "simulator"], required_hardware="false")
    def test_01_public_ip_usage(self):
        """Test Assign new IP and verify usage calculation
        """
        # Validate the following
        # 1. Acquire a IP for the network of this account. Verify usage_event
        #    table has  Acquire IP event for  the IP for this account
        # 2. Release one of the IP of this account. Verify usage_event table
        #    has IP.Release event for released IP for this account
        # 3. Delete the newly created account

        self.debug("Deleting public IP: %s" %
                                self.public_ip.ipaddress)

        # Release one of the IP
        self.public_ip.delete(self.apiclient)

        # Fetch project account ID from project UUID
        self.debug(
            "select project_account_id from projects where uuid = '%s';" \
                        % self.project.id)

        qresultset = self.dbclient.execute(
                        "select project_account_id from projects where uuid = '%s';" \
                        % self.project.id
                        )
        self.assertEqual(
                         isinstance(qresultset, list),
                         True,
                         "Check DB query result set for valid data"
                         )
        self.assertNotEqual(
                            len(qresultset),
                            0,
                            "Check DB Query result set"
                            )
        qresult = qresultset[0]

        account_id = qresult[0]
        self.debug("select type from usage_event where account_id = '%s';" \
                        % account_id)

        qresultset = self.dbclient.execute(
                        "select type from usage_event where account_id = '%s';" \
                        % account_id
                        )

        self.assertEqual(
                         isinstance(qresultset, list),
                         True,
                         "Check DB query result set for valid data"
                         )
        self.assertNotEqual(
                            len(qresultset),
                            0,
                            "Check DB Query result set"
                            )

        qresult = str(qresultset)
        # Check if NET.IPASSIGN, NET.IPRELEASE events present in usage_event
        # table
        self.assertEqual(
                            qresult.count('NET.IPASSIGN') > 0,
                            True,
                            "Check NET.IPASSIGN event in events table"
                        )

        self.assertEqual(
                            qresult.count('NET.IPRELEASE') > 0,
                            True,
                            "Check NET.IPRELEASE in events table"
                        )
        return


class TestVolumeUsage(cloudstackTestCase):

    @classmethod
    def setUpClass(cls):
        cls.testClient = super(TestVolumeUsage, cls).getClsTestClient()
        cls.api_client = cls.testClient.getApiClient()

        cls.services = Services().services
        # Get Zone, Domain and templates
        cls.domain = get_domain(cls.api_client)
        cls.zone = get_zone(cls.api_client, cls.testClient.getZoneForTests())
        cls.services['mode'] = cls.zone.networktype
        cls.hypervisor = cls.testClient.getHypervisorInfo()
        cls.rbdStorageFound = True
        cls._cleanup = []
        if cls.hypervisor.lower() == 'lxc':
            if not find_storage_pool_type(cls.api_client, storagetype='rbd'):
                cls.rbdStorageFound = False
                return
                #raise unittest.SkipTest("RBD storage type is required for data volumes for LXC")
        cls.disk_offering = DiskOffering.create(
                                    cls.api_client,
                                    cls.services["disk_offering"]
                                    )
        template = get_template(
                            cls.api_client,
                            cls.zone.id,
                            cls.services["ostype"]
                            )
        cls.services["server"]["zoneid"] = cls.zone.id
        cls.services["server"]["diskoffering"] = cls.disk_offering.id
        cls.services["template"] = template.id

        # Create Account, VMs etc
        cls.account = Account.create(
                            cls.api_client,
                            cls.services["account"],
                            domainid=cls.domain.id
                            )

        cls.services["account"] = cls.account.name

        cls.project = Project.create(
                                 cls.api_client,
                                 cls.services["project"],
                                 account=cls.account.name,
                                 domainid=cls.account.domainid
                                 )

        cls.service_offering = ServiceOffering.create(
                                            cls.api_client,
                                            cls.services["service_offering"]
                                            )
        cls.virtual_machine = VirtualMachine.create(
                                cls.api_client,
                                cls.services["server"],
                                templateid=template.id,
                                serviceofferingid=cls.service_offering.id,
                                projectid=cls.project.id
                                )
        cls._cleanup = [
                        cls.project,
                        cls.service_offering,
                        cls.disk_offering,
                        cls.account,
                        ]
        return

    @classmethod
    def tearDownClass(cls):
        try:
            #Cleanup resources used
            cleanup_resources(cls.api_client, cls._cleanup)
        except Exception as e:
            raise Exception("Warning: Exception during cleanup : %s" % e)
        return

    def setUp(self):
        self.apiclient = self.testClient.getApiClient()
        self.dbclient = self.testClient.getDbConnection()
        self.cleanup = []
        if not self.rbdStorageFound:
            self.skipTest("")
        return

    def tearDown(self):
        try:
            #Clean up, terminate the created instance, volumes
            cleanup_resources(self.apiclient, self.cleanup)
        except Exception as e:
            raise Exception("Warning: Exception during cleanup : %s" % e)
        return

    @attr(tags=["advanced", "basic", "sg", "eip", "advancedns", "simulator"], required_hardware="false")
    def test_01_volume_usage(self):
        """Test Create/delete a volume and verify correct usage is recorded
        """
        # Validate the following
        # 1. Volume.create event for both root and data disk is there for the
        #    created account in cloud.usage_event table
        # 2. Stop the VM
        # 3. Detach the data disk from this VM
        # 4. Destroy the Data disk. Volume.delete event is generated for data
        #    disk of the destroyed VM

        # Stop VM
        self.debug("Stopping VM with ID: %s" % self.virtual_machine.id)
        try:
            self.virtual_machine.stop(self.apiclient)
        except Exception as e:
            self.fail("Failed to stop VM: %s" % e)

        volume_response = list_volumes(
                                    self.apiclient,
                                    projectid=self.project.id,
                                    type='DATADISK',
                                    listall=True
                                    )
        self.assertEqual(
                         isinstance(volume_response, list),
                         True,
                         "Check for valid list volumes response"
                         )
        data_volume = volume_response[0]

        # Detach data Disk
        self.debug("Detaching volume ID: %s VM with ID: %s" % (
                                                 data_volume.id,
                                                 self.virtual_machine.id
                                                 ))
        try:
            self.virtual_machine.detach_volume(self.apiclient, data_volume)
        except Exception as e:
            self.fail("Failed to detach volume: %s" % e)

        # Delete Data disk
        self.debug("Delete volume ID: %s" % data_volume.id)
        cmd = deleteVolume.deleteVolumeCmd()
        cmd.id = data_volume.id
        self.apiclient.deleteVolume(cmd)

        # Fetch project account ID from project UUID
        self.debug(
            "select project_account_id from projects where uuid = '%s';" \
                        % self.project.id)

        qresultset = self.dbclient.execute(
                        "select project_account_id from projects where uuid = '%s';" \
                        % self.project.id
                        )
        self.assertEqual(
                         isinstance(qresultset, list),
                         True,
                         "Check DB query result set for valid data"
                         )

        self.assertNotEqual(
                            len(qresultset),
                            0,
                            "Check DB Query result set"
                            )
        qresult = qresultset[0]

        account_id = qresult[0]
        self.debug("select type from usage_event where account_id = '%s';" \
                        % account_id)

        qresultset = self.dbclient.execute(
                        "select type from usage_event where account_id = '%s';" \
                        % account_id
                        )

        self.assertNotEqual(
                            len(qresultset),
                            0,
                            "Check DB Query result set"
                            )
        self.assertEqual(
                         isinstance(qresultset, list),
                         True,
                         "Check DB query result set for valid data"
                         )

        qresult = str(qresultset)
        self.debug("Query result: %s" % qresult)
        # Check VOLUME.CREATE, VOLUME.DESTROY events in cloud.usage_event table
        self.assertEqual(
                            qresult.count('VOLUME.CREATE'),
                            2,
                            "Check VOLUME.CREATE event in events table"
                        )

        self.assertEqual(
                            qresult.count('VOLUME.DELETE'),
                            1,
                            "Check VOLUME.DELETE in events table"
                        )
        return


class TestTemplateUsage(cloudstackTestCase):

    @classmethod
    def setUpClass(cls):
        cls.testClient = super(TestTemplateUsage, cls).getClsTestClient()
        cls.api_client = cls.testClient.getApiClient()

        cls.services = Services().services
        # Get Zone, Domain and templates
        cls.domain = get_domain(cls.api_client)
        cls.zone = get_zone(cls.api_client, cls.testClient.getZoneForTests())
        cls.services['mode'] = cls.zone.networktype
        cls.services["server"]["zoneid"] = cls.zone.id
        template = get_template(
                            cls.api_client,
                            cls.zone.id,
                            cls.services["ostype"]
                            )
        cls.services["server"]["zoneid"] = cls.zone.id
        cls._cleanup = []
        try:
            cls.account = Account.create(
                            cls.api_client,
                            cls.services["account"],
                            domainid=cls.domain.id
                            )
            cls._cleanup.append(cls.account)
            cls.userapiclient = cls.testClient.getUserApiClient(
                                    UserName=cls.account.name,
                                    DomainName=cls.account.domain)
            cls.services["account"] = cls.account.name

            cls.project = Project.create(
                                 cls.api_client,
                                 cls.services["project"],
                                 account=cls.account.name,
                                 domainid=cls.account.domainid
                                 )
            cls._cleanup.insert(-1, cls.project)
            cls.service_offering = ServiceOffering.create(
                                            cls.api_client,
                                            cls.services["service_offering"])
            #create virtual machine
            cls.virtual_machine = VirtualMachine.create(
                                    cls.api_client,
                                    cls.services["server"],
                                    templateid=template.id,
                                    serviceofferingid=cls.service_offering.id,
                                    projectid=cls.project.id
                                    )

            #Stop virtual machine
            cls.virtual_machine.stop(cls.api_client)

            list_volume = list_volumes(
                                   cls.api_client,
                                   projectid=cls.project.id,
                                   type='ROOT',
                                   listall=True
                                   )
            if isinstance(list_volume, list):
                cls.volume = list_volume[0]
            else:
                raise Exception("List Volumes failed!")
        except Exception as e:
            cls.tearDownClass()
            raise unittest.SkipTest("Failed during setUpClass: %s" % e)
        return

    @classmethod
    def tearDownClass(cls):
        try:
            #Cleanup resources used
            cleanup_resources(cls.api_client, cls._cleanup)
        except Exception as e:
            raise Exception("Warning: Exception during cleanup : %s" % e)
        return

    def setUp(self):
        self.apiclient = self.testClient.getApiClient()
        self.dbclient = self.testClient.getDbConnection()
        self.cleanup = []
        return

    def tearDown(self):
        try:
            #Clean up, terminate the created instance, templates
            cleanup_resources(self.apiclient, self.cleanup)
        except Exception as e:
            raise Exception("Warning: Exception during cleanup : %s" % e)
        return

    @attr(tags=["advanced", "basic", "sg", "eip", "advancedns"], required_hardware="true")
    def test_01_template_usage(self):
        """Test Upload/ delete a template and verify correct usage is generated
            for the template uploaded
        """
        # Validate the following
        # 1. Create a account
        # 2. Register template in the project. template.create event is
        #    recorded in cloud.usage_event table for this account
        # 3. Delete the template. template.delete event is recorded in
        #    cloud.usage_event tables for this account
        # 4. Destroy the account

        # Register the First Template in the project
        self.debug("Register a Template in the project")
        builtin_info = get_builtin_template_info(self.apiclient, self.zone.id)
        self.services["templates"]["url"] = builtin_info[0]
        self.services["templates"]["hypervisor"] = builtin_info[1]
        self.services["templates"]["format"] = builtin_info[2]

        # Register new template
        template = Template.register(
                                        self.userapiclient,
                                        self.services["templates"],
                                        zoneid=self.zone.id,
                                        projectid=self.project.id
                                        )
        self.debug(
                "Registered a template of format: %s with ID: %s" % (
                                                                self.services["templates"]["format"],
                                                                template.id
                                                                ))

        # Wait for template status to be changed across
        time.sleep(self.services["sleep"])
        timeout = self.services["timeout"]
        while True:
            list_template_response = Template.list(
                                            self.apiclient,
                                            templatefilter='all',
                                            id=template.id,
                                            zoneid=self.zone.id,
                                            projectid=self.project.id,
                                            )
            if list_template_response[0].isready is True:
                break
            elif timeout == 0:
                raise Exception("Template state is not ready, it is %s" % list_template_response[0].isready)

            time.sleep(self.services["sleep"])
            timeout = timeout - 1
            
        #Verify template response to check whether template added successfully
        self.assertEqual(
                        isinstance(list_template_response, list),
                        True,
                        "Check for list template response return valid data"
                        )

        self.assertNotEqual(
                            len(list_template_response),
                            0,
                            "Check template available in List Templates"
                        )

        template_response = list_template_response[0]
        self.assertEqual(
                            template_response.isready,
                            True,
                            "Template state is not ready, it is %s" % template_response.isready
                        )
        
        self.debug("Created template with ID: %s" % template.id)
        
        # Delete template
        template.delete(self.apiclient)
        self.debug("Deleted template with ID: %s" % template.id)

        # Fetch project account ID from project UUID
        self.debug(
            "select project_account_id from projects where uuid = '%s';" \
                        % self.project.id)

        qresultset = self.dbclient.execute(
                        "select project_account_id from projects where uuid = '%s';" \
                        % self.project.id
                        )
        self.assertEqual(
                         isinstance(qresultset, list),
                         True,
                         "Check DB query result set for valid data"
                         )

        self.assertNotEqual(
                            len(qresultset),
                            0,
                            "Check DB Query result set"
                            )
        qresult = qresultset[0]

        account_id = qresult[0]
        self.debug("select type from usage_event where account_id = '%s';" \
                        % account_id)

        qresultset = self.dbclient.execute(
                        "select type from usage_event where account_id = '%s';" \
                        % account_id
                        )

        self.assertEqual(
                         isinstance(qresultset, list),
                         True,
                         "Check DB query result set for valid data"
                         )
        self.assertNotEqual(
                            len(qresultset),
                            0,
                            "Check DB Query result set"
                            )

        qresult = str(qresultset)
        self.debug("Query result: %s" % qresult)

        # Check for TEMPLATE.CREATE, TEMPLATE.DELETE in cloud.usage_event table
        self.assertEqual(
                            qresult.count('TEMPLATE.CREATE'),
                            1,
                            "Check TEMPLATE.CREATE event in events table"
                        )

        self.assertEqual(
                            qresult.count('TEMPLATE.DELETE'),
                            1,
                            "Check TEMPLATE.DELETE in events table"
                        )
        return


class TestISOUsage(cloudstackTestCase):

    @classmethod
    def setUpClass(cls):
        cls.testClient = super(TestISOUsage, cls).getClsTestClient()
        cls.api_client = cls.testClient.getApiClient()

        cls.services = Services().services
        # Get Zone, Domain and templates
        cls.domain = get_domain(cls.api_client)
        cls.zone = get_zone(cls.api_client, cls.testClient.getZoneForTests())
        cls.services['mode'] = cls.zone.networktype
        cls.services["server"]["zoneid"] = cls.zone.id
        cls.services["iso"]["zoneid"] = cls.zone.id
        # Create Account, ISO image etc
        cls.account = Account.create(
                            cls.api_client,
                            cls.services["account"],
                            domainid=cls.domain.id
                            )
        cls.services["account"] = cls.account.name
        cls.project = Project.create(
                                 cls.api_client,
                                 cls.services["project"],
                                 account=cls.account.name,
                                 domainid=cls.account.domainid
                                 )

        cls.iso = Iso.create(
                                cls.api_client,
                                cls.services["iso"],
                                projectid=cls.project.id
                            )
        try:
            # Wait till ISO gets downloaded
            cls.iso.download(cls.api_client)
        except Exception as e:
            raise Exception("%s: Failed to download ISO: %s" % (
                                                        e,
                                                        cls.iso.id
                                                        ))
        cls._cleanup = [
                        cls.project,
                        cls.account,
                        ]
        return

    @classmethod
    def tearDownClass(cls):
        try:
            #Cleanup resources used
            cleanup_resources(cls.api_client, cls._cleanup)
        except Exception as e:
            raise Exception("Warning: Exception during cleanup : %s" % e)
        return

    def setUp(self):
        self.apiclient = self.testClient.getApiClient()
        self.dbclient = self.testClient.getDbConnection()
        self.cleanup = []
        return

    def tearDown(self):
        try:
            #Clean up, terminate the created ISO images
            cleanup_resources(self.apiclient, self.cleanup)
        except Exception as e:
            raise Exception("Warning: Exception during cleanup : %s" % e)
        return

    @attr(tags=["advanced", "basic", "sg", "eip", "advancedns"], required_hardware="true")
    def test_01_ISO_usage(self):
        """Test Create/Delete a ISO and verify its usage is generated correctly
        """
        # Validate the following
        # 1. Create a account
        # 2. Upload a ISO from this account. ISO.create event is recorded in
        #    cloud.usage_event table for this account
        # 3. Delete the ISO. ISO.delete event is recorded in cloud.usage_event
        #    tables for this account
        # 4. Destroy the account

        # Delete the ISO
        self.debug("Deleting ISO with ID: %s" % self.iso.id)
        self.iso.delete(self.apiclient)

        # Fetch project account ID from project UUID
        self.debug(
            "select project_account_id from projects where uuid = '%s';" \
                        % self.project.id)

        qresultset = self.dbclient.execute(
                        "select project_account_id from projects where uuid = '%s';" \
                        % self.project.id
                        )
        self.assertEqual(
                         isinstance(qresultset, list),
                         True,
                         "Check DB query result set for valid data"
                         )

        self.assertNotEqual(
                            len(qresultset),
                            0,
                            "Check DB Query result set"
                            )
        qresult = qresultset[0]

        account_id = qresult[0]
        self.debug("select type from usage_event where account_id = '%s';" \
                        % account_id)

        qresultset = self.dbclient.execute(
                        "select type from usage_event where account_id = '%s';" \
                        % account_id
                        )

        self.assertEqual(
                         isinstance(qresultset, list),
                         True,
                         "Check DB query result set for valid data"
                         )

        self.assertNotEqual(
                            len(qresultset),
                            0,
                            "Check DB Query result set"
                            )

        qresult = str(qresultset)
        self.debug("Query result: %s" % qresult)

        imageStores = ImageStore.list(self.api_client,zoneid=self.zone.id)
        # Check for ISO.CREATE, ISO.DELETE events in cloud.usage_event table
        self.assertEqual(
                            qresult.count('ISO.CREATE'),
                            len(imageStores),
                            "Check ISO.CREATE event in events table"
                        )

        self.assertEqual(
                            qresult.count('ISO.DELETE'),
                            len(imageStores),
                            "Check ISO.DELETE in events table"
                        )
        return


class TestLBRuleUsage(cloudstackTestCase):

    @classmethod
    def setUpClass(cls):
        cls.testClient = super(TestLBRuleUsage, cls).getClsTestClient()
        cls.api_client = cls.testClient.getApiClient()

        cls.services = Services().services
        # Get Zone, Domain and templates
        cls.domain = get_domain(cls.api_client)
        cls.zone = get_zone(cls.api_client, cls.testClient.getZoneForTests())
        cls.services['mode'] = cls.zone.networktype
        template = get_template(
                            cls.api_client,
                            cls.zone.id,
                            cls.services["ostype"]
                            )
        cls.services["server"]["zoneid"] = cls.zone.id

        cls.services["template"] = template.id

        # Create VMs, LB Rules etc
        cls.account = Account.create(
                            cls.api_client,
                            cls.services["account"],
                            domainid=cls.domain.id
                            )

        cls.services["account"] = cls.account.name

        cls.project = Project.create(
                                 cls.api_client,
                                 cls.services["project"],
                                 account=cls.account.name,
                                 domainid=cls.account.domainid
                                 )

        cls.service_offering = ServiceOffering.create(
                                            cls.api_client,
                                            cls.services["service_offering"]
                                            )
        cls.virtual_machine = VirtualMachine.create(
                                cls.api_client,
                                cls.services["server"],
                                templateid=template.id,
                                serviceofferingid=cls.service_offering.id,
                                projectid=cls.project.id
                                )
        networks = Network.list(
                                cls.api_client,
                                projectid=cls.project.id,
                                listall=True
                                )
        if isinstance(networks, list):
            network = networks[0]
        else:
            raise Exception("List networks call failed")

        cls.public_ip_1 = PublicIPAddress.create(
                                           cls.api_client,
                                           zoneid=cls.zone.zoneid,
                                           services=cls.services["server"],
                                           networkid=network.id,
                                           projectid=cls.project.id
                                           )
        cls._cleanup = [
                        cls.project,
                        cls.service_offering,
                        cls.account,
                        ]
        return

    @classmethod
    def tearDownClass(cls):
        try:
            #Cleanup resources used
            cleanup_resources(cls.api_client, cls._cleanup)
        except Exception as e:
            raise Exception("Warning: Exception during cleanup : %s" % e)
        return

    def setUp(self):
        self.apiclient = self.testClient.getApiClient()
        self.dbclient = self.testClient.getDbConnection()
        self.cleanup = []
        return

    def tearDown(self):
        try:
            #Clean up, terminate the created instance, LB rules
            cleanup_resources(self.apiclient, self.cleanup)
        except Exception as e:
            raise Exception("Warning: Exception during cleanup : %s" % e)
        return

    @attr(tags=["advanced", "eip", "advancedns", "simulator"], required_hardware="false")
    def test_01_lb_usage(self):
        """Test Create/Delete a LB rule and verify correct usage is recorded
        """
        # Validate the following
        # 1. Acquire a IP for this account. lb.rule.create event is registered
        #    for this account in cloud.usage_event table
        # 2. Create a LB rule on the IP associated with this account
        # 3. Delete the created LB rule from the account. lb.rule.delete event
        #    is registered for this account in cloud.usage_event table
        # 4. Delete this account.

        self.debug(
            "Creating load balancer rule for public IP: %s" %
                                    self.public_ip_1.ipaddress.id)
        #Create Load Balancer rule and assign VMs to rule
        lb_rule = LoadBalancerRule.create(
                                          self.apiclient,
                                          self.services["lbrule"],
                                          self.public_ip_1.ipaddress.id,
                                          projectid=self.project.id
                                          )
        # Delete LB Rule
        self.debug("Deleting LB rule with ID: %s" % lb_rule.id)
        lb_rule.delete(self.apiclient)

        # Fetch project account ID from project UUID
        self.debug(
            "select project_account_id from projects where uuid = '%s';" \
                        % self.project.id)

        qresultset = self.dbclient.execute(
                        "select project_account_id from projects where uuid = '%s';" \
                        % self.project.id
                        )
        self.assertEqual(
                         isinstance(qresultset, list),
                         True,
                         "Check DB query result set for valid data"
                         )

        self.assertNotEqual(
                            len(qresultset),
                            0,
                            "Check DB Query result set"
                            )
        qresult = qresultset[0]

        account_id = qresult[0]
        self.debug("select type from usage_event where account_id = '%s';" \
                        % account_id)

        qresultset = self.dbclient.execute(
                        "select type from usage_event where account_id = '%s';" \
                        % account_id
                        )

        self.assertEqual(
                         isinstance(qresultset, list),
                         True,
                         "Check DB query result set for valid data"
                         )

        self.assertNotEqual(
                            len(qresultset),
                            0,
                            "Check DB Query result set"
                            )

        qresult = str(qresultset)
        self.debug("Query result: %s" % qresult)

        # Check for LB.CREATE, LB.DELETE in cloud.usage_event table
        self.assertEqual(
                            qresult.count('LB.CREATE'),
                            1,
                            "Check LB.CREATE event in events table"
                        )

        self.assertEqual(
                            qresult.count('LB.DELETE'),
                            1,
                            "Check LB.DELETE in events table"
                        )
        return


class TestSnapshotUsage(cloudstackTestCase):

    @classmethod
    def setUpClass(cls):
        cls.testClient = super(TestSnapshotUsage, cls).getClsTestClient()
        cls.api_client = cls.testClient.getApiClient()
        cls.hypervisor = cls.testClient.getHypervisorInfo()
        cls.snapshotSupported = True
        cls._cleanup = []
        if cls.hypervisor.lower() in ['hyperv', 'lxc']:
            cls.snapshotSupported = False
            return
        cls.services = Services().services
        # Get Zone, Domain and templates
        cls.domain = get_domain(cls.api_client)
        cls.zone = get_zone(cls.api_client, cls.testClient.getZoneForTests())
        cls.services['mode'] = cls.zone.networktype
        cls.hypervisor = cls.testClient.getHypervisorInfo()
        template = get_template(
                            cls.api_client,
                            cls.zone.id,
                            cls.services["ostype"]
                            )
        cls.services["server"]["zoneid"] = cls.zone.id

        cls.services["template"] = template.id

        # Create Account, VMs etc
        cls.account = Account.create(
                            cls.api_client,
                            cls.services["account"],
                            domainid=cls.domain.id
                            )

        cls.services["account"] = cls.account.name

        cls.project = Project.create(
                                 cls.api_client,
                                 cls.services["project"],
                                 account=cls.account.name,
                                 domainid=cls.account.domainid
                                 )

        cls.service_offering = ServiceOffering.create(
                                            cls.api_client,
                                            cls.services["service_offering"]
                                            )
        cls.virtual_machine = VirtualMachine.create(
                                cls.api_client,
                                cls.services["server"],
                                templateid=template.id,
                                serviceofferingid=cls.service_offering.id,
                                projectid=cls.project.id
                                )
        cls._cleanup = [
                        cls.project,
                        cls.service_offering,
                        cls.account,
                        ]
        return

    @classmethod
    def tearDownClass(cls):
        try:
            #Cleanup resources used
            cleanup_resources(cls.api_client, cls._cleanup)
        except Exception as e:
            raise Exception("Warning: Exception during cleanup : %s" % e)
        return

    def setUp(self):
        self.apiclient = self.testClient.getApiClient()
        self.dbclient = self.testClient.getDbConnection()
        self.cleanup = []
        if not self.snapshotSupported:
            self.skipTest("Snapshots are not supported on %s" % self.hypervisor)
        return

    def tearDown(self):
        try:
            #Clean up, terminate the created instance and snapshots
            cleanup_resources(self.apiclient, self.cleanup)
        except Exception as e:
            raise Exception("Warning: Exception during cleanup : %s" % e)
        return

    @attr(speed = "slow")
    @attr(tags=["advanced", "basic", "sg", "eip", "advancedns", "simulator"], required_hardware="false")
    def test_01_snapshot_usage(self):
        """Test Create/Delete a manual snap shot and verify
        correct usage is recorded
        """
        # Validate the following
        # 1. Create snapshot of the root disk  for this account.Snapshot.create
        #    event is there for the created account in cloud.usage_event table
        # 2. Destroy the snapshot after some time. Snapshot.delete event is
        #    generated for the destroyed Snapshot
        # 3. Delete the account

        # Get the Root disk of VM
        volumes = list_volumes(
                            self.apiclient,
                            projectid=self.project.id,
                            type='ROOT',
                            listall=True
                            )
        self.assertEqual(
                         isinstance(volumes, list),
                         True,
                         "Check if list volumes return a valid data"
                        )

        # Create a snapshot from the ROOTDISK
        self.debug("Creating snapshot from volume: %s" % volumes[0].id)
        snapshot = Snapshot.create(self.apiclient, volumes[0].id)

        # Delete snapshot Rule
        self.debug("Deleting snapshot: %s" % snapshot.id)
        snapshot.delete(self.apiclient)

        # Fetch project account ID from project UUID
        self.debug(
            "select project_account_id from projects where uuid = '%s';" \
                        % self.project.id)

        qresultset = self.dbclient.execute(
                        "select project_account_id from projects where uuid = '%s';" \
                        % self.project.id
                        )
        self.assertEqual(
                         isinstance(qresultset, list),
                         True,
                         "Check DB query result set for valid data"
                         )

        self.assertNotEqual(
                            len(qresultset),
                            0,
                            "Check DB Query result set"
                            )
        qresult = qresultset[0]

        account_id = qresult[0]
        self.debug("select type from usage_event where account_id = '%s';" \
                        % account_id)

        qresultset = self.dbclient.execute(
                        "select type from usage_event where account_id = '%s';" \
                        % account_id
                        )

        self.assertEqual(
                         isinstance(qresultset, list),
                         True,
                         "Check if database query returns a valid data"
                         )

        self.assertNotEqual(
                            len(qresultset),
                            0,
                            "Check DB Query result set"
                            )

        qresult = str(qresultset)
        self.debug("Query Result: %s" % qresult)

        # Check for SNAPSHOT.CREATE, SNAPSHOT.DELETE events in cloud.usage_event
        # table
        self.assertEqual(
                            qresult.count('SNAPSHOT.CREATE'),
                            1,
                            "Check SNAPSHOT.CREATE event in events table"
                        )

        self.assertEqual(
                            qresult.count('SNAPSHOT.DELETE'),
                            1,
                            "Check SNAPSHOT.DELETE in events table"
                        )
        return


class TestNatRuleUsage(cloudstackTestCase):

    @classmethod
    def setUpClass(cls):
        cls.testClient = super(TestNatRuleUsage, cls).getClsTestClient()
        cls.api_client = cls.testClient.getApiClient()

        cls.services = Services().services
        # Get Zone, Domain and templates
        cls.domain = get_domain(cls.api_client)
        cls.zone = get_zone(cls.api_client, cls.testClient.getZoneForTests())
        cls.services['mode'] = cls.zone.networktype
        template = get_template(
                            cls.api_client,
                            cls.zone.id,
                            cls.services["ostype"]
                            )
        cls.services["server"]["zoneid"] = cls.zone.id

        cls.services["template"] = template.id

        # Create VMs, NAT Rules etc
        cls.account = Account.create(
                            cls.api_client,
                            cls.services["account"],
                            domainid=cls.domain.id
                            )

        cls.services["account"] = cls.account.name

        cls.project = Project.create(
                                 cls.api_client,
                                 cls.services["project"],
                                 account=cls.account.name,
                                 domainid=cls.account.domainid
                                 )

        cls.service_offering = ServiceOffering.create(
                                            cls.api_client,
                                            cls.services["service_offering"]
                                            )
        cls.virtual_machine = VirtualMachine.create(
                                cls.api_client,
                                cls.services["server"],
                                templateid=template.id,
                                serviceofferingid=cls.service_offering.id,
                                projectid=cls.project.id
                                )
        networks = Network.list(
                                cls.api_client,
                                projectid=cls.project.id,
                                listall=True
                                )
        if isinstance(networks, list):
            network = networks[0]
        else:
            raise Exception("List networks call failed")

        cls.public_ip_1 = PublicIPAddress.create(
                                           cls.api_client,
                                           zoneid=cls.zone.zoneid,
                                           services=cls.services["server"],
                                           networkid=network.id,
                                           projectid=cls.project.id
                                           )
        cls._cleanup = [
                        cls.project,
                        cls.service_offering,
                        cls.account,
                        ]
        return

    @classmethod
    def tearDownClass(cls):
        try:
            #Cleanup resources used
            cleanup_resources(cls.api_client, cls._cleanup)
        except Exception as e:
            raise Exception("Warning: Exception during cleanup : %s" % e)
        return

    def setUp(self):
        self.apiclient = self.testClient.getApiClient()
        self.dbclient = self.testClient.getDbConnection()
        self.cleanup = []
        return

    def tearDown(self):
        try:
            #Clean up, terminate the created instance, NAT rules
            cleanup_resources(self.apiclient, self.cleanup)
        except Exception as e:
            raise Exception("Warning: Exception during cleanup : %s" % e)
        return

    @attr(tags=["advanced", "advancedns", "simulator"], required_hardware="false")
    def test_01_nat_usage(self):
        """Test Create/Delete a PF rule and verify correct usage is recorded
        """
        # Validate the following
        # 1. Acquire a IP for this account
        # 2. Create a PF rule on the IP associated with this account.
        #    NET.RULEADD event is registered for this account in
        #    cloud.usage_event table
        # 3. Delete the created PF rule from the account. NET.RULEDelete event
        #    is registered for this account in cloud.usage_event table
        # 4. Delete this account.

        self.debug("Creating NAT rule with public IP: %s" %
                                    self.public_ip_1.ipaddress.id)
        #Create NAT rule
        nat_rule = NATRule.create(
                        self.apiclient,
                        self.virtual_machine,
                        self.services["natrule"],
                        self.public_ip_1.ipaddress.id
                        )

        # Delete NAT Rule
        self.debug("Deleting NAT rule: %s" % nat_rule.id)
        nat_rule.delete(self.apiclient)

        # Fetch project account ID from project UUID
        self.debug(
            "select project_account_id from projects where uuid = '%s';" \
                        % self.project.id)

        qresultset = self.dbclient.execute(
                        "select project_account_id from projects where uuid = '%s';" \
                        % self.project.id
                        )
        self.assertEqual(
                         isinstance(qresultset, list),
                         True,
                         "Check DB query result set for valid data"
                         )

        self.assertNotEqual(
                            len(qresultset),
                            0,
                            "Check DB Query result set"
                            )
        qresult = qresultset[0]

        account_id = qresult[0]
        self.debug("select type from usage_event where account_id = '%s';" \
                        % account_id)

        qresultset = self.dbclient.execute(
                        "select type from usage_event where account_id = '%s';" \
                        % account_id
                        )

        self.assertEqual(
                         isinstance(qresultset, list),
                         True,
                         "Check DB query result set for valid data"
                         )
        self.assertNotEqual(
                            len(qresultset),
                            0,
                            "Check DB Query result set"
                            )

        qresult = str(qresultset)
        self.debug("Query result: %s" % qresult)

        # Check for NET.RULEADD, NET.RULEDELETE in cloud.usage_event table
        self.assertEqual(
                            qresult.count('NET.RULEADD'),
                            1,
                            "Check NET.RULEADD event in events table"
                        )

        self.assertEqual(
                            qresult.count('NET.RULEDELETE'),
                            1,
                            "Check NET.RULEDELETE in events table"
                        )
        return


class TestVpnUsage(cloudstackTestCase):

    @classmethod
    def setUpClass(cls):
        cls.testClient = super(TestVpnUsage, cls).getClsTestClient()
        cls.api_client = cls.testClient.getApiClient()

        cls.services = Services().services
        # Get Zone, Domain and templates
        cls.domain = get_domain(cls.api_client)
        cls.zone = get_zone(cls.api_client, cls.testClient.getZoneForTests())
        cls.services['mode'] = cls.zone.networktype
        template = get_template(
                            cls.api_client,
                            cls.zone.id,
                            cls.services["ostype"]
                            )
        cls.services["server"]["zoneid"] = cls.zone.id

        cls.services["template"] = template.id

        # Create Service offerings, VMs etc
        cls.account = Account.create(
                            cls.api_client,
                            cls.services["account"],
                            admin=True,
                            domainid=cls.domain.id
                            )

        cls.services["account"] = cls.account.name

        cls.project = Project.create(
                                 cls.api_client,
                                 cls.services["project"],
                                 account=cls.account.name,
                                 domainid=cls.account.domainid
                                 )

        cls.service_offering = ServiceOffering.create(
                                            cls.api_client,
                                            cls.services["service_offering"]
                                            )
        cls.virtual_machine = VirtualMachine.create(
                                cls.api_client,
                                cls.services["server"],
                                templateid=template.id,
                                serviceofferingid=cls.service_offering.id,
                                projectid=cls.project.id
                                )
        networks = Network.list(
                                cls.api_client,
                                projectid=cls.project.id,
                                listall=True
                                )
        if isinstance(networks, list):
            network = networks[0]
        else:
            raise Exception("List networks call failed")

        cls.public_ip = PublicIPAddress.create(
                                           cls.api_client,
                                           zoneid=cls.zone.zoneid,
                                           services=cls.services["server"],
                                           networkid=network.id,
                                           projectid=cls.project.id
                                           )
        cls._cleanup = [
                        cls.project,
                        cls.service_offering,
                        cls.account,
                        ]
        return

    @classmethod
    def tearDownClass(cls):
        try:
            #Cleanup resources used
            cleanup_resources(cls.api_client, cls._cleanup)
        except Exception as e:
            raise Exception("Warning: Exception during cleanup : %s" % e)
        return

    def setUp(self):
        self.apiclient = self.testClient.getApiClient()
        self.dbclient = self.testClient.getDbConnection()
        self.cleanup = []
        return

    def tearDown(self):
        try:
            #Clean up, terminate the created instance, VPN users
            cleanup_resources(self.apiclient, self.cleanup)
        except Exception as e:
            raise Exception("Warning: Exception during cleanup : %s" % e)
        return

    @attr(tags=["advanced", "advancedns", "simulator"], required_hardware="false")
    def test_01_vpn_usage(self):
        """Test Create/Delete a VPN and verify correct usage is recorded
        """
        # Validate the following
        # 1. Enable VPN for this IP. vpn.add.user event is registered for this
        #    account in cloud.usage_event table
        # 2. Add user to this vpn
        # 3. Delete user for this VPN. vpn.user.delete event is registered for
        #    this account in cloud.usage_event table
        # 4. Delete this account.

        self.debug("Created VPN with public IP: %s" %
                                    self.public_ip.ipaddress.id)
        #Assign VPN to Public IP
        vpn = Vpn.create(
                        self.apiclient,
                        self.public_ip.ipaddress.id,
                        projectid=self.project.id
                        )

        self.debug("Created VPN user for account: %s" %
                                    self.account.name)

        vpnuser = VpnUser.create(
                                 self.apiclient,
                                 self.services["vpn_user"]["username"],
                                 self.services["vpn_user"]["password"],
                                 projectid=self.project.id
                                 )

        # Remove VPN user
        self.debug("Deleting VPN user: %s" % vpnuser.id)
        vpnuser.delete(
                       self.apiclient,
                       projectid=self.project.id
                       )

        # Delete VPN access
        self.debug("Deleting VPN: %s" % vpn.publicipid)
        vpn.delete(self.apiclient)

        # Fetch project account ID from project UUID
        self.debug(
            "select project_account_id from projects where uuid = '%s';" \
                        % self.project.id)

        qresultset = self.dbclient.execute(
                        "select project_account_id from projects where uuid = '%s';" \
                        % self.project.id
                        )
        self.assertEqual(
                         isinstance(qresultset, list),
                         True,
                         "Check DB query result set for valid data"
                         )

        self.assertNotEqual(
                            len(qresultset),
                            0,
                            "Check DB Query result set"
                            )
        qresult = qresultset[0]

        account_id = qresult[0]
        self.debug("select type from usage_event where account_id = '%s';" \
                        % account_id)

        qresultset = self.dbclient.execute(
                        "select type from usage_event where account_id = '%s';" \
                        % account_id
                        )

        self.assertEqual(
                         isinstance(qresultset, list),
                         True,
                         "Check DB query result set for valid data"
                         )
        self.assertNotEqual(
                            len(qresultset),
                            0,
                            "Check DB Query result set"
                            )

        qresult = str(qresultset)
        self.debug("Query result: %s" % qresult)

        # Check for VPN user related events
        self.assertEqual(
                            qresult.count('VPN.USER.ADD'),
                            1,
                            "Check VPN.USER.ADD event in events table"
                        )

        self.assertEqual(
                            qresult.count('VPN.USER.ADD'),
                            1,
                            "Check VPN.USER.ADD in events table"
                        )
        return