diff options
Diffstat (limited to 'snaps/openstack/create_stack.py')
| -rw-r--r-- | snaps/openstack/create_stack.py | 152 |
1 files changed, 110 insertions, 42 deletions
diff --git a/snaps/openstack/create_stack.py b/snaps/openstack/create_stack.py index 454cb18..ffe87a5 100644 --- a/snaps/openstack/create_stack.py +++ b/snaps/openstack/create_stack.py @@ -18,8 +18,10 @@ import time from heatclient.exc import HTTPNotFound -from snaps.openstack.create_network import ( - OpenStackNetwork, NetworkSettings, SubnetSettings) +from snaps.openstack.create_instance import OpenStackVmInstance +from snaps.openstack.utils import nova_utils, settings_utils, glance_utils + +from snaps.openstack.create_network import OpenStackNetwork from snaps.openstack.utils import heat_utils, neutron_utils __author__ = 'spisarski' @@ -31,6 +33,7 @@ POLL_INTERVAL = 3 STATUS_CREATE_FAILED = 'CREATE_FAILED' STATUS_CREATE_COMPLETE = 'CREATE_COMPLETE' STATUS_DELETE_COMPLETE = 'DELETE_COMPLETE' +STATUS_DELETE_FAILED = 'DELETE_FAILED' class OpenStackHeatStack: @@ -38,15 +41,33 @@ class OpenStackHeatStack: Class responsible for creating an heat stack in OpenStack """ - def __init__(self, os_creds, stack_settings): + def __init__(self, os_creds, stack_settings, image_settings=None, + keypair_settings=None): """ Constructor :param os_creds: The OpenStack connection credentials :param stack_settings: The stack settings + :param image_settings: A list of ImageSettings objects that were used + for spawning this stack + :param image_settings: A list of ImageSettings objects that were used + for spawning this stack + :param keypair_settings: A list of KeypairSettings objects that were + used for spawning this stack :return: """ self.__os_creds = os_creds self.stack_settings = stack_settings + + if image_settings: + self.image_settings = image_settings + else: + self.image_settings = None + + if image_settings: + self.keypair_settings = keypair_settings + else: + self.keypair_settings = None + self.__stack = None self.__heat_cli = None @@ -93,11 +114,39 @@ class OpenStackHeatStack: """ if self.__stack: try: + logger.info('Deleting stack - %s' + self.__stack.name) + heat_utils.delete_stack(self.__heat_cli, self.__stack) + + try: + self.stack_deleted(block=True) + except StackError as e: + # Stack deletion seems to fail quite a bit + logger.warn('Stack did not delete properly - %s', e) + + # Delete VMs first + for vm_inst_creator in self.get_vm_inst_creators(): + try: + vm_inst_creator.clean() + if not vm_inst_creator.vm_deleted(block=True): + logger.warn('Unable to deleted VM - %s', + vm_inst_creator.get_vm_inst().name) + except: + logger.warn('Unexpected error deleting VM - %s ', + vm_inst_creator.get_vm_inst().name) + + logger.info('Attempting to delete again stack - %s', + self.__stack.name) + + # Delete Stack again heat_utils.delete_stack(self.__heat_cli, self.__stack) + deleted = self.stack_deleted(block=True) + if not deleted: + raise StackError( + 'Stack could not be deleted ' + self.__stack.name) except HTTPNotFound: pass - self.__stack = None + self.__stack = None def get_stack(self): """ @@ -113,7 +162,7 @@ class OpenStackHeatStack: object :return: """ - return heat_utils.get_stack_outputs(self.__heat_cli, self.__stack.id) + return heat_utils.get_outputs(self.__heat_cli, self.__stack) def get_status(self): """ @@ -137,7 +186,23 @@ class OpenStackHeatStack: if not timeout: timeout = self.stack_settings.stack_create_timeout return self._stack_status_check(STATUS_CREATE_COMPLETE, block, timeout, - poll_interval) + poll_interval, STATUS_CREATE_FAILED) + + def stack_deleted(self, block=False, timeout=None, + poll_interval=POLL_INTERVAL): + """ + Returns true when the stack status returns the value of + expected_status_code + :param block: When true, thread will block until active or timeout + value in seconds has been exceeded (False) + :param timeout: The timeout value + :param poll_interval: The polling interval in seconds + :return: T/F + """ + if not timeout: + timeout = self.stack_settings.stack_create_timeout + return self._stack_status_check(STATUS_DELETE_COMPLETE, block, timeout, + poll_interval, STATUS_DELETE_FAILED) def get_network_creators(self): """ @@ -153,7 +218,7 @@ class OpenStackHeatStack: self.__heat_cli, neutron, self.__stack) for stack_network in stack_networks: - net_settings = self.__create_network_settings( + net_settings = settings_utils.create_network_settings( neutron, stack_network) net_creator = OpenStackNetwork(self.__os_creds, net_settings) out.append(net_creator) @@ -161,45 +226,41 @@ class OpenStackHeatStack: return out - def __create_network_settings(self, neutron, network): + def get_vm_inst_creators(self, heat_keypair_option=None): """ - Returns a NetworkSettings object - :param neutron: the neutron client - :param network: a SNAPS-OO Network domain object - :return: + Returns a list of VM Instance creator objects as configured by the heat + template + :return: list() of OpenStackVmInstance objects """ - return NetworkSettings( - name=network.name, network_type=network.type, - subnet_settings=self.__create_subnet_settings(neutron, network)) - def __create_subnet_settings(self, neutron, network): - """ - Returns a list of SubnetSettings objects for a given network - :param neutron: the OpenStack neutron client - :param network: the SNAPS-OO Network domain object - :return: a list - """ out = list() + nova = nova_utils.nova_client(self.__os_creds) + + stack_servers = heat_utils.get_stack_servers( + self.__heat_cli, nova, self.__stack) + + neutron = neutron_utils.neutron_client(self.__os_creds) + glance = glance_utils.glance_client(self.__os_creds) + + for stack_server in stack_servers: + vm_inst_settings = settings_utils.create_vm_inst_settings( + nova, neutron, stack_server) + image_settings = settings_utils.determine_image_settings( + glance, stack_server, self.image_settings) + keypair_settings = settings_utils.determine_keypair_settings( + self.__heat_cli, self.__stack, stack_server, + keypair_settings=self.keypair_settings, + priv_key_key=heat_keypair_option) + vm_inst_creator = OpenStackVmInstance( + self.__os_creds, vm_inst_settings, image_settings, + keypair_settings) + out.append(vm_inst_creator) + vm_inst_creator.create(cleanup=True) - subnets = neutron_utils.get_subnets_by_network(neutron, network) - for subnet in subnets: - kwargs = dict() - kwargs['cidr'] = subnet.cidr - kwargs['ip_version'] = subnet.ip_version - kwargs['name'] = subnet.name - kwargs['start'] = subnet.start - kwargs['end'] = subnet.end - kwargs['gateway_ip'] = subnet.gateway_ip - kwargs['enable_dhcp'] = subnet.enable_dhcp - kwargs['dns_nameservers'] = subnet.dns_nameservers - kwargs['host_routes'] = subnet.host_routes - kwargs['ipv6_ra_mode'] = subnet.ipv6_ra_mode - kwargs['ipv6_address_mode'] = subnet.ipv6_address_mode - out.append(SubnetSettings(**kwargs)) return out def _stack_status_check(self, expected_status_code, block, timeout, - poll_interval): + poll_interval, fail_status): """ Returns true when the stack status returns the value of expected_status_code @@ -209,6 +270,7 @@ class OpenStackHeatStack: value in seconds has been exceeded (False) :param timeout: The timeout value :param poll_interval: The polling interval in seconds + :param fail_status: Returns false if the fail_status code is found :return: T/F """ # sleep and wait for stack status change @@ -218,7 +280,7 @@ class OpenStackHeatStack: start = time.time() - timeout while timeout > time.time() - start: - status = self._status(expected_status_code) + status = self._status(expected_status_code, fail_status) if status: logger.debug( 'Stack is active with name - ' + self.stack_settings.name) @@ -234,7 +296,7 @@ class OpenStackHeatStack: 'Timeout checking for stack status for ' + expected_status_code) return False - def _status(self, expected_status_code): + def _status(self, expected_status_code, fail_status=STATUS_CREATE_FAILED): """ Returns True when active else False :param expected_status_code: stack status evaluated with this string @@ -247,8 +309,8 @@ class OpenStackHeatStack: 'Cannot stack status for stack with ID - ' + self.__stack.id) return False - if status == STATUS_CREATE_FAILED: - raise StackCreationError('Stack had an error during deployment') + if fail_status and status == fail_status: + raise StackError('Stack had an error') logger.debug('Stack status is - ' + status) return status == expected_status_code @@ -299,3 +361,9 @@ class StackCreationError(Exception): """ Exception to be thrown when an stack cannot be created """ + + +class StackError(Exception): + """ + General exception + """ |