Source code for yardstick.orchestrator.heat

##############################################################################
# Copyright (c) 2015 Ericsson AB and others.
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
##############################################################################

""" Heat template and stack management
"""

import os
import time
import datetime
import getpass
import socket
import logging
import pkg_resources
import json
import heatclient.client
import keystoneclient

from yardstick.common import template_format


log = logging.getLogger(__name__)


[docs]class HeatObject(object): ''' base class for template and stack''' def __init__(self): self._keystone_client = None self._heat_client = None self.uuid = None def _get_keystone_client(self): '''returns a keystone client instance''' if self._keystone_client is None: self._keystone_client = keystoneclient.v2_0.client.Client( auth_url=os.environ.get('OS_AUTH_URL'), username=os.environ.get('OS_USERNAME'), password=os.environ.get('OS_PASSWORD'), tenant_name=os.environ.get('OS_TENANT_NAME'), cacert=os.environ.get('OS_CACERT')) return self._keystone_client def _get_heat_client(self): '''returns a heat client instance''' if self._heat_client is None: keystone = self._get_keystone_client() heat_endpoint = keystone.service_catalog.url_for( service_type='orchestration') self._heat_client = heatclient.client.Client( '1', endpoint=heat_endpoint, token=keystone.auth_token) return self._heat_client
[docs] def status(self): '''returns stack state as a string''' heat = self._get_heat_client() stack = heat.stacks.get(self.uuid) return getattr(stack, 'stack_status')
[docs]class HeatStack(HeatObject): ''' Represents a Heat stack (deployed template) ''' stacks = [] def __init__(self, name): super(HeatStack, self).__init__() self.uuid = None self.name = name self.outputs = None HeatStack.stacks.append(self) @staticmethod
[docs] def stacks_exist(): '''check if any stack has been deployed''' return len(HeatStack.stacks) > 0
def _delete(self): '''deletes a stack from the target cloud using heat''' if self.uuid is None: return log.info("Deleting stack '%s', uuid:%s", self.name, self.uuid) heat = self._get_heat_client() template = heat.stacks.get(self.uuid) start_time = time.time() template.delete() status = self.status() while status != u'DELETE_COMPLETE': log.debug("stack state %s", status) if status == u'DELETE_FAILED': raise RuntimeError( heat.stacks.get(self.uuid).stack_status_reason) time.sleep(2) status = self.status() end_time = time.time() log.info("Deleted stack '%s' in %d secs", self.name, end_time - start_time) self.uuid = None
[docs] def delete(self, block=True, retries=3): '''deletes a stack in the target cloud using heat (with retry) Sometimes delete fail with "InternalServerError" and the next attempt succeeds. So it is worthwhile to test a couple of times. ''' if self.uuid is None: return if not block: self._delete() return i = 0 while i < retries: try: self._delete() break except RuntimeError as err: log.warn(err.args) time.sleep(2) i += 1 # if still not deleted try once more and let it fail everything if self.uuid is not None: self._delete() HeatStack.stacks.remove(self)
@staticmethod
[docs] def delete_all(): for stack in HeatStack.stacks[:]: stack.delete()
[docs] def update(self): '''update a stack''' raise RuntimeError("not implemented")
[docs]class HeatTemplate(HeatObject): '''Describes a Heat template and a method to deploy template to a stack''' def _init_template(self): self._template = {} self._template['heat_template_version'] = '2013-05-23' timestamp = datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S") self._template['description'] = \ '''Stack built by the yardstick framework for %s on host %s %s. All referred generated resources are prefixed with the template name (i.e. %s).''' % (getpass.getuser(), socket.gethostname(), timestamp, self.name) # short hand for resources part of template self.resources = self._template['resources'] = {} self._template['outputs'] = {} def __init__(self, name, template_file=None, heat_parameters=None): super(HeatTemplate, self).__init__() self.name = name self.state = "NOT_CREATED" self.keystone_client = None self.heat_client = None self.heat_parameters = {} # heat_parameters is passed to heat in stack create, empty dict when # yardstick creates the template (no get_param in resources part) if heat_parameters: self.heat_parameters = heat_parameters if template_file: with open(template_file) as stream: print "Parsing external template:", template_file template_str = stream.read() self._template = template_format.parse(template_str) self._parameters = heat_parameters else: self._init_template() # holds results of requested output after deployment self.outputs = {} log.debug("template object '%s' created", name)
[docs] def add_network(self, name): '''add to the template a Neutron Net''' log.debug("adding Neutron::Net '%s'", name) self.resources[name] = { 'type': 'OS::Neutron::Net', 'properties': {'name': name} }
[docs] def add_subnet(self, name, network, cidr): '''add to the template a Neutron Subnet''' log.debug("adding Neutron::Subnet '%s' in network '%s', cidr '%s'", name, network, cidr) self.resources[name] = { 'type': 'OS::Neutron::Subnet', 'depends_on': network, 'properties': { 'name': name, 'cidr': cidr, 'network_id': {'get_resource': network} } } self._template['outputs'][name] = { 'description': 'subnet %s ID' % name, 'value': {'get_resource': name} }
[docs] def add_router(self, name, ext_gw_net, subnet_name): '''add to the template a Neutron Router and interface''' log.debug("adding Neutron::Router:'%s', gw-net:'%s'", name, ext_gw_net) self.resources[name] = { 'type': 'OS::Neutron::Router', 'depends_on': [subnet_name], 'properties': { 'name': name, 'external_gateway_info': { 'network': ext_gw_net } } }
[docs] def add_router_interface(self, name, router_name, subnet_name): '''add to the template a Neutron RouterInterface and interface''' log.debug("adding Neutron::RouterInterface '%s' router:'%s', " "subnet:'%s'", name, router_name, subnet_name) self.resources[name] = { 'type': 'OS::Neutron::RouterInterface', 'depends_on': [router_name, subnet_name], 'properties': { 'router_id': {'get_resource': router_name}, 'subnet_id': {'get_resource': subnet_name} } }
[docs] def add_port(self, name, network_name, subnet_name, sec_group_id=None): '''add to the template a named Neutron Port''' log.debug("adding Neutron::Port '%s', network:'%s', subnet:'%s', " "secgroup:%s", name, network_name, subnet_name, sec_group_id) self.resources[name] = { 'type': 'OS::Neutron::Port', 'depends_on': [subnet_name], 'properties': { 'name': name, 'fixed_ips': [{'subnet': {'get_resource': subnet_name}}], 'network_id': {'get_resource': network_name}, 'replacement_policy': 'AUTO', } } if sec_group_id: self.resources[name]['depends_on'].append(sec_group_id) self.resources[name]['properties']['security_groups'] = \ [sec_group_id] self._template['outputs'][name] = { 'description': 'Address for interface %s' % name, 'value': {'get_attr': [name, 'fixed_ips', 0, 'ip_address']} }
[docs] def add_floating_ip(self, name, network_name, port_name, router_if_name, secgroup_name=None): '''add to the template a Neutron FloatingIP resource see: https://bugs.launchpad.net/heat/+bug/1299259 ''' log.debug("adding Neutron::FloatingIP '%s', network '%s', port '%s', " "rif '%s'", name, network_name, port_name, router_if_name) self.resources[name] = { 'type': 'OS::Neutron::FloatingIP', 'depends_on': [port_name, router_if_name], 'properties': { 'floating_network': network_name, 'port_id': {'get_resource': port_name} } } if secgroup_name: self.resources[name]["depends_on"].append(secgroup_name) self._template['outputs'][name] = { 'description': 'floating ip %s' % name, 'value': {'get_attr': [name, 'floating_ip_address']} }
[docs] def add_keypair(self, name): '''add to the template a Nova KeyPair''' log.debug("adding Nova::KeyPair '%s'", name) self.resources[name] = { 'type': 'OS::Nova::KeyPair', 'properties': { 'name': name, 'public_key': pkg_resources.resource_string( 'yardstick.resources', 'files/yardstick_key.pub') } }
[docs] def add_servergroup(self, name, policy): '''add to the template a Nova ServerGroup''' log.debug("adding Nova::ServerGroup '%s', policy '%s'", name, policy) if policy not in ["anti-affinity", "affinity"]: raise ValueError(policy) self.resources[name] = { 'type': 'OS::Nova::ServerGroup', 'properties': { 'name': name, 'policies': [policy] } } self._template['outputs'][name] = { 'description': 'ID Server Group %s' % name, 'value': {'get_resource': name} }
[docs] def add_security_group(self, name): '''add to the template a Neutron SecurityGroup''' log.debug("adding Neutron::SecurityGroup '%s'", name) self.resources[name] = { 'type': 'OS::Neutron::SecurityGroup', 'properties': { 'name': name, 'description': "Group allowing icmp and upd/tcp on all ports", 'rules': [ {'remote_ip_prefix': '0.0.0.0/0', 'protocol': 'tcp'}, {'remote_ip_prefix': '0.0.0.0/0', 'protocol': 'udp'}, {'remote_ip_prefix': '0.0.0.0/0', 'protocol': 'icmp'} ] } } self._template['outputs'][name] = { 'description': 'ID of Security Group', 'value': {'get_resource': name} }
[docs] def add_server(self, name, image, flavor, ports=None, networks=None, scheduler_hints=None, user=None, key_name=None, user_data=None, metadata=None, additional_properties=None): '''add to the template a Nova Server''' log.debug("adding Nova::Server '%s', image '%s', flavor '%s', " "ports %s", name, image, flavor, ports) self.resources[name] = { 'type': 'OS::Nova::Server' } server_properties = { 'name': name, 'image': image, 'flavor': flavor, 'networks': [] # list of dictionaries } if user: server_properties['admin_user'] = user if key_name: self.resources[name]['depends_on'] = [key_name] server_properties['key_name'] = {'get_resource': key_name} if ports: self.resources[name]['depends_on'] = ports for port in ports: server_properties['networks'].append( {'port': {'get_resource': port}} ) if networks: for i in range(len(networks)): server_properties['networks'].append({'network': networks[i]}) if scheduler_hints: server_properties['scheduler_hints'] = scheduler_hints if user_data: server_properties['user_data'] = user_data if metadata: assert type(metadata) is dict server_properties['metadata'] = metadata if additional_properties: assert type(additional_properties) is dict for prop in additional_properties: server_properties[prop] = additional_properties[prop] server_properties['config_drive'] = True self.resources[name]['properties'] = server_properties self._template['outputs'][name] = { 'description': 'VM UUID', 'value': {'get_resource': name} }
[docs] def create(self, block=True): '''creates a template in the target cloud using heat returns a dict with the requested output values from the template''' log.info("Creating stack '%s'", self.name) # create stack early to support cleanup, e.g. ctrl-c while waiting stack = HeatStack(self.name) heat = self._get_heat_client() json_template = json.dumps(self._template) start_time = time.time() stack.uuid = self.uuid = heat.stacks.create( stack_name=self.name, template=json_template, parameters=self.heat_parameters)['stack']['id'] status = self.status() if block: while status != u'CREATE_COMPLETE': log.debug("stack state %s", status) if status == u'CREATE_FAILED': raise RuntimeError(getattr(heat.stacks.get(self.uuid), 'stack_status_reason')) time.sleep(2) status = self.status() end_time = time.time() outputs = getattr(heat.stacks.get(self.uuid), 'outputs') for output in outputs: self.outputs[output["output_key"].encode("ascii")] = \ output["output_value"].encode("ascii") log.info("Created stack '%s' in %d secs", self.name, end_time - start_time) stack.outputs = self.outputs return stack