caa1bd8602
This produces a nested exception like: 'ValueError: resources.nested.resources.my_server: it is broken, sorry' This re-uses the path mechanism that StackValidationFailed exception uses. Change-Id: Id5204c15ee96784e04522ab3c5a8e66900f9a1d3 Closes-bug: 1459837
135 lines
4.3 KiB
Python
135 lines
4.3 KiB
Python
#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import eventlet
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from heat.common.i18n import _
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from heat.engine import attributes
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from heat.engine import properties
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from heat.engine import resource
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from heat.engine import support
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from oslo_log import log as logging
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LOG = logging.getLogger(__name__)
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class TestResource(resource.Resource):
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'''
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A resource which stores the string value that was provided.
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This resource is to be used only for testing.
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It has control knobs such as 'update_replace', 'fail', 'wait_secs'
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'''
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support_status = support.SupportStatus(version='2014.1')
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PROPERTIES = (
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VALUE, UPDATE_REPLACE, FAIL, WAIT_SECS
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) = (
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'value', 'update_replace', 'fail', 'wait_secs'
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)
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ATTRIBUTES = (
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OUTPUT,
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) = (
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'output',
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)
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properties_schema = {
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VALUE: properties.Schema(
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properties.Schema.STRING,
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_('The input string to be stored.'),
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default='test_string',
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update_allowed=True
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),
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FAIL: properties.Schema(
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properties.Schema.BOOLEAN,
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_('Value which can be set to fail the resource operation '
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'to test failure scenarios.'),
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update_allowed=True,
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default=False
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),
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UPDATE_REPLACE: properties.Schema(
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properties.Schema.BOOLEAN,
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_('Value which can be set to trigger update replace for '
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'the particular resource'),
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update_allowed=True,
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default=False
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),
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WAIT_SECS: properties.Schema(
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properties.Schema.NUMBER,
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_('Value which can be set for resource to wait after an action '
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'is performed.'),
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update_allowed=True,
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default=0,
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),
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}
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attributes_schema = {
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OUTPUT: attributes.Schema(
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_('The string that was stored. This value is '
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'also available by referencing the resource.'),
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cache_mode=attributes.Schema.CACHE_NONE
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),
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}
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def handle_create(self):
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value = self.properties.get(self.VALUE)
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fail_prop = self.properties.get(self.FAIL)
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sleep_secs = self.properties.get(self.WAIT_SECS)
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self.data_set('value', value, redact=False)
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self.resource_id_set(self.physical_resource_name())
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# sleep for specified time
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if sleep_secs:
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LOG.debug("Resource %s sleeping for %s seconds",
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self.name, sleep_secs)
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eventlet.sleep(sleep_secs)
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# emulate failure
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if fail_prop:
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raise ValueError("Test Resource failed %s" % self.name)
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def handle_update(self, json_snippet=None, tmpl_diff=None, prop_diff=None):
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value = prop_diff.get(self.VALUE)
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new_prop = json_snippet._properties
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if value:
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update_replace = new_prop.get(self.UPDATE_REPLACE, False)
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if update_replace:
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raise resource.UpdateReplace(self.name)
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else:
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fail_prop = new_prop.get(self.FAIL, False)
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sleep_secs = new_prop.get(self.WAIT_SECS, 0)
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# emulate failure
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if fail_prop:
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raise Exception("Test Resource failed %s", self.name)
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# update in place
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self.data_set('value', value, redact=False)
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if sleep_secs:
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LOG.debug("Update of Resource %s sleeping for %s seconds",
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self.name, sleep_secs)
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eventlet.sleep(sleep_secs)
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def _resolve_attribute(self, name):
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if name == self.OUTPUT:
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return self.data().get('value')
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def resource_mapping():
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return {
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'OS::Heat::TestResource': TestResource,
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}
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