def validate(self):
super(RemoteStack, self).validate()
try:
self.heat()
except Exception as ex:
exc_info = dict(region=self._region_name, exc=six.text_type(ex))
msg = _('Cannot establish connection to Heat endpoint at region '
'"%(region)s" due to "%(exc)s"') % exc_info
raise exception.StackValidationFailed(message=msg)
try:
params = self.properties[self.PARAMETERS]
env = environment.get_child_environment(self.stack.env, params)
tmpl = template_format.parse(self.properties[self.TEMPLATE])
args = {
'template': tmpl,
'files': self.stack.t.files,
'environment': env.user_env_as_dict(),
}
self.heat().stacks.validate(**args)
except Exception as ex:
exc_info = dict(region=self._region_name, exc=six.text_type(ex))
LOG.error(_LE('exception: %s'), type(ex))
msg = _('Failed validating stack template using Heat endpoint at '
'region "%(region)s" due to "%(exc)s"') % exc_info
raise exception.StackValidationFailed(message=msg)
def validate(self):
super(RemoteStack, self).validate()
try:
self.heat()
except Exception as ex:
exc_info = dict(region=self._region_name, exc=six.text_type(ex))
msg = _('Cannot establish connection to Heat endpoint at region '
'"%(region)s" due to "%(exc)s"') % exc_info
raise exception.StackValidationFailed(message=msg)
try:
params = self.properties[self.PARAMETERS]
env = environment.get_child_environment(self.stack.env, params)
tmpl = template_format.parse(self.properties[self.TEMPLATE])
args = {
'template': tmpl,
'files': self.stack.t.files,
'environment': env.user_env_as_dict(),
}
self.heat().stacks.validate(**args)
except Exception as ex:
exc_info = dict(region=self._region_name, exc=six.text_type(ex))
LOG.error(_LE('exception: %s'), type(ex))
msg = _('Failed validating stack template using Heat endpoint at '
'region "%(region)s" due to "%(exc)s"') % exc_info
raise exception.StackValidationFailed(message=msg)
def generate_class_from_template(name, data, env):
tmpl = template.Template(template_format.parse(data))
props, attrs = TemplateResource.get_schemas(tmpl, env.param_defaults)
cls = type(name, (TemplateResource, ), {
'properties_schema': props,
'attributes_schema': attrs
})
return cls
def get_parsed_template(self):
if cfg.CONF.loadbalancer_template:
with open(cfg.CONF.loadbalancer_template) as templ_fd:
LOG.info(_LI('Using custom loadbalancer template %s'),
cfg.CONF.loadbalancer_template)
contents = templ_fd.read()
else:
contents = lb_template_default
return template_format.parse(contents)
def get_parsed_template(self):
if cfg.CONF.loadbalancer_template:
with open(cfg.CONF.loadbalancer_template) as templ_fd:
LOG.info(_LI('Using custom loadbalancer template %s'),
cfg.CONF.loadbalancer_template)
contents = templ_fd.read()
else:
contents = lb_template_default
return template_format.parse(contents)
def child_template(self):
try:
template_data = urlfetch.get(self.properties[self.TEMPLATE_URL])
except (exceptions.RequestException, IOError) as r_exc:
raise ValueError(
_("Could not fetch remote template '%(url)s': "
"%(exc)s") % {
'url': self.properties[self.TEMPLATE_URL],
'exc': r_exc
})
return template_format.parse(template_data)
def handle_create(self):
params = self.properties[self.PARAMETERS]
env = environment.get_child_environment(self.stack.env, params)
tmpl = template_format.parse(self.properties[self.TEMPLATE])
args = {
'stack_name': self.physical_resource_name_or_FnGetRefId(),
'template': tmpl,
'timeout_mins': self.properties[self.TIMEOUT],
'disable_rollback': True,
'parameters': params,
'files': self.stack.t.files,
'environment': env.user_env_as_dict(),
}
remote_stack_id = self.heat().stacks.create(**args)['stack']['id']
self.resource_id_set(remote_stack_id)
def handle_create(self):
params = self.properties[self.PARAMETERS]
env = environment.get_child_environment(self.stack.env, params)
tmpl = template_format.parse(self.properties[self.TEMPLATE])
args = {
'stack_name': self.physical_resource_name_or_FnGetRefId(),
'template': tmpl,
'timeout_mins': self.properties[self.TIMEOUT],
'disable_rollback': True,
'parameters': params,
'files': self.stack.t.files,
'environment': env.user_env_as_dict(),
}
remote_stack_id = self.heat().stacks.create(**args)['stack']['id']
self.resource_id_set(remote_stack_id)
def update_with_template(self,
child_template,
user_params=None,
timeout_mins=None):
"""Update the nested stack with the new template."""
if self.id is None:
self._store()
nested_stack = self.nested()
if nested_stack is None:
# if the create failed for some reason and the nested
# stack was not created, we need to create an empty stack
# here so that the update will work.
def _check_for_completion():
while not self.check_create_complete():
yield
empty_temp = template_format.parse(
"heat_template_version: '2013-05-23'")
self.create_with_template(empty_temp, {})
checker = scheduler.TaskRunner(_check_for_completion)
checker(timeout=self.stack.timeout_secs())
nested_stack = self.nested()
if timeout_mins is None:
timeout_mins = self.stack.timeout_mins
kwargs = self._stack_kwargs(user_params, child_template)
cookie = {
'previous': {
'updated_at': nested_stack.updated_time,
'state': nested_stack.state
}
}
kwargs.update({
'stack_identity': dict(nested_stack.identifier()),
'args': {
rpc_api.PARAM_TIMEOUT: timeout_mins
}
})
with self.translate_remote_exceptions:
self.rpc_client().update_stack(self.context, **kwargs)
return cookie
def handle_update(self, json_snippet, tmpl_diff, prop_diff):
# Nested stack template may be changed even if the prop_diff is empty.
self.properties = json_snippet.properties(self.properties_schema,
self.context)
try:
template_data = urlfetch.get(self.properties[self.TEMPLATE_URL])
except (exceptions.RequestException, IOError) as r_exc:
raise ValueError(
_("Could not fetch remote template '%(url)s': "
"%(exc)s") % {
'url': self.properties[self.TEMPLATE_URL],
'exc': r_exc
})
template = template_format.parse(template_data)
return self.update_with_template(template,
self.properties[self.PARAMETERS],
self.properties[self.TIMEOUT_IN_MINS])
def template(self):
"""Get template file contents.
Get template file contents, either inline, from stack adopt data or
from a URL, in JSON or YAML format.
"""
template_data = None
if rpc_api.PARAM_ADOPT_STACK_DATA in self.data:
adopt_data = self.data[rpc_api.PARAM_ADOPT_STACK_DATA]
try:
adopt_data = template_format.simple_parse(adopt_data)
template_format.validate_template_limit(
six.text_type(adopt_data['template']))
return adopt_data['template']
except (ValueError, KeyError) as ex:
err_reason = _('Invalid adopt data: %s') % ex
raise exc.HTTPBadRequest(err_reason)
elif self.PARAM_TEMPLATE in self.data:
template_data = self.data[self.PARAM_TEMPLATE]
if isinstance(template_data, dict):
template_format.validate_template_limit(six.text_type(
template_data))
return template_data
elif self.PARAM_TEMPLATE_URL in self.data:
url = self.data[self.PARAM_TEMPLATE_URL]
LOG.debug('TemplateUrl %s' % url)
try:
template_data = urlfetch.get(url)
except IOError as ex:
err_reason = _('Could not retrieve template: %s') % ex
raise exc.HTTPBadRequest(err_reason)
if template_data is None:
if self.patch:
return None
else:
raise exc.HTTPBadRequest(_("No template specified"))
with self.parse_error_check('Template'):
return template_format.parse(template_data)
def template(self):
"""Get template file contents.
Get template file contents, either inline, from stack adopt data or
from a URL, in JSON or YAML format.
"""
template_data = None
if rpc_api.PARAM_ADOPT_STACK_DATA in self.data:
adopt_data = self.data[rpc_api.PARAM_ADOPT_STACK_DATA]
try:
adopt_data = template_format.simple_parse(adopt_data)
template_format.validate_template_limit(
six.text_type(adopt_data['template']))
return adopt_data['template']
except (ValueError, KeyError) as ex:
err_reason = _('Invalid adopt data: %s') % ex
raise exc.HTTPBadRequest(err_reason)
elif self.PARAM_TEMPLATE in self.data:
template_data = self.data[self.PARAM_TEMPLATE]
if isinstance(template_data, dict):
template_format.validate_template_limit(
six.text_type(template_data))
return template_data
elif self.PARAM_TEMPLATE_URL in self.data:
url = self.data[self.PARAM_TEMPLATE_URL]
LOG.debug('TemplateUrl %s' % url)
try:
template_data = urlfetch.get(url)
except IOError as ex:
err_reason = _('Could not retrieve template: %s') % ex
raise exc.HTTPBadRequest(err_reason)
if template_data is None:
if self.patch:
return None
else:
raise exc.HTTPBadRequest(_("No template specified"))
with self.parse_error_check('Template'):
return template_format.parse(template_data)
def handle_update(self, json_snippet, tmpl_diff, prop_diff):
# Always issue an update to the remote stack and let the individual
# resources in it decide if they need updating.
if self.resource_id:
snippet = json_snippet.get('Properties', {})
self.properties = properties.Properties(self.properties_schema,
snippet, function.resolve,
self.name)
params = self.properties[self.PARAMETERS]
env = environment.get_child_environment(self.stack.env, params)
tmpl = template_format.parse(self.properties[self.TEMPLATE])
fields = {
'stack_id': self.resource_id,
'parameters': params,
'template': tmpl,
'timeout_mins': self.properties[self.TIMEOUT],
'disable_rollback': self.stack.disable_rollback,
'files': self.stack.t.files,
'environment': env.user_env_as_dict(),
}
self.heat().stacks.update(**fields)
def handle_update(self, json_snippet, tmpl_diff, prop_diff):
# Always issue an update to the remote stack and let the individual
# resources in it decide if they need updating.
if self.resource_id:
snippet = json_snippet.get('Properties', {})
self.properties = properties.Properties(self.properties_schema,
snippet,
function.resolve,
self.name)
params = self.properties[self.PARAMETERS]
env = environment.get_child_environment(self.stack.env, params)
tmpl = template_format.parse(self.properties[self.TEMPLATE])
fields = {
'stack_id': self.resource_id,
'parameters': params,
'template': tmpl,
'timeout_mins': self.properties[self.TIMEOUT],
'disable_rollback': self.stack.disable_rollback,
'files': self.stack.t.files,
'environment': env.user_env_as_dict(),
}
self.heat().stacks.update(**fields)
def update_with_template(self, child_template, user_params=None,
timeout_mins=None):
"""Update the nested stack with the new template."""
if self.id is None:
self._store()
nested_stack = self.nested()
if nested_stack is None:
# if the create failed for some reason and the nested
# stack was not created, we need to create an empty stack
# here so that the update will work.
def _check_for_completion():
while not self.check_create_complete():
yield
empty_temp = template_format.parse(
"heat_template_version: '2013-05-23'")
self.create_with_template(empty_temp, {})
checker = scheduler.TaskRunner(_check_for_completion)
checker(timeout=self.stack.timeout_secs())
nested_stack = self.nested()
if timeout_mins is None:
timeout_mins = self.stack.timeout_mins
kwargs = self._stack_kwargs(user_params, child_template)
cookie = {'previous': {
'updated_at': nested_stack.updated_time,
'state': nested_stack.state}}
kwargs.update({
'stack_identity': dict(nested_stack.identifier()),
'args': {rpc_api.PARAM_TIMEOUT: timeout_mins}
})
with self.translate_remote_exceptions:
self.rpc_client().update_stack(self.context, **kwargs)
return cookie
def child_template(self):
if not self._parsed_nested:
self._parsed_nested = template_format.parse(self.template_data())
return self._parsed_nested
