def parse_mako(stack_name, template_body, parameters):
""" Parses Mako templates
"""
# The default for strict_undefined is False. Change to True to
# troubleshoot pesky templates
mako_template = mako.template.Template(
template_body,
strict_undefined=False
)
parameters["get_stack_output"] = get_stack_output
parameters["get_stack_resource"] = get_stack_resource
parameters["call_aws"] = call_aws
try:
template = yaml.load(mako_template.render(**parameters))
except Exception:
raise SystemExit(
mako.exceptions.text_error_template().render()
)
# Automatically adds and merges outputs for every resource in the
# template - outputs are automatically exported.
# An existing output in the template will not be overriden by an
# automatic output.
outputs = {
k: {
"Value": {"Ref": k},
"Export": {"Name": "{}-{}".format(stack_name, k)}
} for k in template.get("Resources", {}).keys()
}
outputs.update(template.get("Outputs", {}))
template["Outputs"] = outputs
return template
def parse_jinja(stack_name, template_body, parameters):
""" Parses Jinja templates
"""
jinja_template = jinja2.Template(template_body)
parameters["utils"] = gpwm.utils
# parameters["get_stack_output"] = get_stack_output
# parameters["get_stack_resource"] = get_stack_resource
# parameters["call_aws"] = call_aws
try:
template = yaml.load(jinja_template.render(**parameters))
# Ignoring yaml tags unknown to this script, because one might want to use
# the providers tags like !Ref, !Sub, etc in their templates
except yaml.constructor.ConstructorError as exc:
if "could not determine a constructor for the tag" not in exc.problem:
raise exc
# Automatically adds and merges outputs for every resource in the
# template - outputs are automatically exported.
# An existing output in the template will not be overriden by an
# automatic output.
outputs = {
k: {
"Value": {"Ref": k},
"Export": {"Name": "{}-{}".format(stack_name, k)}}
for k in template.get("Resources", {}).keys()
}
outputs.update(template.get("Outputs", {}))
template["Outputs"] = outputs
return template
def parse_mako(stack_name, template_body, parameters):
""" Parses Mako templates
"""
# The default for strict_undefined is False. Change to True to
# troubleshoot pesky templates
mako_template = mako.template.Template(
template_body,
strict_undefined=False
)
parameters["utils"] = gpwm.utils
# parameters["get_stack_output"] = get_stack_output
# parameters["get_stack_resource"] = get_stack_resource
# parameters["call_aws"] = call_aws
try:
rendered_mako_template = mako_template.render(**parameters)
# Weird Mako exception handling:
# http://docs.makotemplates.org/en/latest/usage.html#handling-exceptions
except Exception:
raise SystemExit(
mako.exceptions.text_error_template().render()
)
# Ignoring yaml tags unknown to this script, because one might want to use
# the providers tags like !Ref, !Sub, etc in their templates
try:
template = yaml.load(rendered_mako_template)
except yaml.constructor.ConstructorError as exc:
if "could not determine a constructor for the tag" not in exc.problem:
raise exc
# Automatically adds and merges outputs for every resource in the
# template - outputs are automatically exported.
# An existing output in the template will not be overriden by an
# automatic output.
outputs = {
k: {
"Value": {"Ref": k},
"Export": {"Name": "{}-{}".format(stack_name, k)}
} for k in template.get("Resources", {}).keys()
}
outputs.update(template.get("Outputs", {}))
if outputs:
template["Outputs"] = outputs
return template
def _render_template_image(self, template):
if self._prerender:
self._requested_images.append(template)
return None
else:
pool_name = template.get("pool", "default")
image = self._chosen_images[pool_name].images.pop(0)
template_vars = {
"snaptime": image.snaptime,
"agediff": DateTools.age_diff,
"datetime": datetime,
}
caption_template = mako.template.Template(template.get(
"caption", ""),
strict_undefined=True)
caption = caption_template.render(**template_vars)
return {
"filename": image.filename,
"caption": caption,
}
def parse_jinja(stack_name, template_body, parameters):
""" Parses Jinja templates
"""
jinja_template = jinja2.Template(template_body)
parameters["get_stack_output"] = get_stack_output
parameters["get_stack_resource"] = get_stack_resource
parameters["call_aws"] = call_aws
template = yaml.load(jinja_template.render(**parameters))
# Automatically adds and merges outputs for every resource in the
# template - outputs are automatically exported.
# An existing output in the template will not be overriden by an
# automatic output.
outputs = {
k: {
"Value": {"Ref": k},
"Export": {"Name": "{}-{}".format(stack_name, k)}}
for k in template.get("Resources", {}).keys()
}
outputs.update(template.get("Outputs", {}))
template["Outputs"] = outputs
return template