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import pip
from cloudify import ctx
from cloudify.exceptions import NonRecoverableError
SERVICES_FILE_PARTS_SEPARATOR = '---'
def _import_or_install():
try:
import yaml
except ImportError:
pip.main(["install", "pyaml"])
try:
import cloudify_kubernetes.tasks as kubernetes_plugin
except ImportError:
pip.main([
"install",
"https://github.com/cloudify-incubator/cloudify-kubernetes-plugin/archive/1.2.1rc1.zip"
])
try:
import jinja2
except ImportError:
pip.main(["install", "jinja2"])
import yaml
import jinja2
import cloudify_kubernetes.tasks as kubernetes_plugin
return yaml, kubernetes_plugin, jinja2
def _init_jinja(jinja2):
return jinja2.Environment(
loader=jinja2.BaseLoader()
)
def _render_template(jinja_env, template_content, values):
template_content = template_content.replace('.Values', 'Values')
template = jinja_env.from_string(template_content)
rendered_template = template.render(Values=values)
return rendered_template
def _retrieve_resources_paths():
return ctx.node.properties.get('resources', [])
def _retrieve_services_paths():
return ctx.node.properties.get('services', None)
def _retrieve_values(yaml):
values_file_path = ctx.node.properties.get('values', None)
if values_file_path:
return yaml.load(ctx.get_resource(values_file_path))
ctx.logger.warn('Values file not found')
def _set_deployment_result(key):
result = ctx.instance.runtime_properties.pop(key)
ctx.instance.runtime_properties['kubernetes'] = result
def _do_delete_resources(kubernetes_plugin, yaml, jinja_env, values):
for path in _retrieve_resources_paths():
ctx.logger.info('Deleting resource defined in: {0}'.format(path))
template_content = ctx.get_resource(path)
yaml_content = _render_template(
jinja_env,
template_content,
values
)
content = yaml.load(yaml_content)
_set_deployment_result(
'resource_{0}'.format(content['metadata']['name'])
)
kubernetes_plugin.resource_delete(definition=content)
ctx.logger.info('Resources deleted successfully')
def _do_delete_services(kubernetes_plugin, yaml, jinja_env, values):
ctx.logger.info('Deleting services')
services_file_path = _retrieve_services_paths()
if not services_file_path:
ctx.logger.warn(
'Service file is not defined. Skipping services provisioning !'
)
return
template_content = ctx.get_resource(services_file_path)
yaml_content = _render_template(
jinja_env,
template_content,
values
)
yaml_content_parts = \
yaml_content.split(SERVICES_FILE_PARTS_SEPARATOR)
for yaml_content_part in yaml_content_parts:
content = yaml.load(yaml_content_part)
_set_deployment_result(
'service_{0}'.format(content['metadata']['name'])
)
kubernetes_plugin.resource_delete(definition=content)
ctx.logger.info('Services deleted successfully')
if __name__ == '__main__':
yaml, kubernetes_plugin, jinja2 = _import_or_install()
jinja_env = _init_jinja(jinja2)
values = _retrieve_values(yaml)
_do_delete_services(kubernetes_plugin, yaml, jinja_env, values)
_do_delete_resources(kubernetes_plugin, yaml, jinja_env, values)
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