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|
########
# Copyright (c) 2017 GigaSpaces Technologies Ltd. All rights reserved
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# * See the License for the specific language governing permissions and
# * limitations under the License.
import subprocess
import cloudify_kubernetes.tasks as kubernetes_plugin
import yaml
from cloudify import ctx
from cloudify.exceptions import NonRecoverableError
import constants
import deployment_result
import time
import ast
import json
import base64
SERVICES_FILE_PARTS_SEPARATOR = '---'
def create_resoruces():
ctx.logger.info('Creating resources')
apps_path = _retrieve_root_path()
if not apps_path:
ctx.logger.warn(
'Apps dir is not defined. Skipping!'
)
return
helm_app = ctx.node.properties.get('path', None)
yaml_file = prepare_content(helm_app)
yaml_content_parts = yaml_file.split(SERVICES_FILE_PARTS_SEPARATOR)
for yaml_content_part in yaml_content_parts:
if yaml_content_part:
yaml_content = _apply_readiness_workaround(yaml_content_part)
if yaml_content:
create_resource(yaml_content)
ctx.logger.info('Resource created successfully')
def delete_resoruces():
ctx.logger.info('Deleting resources')
apps_path = _retrieve_root_path()
if not apps_path:
ctx.logger.warn(
'Apps dir is not defined. Skipping!'
)
return
helm_app = ctx.node.properties.get('path', None)
yaml_file = prepare_content(helm_app)
yaml_content_parts = yaml_file.split(SERVICES_FILE_PARTS_SEPARATOR)
for yaml_content_part in yaml_content_parts:
if yaml_content_part:
yaml_content = _apply_readiness_workaround(yaml_content_part)
if yaml_content:
delete_resource(yaml_content)
ctx.logger.info('Resources deleted successfully')
def prepare_content(resource):
helm_path = _retrieve_helm_cli_path()
yaml_file = render_chart(resource, _retrieve_root_path(), helm_path)
return yaml_file
def create_resource(yaml_content_dict):
ctx.logger.debug("Loading yaml: {}".format(yaml_content_dict))
if yaml_content_dict.get('kind', '') == 'PersistentVolumeClaim':
ctx.logger.debug("PersistentVolumeClaim custom handling")
kubernetes_plugin.custom_resource_create(definition=yaml_content_dict, api_mapping=_get_persistent_volume_mapping_claim_api())
else:
kubernetes_plugin.resource_create(definition=yaml_content_dict)
deployment_result.save_deployment_result('resource_{0}'.format(yaml_content_dict['metadata']['name']))
def delete_resource(yaml_content_dict):
ctx.logger.debug("Loading yaml: {}".format(yaml_content_dict))
deployment_result.save_deployment_result('resource_{0}'.format(yaml_content_dict['metadata']['name']))
if yaml_content_dict.get('kind', '') == 'PersistentVolumeClaim':
ctx.logger.debug("PersistentVolumeClaim custom handling")
kubernetes_plugin.custom_resource_delete(definition=yaml_content_dict, api_mapping=_get_persistent_volume_mapping_claim_api())
else:
kubernetes_plugin.resource_delete(definition=yaml_content_dict)
def render_chart(app, app_root_path, helm_cli_path):
app_chart_path = "{}/{}/".format(app_root_path, app)
ctx.logger.debug('App chart path = {}'.format(app_chart_path))
return _exec_helm_template(helm_cli_path, app_chart_path)
def _exec_helm_template(helm_path, chart):
cmd = '{0} template {1}'.format(helm_path, chart)
ctx.logger.debug('Executing helm template cmd: {}'.format(cmd))
rendered = subprocess.Popen(cmd.split(" "), stdout=subprocess.PIPE).stdout.read().decode()
return rendered
def _get_persistent_volume_mapping_claim_api():
api_mapping = {
'create' : {
'api': 'CoreV1Api',
'method': 'create_namespaced_persistent_volume_claim',
'payload': 'V1PersistentVolumeClaim'
},
'read' : {
'api': 'CoreV1Api',
'method': 'read_namespaced_persistent_volume_claim',
},
'delete': {
'api': 'CoreV1Api',
'method': 'delete_namespaced_persistent_volume_claim',
'payload': 'V1DeleteOptions'
}
}
return api_mapping
def _apply_readiness_workaround(yaml_file):
b64_env = _get_k8s_b64_env()
input_dict = yaml.load(yaml_file)
try:
init_containers = input_dict['spec']['template']['metadata']['annotations'][
'pod.beta.kubernetes.io/init-containers']
init_cont_list = eval(init_containers)
new_init_cont_list = list()
new_cont = None
for init_cont in init_cont_list:
if "oomk8s/readiness-check" in init_cont['image']:
init_cont['image'] = "clfy/oomk8s-cfy-readiness-check:1.0.1"
#init_cont['imagePullPolicy'] = "IfNotPresent"
init_cont['env'].append(b64_env)
new_cont = init_cont
new_init_cont_list.append(json.dumps(init_cont))
new_payload = ",".join(new_init_cont_list)
if new_cont:
input_dict['spec']['template']['metadata']['annotations'].pop('pod.beta.kubernetes.io/init-containers')
input_dict['spec']['template']['metadata']['annotations']['pod.beta.kubernetes.io/init-containers'] = '[{}]'.format(new_payload)
except KeyError as ke:
ctx.logger.debug('Readiness section is not found.')
return input_dict
def _get_k8s_b64():
target_relationship = _retrieve_managed_by_master()
k8s_config = target_relationship.node.properties.get('configuration').get('file_content')
if not k8s_config:
raise Exception("Cannot find kubernetes config")
k8s_config_plain = yaml.dump(k8s_config, allow_unicode=True)
k8s_config_b64 = base64.b64encode(k8s_config_plain)
return k8s_config_b64
def _get_k8s_b64_env():
env = dict()
env['name'] = 'K8S_CONFIG_B64'
env['value'] = _get_k8s_b64()
return env
def _retrieve_root_path():
target_relationship = _retrieve_depends_on()
apps_root_path = target_relationship.instance.runtime_properties.get(constants.RT_APPS_ROOT_PATH, None)
ctx.logger.debug("Retrived apps root path = {}".format(apps_root_path))
return apps_root_path
def _retrieve_helm_cli_path():
target_relationship = _retrieve_depends_on()
helm_cli_path = target_relationship.instance.runtime_properties.get(constants.RT_HELM_CLI_PATH, None)
ctx.logger.debug("Retrived helm clis path = {}".format(helm_cli_path))
return helm_cli_path
def _retrieve_depends_on():
result = None
for relationship in ctx.instance.relationships:
if relationship.type == 'cloudify.relationships.depends_on':
return relationship.target
def _retrieve_managed_by_master():
result = None
for relationship in ctx.instance.relationships:
if relationship.type == 'cloudify.kubernetes.relationships.managed_by_master':
return relationship.target
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