--- /dev/null
+################################################################################
+# Copyright (c) 2020 AT&T Intellectual Property. #
+# #
+# 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 logging
+from flask import make_response
+from flask_restplus import Resource
+from xapp_onboarder.api.api_reference import api
+from xapp_onboarder.api.charts import get_charts_list, download_chart_package, download_values_yaml
+from xapp_onboarder.api.models.response_models import error_message_model
+
+log = logging.getLogger(__name__)
+ns = api.namespace('charts', description='Managing helm charts')
+
+
+@ns.route('')
+class ChartsList(Resource):
+
+ @api.response(200, 'Get helm chart list OK')
+ @api.response(500, 'Get helm chart list failed', error_message_model)
+ def get(self):
+ """
+ Returns the list of xApp helm charts that have been onboarded.
+ """
+
+ return get_charts_list()
+
+
+@ns.route('/xapp/<string:xapp_chart_name>')
+class VersionList(Resource):
+
+ @api.response(200, 'Get helm chart OK')
+ @api.response(500, 'Get helm chart failed', error_message_model)
+ def get(self, xapp_chart_name):
+ """
+ Returns the helm chart for the specified xApp.
+ """
+ return get_charts_list(xapp_chart_name=xapp_chart_name)
+
+
+@ns.route('/xapp/<string:xapp_chart_name>/ver/<string:version>')
+class ChartsFetcher(Resource):
+
+ @api.response(200, 'Get helm chart package OK')
+ @api.response(500, 'Get helm chart package failed', error_message_model)
+ @api.produces(['application/gzip'])
+ def get(self, xapp_chart_name, version):
+ """
+ Returns the helm chart for the specified xApp and version.
+ """
+
+ content, status = download_chart_package(xapp_chart_name=xapp_chart_name, version=version)
+
+ if status != 200:
+ return content, status
+
+ response = make_response(content)
+ response.headers.set("Content-Type", "application/gzip")
+ response.headers.set("Content-Disposition",
+ "attachment; filename=\"" + xapp_chart_name + "-" + version + ".tgz\"")
+ return response
+
+
+@ns.route('/xapp/<string:xapp_chart_name>/ver/<string:version>/values.yaml')
+class ValuesYamlFetcher(Resource):
+
+ @api.response(200, 'Get helm chart values.yaml OK')
+ @api.response(500, 'Get helm chart values.yaml failed', error_message_model)
+ @api.produces(['text/x-yaml'])
+ def get(self, xapp_chart_name, version):
+ """
+ Returns the helm values.yaml file of the specified xApp and version.
+ """
+
+ content, status = download_values_yaml(xapp_chart_name=xapp_chart_name, version=version)
+
+ if status != 200:
+ return content, status
+
+ response = make_response(content)
+ response.headers.set("Content-Type", "text/x-yaml")
+ response.headers.set("Content-Disposition", "attachment; filename=\"values.yaml\"")
+
+ return response