Add DCAE Kubernetes plugin

Change-Id: Ic329f77bb09dcccfd49a34a8f84d387e8da929c6
Issue-ID: DCAEGEN2-410
Signed-off-by: Jack Lucas <jflucas@research.att.com>

1 files changed, 64 insertions, 0 deletions

diff --git a/k8s/msb/msb.py b/k8s/msb/msb.py
new file mode 100644
index 0000000..5883f29
--- /dev/null
+++ b/k8s/msb/msb.py
@@ -0,0 +1,64 @@
+# ============LICENSE_START=======================================================
+# org.onap.dcae
+# ================================================================================
+# Copyright (c) 2018 AT&T Intellectual Property. 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.
+# ============LICENSE_END=========================================================
+#
+# ECOMP is a trademark and service mark of AT&T Intellectual Property.
+#
+
+import uuid
+import json
+
+MSB_ANNOTATION_KEY = 'msb.onap.org/service-info'
+
+def _sanitize_service_info(service_info):
+    '''
+    Sanitize a dict containing the MSB annotation parameters for registering
+    a service with MSB.  (Not bullet proof, but useful.)
+    MSB registration happens asynchronously from the installation flow:  an MSB process
+    watches the k8s event stream for new Service creations and looks for the MSB annotation.
+    A bad annotation will fail silently.  This sanitization process should make sure that something
+    gets put into    the MSB's list of services, so that the problem can be seen.
+
+    service_info is a dict containing the MSB annotation parameters.
+    -- serviceName: the name under which the service is to be registered (default: random--pretty useless!)
+    -- port: the container port on which the service can be contacted (default: "80"--nearly as useless)
+    -- version: the API version (default: "v1")
+    -- url: the path to the application's API endpoint (default: "/")
+    -- protocol: see the MSB documentation--the default is usually OK (default: "REST")
+    -- enable_ssl: a flag indicating if the service uses SSL (True) or not (False) (default: True)
+    -- visualRange: "1" means the service is exposed only in ONAP, "0" means externally (default: "1")
+       (Note this is a string value)
+    '''
+    return {
+        'serviceName': service_info.get('serviceName', str(uuid.uuid4())),
+        'port': str(service_info.get('port', '80')),
+        'version': service_info.get('version','v1'),
+        'url': service_info.get('url','/'),
+        'protocol': service_info.get('protocol','REST'),
+        'enable_ssl': bool(service_info.get('enable_ssl', False)),
+        'visualRange': str(service_info.get('visualRange', '1'))
+    }
+
+def create_msb_annotation(msb_service_list):
+    '''
+    Creates an annotation that can be added to a k8s Service to trigger
+    registration with MSB.
+    msb_list is a list of dicts each containing MSB registration information for a
+    service.  (One k8s Service can have multiple ports, each one of which can be 
+    registered as an MSB service.)
+    '''
+    return {MSB_ANNOTATION_KEY : json.dumps([_sanitize_service_info(service_info) for service_info in msb_service_list])}