VID Resiliency & Scalability

Change-Id: Ifc593e2e33c3430c74156b4b153263c11127bfa9
Issue-ID: VID-160
Signed-off-by: Michael Lando <ml636r@att.com>

1 files changed, 89 insertions, 0 deletions

diff --git a/kubernetes/vid/templates/cluster-ready-configmap.yaml b/kubernetes/vid/templates/cluster-ready-configmap.yaml
new file mode 100644
index 0000000000..296db335a7
--- /dev/null
+++ b/kubernetes/vid/templates/cluster-ready-configmap.yaml
@@ -0,0 +1,89 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ include "common.fullname" . }}-cluster-ready-configmap
+  namespace: {{ include "common.namespace" . }}
+data:
+ vid_ready.py : |-
+   #!/usr/bin/python
+   from kubernetes import client, config
+   import time, argparse, logging, sys, os
+
+   #extract env variables.
+   namespace = os.environ['NAMESPACE']
+   cert = os.environ['CERT']
+   host = os.environ['KUBERNETES_SERVICE_HOST']
+   token_path = os.environ['TOKEN']
+
+   with open(token_path, 'r') as token_file:
+       token = token_file.read().replace('\n', '')
+
+   client.configuration.host = "https://" + host
+   client.configuration.ssl_ca_cert = cert
+   client.configuration.api_key['authorization'] = token
+   client.configuration.api_key_prefix['authorization'] = 'Bearer'
+
+   #setup logging
+   log = logging.getLogger(__name__)
+   handler = logging.StreamHandler(sys.stdout)
+   handler.setFormatter(logging.Formatter('%(asctime)s - %(levelname)s - %(message)s'))
+   handler.setLevel(logging.INFO)
+   log.addHandler(handler)
+   log.setLevel(logging.INFO)
+
+
+   def is_ready(container_name):
+       log.info( "Checking if " + container_name + "  is ready")
+       # config.load_kube_config() # for local testing
+       # namespace='onap-sdc' # for local testing
+       v1 = client.CoreV1Api()
+
+       ready = False
+
+       try:
+           response = v1.list_namespaced_pod(namespace=namespace, watch=False)
+
+           for i in response.items:
+               #log.info(i.metadata.name)
+               for s in i.status.container_statuses:
+                   #log.info(s.name)
+                   if i.metadata.name == container_name:
+                       ready = s.ready
+                       if not ready:
+                           log.info( container_name + " is not ready.")
+                       else:
+                           log.info( container_name + " is ready!")
+                   else:
+                       continue
+           return ready
+       except Exception as e:
+           log.error("Exception when calling list_namespaced_pod: %s\n" % e)
+
+
+   def main(args):
+       # args are a list of container names
+       for container_name in args:
+           # 5 min, TODO: make configurable
+           timeout = time.time() + 60 * 10
+           while True:
+               ready = is_ready(container_name)
+               if ready is True:
+                   break
+               elif time.time() > timeout:
+                   log.warning( "timed out waiting for '" + container_name + "' to be ready")
+                   exit(1)
+               else:
+                   time.sleep(5)
+
+
+   if __name__ == "__main__":
+       parser = argparse.ArgumentParser(description='Process some names.')
+       parser.add_argument('--container-name', action='append', required=True, help='A container name')
+       args = parser.parse_args()
+       arg_dict = vars(args)
+
+       for arg in arg_dict.itervalues():
+           main(arg)
+
+
+