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-rw-r--r--kubernetes/readiness/docker/init/ready.py84
1 files changed, 55 insertions, 29 deletions
diff --git a/kubernetes/readiness/docker/init/ready.py b/kubernetes/readiness/docker/init/ready.py
index c5b55eef18..6d2edef81c 100644
--- a/kubernetes/readiness/docker/init/ready.py
+++ b/kubernetes/readiness/docker/init/ready.py
@@ -1,8 +1,13 @@
#!/usr/bin/python
-from kubernetes import client, config
-import time, argparse, logging, sys, os
+import getopt
+import logging
+import os
+import sys
+import time
-#extract env variables.
+from kubernetes import client
+
+# extract env variables.
namespace = os.environ['NAMESPACE']
cert = os.environ['CERT']
host = os.environ['KUBERNETES_SERVICE_HOST']
@@ -11,12 +16,7 @@ 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
+# setup logging
log = logging.getLogger(__name__)
handler = logging.StreamHandler(sys.stdout)
handler.setFormatter(logging.Formatter('%(asctime)s - %(levelname)s - %(message)s'))
@@ -24,25 +24,29 @@ handler.setLevel(logging.INFO)
log.addHandler(handler)
log.setLevel(logging.INFO)
+configuration = client.Configuration()
+configuration.host = "https://" + host
+configuration.ssl_ca_cert = cert
+configuration.api_key['authorization'] = token
+configuration.api_key_prefix['authorization'] = 'Bearer'
+coreV1Api = client.CoreV1Api(client.ApiClient(configuration))
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
-
+ log.info("Checking if " + container_name + " is ready")
try:
- response = v1.list_namespaced_pod(namespace=namespace, watch=False)
+ response = coreV1Api.list_namespaced_pod(namespace=namespace, watch=False)
for i in response.items:
+ # container_statuses can be None, which is non-iterable.
+ if i.status.container_statuses is None:
+ continue
for s in i.status.container_statuses:
if s.name == container_name:
ready = s.ready
if not ready:
- log.info( container_name + " is not ready.")
+ log.info(container_name + " is not ready.")
else:
- log.info( container_name + " is ready!")
+ log.info(container_name + " is ready!")
else:
continue
return ready
@@ -50,27 +54,49 @@ def is_ready(container_name):
log.error("Exception when calling list_namespaced_pod: %s\n" % e)
-def main(args):
+DEF_TIMEOUT = 10
+DESCRIPTION = "Kubernetes container readiness check utility"
+USAGE = "Usage: ready.py [-t <timeout>] -c <container_name> [-c <container_name> ...]\n" \
+ "where\n" \
+ "<timeout> - wait for container readiness timeout in min, default is " + str(DEF_TIMEOUT) + "\n" \
+ "<container_name> - name of the container to wait for\n"
+
+def main(argv):
# args are a list of container names
- for container_name in args:
- # 5 min, TODO: make configurable
- timeout = time.time() + 60 * 10
+ container_names = []
+ timeout = DEF_TIMEOUT
+ try:
+ opts, args = getopt.getopt(argv, "hc:t:", ["container-name=", "timeout=", "help"])
+ for opt, arg in opts:
+ if opt in ("-h", "--help"):
+ print("%s\n\n%s" % (DESCRIPTION, USAGE))
+ sys.exit()
+ elif opt in ("-c", "--container-name"):
+ container_names.append(arg)
+ elif opt in ("-t", "--timeout"):
+ timeout = float(arg)
+ except (getopt.GetoptError, ValueError) as e:
+ print("Error parsing input parameters: %s\n" % e)
+ print(USAGE)
+ sys.exit(2)
+ if container_names.__len__() == 0:
+ print("Missing required input parameter(s)\n")
+ print(USAGE)
+ sys.exit(2)
+
+ for container_name in container_names:
+ timeout = time.time() + timeout * 60
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")
+ 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)
+ main(sys.argv[1:])
- for arg in arg_dict.itervalues():
- main(arg)