3 files changed, 129 insertions, 0 deletions
diff --git a/kubernetes/readiness/dep-health-init.yaml b/kubernetes/readiness/dep-health-init.yaml
new file mode 100644
index 0000000000..d77127b201
--- /dev/null
+++ b/kubernetes/readiness/dep-health-init.yaml
@@ -0,0 +1,33 @@
+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  labels:
+    app: healthy
+    version: 1.0.0
+  name: healthy
+spec:
+  selector:
+    matchLabels:
+      app: healthy
+      version: 1.0.0
+  template:
+    metadata:
+      labels:
+        app: healthy
+        version: 1.0.0
+      name: healthy
+    spec:
+      containers:
+      - args:
+        - --container-name
+        - hbase
+        command:
+        - /root/ready.py
+        image: oomk8s/readiness-check:1.0.0
+        imagePullPolicy: Always
+        name: healthy
+        env:
+        - name: NAMESPACE
+          valueFrom:
+            fieldRef:
+              fieldPath: metadata.namespace
diff --git a/kubernetes/readiness/docker/init/Dockerfile b/kubernetes/readiness/docker/init/Dockerfile
new file mode 100644
index 0000000000..b0fd68b44e
--- /dev/null
+++ b/kubernetes/readiness/docker/init/Dockerfile
@@ -0,0 +1,20 @@
+from ubuntu:16.04
+
+ENV no_proxy "localhost,127.0.0.1,.cluster.local,$KUBERNETES_SERVICE_HOST"
+# Setup Corporate proxy
+ENV https_proxy http://genproxy.amdocs.com:8080/
+ENV http_proxy http://genproxy.amdocs.com:8080/
+
+# Additional packages
+RUN apt-get update
+RUN apt-get install -y apt-utils git wget curl dnsutils python python-pip jq net-tools coreutils vim
+
+RUN pip install requests pyyaml kubernetes
+
+
+ENV CERT="/var/run/secrets/kubernetes.io/serviceaccount/ca.crt"
+ENV TOKEN="/var/run/secrets/kubernetes.io/serviceaccount/token"
+
+COPY ready.py /root/ready.py
+RUN chmod a+x /root/ready.py
+ENTRYPOINT /root/ready.py
diff --git a/kubernetes/readiness/docker/init/ready.py b/kubernetes/readiness/docker/init/ready.py
new file mode 100644
index 0000000000..c5b55eef18
--- /dev/null
+++ b/kubernetes/readiness/docker/init/ready.py
@@ -0,0 +1,76 @@
+#!/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:
+            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.")
+                    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)