CORD-2965 configmap support

Change-Id: I4c6bfe970dc7b466ac3d370e0e056bf0e67dfa1c
diff --git a/xos/synchronizer/steps/sync_secret.py b/xos/synchronizer/steps/sync_secret.py
new file mode 100644
index 0000000..903be4f
--- /dev/null
+++ b/xos/synchronizer/steps/sync_secret.py
@@ -0,0 +1,82 @@
+
+# Copyright 2017-present Open Networking Foundation
+#
+# 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.
+
+"""
+    sync_secret.py
+
+    Synchronize Secrets.
+"""
+
+import json
+from synchronizers.new_base.syncstep import SyncStep
+from synchronizers.new_base.modelaccessor import KubernetesSecret
+
+from xosconfig import Config
+from multistructlog import create_logger
+
+from kubernetes.client.rest import ApiException
+from kubernetes import client as kubernetes_client, config as kubernetes_config
+
+log = create_logger(Config().get('logging'))
+
+class SyncKubernetesSecret(SyncStep):
+
+    """
+        SyncKubernetesSecret
+
+        Implements sync step for syncing Secrets.
+    """
+
+    provides = [KubernetesSecret]
+    observes = KubernetesSecret
+    requested_interval = 0
+
+    def __init__(self, *args, **kwargs):
+        super(SyncKubernetesSecret, self).__init__(*args, **kwargs)
+        kubernetes_config.load_incluster_config()
+        self.v1 = kubernetes_client.CoreV1Api()
+
+    def get_secret(self, o):
+        """ Given an XOS KubernetesSecret object, read the corresponding Secret from Kubernetes.
+            return None if no Secret exists.
+        """
+        try:
+            secret = self.v1.read_namespaced_secret(o.name, o.trust_domain.name)
+        except ApiException, e:
+            if e.status == 404:
+                return None
+            raise
+        return secret
+
+    def sync_record(self, o):
+            secret = self.get_secret(o)
+            if not secret:
+                secret = kubernetes_client.V1Secret()
+                secret.data = json.loads(o.data)
+                secret.metadata = kubernetes_client.V1ObjectMeta(name=o.name)
+
+                secret = self.v1.create_namespaced_secret(o.trust_domain.name, secret)
+            else:
+                secret.data = json.loads(o.data)
+                self.v1.patch_namespaced_secret(o.name, o.trust_domain.name, secret)
+
+            if (not o.backend_handle):
+                o.backend_handle = secret.metadata.self_link
+                o.save(update_fields=["backend_handle"])
+
+    def delete_record(self, port):
+        # TODO(smbaker): Implement delete step
+        pass
+