Drop PetSet support

Change-Id: I2547c925671ce411acf68a1e8a2020064aaf8608

doc/source/dsl.rst

@@ -85,8 +85,7 @@ service
 +---------------+-----------------------------------------------+----------+------------------+------------+
 | kind          | Kind of k8s object to use for containers      | false    | one of:          | Deployment |
 |               | deployment                                    |          | ["Deployment",   |            |
-|               |                                               |          | "Daemonset",     |            |
-|               |                                               |          | "PetSet"]        |            |
+|               |                                               |          | "DaemonSet"]     |            |
 +---------------+-----------------------------------------------+----------+------------------+------------+
 | containers    | List of containers under multi-container pod  | true     | container_ array |            |
 +---------------+-----------------------------------------------+----------+------------------+------------+

fuel_ccp/common/utils.py

@@ -1,4 +1,3 @@
-import itertools
 import logging
 import os
 import pkg_resources
@@ -94,8 +93,7 @@ def get_deploy_components_info(rendering_context=None):
 def get_deployed_components():
     """Returns set of deployed components."""
     deployed_deployments = kubernetes.list_cluster_deployments()
-    deployed_petsets = kubernetes.list_cluster_petsets()
-    deployed_components = set(kubernetes.get_object_names(
-        itertools.chain(deployed_deployments, deployed_petsets))
+    deployed_components = set(
+        kubernetes.get_object_names(deployed_deployments)
     )
     return deployed_components

fuel_ccp/deploy.py

@@ -109,18 +109,11 @@ def parse_role(component, topology, configmaps):
             raise RuntimeError("Replicas couldn't be specified for services "
                                "implemented using Kubernetes DaemonSet")
         replicas = len(set(topology[service_name]))
-        obj = templates.serialize_deployment(service_name, cont_spec,
-                                             affinity, replicas,
-                                             component_name)
-    elif service.get("kind") == "PetSet":
-        replicas = replicas or 1
-        obj = templates.serialize_petset(service_name, cont_spec,
-                                         affinity, replicas, component_name)
     else:
         replicas = replicas or 1
-        obj = templates.serialize_deployment(service_name, cont_spec,
-                                             affinity, replicas,
-                                             component_name)
+
+    obj = templates.serialize_deployment(service_name, cont_spec,
+                                         affinity, replicas, component_name)
     kubernetes.process_object(obj)
 
     _process_ports(service)
@@ -186,8 +179,7 @@ def _process_ports(service):
             if ingress_host:
                 ingress_rules.append(templates.serialize_ingress_rule(
                     service["name"], ingress_host, source_port))
-    service_template = templates.serialize_service(
-        service["name"], ports, service.get("kind") == "PetSet")
+    service_template = templates.serialize_service(service["name"], ports)
     kubernetes.process_object(service_template)
 
     if ingress_rules:

fuel_ccp/kubernetes.py

@@ -151,13 +151,6 @@ def list_cluster_services():
         selector="ccp=true")
 
 
-def list_cluster_petsets():
-    client = get_client()
-    return pykube.PetSet.objects(client).filter(
-        namespace=CONF.kubernetes.namespace,
-        selector="ccp=true")
-
-
 def get_object_names(items):
     names = []
     for item in items:

fuel_ccp/templates.py

@@ -318,36 +318,6 @@ def serialize_deployment(name, spec, affinity, replicas, component_name):
     }
 
 
-def serialize_petset(name, spec, affinity, replicas, component_name):
-    annotations = {
-        "pod.alpha.kubernetes.io/initialized": "true"
-    }
-    annotations.update(affinity)
-
-    return {
-        "apiVersion": "apps/v1alpha1",
-        "kind": "PetSet",
-        "metadata": {
-            "name": name
-        },
-        "spec": {
-            "serviceName": name,
-            "replicas": replicas,
-            "template": {
-                "metadata": {
-                    "annotations": annotations,
-                    "labels": {
-                        "ccp": "true",
-                        "app": name,
-                        "ccp-component": component_name
-                    }
-                },
-                "spec": spec
-            }
-        }
-    }
-
-
 def serialize_affinity(service, topology):
     policy = {
         "nodeAffinity": {

fuel_ccp/validation/service.py

@@ -183,7 +183,7 @@ SERVICE_SCHEMA = {
                     }
                 },
                 "kind": {
-                    "enum": ["Deployment", "DaemonSet", "PetSet"]
+                    "enum": ["Deployment", "DaemonSet"]
                 },
                 "hostNetwork": {
                     "type": "boolean"