From 37e6ece42078e38421e2b7f1e2fb6c28338a2efc Mon Sep 17 00:00:00 2001
From: Zahi Akiva <zakiva@redhat.com>
Date: Wed, 24 Aug 2016 16:29:30 +0300
Subject: [PATCH] Instantiate Container Template

---
 app/models/container_template.rb              | 64 +++++++++++++++++++
 .../kubernetes/container_manager_mixin.rb     |  4 +-
 .../providers/openshift/container_manager.rb  |  6 ++
 .../openshift/container_manager_mixin.rb      | 16 ++++-
 4 files changed, 87 insertions(+), 3 deletions(-)

diff --git a/app/models/container_template.rb b/app/models/container_template.rb
index ebae1a30862..f2b2ac5f182 100644
--- a/app/models/container_template.rb
+++ b/app/models/container_template.rb
@@ -12,4 +12,68 @@ class ContainerTemplate < ApplicationRecord
   serialize :objects, Array
 
   acts_as_miq_taggable
+
+  MIQ_ENTITY_MAPPING = {
+    "Route"                 => ContainerRoute,
+    "Build"                 => ContainerBuildPod,
+    "BuildConfig"           => ContainerBuild,
+    "Template"              => ContainerTemplate,
+    "ResourceQuota"         => ContainerQuota,
+    "LimitRange"            => ContainerLimit,
+    "ReplicationController" => ContainerReplicator,
+    "PersistentVolumeClaim" => PersistentVolumeClaim,
+    "Pod"                   => ContainerGroup,
+    "Service"               => ContainerService,
+  }.freeze
+
+  def instantiate(params, project = nil)
+    project ||= container_project.name
+    processed_template = process_template(ext_management_system.connect,
+                                          :metadata   => {
+                                            :name      => name,
+                                            :namespace => project
+                                          },
+                                          :objects    => objects,
+                                          :parameters => params)
+    create_objects(processed_template['objects'], project)
+    @created_objects.each { |obj| obj[:kind] = MIQ_ENTITY_MAPPING[obj[:kind]] }
+  end
+
+  def process_template(client, template)
+    client.process_template(template)
+  rescue KubeException => e
+    raise MiqException::MiqProvisionError, "Unexpected Exception while processing template: #{e}"
+  end
+
+  def create_objects(objects, project)
+    @created_objects = []
+    objects.each { |obj| @created_objects << create_object(obj, project).to_h }
+  end
+
+  def create_object(obj, project)
+    obj = obj.symbolize_keys
+    obj[:metadata][:namespace] = project
+    method_name = "create_#{obj[:kind].underscore}"
+    begin
+      ext_management_system.connect_client(obj[:apiVersion], method_name).send(method_name, obj)
+    rescue KubeException => e
+      rollback_objects(@created_objects)
+      raise MiqException::MiqProvisionError, "Unexpected Exception while creating object: #{e}"
+    end
+  end
+
+  def rollback_objects(objects)
+    objects.each { |obj| rollback_object(obj) }
+  end
+
+  def rollback_object(obj)
+    method_name = "delete_#{obj[:kind].underscore}"
+    begin
+      ext_management_system.connect_client(obj[:apiVersion], method_name).send(method_name,
+                                                                               obj[:metadata][:name],
+                                                                               obj[:metadata][:namespace])
+    rescue KubeException => e
+      _log.error("Unexpected Exception while deleting object: #{e}")
+    end
+  end
 end
diff --git a/app/models/manageiq/providers/kubernetes/container_manager_mixin.rb b/app/models/manageiq/providers/kubernetes/container_manager_mixin.rb
index 9ae5a877979..8fc30dff27a 100644
--- a/app/models/manageiq/providers/kubernetes/container_manager_mixin.rb
+++ b/app/models/manageiq/providers/kubernetes/container_manager_mixin.rb
@@ -17,8 +17,8 @@ def kubernetes_connect(hostname, port, options)
       require 'kubeclient'
 
       Kubeclient::Client.new(
-        raw_api_endpoint(hostname, port),
-        kubernetes_version,
+        raw_api_endpoint(hostname, port, options[:path]),
+        options[:version] || kubernetes_version,
         :ssl_options    => { :verify_ssl => verify_ssl_mode },
         :auth_options   => kubernetes_auth_options(options),
         :http_proxy_uri => VMDB::Util.http_proxy_uri
diff --git a/app/models/manageiq/providers/openshift/container_manager.rb b/app/models/manageiq/providers/openshift/container_manager.rb
index 61b22c10a70..3ecaa817729 100644
--- a/app/models/manageiq/providers/openshift/container_manager.rb
+++ b/app/models/manageiq/providers/openshift/container_manager.rb
@@ -23,4 +23,10 @@ def self.event_monitor_class
   def supported_auth_attributes
     %w(userid password auth_key)
   end
+
+  def create_project(project)
+    connect.create_project_request(project)
+  rescue KubeException => e
+    raise MiqException::MiqProvisionError, "Unexpected Exception while creating project: #{e}"
+  end
 end
diff --git a/app/models/manageiq/providers/openshift/container_manager_mixin.rb b/app/models/manageiq/providers/openshift/container_manager_mixin.rb
index 1224f490fac..715f8637d8d 100644
--- a/app/models/manageiq/providers/openshift/container_manager_mixin.rb
+++ b/app/models/manageiq/providers/openshift/container_manager_mixin.rb
@@ -38,11 +38,25 @@ def openshift_connect(hostname, port, options)
 
       Kubeclient::Client.new(
         raw_api_endpoint(hostname, port, '/oapi'),
-        api_version,
+        options[:version] || api_version,
         :ssl_options    => { :verify_ssl => verify_ssl_mode },
         :auth_options   => kubernetes_auth_options(options),
         :http_proxy_uri => VMDB::Util.http_proxy_uri
       )
     end
   end
+
+  def connect_client(api_version, method_name)
+    @clients ||= {}
+    api, version = api_version.split('/', 2)
+    if version
+      @clients[api_version] ||= connect(:service => 'kubernetes', :version => version, :path => '/apis/' + api)
+    else
+      openshift = 'oapi' + api_version
+      kubernetes = 'api' + api_version
+      @clients[openshift] ||= connect(:version => api_version)
+      @clients[kubernetes] ||= connect(:service => 'kubernetes', :version => api_version)
+      @clients[openshift].respond_to?(method_name) ? @clients[openshift] : @clients[kubernetes]
+    end
+  end
 end