Added support of Hue 3.8.1 to MapR plugin

Implements: blueprint mapr-hue-381
Change-Id: Ie8db13b91ee2fa37b3eeffa30ba613d1b6ce2ef7

sahara/plugins/mapr/services/hue/hue.py

@@ -46,6 +46,13 @@ HUE = np.NodeProcess(
     open_ports=[8002, 8888]
 )
 
+HUE_LIVY = np.NodeProcess(
+    name="hue-livy",
+    ui_name="Hue Livy",
+    package="mapr-hue-livy",
+    open_ports=[8998]
+)
+
 
 @six.add_metaclass(s.Single)
 class Hue(s.Service):
@@ -214,3 +221,13 @@ class HueV370(Hue):
     def __init__(self):
         super(HueV370, self).__init__()
         self._version = '3.7.0'
+
+
+@six.add_metaclass(s.Single)
+class HueV381(Hue):
+    def __init__(self):
+        super(HueV381, self).__init__()
+        self._version = "3.8.1"
+        self._dependencies = [("mapr-hue-base", self.version)]
+        self._node_processes = [HUE, HUE_LIVY]
+        self._validation_rules.append(vu.at_most(1, HUE_LIVY))

sahara/plugins/mapr/util/validation_utils.py

@@ -38,6 +38,22 @@ class LessThanCountException(e.InvalidComponentCountException):
         self.message = LessThanCountException.MESSAGE % args
 
 
+class MoreThanCountException(e.InvalidComponentCountException):
+    MESSAGE = _("Hadoop cluster should contain at most"
+                " %(expected_count)d %(component)s component(s)."
+                " Actual %(component)s count is %(actual_count)d")
+
+    def __init__(self, component, expected_count, count):
+        super(MoreThanCountException, self).__init__(
+            component, expected_count, count)
+        args = {
+            "expected_count": expected_count,
+            "component": component,
+            "actual_count": count,
+        }
+        self.message = MoreThanCountException.MESSAGE % args
+
+
 class EvenCountException(ex.SaharaException):
     MESSAGE = _("Hadoop cluster should contain odd number of %(component)s"
                 " but %(actual_count)s found.")
@@ -99,6 +115,16 @@ def at_least(count, component):
     return ft.partial(validate, component=component, count=count)
 
 
+def at_most(count, component):
+    def validate(cluster_context, component, count):
+        actual_count = cluster_context.get_instances_count(component)
+        if actual_count > count:
+            raise MoreThanCountException(
+                component.ui_name, count, actual_count)
+
+    return ft.partial(validate, component=component, count=count)
+
+
 def exactly(count, component):
     def validate(cluster_context, component, count):
         actual_count = cluster_context.get_instances_count(component)

sahara/plugins/mapr/versions/v5_0_0_mrv1/version_handler.py

@@ -55,6 +55,7 @@ class VersionHandler(bvh.BaseVersionHandler):
             mahout.MahoutV010(),
             oozie.OozieV410(),
             hue.HueV370(),
+            hue.HueV381(),
             hbase.HBaseV0989(),
             hbase.HBaseV09812(),
             drill.DrillV11(),

sahara/plugins/mapr/versions/v5_0_0_mrv2/version_handler.py

@@ -55,6 +55,7 @@ class VersionHandler(bvh.BaseVersionHandler):
             mahout.MahoutV010(),
             oozie.OozieV410(),
             hue.HueV370(),
+            hue.HueV381(),
             hbase.HBaseV0989(),
             hbase.HBaseV09812(),
             drill.DrillV11(),