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From nc...@apache.org
Subject [21/50] ambari git commit: AMBARI-20322 HDP 3.0 TP - create Service Advisor for Slider (dsen)
Date Tue, 14 Mar 2017 18:42:05 GMT
AMBARI-20322 HDP 3.0 TP - create Service Advisor for Slider (dsen)


Project: http://git-wip-us.apache.org/repos/asf/ambari/repo
Commit: http://git-wip-us.apache.org/repos/asf/ambari/commit/3d4a8364
Tree: http://git-wip-us.apache.org/repos/asf/ambari/tree/3d4a8364
Diff: http://git-wip-us.apache.org/repos/asf/ambari/diff/3d4a8364

Branch: refs/heads/branch-feature-AMBARI-12556
Commit: 3d4a836443f156180362ca3b3b1f73f2142d6f69
Parents: c4fce53
Author: Dmytro Sen <dsen@apache.org>
Authored: Mon Mar 13 13:24:09 2017 +0200
Committer: Dmytro Sen <dsen@apache.org>
Committed: Mon Mar 13 13:24:09 2017 +0200

----------------------------------------------------------------------
 .../SLIDER/0.91.0.3.0/service_advisor.py        | 133 +++++++++++++++++++
 1 file changed, 133 insertions(+)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/ambari/blob/3d4a8364/ambari-server/src/main/resources/common-services/SLIDER/0.91.0.3.0/service_advisor.py
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/resources/common-services/SLIDER/0.91.0.3.0/service_advisor.py
b/ambari-server/src/main/resources/common-services/SLIDER/0.91.0.3.0/service_advisor.py
new file mode 100644
index 0000000..6122f14
--- /dev/null
+++ b/ambari-server/src/main/resources/common-services/SLIDER/0.91.0.3.0/service_advisor.py
@@ -0,0 +1,133 @@
+#!/usr/bin/env ambari-python-wrap
+"""
+Licensed to the Apache Software Foundation (ASF) under one
+or more contributor license agreements.  See the NOTICE file
+distributed with this work for additional information
+regarding copyright ownership.  The ASF licenses this file
+to you 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.
+"""
+
+# Python imports
+import imp
+import os
+import traceback
+
+
+from resource_management.core.logger import Logger
+
+SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
+STACKS_DIR = os.path.join(SCRIPT_DIR, '../../../stacks/')
+PARENT_FILE = os.path.join(STACKS_DIR, 'service_advisor.py')
+
+try:
+  with open(PARENT_FILE, 'rb') as fp:
+    service_advisor = imp.load_module('service_advisor', fp, PARENT_FILE, ('.py', 'rb', imp.PY_SOURCE))
+except Exception as e:
+  traceback.print_exc()
+  print "Failed to load parent"
+
+
+class SliderServiceAdvisor(service_advisor.ServiceAdvisor):
+
+  def __init__(self, *args, **kwargs):
+    self.as_super = super(SliderServiceAdvisor, self)
+    self.as_super.__init__(*args, **kwargs)
+
+    # Always call these methods
+    self.modifyMastersWithMultipleInstances()
+    self.modifyCardinalitiesDict()
+    self.modifyHeapSizeProperties()
+    self.modifyNotValuableComponents()
+    self.modifyComponentsNotPreferableOnServer()
+    self.modifyComponentLayoutSchemes()
+
+  def modifyMastersWithMultipleInstances(self):
+    """
+    Modify the set of masters with multiple instances.
+    Must be overriden in child class.
+    """
+    # Nothing to do
+    pass
+
+  def modifyCardinalitiesDict(self):
+    """
+    Modify the dictionary of cardinalities.
+    Must be overriden in child class.
+    """
+    # Nothing to do
+    pass
+
+  def modifyHeapSizeProperties(self):
+    """
+    Modify the dictionary of heap size properties.
+    Must be overriden in child class.
+    """
+    self.heap_size_properties = {}
+
+  def modifyNotValuableComponents(self):
+    """
+    Modify the set of components whose host assignment is based on other services.
+    Must be overriden in child class.
+    """
+    # Nothing to do
+    pass
+
+  def modifyComponentsNotPreferableOnServer(self):
+    """
+    Modify the set of components that are not preferable on the server.
+    Must be overriden in child class.
+    """
+    # Nothing to do
+    pass
+
+  def modifyComponentLayoutSchemes(self):
+    """
+    Modify layout scheme dictionaries for components.
+    The scheme dictionary basically maps the number of hosts to
+    host index where component should exist.
+    Must be overriden in child class.
+    """
+    # Nothing to do
+    pass
+
+  def getServiceComponentLayoutValidations(self, services, hosts):
+    """
+    Get a list of errors.
+    Must be overriden in child class.
+    """
+    # Nothing to do
+    return []
+
+  def getServiceConfigurationRecommendations(self, configurations, clusterData, services,
hosts):
+    """
+    Entry point.
+    Must be overriden in child class.
+    """
+    Logger.info("Class: %s, Method: %s. Recommending Service Configurations." %
+                (self.__class__.__name__, inspect.stack()[0][3]))
+
+    # Nothing to do
+    pass
+
+  def getServiceConfigurationsValidationItems(self, configurations, recommendedDefaults,
services, hosts):
+    """
+    Entry point.
+    Validate configurations for the service. Return a list of errors.
+    The code for this function should be the same for each Service Advisor.
+    """
+    Logger.info("Class: %s, Method: %s. Validating Configurations." %
+                (self.__class__.__name__, inspect.stack()[0][3]))
+
+    # Nothing to do
+    return []
+


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