crowbar/crowbar-hadoop

#
# Cookbook Name: hive
# Recipe: hive_service.rb
#
# Copyright (c) 2011 Dell Inc.
#
# 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.
#

class HiveService < ServiceObject
  def initialize(thelogger)
    @bc_name = "hive"
    @logger = thelogger
  end

  def create_proposal
    @logger.debug("hive create_proposal: entering")
    base = super

    # Get the node list.
    nodes = NodeObject.all
    nodes.delete_if { |n| n.nil? }

    # Find all hadoop edge nodes.
    edge_nodes = nodes.find_all { |n| n.role? "hadoop-edgenode" or n.role? "clouderamanager-edgenode" }
    edge_fqdns = []
    edge_nodes.each { |x|
      next if x.nil?
      edge_fqdns << x[:fqdn] if x[:fqdn] && !x[:fqdn].empty?
    }

    # Add proposal elements.
    base["deployment"]["hive"]["elements"] = {}
    if edge_fqdns && edge_fqdns.length > 0
      # @logger.info("GOT EDGE " + edge_fqdns.to_s)
      base["deployment"]["hive"]["elements"]["hive-interpreter"] = edge_fqdns
    else
      @logger.debug("hive create_proposal: No edge nodes found")
    end

    # @logger.debug("hive create_proposal: #{base.to_json}")
    @logger.debug("hive create_proposal: exiting")
    base
  end
end