Partial search in Chef

Chef-Partial-Search.md

# Sample Chef partial search functions.
# These chef library functions require "partial_search" cookbook.
# Upload "partial_searck" cookbook and then modify the metadata.rb file to 
# make "partial_search" cookbook as dependency.
#

#
# The following two functions will return the IP of the node running grahite and the port
# to which data can be send for storage.
#
def get_graphite_vip
  ret = []
  results = partial_search(:node, 'recipes:bcpc\:\:graphite', 
               :keys => { 'vip' => [ 'bcpc', 'graphite', 'ip' ]}).each do |result|
    ret << result['vip']
  end
  return ret.uniq[0]
end

def get_graphite_port
  ret = []
  results = partial_search(:node, 'recipes:bcpc\:\:graphite', 
               :keys => { 'port' => [ 'bcpc', 'graphite', 'port' ]}).each do |result|
    ret << result['port']
  end
  return ret.uniq[0]
end

#
#The following returns an array of hash with the hostname and the bcpc.node_number attributes of all nodes which ran #bcpc-hadoop::zookeeper_server recipe
#
def get_host_attributes()
  srch_keys = {
         'hostname' => [ 'hostname' ],
         'node_number' => ['bcpc','node_number']
  }
  results = partial_search(:node, "recipes:bcpc-hadoop\\:\\:zookeeper_server",
               :keys => srch_keys)
  return results
end