Class: Exec::ClusterAllocate

Inherits:
ExecutableCommand show all
Defined in:
lib/exec/cluster_allocate.rb

Overview

Allows user to allocate node on a cluster

Defined Under Namespace

Classes: CustomCommandOption

Instance Attribute Summary

Attributes inherited from ExecutableCommand

#argv, #command_name, #logger, #options, #stderr, #stdin, #stdout, #values

Instance Method Summary collapse

Methods inherited from ExecutableCommand

#check_parameters, #create_logger, #run

Constructor Details

#initialize(argv, stdin, stdout, stderr, command_name) ⇒ ClusterAllocate

Note:

Overrides default constructor by passing CustomCommandOption to super().

Default constructor of the class.



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# File 'lib/exec/cluster_allocate.rb', line 26

def initialize(argv, stdin, stdout, stderr, command_name)
  super(argv, stdin, stdout, stderr, command_name, CustomCommandOption)
end

Instance Method Details

#exec ⇒ Object (private) 



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# File 'lib/exec/cluster_allocate.rb', line 39

def exec
  @logger.info("Exec::ClusterAllocate   Executing ClusterAllocate")
  @logger.info("Exec::ClusterAllocate   Allocate node on the vcluster '#{@values['cluster']}'...")
  Color::print_log("NONE", "Allocate node on the vcluster '#{@values['cluster']}'...", @stdout)

  output = ""

  if @values['all']
    ###### Allocate all nodes ######
    @logger.info("executing CrowbarNodeList")
    cmd = Command::CrowbarNodeList.new(@logger, "Ready")
    list_nodes = cmd.exec

    list_nodes_filter = Array.new
    list_nodes.each { |node|
      list_nodes_filter << node.split(" ").at(0).strip.to_s
    }

    cmd = Command::CrowbarClusterAllocate.new(@logger, @values['cluster_name'], true, list_nodes_filter)
    output += cmd.exec()

    Color::echo_ok(@stdout)
    output.each{|out|
      Color::print_log("NONE", "#{out}", @stdout)
      Color::echo_ok(@stdout)
    }
  elsif @values['list_nodes'] != nil
    ###### Allocate a list of nodes ######
    cmd = Command::CrowbarNodeList.new(@logger, "Ready")
    list_nodes_ready = cmd.exec()

    list_nodes = Hash.new
    @values['list_nodes'].split(" ").each{|node|
      list_nodes[node] = node
    }

    list_nodes_filter = Array.new
    list_nodes.each {|key, value|
      node_exists = false
      list_nodes_ready.each{|node|
        if node == key
          node_exists = true
        end
      }

      if !node_exists
        raise NodeNotExistsError.new("The node '#{key}' is not exists.")
      end

      list_nodes_filter << key.strip.to_s
    }

    cmd = Command::CrowbarClusterAllocate.new(@logger, @values['cluster_name'], false, list_nodes_filter)
    output += cmd.exec()

    Color::echo_ok(@stdout)
    output.each{|out|
      Color::print_log("NONE", "#{out}", @stdout)
      Color::echo_ok(@stdout)
    }
  end

  @logger.info("Exec::ClusterAllocate   Allocate node on the ambari cluster '#{@values['cluster']}'...")
  Color::print_log("NONE", "Allocate node on the vcluster '#{@values['cluster']}'...", @stdout)

  output = ""

  ###### Allocate nodes on the ambari cluster ######
  cmd = Command::AmbariHostList.new(@values['cluster_name'])
  list_hosts = cmd.exec()

  list_nodes_filter.each do |node|
    host_exists = false
    attempts = 0
    node = "#{@values['cluster_name']}-#{node.gsub(/\s+/, "").strip}"

    list_hosts.each{|host|
      if host.strip == node.strip
        host_exists = true
      end
    }

    if !host_exists
      begin
        cmd = Command::AmbariAddHost.new(@values['cluster_name'], node)
        cmd.exec()
      rescue => e
        attempts += 1
        sleep 5
        retry unless attempts > 10
        raise ClusterAllocateError.new("Allocate the host '#{node}' to the ambari cluster '#{@values['cluster_name']}'.")
      end
      output += "Add the host #{node} into the cluster #{@values['cluster_name']}.\n"
    else
      output += "The host #{node} into the cluster #{@values['cluster_name']} is already exists...\n"
    end

    Color::echo_ok(@stdout)
    output.each{|out|
      Color::print_log("NONE", "#{out}", @stdout)
      Color::echo_ok(@stdout)
    }
  end
end

#set_options ⇒ Object (private)

Parse and check the parameters of the function.



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# File 'lib/exec/cluster_allocate.rb', line 33

def set_options
  @options.add_option("a", "all", "All nodes which are ready.", false)
  @options.add_option("C", "cluster_name", "The name of the vcluster .", true, true, method(:check_cluster_name))
  @options.add_option("n", "list_nodes", "The list of nodes.", false, true, method(:check_crowbar_node_name))
end