Class: Exec::ServiceInstall

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

Overview

Allows the user to install services.

Author:

  • tnoguer

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, #initialize, #run

Constructor Details

This class inherits a constructor from Exec::ExecutableCommand

Instance Method Details

#exec ⇒ Object (private)

Execution of the command



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# File 'lib/exec/service_install.rb', line 35

def exec
  msg = "Unknown combination of attributes... (should never happend)"
  cmd = nil

  if (!@values["host"].nil? && !@values["component"].nil?) || (!@values["service"].nil? && !@values["host"].nil? && !@values["component"].nil?)
    # 3
    # one component on one host
    msg = "Install components #{@values["component"]} on host #{@values["host"]} (@cluster #{@values["cluster"]})."
    cmd = Command::AmbariInstallHostComponent.new(@values["cluster"], @values["component"], @values["host"])

  elsif !@values["component"].nil? || (!@values["service"].nil? && !@values["component"].nil?)
    # 1
    # one component on all hosts
    msg = "Install all components (@cluster #{@values["cluster"]})."
    cmd = Command::AmbariInstallComponent.new(@values["cluster"], @values["component"])

  elsif !@values["service"].nil? && !@values["host"].nil?
    # 5
    # all component on one host for one service
    # @todo it is the same case than number 3
    msg = "Install components #{@values["component"]} of service #{@values["service"]} on host #{@values["host"]} (@cluster #{@values["cluster"]})."
    cmd = Command::AmbariInstallHostComponents.new(@values["cluster"], @values["service"], @values["host"])

  elsif !@values["host"].nil?
    # 2
    # all component on one host
    msg = "Install all components on host #{@values["host"]} (@cluster #{@values["cluster"]})."
    cmd = Command::AmbariInstallHost.new(@values["cluster"], @values["host"])

  elsif !@values["service"].nil?
    # 4
    # all component on all hosts for one service
    msg = "Install all components #{@values["component"]} of service #{@values["service"]} on all hosts (@cluster #{@values["cluster"]})."
    cmd = Command::AmbariInstallServiceComponents.new(@values["cluster"], @values["service"])

  elsif @values["service"].nil? && @values["host"].nil? && @values["component"].nil?
    # 6
    # all component on all host for all service
    msg = "Install all components of all services on all hosts (@cluster #{@values["cluster"]})."
    cmd = Command::AmbariInstallCluster.new(@values["cluster"])

  else
    raise StandardError(msg)
  end

  Color::print_log("NONE", msg, @stdout)
  cmd.exec()
  Color::echo_ok(@stdout)

end

#set_options ⇒ Object (private)

Parse and check the parameters of the function.

Author:

  • tmarmin



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# File 'lib/exec/service_install.rb', line 24

def set_options
  @logger.info("setting options")
  @options.add_option("C", "cluster", "The virtual cluster name.", true, true, method(:check_cluster_name))
  @options.add_option("s", "service", "Limit request to this service.", false, true, method(:check_hadoop_service_name))
  @options.add_option("H", "host", "Limit request to this host.", false, true, method(:check_ambari_host_name))
  @options.add_option("c", "component", "Limit request to this component type.", false, true, method(:check_hadoop_component_name))
  @options.add_option("f", "follow", "Follow completion of the request.", false)
end