Class: Chef::Provider::Mount::Mount

Inherits:
Chef::Provider::Mount show all
Includes:
Mixin::ShellOut
Defined in:
lib/chef/provider/mount/mount.rb

Instance Attribute Summary collapse

Attributes inherited from Chef::Provider

#current_resource, #new_resource, #run_context

Instance Method Summary collapse

Methods included from Mixin::ShellOut

#shell_out, #shell_out!

Methods inherited from Chef::Provider::Mount

#action_disable, #action_enable, #action_mount, #action_remount, #action_umount

Methods included from Mixin::Command

#chdir_or_tmpdir, #handle_command_failures, #output_of_command, #run_command, #run_command_with_systems_locale

Methods included from Mixin::Command::Unix

#popen4

Methods included from Mixin::Command::Windows

#popen4

Methods inherited from Chef::Provider

#action_nothing, build_from_file, #cookbook_name, #node, #resource_collection

Methods included from Mixin::ConvertToClassName

#convert_to_class_name, #convert_to_snake_case, #filename_to_qualified_string, #snake_case_basename

Methods included from Mixin::RecipeDefinitionDSLCore

#method_missing

Methods included from Mixin::Language

#data_bag, #data_bag_item, #platform?, #search, #value_for_platform

Constructor Details

#initialize(new_resource, run_context) ⇒ Mount



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# File 'lib/chef/provider/mount/mount.rb', line 29

def initialize(new_resource, run_context)
  super
  @real_device = nil
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class Chef::Mixin::RecipeDefinitionDSLCore

Instance Attribute Details

#real_deviceObject

Returns the value of attribute real_device



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# File 'lib/chef/provider/mount/mount.rb', line 33

def real_device
  @real_device
end

Instance Method Details

#device_should_exist?Boolean



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# File 'lib/chef/provider/mount/mount.rb', line 175

def device_should_exist?
  @new_resource.device !~ /:/ && @new_resource.device !~ /\/\// && @new_resource.device != "tmpfs" && @new_resource.fstype != 'fuse'
end

#disable_fsObject



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# File 'lib/chef/provider/mount/mount.rb', line 152

def disable_fs
  if @current_resource.enabled
    contents = []
    
    found = false
    ::File.readlines("/etc/fstab").reverse_each do |line|
      if !found && line =~ /^#{device_fstab_regex}\s+#{Regexp.escape(@new_resource.mount_point)}/
        found = true
        Chef::Log.debug("#{@new_resource} is removed from fstab")
        next
      else
        contents << line
      end
    end
    
    ::File.open("/etc/fstab", "w") do |fstab|
      contents.reverse_each { |line| fstab.puts line}
    end
  else
    Chef::Log.debug("#{@new_resource} is not enabled - nothing to do")
  end
end

#enable_fsObject



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# File 'lib/chef/provider/mount/mount.rb', line 135

def enable_fs
  if @current_resource.enabled && mount_options_unchanged?
    Chef::Log.debug("#{@new_resource} is already enabled - nothing to do")
    return nil
  end
  
  if @current_resource.enabled
    # The current options don't match what we have, so
    # disable, then enable.
    disable_fs
  end
  ::File.open("/etc/fstab", "a") do |fstab|
    fstab.puts("#{device_fstab} #{@new_resource.mount_point} #{@new_resource.fstype} #{@new_resource.options.nil? ? "defaults" : @new_resource.options.join(",")} #{@new_resource.dump} #{@new_resource.pass}")
    Chef::Log.debug("#{@new_resource} is enabled at #{@new_resource.mount_point}")
  end
end

#enabled?Boolean



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# File 'lib/chef/provider/mount/mount.rb', line 53

def enabled?
  # Check to see if there is a entry in /etc/fstab. Last entry for a volume wins.
  enabled = false
  ::File.foreach("/etc/fstab") do |line|
    case line
    when /^[#\s]/
      next
    when /^#{device_fstab_regex}\s+#{Regexp.escape(@new_resource.mount_point)}\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)/
      enabled = true
      @current_resource.fstype($1)
      @current_resource.options($2)
      @current_resource.dump($3.to_i)
      @current_resource.pass($4.to_i)
      Chef::Log.debug("Found mount #{device_fstab} to #{@new_resource.mount_point} in /etc/fstab")
      next
    when /^[\/\w]+\s+#{Regexp.escape(@new_resource.mount_point)}\s+/
      enabled = false
      Chef::Log.debug("Found conflicting mount point #{@new_resource.mount_point} in /etc/fstab")
    end
  end
  @current_resource.enabled(enabled)
end

#load_current_resourceObject



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# File 'lib/chef/provider/mount/mount.rb', line 35

def load_current_resource
  @current_resource = Chef::Resource::Mount.new(@new_resource.name)
  @current_resource.mount_point(@new_resource.mount_point)
  @current_resource.device(@new_resource.device)
  mounted?
  enabled?
end

#mount_fsObject



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# File 'lib/chef/provider/mount/mount.rb', line 91

def mount_fs
  unless @current_resource.mounted
    mountable?
    command = "mount -t #{@new_resource.fstype}"
    command << " -o #{@new_resource.options.join(',')}" unless @new_resource.options.nil? || @new_resource.options.empty?
    command << case @new_resource.device_type
    when :device
      " #{device_real}"
    when :label
      " -L #{@new_resource.device}"
    when :uuid
      " -U #{@new_resource.device}"
    end
    command << " #{@new_resource.mount_point}"
    shell_out!(command)
    Chef::Log.debug("#{@new_resource} is mounted at #{@new_resource.mount_point}")
  else
    Chef::Log.debug("#{@new_resource} is already mounted at #{@new_resource.mount_point}")
  end
end

#mountable?Boolean



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# File 'lib/chef/provider/mount/mount.rb', line 43

def mountable?
  # only check for existence of non-remote devices
  if (device_should_exist? && !::File.exists?(device_real) )
    raise Chef::Exceptions::Mount, "Device #{@new_resource.device} does not exist"
  elsif( !::File.exists?(@new_resource.mount_point) )
    raise Chef::Exceptions::Mount, "Mount point #{@new_resource.mount_point} does not exist"
  end
  return true
end

#mounted?Boolean



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# File 'lib/chef/provider/mount/mount.rb', line 76

def mounted?
  mounted = false
  shell_out!("mount").stdout.each_line do |line|
    case line
    when /^#{device_mount_regex}\s+on\s+#{Regexp.escape(@new_resource.mount_point)}/
      mounted = true
      Chef::Log.debug("Special device #{device_logstring} mounted as #{@new_resource.mount_point}")
    when /^([\/\w])+\son\s#{Regexp.escape(@new_resource.mount_point)}\s+/
      mounted = false
      Chef::Log.debug("Special device #{$~[1]} mounted as #{@new_resource.mount_point}")
    end
  end
  @current_resource.mounted(mounted)
end

#remount_fsObject



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# File 'lib/chef/provider/mount/mount.rb', line 121

def remount_fs
  if @current_resource.mounted and @new_resource.supports[:remount]
    shell_out!("mount -o remount #{@new_resource.mount_point}")
    @new_resource.updated_by_last_action(true)
    Chef::Log.debug("#{@new_resource} is remounted at #{@new_resource.mount_point}")
  elsif @current_resource.mounted
    umount_fs
    sleep 1
    mount_fs
  else
    Chef::Log.debug("#{@new_resource} is not mounted at #{@new_resource.mount_point} - nothing to do")
  end
end

#umount_fsObject



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# File 'lib/chef/provider/mount/mount.rb', line 112

def umount_fs
  if @current_resource.mounted
    shell_out!("umount #{@new_resource.mount_point}")
    Chef::Log.debug("#{@new_resource} is no longer mounted at #{@new_resource.mount_point}")
  else
    Chef::Log.debug("#{@new_resource} is not mounted at #{@new_resource.mount_point}")
  end
end