Module: Pwrake::GfarmPath

Defined in:
lib/pwrake/gfarm_feature.rb

Constant Summary collapse

@@local_mountpoint = 
mountpoint_of_cwd
@@fs_subdir = 
Pathname.new('/')

Class Method Summary collapse

Class Method Details

.from_fs(x) ⇒ Object 



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# File 'lib/pwrake/gfarm_feature.rb', line 66

def from_fs(x)
  Pathname(x).relative_path_from(@@fs_subdir)
end

.from_local(x) ⇒ Object 



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# File 'lib/pwrake/gfarm_feature.rb', line 57

def from_local(x)
  pn = Pathname(x)
  if pn.absolute?
    pn.relative_path_from(@@local_mountpoint)
  else
    Pathname.pwd.relative_path_from(@@local_mountpoint) + pn
  end
end

.fs_to_local(x) ⇒ Object 



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# File 'lib/pwrake/gfarm_feature.rb', line 84

def fs_to_local(x)
  x = from_fs(x)
  x = to_local(x)
  x.to_s
end

.gfarm2fs?(d = nil) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/pwrake/gfarm_feature.rb', line 43

def gfarm2fs?(d=nil)
  d ||= @@local_mountpoint
  mount_type = nil
  open('/etc/mtab','r') do |f|
    f.each_line do |l|
      if /#{d} (?:type )?(\S+)/o =~ l
        mount_type = $1
        break
      end
    end
  end
  /gfarm2fs/ =~ mount_type
end

.gfpath(file = '.') ⇒ Object 



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# File 'lib/pwrake/gfarm_feature.rb', line 90

def gfpath(file='.')
  begin
  IO.popen("gfstat '#{file}'") do |f|
    if /File: "([^"]+)"/ =~ f.gets #"
 return $1
    end
  end
  rescue
  end
  nil
end

.gfwhere(list) ⇒ Object 



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# File 'lib/pwrake/gfarm_feature.rb', line 102

def gfwhere(list)
  system "sync"
  result = {}
  count = 0
  cmd = "gfwhere"
  parse_proc = proc{|x|
    if count==1
      result[cmd[8..-1]] = x.split
    else
      x.scan(/^(?:gfarm:\/\/[^\/]+)?([^\n]+):\n([^\n]*)$/m) do |file,hosts|
        h = hosts.split
        result[file] = h if !h.empty?
      end
    end
  }

  list.each do |a|
    if a
      path = local_to_fs(a)
      if cmd.size + path.size + 1 > 20480 # 131000
        x = `#{cmd} 2> /dev/null`
        parse_proc.call(x)
        cmd = "gfwhere"
        count = 0
      end
      cmd << " "
      cmd << path
      count += 1
    end
  end
  if count > 0
    x = `#{cmd} 2> /dev/null`
    parse_proc.call(x)
  end
  result
end

.local_to_fs(x) ⇒ Object 



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# File 'lib/pwrake/gfarm_feature.rb', line 78

def local_to_fs(x)
  x = from_local(x)
  x = to_fs(x)
  x.to_s
end

.mountpoint ⇒ Object 



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# File 'lib/pwrake/gfarm_feature.rb', line 22

def mountpoint
  @@local_mountpoint
end

.mountpoint=(d) ⇒ Object 



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# File 'lib/pwrake/gfarm_feature.rb', line 18

def mountpoint=(d)
  @@local_mountpoint = Pathname.new(d)
end

.mountpoint_of_cwd ⇒ Object 



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# File 'lib/pwrake/gfarm_feature.rb', line 7

def mountpoint_of_cwd
  path = Pathname.pwd
  while !path.mountpoint?
    path = path.parent
  end
  path
end

.pwd ⇒ Object 



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# File 'lib/pwrake/gfarm_feature.rb', line 39

def pwd
  Pathname.pwd.relative_path_from(@@local_mountpoint)
end

.subdir ⇒ Object 



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# File 'lib/pwrake/gfarm_feature.rb', line 35

def subdir
  @@fs_subdir.to_s
end

.subdir=(d) ⇒ Object 



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# File 'lib/pwrake/gfarm_feature.rb', line 26

def subdir=(d)
  if d
    @@fs_subdir = Pathname.new(d)
    if @@fs_subdir.relative?
      @@fs_subdir = Pathname.new('/') + @@fs_subdir
    end
  end
end

.to_fs(x) ⇒ Object 



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# File 'lib/pwrake/gfarm_feature.rb', line 70

def to_fs(x)
  @@fs_subdir + Pathname(x)
end

.to_local(x) ⇒ Object 



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# File 'lib/pwrake/gfarm_feature.rb', line 74

def to_local(x)
  @@local_mountpoint + Pathname(x)
end