Module: Appserver::Utils

Defined in:
lib/appserver/utils.rb

Class Method Summary collapse

Class Method Details

.find_in_path(name) ⇒ Object 



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# File 'lib/appserver/utils.rb', line 8

def find_in_path (name)
  ENV['PATH'].split(':').each do |path|
    fn = File.join(path, name)
    return fn if File.executable?(fn)
  end
  nil
end

.number_of_cpus ⇒ Object 



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# File 'lib/appserver/utils.rb', line 24

def number_of_cpus
  if File.exist?('/proc/cpuinfo')
    File.readlines('/proc/cpuinfo').grep(/^processor\s+:\s+\d+/).size
  end
end

.safe_replace_file(filename) {|tempfile| ... } ⇒ Object

Yields:

  • (tempfile) 


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# File 'lib/appserver/utils.rb', line 30

def safe_replace_file (filename)
  tempfile = Tempfile.new(File.basename(filename) + '.', File.dirname(filename))
  if File.exist?(filename)
    tempfile.chown(File.stat(filename).uid, File.stat(filename).gid)
    tempfile.chmod(File.stat(filename).mode)
  end
  yield tempfile
  tempfile.close
  File.unlink(filename) if File.exist?(filename)
  File.rename(tempfile.path, filename)
end

.system_domainname ⇒ Object 



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# File 'lib/appserver/utils.rb', line 20

def system_domainname
  system_hostname.sub(/^[^.]+\./, '')
end

.system_hostname ⇒ Object 



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# File 'lib/appserver/utils.rb', line 16

def system_hostname
  Socket.gethostname
end