Class: Ramaze::Bin::Status

Inherits:
Object show all
Includes:
Helper
Defined in:
lib/ramaze/bin/status.rb

Overview

The status command can be used to show the details, such as the PID and the CPU usage, of a running Ramaze application.

Usage

ramaze status
ramaze status /home/projects/ramaze/ramaze.pid

Author:

Since:

Constant Summary

Description =

Description of this command, displayed in the glboal help message.

Since:

  • 21-07-2011

'Shows the status of a running Ramaze application'
<<-TXT.strip
Shows the status of a running Ramaze application. If a PID is specified this
command will use that PID, otherwise it will try to look for a PID in the
current directory.

Usage:
  ramaze status [PID] [OPTIONS]

Example:
  ramaze status blog/blog.pid
TXT
Statistics =

String containing the message that's used to display all statistics

Since:

  • 21-07-2011

<<-TXT.strip
Ramaze is running!
Name: %s
Command Line: %s
Virtual Size: %s
Started: %s
Exec Path: %s
Status: %s
TXT

Instance Method Summary (collapse)

Methods included from Helper

#is_running?, #is_windows?, #rackup_path

Constructor Details

- (Status) initialize

Creates a new instance of the command and sets all the option parser options.

Author:

  • Yorick Peterse

Since:

  • 21-07-2011



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# File 'lib/ramaze/bin/status.rb', line 55

def initialize
  @options = OptionParser.new do |opt|
    opt.banner         = Banner
    opt.summary_indent = '  '

    opt.separator "\nOptions:\n"

    opt.on('-h', '--help', 'Shows this help message') do
      puts @options
      exit
    end
  end
end

Instance Method Details

- (Object) run(argv = [])

Runs the command based on the given command line arguments.

Parameters:

  • argv (Array) (defaults to: []) —

    Array containing all teh command line arguments.

Author:

  • Yorick Peterse

  • TJ Vanderpoel

Since:

  • 21-07-2011



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# File 'lib/ramaze/bin/status.rb', line 77

def run(argv = [])
  @options.parse!(argv)

  pid_path = argv.delete_at(0)
  dirname  = Pathname.new('.').realpath.basename.to_s
  pid_path = File.join(Dir.pwd, dirname + '.pid') if pid_path.nil?

  # Is it a directory?
  if File.directory?(pid_path)
    pid_path = File.join(pid_path, File.basename(pid_path) + '.pid')
  end

  pid_path = Pathname.new(pid_path).expand_path.to_s

  if !File.exist?(pid_path)
    abort "The PID #{pid_path} does not exist"
  end

  # Is the app running?
  unless is_running?(pid_path)
    abort "The Ramaze application for #{pid_path} isn't running"
  end

  pid = File.read(pid_path).to_i

  # Gather various statistics about the process
  if is_windows?
    wmi       = WIN32OLE.connect("winmgmts://")
    ours      = []
    processes = wmi.ExecQuery(
      "select * from win32_process where ProcessId = #{pid}"
    )

    processes.each do |p|
      ours << [
        p.Name,
        p.CommandLine,
        p.VirtualSize,
        p.CreationDate,
        p.ExecutablePath,
        p.Status
      ]
    end

    puts Statistics % ours.first
  # Unix like systems
  else
    if File.directory?(proc_dir = Pathname.new('/proc'))
      proc_dir = proc_dir.join(pid.to_s)
      # If we have a "stat" file, we'll assume linux and get as much info
      # as we can
      if File.file?(stat_file = proc_dir.join("stat"))
        stats = File.read(stat_file).split

        puts Statistics % [
          nil,
          File.read(proc_dir.join("cmdline")).split("\000").join(" "),
          "%s k" % (stats[22].to_f / 1024),
          File.mtime(proc_dir),
          File.readlink(proc_dir.join("exe")),
          stats[2]
        ]
      end
    # /proc does not exist, use "ps"
    else
      begin
        puts %x{ps l #{pid}}
      rescue
        puts "Sadly no more information is available"
      end
    end
  end
end