Added a simple process inspector
git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@4298 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
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railties/lib/commands/process/inspector.rb
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68
railties/lib/commands/process/inspector.rb
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require 'optparse'
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if RUBY_PLATFORM =~ /mswin32/ then abort("Reaper is only for Unix") end
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OPTIONS = {
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:pid_path => File.expand_path(RAILS_ROOT + '/tmp/pids'),
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:pattern => "dispatch.*.pid",
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:ps => "ps -o user,start,etime,pcpu,vsz,majflt,command -p %s"
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}
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class Inspector
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def self.inspect(pid_path, pattern)
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new(pid_path, pattern).inspect
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end
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def initialize(pid_path, pattern)
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@pid_path, @pattern = pid_path, pattern
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end
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def inspect
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for process in find_processes
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puts "#{File.basename(process[:pid_file])}:"
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puts(`#{OPTIONS[:ps] % process[:pid]}`)
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puts
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end
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end
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private
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def find_processes
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pid_files.inject([]) do |pids, pid_file|
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pids << { :pid_file => pid_file, :pid => File.read(pid_file).to_i }
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end
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end
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def pid_files
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Dir.glob(@pid_path + "/" + @pattern)
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end
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end
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ARGV.options do |opts|
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opts.banner = "Usage: inspector [options]"
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opts.separator ""
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opts.on <<-EOF
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Description:
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Get the lowdown on processes.
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Examples:
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inspector
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inspector -s 'ps -o user,start,majflt,pcpu,vsz -p %s'
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EOF
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opts.on(" Options:")
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opts.on("-s", "--ps=command", "default: #{OPTIONS[:ps]}", String) { |OPTIONS[:ps]| }
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opts.on("-p", "--pidpath=path", "default: #{OPTIONS[:pid_path]}", String) { |OPTIONS[:pid_path]| }
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opts.on("-r", "--pattern=pattern", "default: #{OPTIONS[:pattern]}", String) { |OPTIONS[:pattern]| }
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opts.separator ""
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opts.on("-h", "--help", "Show this help message.") { puts opts; exit }
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opts.parse!
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end
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Inspector.inspect(OPTIONS[:pid_path], OPTIONS[:pattern])
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