68 lines
1.8 KiB
Ruby
68 lines
1.8 KiB
Ruby
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require 'optparse'
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if RUBY_PLATFORM =~ /mswin32/ then abort("Inspector 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 pid,state,user,start,time,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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header = `#{OPTIONS[:ps] % 1}`.split("\n")[0] + "\n"
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lines = pids.collect { |pid| `#{OPTIONS[:ps] % pid}`.split("\n")[1] }
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puts(header + lines.join("\n"))
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end
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private
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def pids
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pid_files.collect do |pid_file|
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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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Displays system information about Rails dispatchers (or other processes that use pid files) through
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the ps command.
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Examples:
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inspector # default ps on all tmp/pids/dispatch.*.pid files
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inspector -s 'ps -o user,start,majflt,pcpu,vsz -p %s' # custom ps, %s is where the pid is interleaved
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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) { |v| OPTIONS[:ps] = v }
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opts.on("-p", "--pidpath=path", "default: #{OPTIONS[:pid_path]}", String) { |v| OPTIONS[:pid_path] = v }
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opts.on("-r", "--pattern=pattern", "default: #{OPTIONS[:pattern]}", String) { |v| OPTIONS[:pattern] = v }
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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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