Class: GRI::Trad

Inherits:
Object show all
Defined in:
lib/gri/trad.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Trad

Returns a new instance of Trad.



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# File 'lib/gri/trad.rb', line 5

def initialize
  @acls = nil
  @tra_dir = nil
end

Instance Method Details

#allowed?(acls, remote_addr) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/gri/trad.rb', line 24

def allowed? acls, remote_addr
  acls.detect {|re| remote_addr =~ re}
end

#call(env) ⇒ Object 



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# File 'lib/gri/trad.rb', line 28

def call env
  @acls ||= load_acls Config
  unless allowed?(@acls, env['REMOTE_ADDR'])
    return [401, {}, ['Unauthorized']]
  end

  @root_dir ||= Config['root-dir'] || Config::ROOT_PATH
  @tra_dir ||= (Config['tra-dir'] || @root_dir + '/tra')

  req = Rack::Request.new env
  serve @tra_dir, req.path_info, req
end

#load_acls(config) ⇒ Object 



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# File 'lib/gri/trad.rb', line 14

def load_acls config
  acls = config.getvar 'acl-permit'
  acls = acls ? acls.map {|pat| Regexp.new pat} : []
  acls.push(/^127\.0\.0\.1$/)
  acls.push(/^::ffff:127\.0\.0\.1$/)
  acls.push(/^::1$/)
  puts "acls: #{acls.join(',')}" if $debug
  acls
end

#optparse(opts) ⇒ Object 



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# File 'lib/gri/trad.rb', line 178

def optparse opts
  op = OptionParser.new
  op.on('--debug') {$debug = true; STDOUT.sync = true}
  op.on('-c', '--config-path=PATH') {|arg| opts[:config_path] = arg}
  op.on('-d', '--daemonize') {opts[:daemonize] = true}
  op.on('-b', '--bind-address=ADDRESS') {|arg| opts[:bind_address] = arg}
  op.on('-p', '--port=PORT', Integer) {|arg| opts[:port] = arg}
end

#public_dir ⇒ Object 



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# File 'lib/gri/trad.rb', line 10

def public_dir
  '/notexist'
end

#run(options = {}) ⇒ Object 



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# File 'lib/gri/trad.rb', line 82

def run options={}
  status = :init
  optparser = optparse options
  optparser.parse!
  Process.daemon true if options[:daemonize] and !$debug
  config_path = options[:config_path] || GRI::Config::DEFAULT_PATH
  config = GRI::Config.init config_path
  @acls ||= load_acls config
  @root_dir ||= config['root-dir'] || GRI::Config::ROOT_PATH
  @tra_dir ||= (config['tra-dir'] || @root_dir + '/tra')
  log_dir = config['log-dir'] || @root_dir + '/log'
  Dir.mkdir log_dir unless File.exist? log_dir
  Log.init "#{log_dir}/#{optparser.program_name}.log"

  Signal.trap(:USR1){
    Log.info "reloading acls"
    config = GRI::Config.init config_path
    @acls = load_acls config
  }

  Signal.trap(:WINCH){
    Log.info "going to shutdown"
    status = :shutdown
  }

  bind_address = options[:bind_address] || '0.0.0.0'
  port = options[:port] || 7079
  server_sock = TCPServer.new bind_address, port
  rs0 = [server_sock]
  params = {}
  status = :start
  while status != :stop
    if status == :shutdown and rs0.size == 1 and rs0[0].kind_of?(TCPServer)
      Log.info "shutting down"
      server_sock.close
      status = :stop
      next
    end
    next unless (a = IO.select(rs0, nil, nil, 1))
    rs, = a
    for io in rs
      begin
        if io.kind_of? TCPServer
          sock = server_sock.accept
          peername = sock.peeraddr[2]
          peeraddr = sock.peeraddr[3]
          if status == :shutdown
            sock.close
            Log.info "#{peeraddr}: reject due to shutting down"
            next
          elsif allowed?(@acls, peeraddr)
            puts "#{peeraddr}: accespt #{sock.object_id}" if $debug
          else
            sock.close
            puts "#{peeraddr}: reject" if $debug
            next
          end
          rs0.push sock
        elsif io.eof?
          io.close
          rs0.delete io
        else
          line = io.gets
          line.chomp!
          if line =~ /\A(\/\w+)\s*(\S+)?$/ #/
            pi = $1
            qs = $2
            params.clear
            (qs || '').split(/[&;] */n).each {|item|
              k, v = item.split('=', 2)
              params[k] = v
            }
            puts "#{io.object_id}: serve #{pi} #{params.inspect}" if $debug
            code, h, body = serve @tra_dir, pi, params
            h.each {|k, v| io.puts "#{k}: #{v}"}
            io.puts
            body.each {|l|
              if l =~ /\A\./
                io.puts ".#{l}"
              else
                io.puts l
              end
            }
            io.puts "."
          end
        end
      rescue Exception
        Log.error "ERROR: #{$!}: #{$@.inspect}"
      end
    end
  end

  Log.info "stopped"
  exit 0
end

#serve(tra_dir, path_info, params) ⇒ Object 



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# File 'lib/gri/trad.rb', line 41

def serve tra_dir, path_info, params
  headers = {}
  body = []

  if path_info =~ /\A\/get\b/ #/
    s = params['s']
    dir = "#{tra_dir}/#{params['h']}"
    if File.directory?(dir)
      t = Time.at(params['t'].to_i)
      pos = params['pos'].to_i
      ldb = LocalLDB.new dir
      headers.clear
      prev_time = 0
      ldb.getl_after(s, t, pos) {|time, line, pos|
        if body.size > 1000 and time.to_i > prev_time
          headers['X-GRI-Continue'] = "#{prev_time.to_s} #{pos}"
          break
        end
        prev_time = time.to_i
        body.push(line+"\n")
      }
      headers['X-GRI-Pos'] = pos.to_s
    end
  elsif path_info =~ /\A\/get_data_names\b/ #/
    dir = "#{tra_dir}/#{params['h']}"
    ldb = LocalLDB.new dir
    ldb.get_data_names.each {|k, v| body.push "#{k}_#{v}\n"}
  elsif path_info =~ /\A\/gritab\b/ #/
    gritab_path = Config['gritab-path'] || @root_dir + '/gritab'
    if File.exist? gritab_path
      open(gritab_path) {|f|
        while line = f.gets
          next if line =~ /\A\s*#|\A\z/
          body.push line
        end
      }
    end
  end
  [200, headers, body]
end