Module: LogfileTransfer

Defined in:
lib/logfile_transfer.rb

Defined Under Namespace

Classes: FileMonitorObj, Handler

Constant Summary collapse

STOP_CMD_FILE_NAME = 
'.sync_cmd_stop'
PROMPT_CMDLINE = 
'ruby your.rb start [config.yaml]|stop|status'
PROMPT_RUNNING = 
'daemon is running.'
PROMPT_EXITING = 
'daemon is exiting.'
PROMPT_STARTING = 
'daemon is starting.'
PROMPT_NO_RUNNING = 
'daemon no running.'

Class Method Summary collapse

Class Method Details

.close_files(curr_time = 0) ⇒ Object 



75
76
77
78
79
80
81
82
83
84
85
86
 
# File 'lib/logfile_transfer.rb', line 75

def self.close_files curr_time = 0
  @files.delete_if do |log_file_name, log_files|
    if (curr_time - log_files[2]) > 86400
      log "close #{log_file_name}"
      log_files[0].close
      log_files[1].close
      true
    else
      false
    end
  end
end

.conn(cmd) ⇒ Object 



60
61
62
63
64
65
66
67
68
69
70
71
72
73
 
# File 'lib/logfile_transfer.rb', line 60

def self.conn cmd
  s = TCPSocket.open(@hostname, @port)
  s.puts cmd

  while line = s.gets
    puts line.chop
  end

  true
rescue =>e
  false
ensure  
  s.close if s
end

.daemon ⇒ Object 



149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
 
# File 'lib/logfile_transfer.rb', line 149

def self.daemon
  @monitor_paths = []
  YAML.load_file(@config_file_name).each do |obj|
    log "absolute path: #{obj.absolute_path}"
    log "dir disallow: #{obj.dir_disallow}"
    log "file disallow: #{obj.file_disallow}"
    log "file allow: #{obj.file_allow}"
    obj.patterns.each do |pattern, handlers|
      log "pattern: #{pattern}"
      handlers.each do |handler|
        handler.init
        log "- - #{handler.class} initialized."
      end
    end

    @monitor_paths << obj.absolute_path
    @threads << Thread.new do
      begin
        m = FileMonitor.new(obj.absolute_path)

        m.filter_dirs do
          obj.dir_disallow.each do |dir|
            disallow /#{dir}/
          end
          disallow /loc$/
        end

        m.filter_files do
          obj.file_disallow.each do |file|
            disallow /#{file}/
          end
          obj.file_allow.each do |file|
            allow /#{file}/
          end
          allow /#{STOP_CMD_FILE_NAME}$/
        end

        m.run do |events|
          break if @exit_flag
          events.each do |event|
            flags = event.flags
            if flags.include?(:modify) or flags.include?(:moved_to) or flags.include?(:create)
              transfer event.absolute_name, obj
            end
          end
        end

        log "#{obj.absolute_path} file monitor thread exit."
      rescue =>err
        log err
      end
    end
  end

  @threads << Thread.new do
    server = TCPServer.open(@hostname, @port)

    loop do
      client = server.accept

      cmd = client.gets

      case cmd.chop
      when 'stop'
        client.puts(PROMPT_EXITING)
        @exit_flag = true;

        @monitor_paths.each do |absolute_path|
          system "touch #{absolute_path}/#{STOP_CMD_FILE_NAME}"
        end

        sleep 1

        @monitor_paths.each do |absolute_path|
          system "unlink #{absolute_path}/#{STOP_CMD_FILE_NAME}"
        end

        client.close

        break;
      when 'status'
        close_files Time.now.to_i
        client.puts(PROMPT_RUNNING)
        client.puts(@config_file_title)
        @files.each do |log_file_name, log_files|
          client.puts "log file: #{log_file_name}, loc file: #{log_files[1].path}, open time: #{Time.at(log_files[2])}, lines: #{log_files[3]}"
        end
      end

      client.close
    end

    close_files
    @daemon_log_file.close
    log 'server.close'
    server.close
  end

  @threads.each { |t| t.join }
end

.daemonize_app(working_directory) ⇒ Object 



46
47
48
49
50
51
52
53
54
55
56
57
58
 
# File 'lib/logfile_transfer.rb', line 46

def self.daemonize_app working_directory
  if RUBY_VERSION < "1.9"
    exit if fork
    Process.setsid
    exit if fork
    Dir.chdir working_directory
    STDIN.reopen "/dev/null"
    STDOUT.reopen "/dev/null", "a"
    STDERR.reopen "/dev/null", "a"
  else
    Process.daemon
  end 
end

.log(msg) ⇒ Object 



42
43
44
 
# File 'lib/logfile_transfer.rb', line 42

def self.log msg
  @daemon_log_file.puts msg
end

.run(argv, port, working_directory) ⇒ Object 



250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
 
# File 'lib/logfile_transfer.rb', line 250

def self.run argv, port, working_directory
  @port = port

  if argv.length < 1
    puts PROMPT_CMDLINE
    exit
  end

  cmd = argv[0]

  @exit_flag = false;

  case cmd
  when 'start'
    if argv.length < 2
      @config_file_name = "#{working_directory}/config.yaml"
    elsif argv[1][0] == '/'
      @config_file_name = argv[1]
    else
      @config_file_name = "#{working_directory}/#{argv[1]}"
    end

    @config_file_title = "config file: #{@config_file_name}"

    unless File.exist? @config_file_name
      puts "#{@config_file_title} no exist!"
      exit
    end

    exit if conn 'status'

    puts PROMPT_STARTING

    daemonize_app working_directory

    @daemon_log_file_name = "#{working_directory}/#{@daemon_log_file_name}"
    @daemon_log_file = File.new @daemon_log_file_name, 'a'
    @daemon_log_file.sync = true
    log "-------------#{Time.now}-----------------"
    daemon
  when /stop|status/
    puts PROMPT_NO_RUNNING unless conn cmd
  else
    puts PROMPT_CMDLINE
  end
end

.transfer(log_file_name, obj) ⇒ Object 



88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
 
# File 'lib/logfile_transfer.rb', line 88

def self.transfer log_file_name, obj
  for pattern, handlers in obj.patterns
    if log_file_name =~ /#{pattern}/
      index = log_file_name.rindex('/')
      index += 1
      log_path = log_file_name[0, index]
      log_fn = log_file_name[index..(log_file_name.length-1)]

      loc_path = "#{log_path}.loc"
      loc_file_name = "#{loc_path}/#{log_fn}"

      log_file, loc_file, open_time, line_count = @files[log_file_name]

      unless log_file
        Dir.mkdir loc_path unless File.exist? loc_path

        if File.exist? loc_file_name
          loc_file = File.new(loc_file_name, 'r+')
        else
          loc_file = File.new(loc_file_name, 'w+')
        end
        loc_file.sync = true
        line_count = 0
        log_file = File.new(log_file_name, 'r')
        open_time = Time.now.to_i
        close_files open_time
      end

      while line = log_file.gets
        line_count += 1
        loc = loc_file.gets
        if loc
          next
        end

        fail = false
        fail_handlers = []

        handlers.each do |handler|
          begin
            handler.handle log_path, log_fn, line.chop, line_count, pattern
          rescue => err
            log "#{log_file_name}, #{line_count}, #{err}"
            fail_handlers << handler.class
            fail = true
          end
        end

        if fail
          loc_file.puts "#{line_count}, #{fail_handlers}"
        else
          loc_file.puts "#{line_count}"
        end

      end
      @files[log_file_name] = [log_file, loc_file, open_time, line_count]
      break
    end
  end
end