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Class: Puma::LogWriter

Relationships & Source Files
Namespace Children
Classes:
DefaultFormatter, PidFormatter
Inherits: Object
Defined in: lib/puma/log_writer.rb

Overview

Handles logging concerns for both standard messages (#stdout) and errors (#stderr).

Constant Summary

Class Method Summary

Instance Attribute Summary

Instance Method Summary

Constructor Details

.new(stdout, stderr) ⇒ LogWriter

Create a LogWriter that prints to #stdout and #stderr.

[ GitHub ] 

  


# File 'lib/puma/log_writer.rb', line 34



def initialize(stdout, stderr)
  @formatter = DefaultFormatter.new
  @custom_logger = nil
  @stdout = stdout
  @stderr = stderr

  @debug = ENV.key?('PUMA_DEBUG')
  @error_logger = ErrorLogger.new(@stderr)
end


  







Class Method Details



  

    .null  
  

  [ GitHub ]


  

  


# File 'lib/puma/log_writer.rb', line 56



def self.null
  n = NullIO.new
  LogWriter.new(n, n)
end


  








  

    .stdio  
  

  [ GitHub ]


  

  


# File 'lib/puma/log_writer.rb', line 52



def self.stdio
  LogWriter.new($stdout, $stderr)
end


  








  

    .strings  
  



  

    

Returns an LogWriter object which writes its status to two StringIO objects.


  



  [ GitHub ]


  

  


# File 'lib/puma/log_writer.rb', line 48



def self.strings
  LogWriter.new(StringIO.new, StringIO.new)
end


  







Instance Attribute Details



  

    #custom_logger   (rw)
  

  [ GitHub ]


  

  


# File 'lib/puma/log_writer.rb', line 31



attr_accessor :formatter, :custom_logger


  








  

    #debug?  ⇒ Boolean  (readonly)
  

  [ GitHub ]


  

  


# File 'lib/puma/log_writer.rb', line 89



def debug?
  @debug
end


  








  

    #formatter   (rw)
  

  [ GitHub ]


  

  


# File 'lib/puma/log_writer.rb', line 31



attr_accessor :formatter, :custom_logger


  








  

    #stderr   (readonly)
  

  [ GitHub ]


  

  


# File 'lib/puma/log_writer.rb', line 28



attr_reader :stdout,
            :stderr


  








  

    #stdout   (readonly)
  

  [ GitHub ]


  

  


# File 'lib/puma/log_writer.rb', line 28



attr_reader :stdout,
            :stderr


  







Instance Method Details



  

    #connection_error(error, req, text = "HTTP connection error")  
  



  

    

An HTTP connection error has occurred. #error a connection exception, req the request, and text additional info


  





  
Version:


    
  
  • 
    
    

    5.0.0
    

    
  
    • 





  [ GitHub ]


  

  


# File 'lib/puma/log_writer.rb', line 111



def connection_error(error, req, text="HTTP connection error")
  @error_logger.info(error: error, req: req, text: text)
end


  








  

    #debug(str)   (readonly)
  

  [ GitHub ]


  

  


# File 'lib/puma/log_writer.rb', line 93



def debug(str)
  log("% #{str}") if @debug
end


  








  

    #debug_error(error, req = nil, text = "")  
  



  

    

Log occurred error debug dump. #error an exception object, req the request, and text additional info


  





  
Version:


    
  
  • 
    
    

    5.0.0
    

    
  
    • 





  [ GitHub ]


  

  


# File 'lib/puma/log_writer.rb', line 143



def debug_error(error, req=nil, text="")
  @error_logger.debug(error: error, req: req, text: text)
end


  








  

    #error(str)  
  



  

    

Write str to @stderr


  



  [ GitHub ]


  

  


# File 'lib/puma/log_writer.rb', line 98



def error(str)
  @error_logger.info(text: @formatter.call("ERROR: #{str}"))
  exit 1
end


  








  

    #format(str)  
  

  [ GitHub ]


  

  


# File 'lib/puma/log_writer.rb', line 103



def format(str)
  formatter.call(str)
end


  








  

    #internal_write(str)   (private)
  

  [ GitHub ]


  

  


# File 'lib/puma/log_writer.rb', line 74



def internal_write(str)
  LOG_QUEUE << str
  while (w_str = LOG_QUEUE.pop(true)) do
    begin
      @stdout.is_a?(IO) and @stdout.wait_writable(1)
      @stdout.write w_str
      @stdout.flush unless @stdout.sync
    rescue Errno::EPIPE, Errno::EBADF, IOError, Errno::EINVAL
    # 'Invalid argument' (Errno::EINVAL) may be raised by flush
    end
  end
rescue ThreadError
end


  








  

    #log(str)  
  



  

    

Write str to @stdout


  



  [ GitHub ]


  

  


# File 'lib/puma/log_writer.rb', line 62



def log(str)
  if @custom_logger&.respond_to?(:write)
    @custom_logger.write(format(str))
  else
    internal_write "#{@formatter.call str}\n"
  end
end


  








  

    #parse_error(error, req)  
  



  

    

An HTTP parse error has occurred. #error a parsing exception, and req the request.


  



  [ GitHub ]


  

  


# File 'lib/puma/log_writer.rb', line 118



def parse_error(error, req)
  @error_logger.info(error: error, req: req, text: 'HTTP parse error, malformed request')
end


  








  

    #ssl_error(error, ssl_socket)  
  



  

    

An SSL error has occurred.


  





  
Parameters:





  [ GitHub ]


  

  


# File 'lib/puma/log_writer.rb', line 125



def ssl_error(error, ssl_socket)
  peeraddr = ssl_socket.peeraddr.last rescue "<unknown>"
  peercert = ssl_socket.peercert
  subject = peercert&.subject
  @error_logger.info(error: error, text: "SSL error, peer: #{peeraddr}, peer cert: #{subject}")
end


  








  

    #unknown_error(error, req = nil, text = "Unknown error")  
  



  

    

An unknown error has occurred. #error an exception object, req the request, and text additional info


  



  [ GitHub ]


  

  


# File 'lib/puma/log_writer.rb', line 135



def unknown_error(error, req=nil, text="Unknown error")
  @error_logger.info(error: error, req: req, text: text)
end


  








  

    #write(str)  
  

  [ GitHub ]


  

  


# File 'lib/puma/log_writer.rb', line 70



def write(str)
  internal_write @formatter.call(str)
end