Class: Fluent::SecureTcpInput

Inherits:
Input
  • Object
show all
Defined in:
lib/fluent/plugin/in_securetcp.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ SecureTcpInput

Returns a new instance of SecureTcpInput.



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# File 'lib/fluent/plugin/in_securetcp.rb', line 7

def initialize
	super
	require "openssl"
	require "socket"
	require 'concurrent/executor/cached_thread_pool'
end

Instance Method Details

#configure(conf) ⇒ Object 



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# File 'lib/fluent/plugin/in_securetcp.rb', line 24

def configure(conf)		
  	super
	if !@tag && !@ssl_certificate && !@ssl_key
		      raise ConfigError,  "'tag' and 'ssl_certificate' and 'ssl_key'  parameter is required on secure tcp input"
	end
	if @format
		@parser = Plugin.new_parser(@format)
		@parser.configure(conf)
	end
	@connections = []
end

#run ⇒ Object 



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# File 'lib/fluent/plugin/in_securetcp.rb', line 62

def run
		until @server.to_io.closed?			
     begin       
       conn = @server.accept
       next if conn.nil?
         if @max_connections
           @connections.reject! { |c| c.closed? }
           if @connections.size >= @max_connections
             conn.close # close for retry 
             sleep 1
             next
           end          
           @connections << conn
         end
         
         @thread_pool.post {
           begin
             while buf = conn.gets
               buf = buf.chomp
               to_server = buf 
               time = Time.now.getutc
               if @format
                 if @format = "json" && @add_ip 
                     sock_domain, remote_port, remote_hostname, remote_ip = conn.peeraddr
                     peer_ip = "\"peer_ip\":\"#{remote_ip}\","  
                     n = to_server.length
                     to_server = "{#{peer_ip}#{to_server.slice(1,n)}"
                  end
                 @parser.parse(to_server) { |time, record|
                   unless time && record 
                     log.warn "*pattern not match: #{msg.inspect} *"
                     next
                   end
                   
                   router.emit(tag,time,record)
                   }
               else
                 if @add_ip 
                   buff = conn.peeraddr.to_s + " - " + buff
                 end  
                 router.emit(tag,time,buf) 
               end
             end
           rescue OpenSSL::SSL::SSLError => e
             conn.close
             log.error "unexpected error", :error => e.to_s
             sleep 1
           rescue => e
               log.error "unexpected error:", :error => e.to_s
               next if e.message == "Connection reset by peer" #supress backtrace on connection reset
               log.error_backtrace
           end
         }
      rescue OpenSSL::SSL::SSLError => e
         conn.close
         log.error "unexpected error", :error => e.to_s
         sleep 1
      rescue => e
        if !@server.to_io.closed? #supress shutdown errors
           log.error "unexpected error", :error => e.to_s
           next if e.message == "Connection reset by peer" #supress backtrace on connection reset
           log.error_backtrace   
        end
      end   
    end
end

#shutdown ⇒ Object 



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# File 'lib/fluent/plugin/in_securetcp.rb', line 52

def shutdown
    @server.shutdown rescue nil
	@server.close rescue nil
  @tcp_client.shutdown rescue nil
	@tcp_client.close rescue nil      
	@thread_pool.shutdown
	@thread.join
	super
end

#start ⇒ Object 



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# File 'lib/fluent/plugin/in_securetcp.rb', line 36

def start
	super
	tcp_client          = TCPServer.new(bind,port)
	ssl_context         = OpenSSL::SSL::SSLContext.new
	ssl_context.cert    = OpenSSL::X509::Certificate.new(File.read(@ssl_certificate))
    if @ssl_key_passphrase 
	  ssl_context.key     = OpenSSL::PKey::RSA.new(File.read(@ssl_key),@ssl_key_passphrase)
    else 
      ssl_context.key     = OpenSSL::PKey::RSA.new(File.read(@ssl_key))
    end
	@server             = OpenSSL::SSL::SSLServer.new(tcp_client, ssl_context)
	@thread_pool        = Concurrent::CachedThreadPool.new(:idletime => 50) 
	@thread             = Thread.new(&method(:run))
    log.info "SSL listening on port: #{bind}:#{port} *"
end