Module: LabInterface

Included in:
AstmServer
Defined in:
lib/ruby_astm/lab_interface.rb

Constant Summary collapse

ACK = 
"\x06"
ENQ = 
"\x05"
STX = 
"\x02"
LF = 
"\x10"
CR = 
"\x13"
ETX = 
"\x03"
EOT = 
"\x04"

Instance Method Summary collapse

Instance Method Details

#checksum(input) ⇒ Object 



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# File 'lib/ruby_astm/lab_interface.rb', line 44

def checksum(input)
  strString = input
  checksum = strString.sum
  b = checksum.to_s(16)
  strCksm = b[-2..-1]
  if strCksm.length < 2 
    for i in strString.length..1
       strCksm = "0" + strCksm
    end
  end
  strCksm.upcase
end

#process_text(text) ⇒ Object 



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# File 'lib/ruby_astm/lab_interface.rb', line 125

def process_text(text)
    ## should replace carriage returns with new lines, before processing any file.
    ## or text.
    text.split("\n").each do |l|
    line = Line.new({:text => l})
      process_type(line)
    end
end

#process_text_file(full_file_path) ⇒ Object

can process a file which contains ASTM output. this method is added so that you can load previously generated ASTM output into your database it also simplifies testing.



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# File 'lib/ruby_astm/lab_interface.rb', line 29

def process_text_file(full_file_path)
  #full_file_path ||= File.join root,'../test','resources','sysmex_550_sample.txt'
  IO.read(full_file_path).each_line do |line|
    line.split('\\r').each do |txt| 
      process_text(txt)
    end
  end
end

#process_type(line) ⇒ Object 



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# File 'lib/ruby_astm/lab_interface.rb', line 134

def process_type(line)
    case line.type
    when "Hl7_Header"
      hl7_header = Hl7Header.new({:line => line})
      self.headers ||= []
      self.headers << hl7_header
    when "Hl7_Observation"
      hl7_observation = Hl7Observation.new({:line => line})
      self.headers[-1].patients[-1].orders[-1].results[hl7_observation.name] = hl7_observation
    when "Hl7_Patient"
      hl7_patient = Hl7Patient.new({:line => line})
      self.headers[-1].patients << hl7_patient
    when "Hl7_Order"
      hl7_order = Hl7Order.new({:line => line, :patient_id => self.headers[-1].patients[-1].patient_id})
      self.headers[-1].patients[-1].orders << hl7_order
    when "Header"
      header = Header.new({:line => line})
      self.headers ||= []
      self.headers << header
    when "Query"
      query = Query.new({:line => line})
      self.headers[-1].queries << query
    when "Patient"
      patient = Patient.new({:line => line})
      self.headers[-1].patients << patient
    when "Order"
      order = Order.new({:line => line})
      self.headers[-1].patients[-1].orders << order
    when "Result"
      result = Result.new({:line => line})
      self.headers[-1].patients[-1].orders[-1].results[result.name] = result
    when "Terminator"
      ## it didn't terminate so there was no commit being called.
      self.headers[-1].commit
    end
end

#receive_data(data) ⇒ Object 



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# File 'lib/ruby_astm/lab_interface.rb', line 57

def receive_data(data)
    
    puts "incoming data bytes."

    concat = ""
    
    puts data.bytes.to_a.to_s

    data.bytes.to_a.each do |byte|
      x = [byte].pack('c*').force_encoding('UTF-8')
      if x == "\r"
        concat+="\n"
      elsif x == "\n"
        #puts "new line found --- "
        concat+=x
        #puts "last thing in concat."
        #puts concat[-1].to_s
      else
        concat+=x
      end
    end
    
    #puts "concat is:"
    #puts concat.to_s
    process_text(concat)      
    
    if data.bytes.to_a[0] == 4
      send_data(ENQ)
    elsif data.bytes.to_a[0] == 6
      self.headers[-1].build_responses.each do |response|
        message_checksum = checksum(response + terminator + ETX)
        #puts "Calculated checksum is: #{message_checksum}"
        final_resp = STX + response + terminator + ETX + message_checksum + "\r" 
        final_resp_arr = final_resp.bytes.to_a
        final_resp_arr << 10
        #puts final_resp_arr.to_s
        if (self.headers[-1].response_sent == false)
          send_data(final_resp_arr.pack('c*')) 
          self.headers[-1].response_sent = true
        else
          send_data(EOT)
        end
      end
    else
      ## send the header 
      puts "--------- SENT ACK -----------"
      if self.headers.blank?
        send_data(ACK)
      else
        if self.headers[-1].is_astm?
          send_data(ACK)
        elsif self.headers[-1].is_hl7?
          if self.headers.size > 0
            ## commit should return the jsonified thing, if possible.
            self.headers[-1].commit
            send_data(self.headers[-1].generate_ack_success_response)
          end
        end
      end
    end
end

#root ⇒ Object

returns the root directory of the gem.



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# File 'lib/ruby_astm/lab_interface.rb', line 22

def root
    File.dirname __dir__
end

#send_enq ⇒ Object 



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# File 'lib/ruby_astm/lab_interface.rb', line 119

def send_enq
  puts "enq as bytes is:"
  puts ENQ.unpack('c*')
  send_data(ENQ)
end

#terminator ⇒ Object 



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# File 'lib/ruby_astm/lab_interface.rb', line 39

def terminator
  "L|1|N\r"
end

#unbind ⇒ Object

1.STX + response + LF + ETX 2.response 3.STX + response + "L|1|N\r" + ETX 4.response + "L|1|N\r"



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# File 'lib/ruby_astm/lab_interface.rb', line 177

def unbind
   puts "-- someone disconnected from the echo server!"
end