diff --git a/src/consumer.py b/src/consumer.py
index 74dcfda..2fd0a34 100644
--- a/src/consumer.py
+++ b/src/consumer.py
@@ -5,6 +5,7 @@ import sys
 from functools import partial
 from pathlib import Path
 from threading import Thread, active_count
+from threading import Event
 
 import pika
 
@@ -12,7 +13,8 @@ from access import Access
 from book import Book
 
 
-def configure_file_logger(name, filename='logs/converter_log.log', filemode='w+', logging_level=logging.INFO,
+def configure_file_logger(name, filename='logs/converter_log.log', filemode='w+',
+                          logging_level=logging.INFO,
                           logging_format='%(asctime)s - %(message)s'):
     logger = logging.getLogger(name)
 
@@ -28,12 +30,12 @@ def configure_file_logger(name, filename='logs/converter_log.log', filemode='w+'
     return logger
 
 
-def convert_book(book_id, access, logger):
+def convert_book(book_id, access, logger, libra_locker):
     logger.info(f'Start processing book-{book_id}.')
     logging_format = '%(asctime)s - %(levelname)s - %(message)s'
 
     try:
-        book = Book(book_id, access, main_logger=logger)
+        book = Book(book_id, access, main_logger=logger, libra_locker=libra_locker)
         book.conversion(logging_format=logging_format)
     except Exception as exc:
         raise exc
@@ -42,7 +44,7 @@ def convert_book(book_id, access, logger):
     # print('Book has been proceeded.')
 
 
-def callback(ch, method, properties, body, logger):
+def callback(ch, method, properties, body, logger, libra_locker):
     print(f'Message: {body}.')
     logger.info(f'Message: {body}.')
     try:
@@ -52,7 +54,8 @@ def callback(ch, method, properties, body, logger):
         params = {
             'book_id': data['id'],
             'access': Access(url=data['apiURL']),
-            'logger': logger
+            'logger': logger,
+            'libra_locker': libra_locker
         }
 
         thread = Thread(target=convert_book, kwargs=params)
@@ -71,19 +74,18 @@ def callback(ch, method, properties, body, logger):
         # thread.join()
         # print('Waiting for the message...')
 
-def local_run(filename):
+
+def local_convert_book(filename, locker):
     logger = configure_file_logger('consumer', logging_format='%(asctime)s - %(levelname)s - %(message)s')
-
     logger.info(f'Start processing book-{filename}.')
-    logging_format = '%(asctime)s - %(levelname)s - %(message)s'
 
-
-    folder_path = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
-    file_path = Path(os.path.join(folder_path, f'docx/{filename}.docx'))
+    folder_path = os.path.dirname(os.path.dirname(os.path.abspath("__file__")))
     output_path = Path(os.path.join(folder_path, f'json/{filename}.json'))
-
     try:
-        book = Book(file_path=file_path, output_path=output_path, main_logger=logger)
+        book = Book(book_id=filename,
+                    output_path=output_path,
+                    main_logger=logger,
+                    libra_locker=locker)
         book.test_conversion()
 
     except Exception as exc:
@@ -92,8 +94,20 @@ def local_run(filename):
     logger.info(f'Book-{filename} has been proceeded.')
 
 
-if __name__ == '__main__':
+def local_run(books):
+    locker = Event()
+    locker.set()
 
+    threads = []
+    for book_name in books:
+        logging.info("Main    : create and start thread %d.", book_name)
+        x = Thread(target=local_convert_book, args=(book_name, locker))
+        threads.append(x)
+
+    [x.start() for x in threads]
+
+
+def server_run():
     folder_path = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
     # config_path = Path(os.path.join(folder_path, "config/config.json"))
     config_path = Path(os.path.join(folder_path, "config/queue_config.json"))
@@ -116,13 +130,18 @@ if __name__ == '__main__':
         logger.log(logging.ERROR, f'Queue {conf_param["queue"]} is not declared.')
         raise exc
 
+    locker = Event()
+    locker.set()
     channel.basic_consume(queue=conf_param['queue'],
                           auto_ack=True,
-                          on_message_callback=partial(callback, logger=logger))
+                          on_message_callback=partial(callback, logger=logger, libra_locker=locker))
     logger.info('Connection has been established.')
     print('Waiting for messages...')
     logger.info('Waiting for messages...')
 
     channel.start_consuming()
 
-    # local_run('quote')
+
+if __name__ == '__main__':
+    server_run()
+