[logging] Replace all print functions with logging to be able to co…

…ntrol output.

.travis.yml

@@ -17,6 +17,7 @@ install:
   - export MDST=~/.micropython/lib/
   - mkdir -p $MDST
   - ln -s `pwd`/micropython-lib/unittest/unittest.py $MDST
+  - ln -s `pwd`/micropython-lib/logging/logging.py $MDST
   - ln -s ../../uasyncio.core/uasyncio/core.py `pwd`/micropython-lib/uasyncio/uasyncio
   - ln -s `pwd`/micropython-lib/uasyncio/uasyncio $MDST/uasyncio
   - ln -s `pwd`/tinyweb $MDST/tinyweb

README.md

@@ -13,6 +13,7 @@ By itself - *tinyweb* is just simple TCP server which runs in top of **uasyncio*
 ### Requirements
 * [uasyncio](https://github.com/micropython/micropython-lib/tree/master/uasyncio) - micropython version of *async* library for big brother - python3.
 * [uasyncio-core](https://github.com/micropython/micropython-lib/tree/master/uasyncio.core)
+* [logging](https://github.com/micropython/micropython-lib/tree/master/logging)
 
 ### Quickstart
 Tinyweb comes as a compiled firmware for ESP8266 / ESP32 as well ("frozen modules"). You don't have to use it - however, it could be easiest way to try it :)

tinyweb/server.py

@@ -3,6 +3,7 @@
 MIT license
 (C) Konstantin Belyalov 2017-2018
 """
+import logging
 import uasyncio as asyncio
 import ujson as json
 import gc
@@ -12,6 +13,9 @@
 import usocket as socket
 
 
+log = logging.getLogger('TINYWEB')
+
+
 def urldecode_plus(s):
     """Decode urlencoded string (including '+' char).
 
@@ -491,16 +495,15 @@ async def _handler(self, reader, writer):
                 try:
                     await resp.error(500)
                 except Exception as e:
-                    sys.print_exception(e)
+                    sys.print_exception(e, logging._stream)
         except HTTPException as e:
             try:
                 await resp.error(e.code, e.message)
             except Exception as e:
-                sys.print_exception(e)
+                sys.print_exception(e, logging._stream)
         except Exception as e:
-            print('-' * 40)
-            print('Unhandled exception in "{}"'.format(req.path.decode()))
-            sys.print_exception(e)
+            log.error('Unhandled exception at "{}"'.format(req.path.decode()))
+            sys.print_exception(e, logging._stream)
             try:
                 await resp.error(500)
                 # Send exception info if desired
@@ -652,12 +655,13 @@ def run(self, host="127.0.0.1", port=8081, loop=None, loop_forever=True, backlog
             loop_forever - run loo.loop_forever(), otherwise caller must run it by itself.
         """
         if backlog:
-            print("WARNING: 'backlog' has been moved to __init__() and will be removed in next release")
+            log.warning("DEPRECATED: 'backlog' has been moved to __init__()")
+            self.backlog = backlog
         if loop:
             self.loop = loop
         else:
             self.loop = asyncio.get_event_loop()
-        print("* Starting Web Server at {}:{}".format(host, port))
+        log.debug("* Starting Web Server at {}:{}".format(host, port))
         self._server_coro = self._tcp_server(host, port, self.backlog)
         self.loop.create_task(self._server_coro)
         if loop_forever: