trx_toolkit: use generic logging module instead of print()

There are multiple advantages of using Python's logging module:

  - advanced message formatting (file name, line number, etc.),
  - multiple logging targets (e.g. stderr, file, socket),
  - logging levels (e.g. DEBUG, INFO, ERROR),
  - the pythonic way ;)

so, let's replace multiple print() calls by logging calls,
add use the following logging message format by default:

  [%(levelname)s] %(filename)s:%(lineno)d %(message)s

Examples:

  [INFO] ctrl_if_bts.py:57 Starting transceiver...
  [DEBUG] clck_gen.py:87 IND CLOCK 26826
  [DEBUG] ctrl_if_bts.py:71 Recv POWEROFF cmd
  [INFO] ctrl_if_bts.py:73 Stopping transceiver...
  [INFO] fake_trx.py:127 Shutting down...

Please note that there is no way to filter messages by logging
level yet. This is to be introduced soon, together with argparse.

Change-Id: I7fcafabafe8323b58990997a47afdd48b6d1f357

1 files changed, 8 insertions, 3 deletions

diff --git a/src/target/trx_toolkit/fake_trx.py b/src/target/trx_toolkit/fake_trx.py
index d99186b3..ced12381 100755
--- a/src/target/trx_toolkit/fake_trx.py
+++ b/src/target/trx_toolkit/fake_trx.py
@@ -25,6 +25,7 @@
 from copyright import print_copyright
 CR_HOLDERS = [("2017-2018", "Vadim Yanitskiy <axilirator@gmail.com>")]
 
+import logging as log
 import signal
 import getopt
 import select
@@ -53,6 +54,10 @@ class Application:
 		# Set up signal handlers
 		signal.signal(signal.SIGINT, self.sig_handler)
 
+		# Configure logging
+		log.basicConfig(level = log.DEBUG,
+			format = "[%(levelname)s] %(filename)s:%(lineno)d %(message)s")
+
 	def run(self):
 		# Init TRX CTRL interface for BTS
 		self.bts_ctrl = CTRLInterfaceBTS(self.bts_addr, self.bts_base_port + 101,
@@ -90,7 +95,7 @@ class Application:
 		self.clck_gen = CLCKGen([self.bts_clck])
 		self.bts_ctrl.clck_gen = self.clck_gen
 
-		print("[i] Init complete")
+		log.info("Init complete")
 
 		# Enter main loop
 		while True:
@@ -119,7 +124,7 @@ class Application:
 				self.bb_ctrl.handle_rx(data.decode(), addr)
 
 	def shutdown(self):
-		print("[i] Shutting down...")
+		log.info("Shutting down...")
 
 		# Stop clock generator
 		self.clck_gen.stop()
@@ -198,7 +203,7 @@ class Application:
 				sys.exit(2)
 
 	def sig_handler(self, signum, frame):
-		print("Signal %d received" % signum)
+		log.info("Signal %d received" % signum)
 		if signum is signal.SIGINT:
 			self.shutdown()
 			sys.exit(0)