Rename basilisp.logging to basilisp.logging_config (#246)

* Rename basilisp.logging to basilisp.logging_config

* Move logging to main

* Add service name

* Pass Travis CI environment variables

Author: chrisrink10

Makefile

@@ -13,8 +13,7 @@ release:
 
 .PHONY: repl
 repl:
-	@BASILISP_USE_DEV_LOGGER=true
-	@pipenv run basilisp repl
+	@BASILISP_USE_DEV_LOGGER=true pipenv run basilisp repl
 
 
 .PHONY: test

src/basilisp/cli.py

@@ -14,8 +14,6 @@
 import basilisp.main as basilisp
 import basilisp.reader as reader
 
-importlib.import_module('basilisp.logging')
-
 
 @click.group()
 def cli():

src/basilisp/logging.py

@@ -1,9 +1,35 @@
 import importlib
+import logging
+import os
 
 import basilisp.importer as importer
 import basilisp.lang.runtime as runtime
 
-importlib.import_module('basilisp.logging')
+
+def _get_default_level() -> str:
+    """Get the default logging level for Basilisp."""
+    return os.getenv('BASILISP_LOGGING_LEVEL', 'WARNING')
+
+
+def _get_default_handler(level: str, formatter: logging.Formatter) -> logging.Handler:
+    """Get the default logging handler for Basilisp."""
+    handler: logging.Handler = logging.NullHandler()
+    if os.getenv('BASILISP_USE_DEV_LOGGER') == 'true':
+        handler = logging.StreamHandler()
+
+    handler.setFormatter(formatter)
+    handler.setLevel(level)
+    return handler
+
+
+_DEFAULT_FORMAT = '%(asctime)s %(levelname)s [%(name)s.%(funcName)s:%(lineno)d] - %(message)s'
+_DEFAULT_FORMATTER = logging.Formatter(_DEFAULT_FORMAT)
+_DEFAULT_LEVEL = _get_default_level()
+_DEFAULT_HANDLER = _get_default_handler(_DEFAULT_LEVEL, _DEFAULT_FORMATTER)
+
+logger = logging.getLogger('basilisp')
+logger.setLevel(_DEFAULT_LEVEL)
+logger.addHandler(_DEFAULT_HANDLER)
 
 
 def init():

src/basilisp/main.py

@@ -6,6 +6,7 @@ python =
     3.6: py36, coverage, lint
 
 [testenv]
+passenv = TRAVIS TRAVIS_*
 deps =
     six==1.10.0
 commands =
@@ -16,7 +17,7 @@ deps =
     coveralls
     coverage
     six==1.10.0
-setenv   =
+setenv =
     COVERALLS_REPO_TOKEN = {env:COVERALLS_REPO_TOKEN}
 usedevelop = true
 commands =