Centralize INSTANA_DEV and debug logging.

Author: pglombardo

instana/options.py

@@ -1,4 +1,5 @@
 import logging
+import os
 
 
 class Options(object):
@@ -8,4 +9,7 @@ class Options(object):
     log_level = logging.WARN
 
     def __init__(self, **kwds):
+        if "INSTANA_DEV" in os.environ:
+            self.log_level = logging.DEBUG
+
         self.__dict__.update(kwds)

instana/runtime.py

@@ -11,9 +11,6 @@ def hook(module):
             print("==========================================================")
             print("Instana: Running runtime hook")
             print("==========================================================")
-            level = logging.DEBUG
-        else:
-            level = logging.WARN
 
-        opts = options.Options(log_level=level)
+        opts = options.Options()
         ot.global_tracer = tracer.InstanaTracer(opts)

instana/wsgi.py

@@ -9,7 +9,7 @@ class iWSGIMiddleware(object):
 
     def __init__(self, app):
         self.app = app
-        opts = options.Options(log_level=logging.DEBUG)
+        opts = options.Options()
         ot.global_tracer = tracer.InstanaTracer(opts)
         self