Add runtime only hook & instrumentation

Author: pglombardo

instana/runtime.py

@@ -0,0 +1,14 @@
+import opentracing as ot
+from instana import tracer, options
+import logging
+import os
+
+
+def hook(module):
+    """ Hook method to install the Instana middleware into Flask """
+    if "INSTANA_DEV" in os.environ:
+        level = logging.DEBUG
+    else:
+        level = logging.WARN
+    opts = options.Options(log_level=level)
+    ot.global_tracer = tracer.InstanaTracer(opts)

setup.py

@@ -18,7 +18,8 @@
                         'basictracer>=2.2.0',
                         'psutil>=5.1.3'],
       entry_points={'django': ['django.core.handlers.base = instana.django:hook'],
-                    'flask': ['flask.cli = instana.flaskana:hook']},
+                    'flask': ['flask.cli = instana.flaskana:hook'],
+                    'runtime': ['string = instana.runtime:hook']},
       test_suite='nose.collector',
       keywords=['performance', 'opentracing', 'metrics', 'monitoring'],
       classifiers=[