Merge pull request #181 from DataDog/talwai/pylons

pylons: add autopatching

Author: talwai

ddtrace/contrib/pylons/__init__.py

@@ -16,6 +16,7 @@
 """
 
 from .middleware import PylonsTraceMiddleware
+from .patch import patch
 
 
-__all__ = ['PylonsTraceMiddleware']
+__all__ = ['PylonsTraceMiddleware', 'patch']

ddtrace/contrib/pylons/patch.py

@@ -0,0 +1,26 @@
+import os
+
+from .middleware import PylonsTraceMiddleware
+
+from ddtrace import tracer, Pin
+
+import wrapt
+
+import pylons.wsgiapp
+
+def patch():
+    """Patch the instrumented Flask object
+    """
+    if getattr(pylons.wsgiapp, '_datadog_patch', False):
+        return
+
+    setattr(pylons.wsgiapp, '_datadog_patch', True)
+
+    wrapt.wrap_function_wrapper('pylons.wsgiapp', 'PylonsApp.__init__', traced_init)
+
+def traced_init(wrapped, instance, args, kwargs):
+    wrapped(*args, **kwargs)
+
+    service = os.environ.get("DATADOG_SERVICE_NAME") or "pylons"
+    Pin(service=service, tracer=tracer).onto(instance)
+    PylonsTraceMiddleware(instance, tracer, service=service)

ddtrace/monkey.py

@@ -31,11 +31,11 @@
     'aiohttp': True,  # requires asyncio (Python 3.4+)
 
     # Ignore some web framework integrations that might be configured explicitly in code
-    'django': False,
-    'flask': False,
-    'pylons': False,
-    'falcon': False,
-    'pyramid': False,
+    "django": False,
+    "flask": False,
+    "falcon": False,
+    "pylons": False,
+    "pyramid": False,
 }
 
 _LOCK = threading.Lock()

tox.ini

@@ -16,6 +16,7 @@ envlist =
     {py27,py34,py35,py36}-ddtracerun
     {py27,py34,py35,py36}-contrib
     {py34,py35,py36}-asyncio
+    {py27}-pylons
     {py34,py35,py36}-aiohttp{12,13}-aiohttp_jinja{012,013}
     {py27,py34,py35,py36}-bottle{12}-webtest
     {py27,py34,py35,py36}-bottle-autopatch{12}-webtest
@@ -131,6 +132,7 @@ deps =
     memcached: python-memcached
     mongoengine011: mongoengine>=0.11,<0.12
     mysqlconnector21: mysql-connector>=2.1,<2.2
+    pylons: pylons
     pylibmc: pylibmc
     pylibmc140: pylibmc>=1.4.0,<1.5.0
     pylibmc150: pylibmc>=1.5.0,<1.6.0
@@ -173,10 +175,11 @@ commands =
 # integration tests
     integration: nosetests {posargs} tests/test_integration.py
 # run all tests for the release jobs except the ones with a different test runner
-    contrib: nosetests {posargs} --exclude=".*(django|asyncio|aiohttp|gevent|falcon|flask_autopatch|bottle).*" tests/contrib
+    contrib: nosetests {posargs} --exclude=".*(django|asyncio|aiohttp|gevent|falcon|flask_autopatch|bottle|pylons).*" tests/contrib
     asyncio: nosetests {posargs} tests/contrib/asyncio
     aiohttp{12,13}-aiohttp_jinja{012,013}: nosetests {posargs} tests/contrib/aiohttp
 # run subsets of the tests for particular library versions
+    {py27}-pylons: nosetests {posargs} tests/contrib/pylons
     {py27,py34}-boto: nosetests {posargs} tests/contrib/boto
     {py27,py34}-botocore: nosetests {posargs} tests/contrib/botocore
     bottle{12}: nosetests {posargs} tests/contrib/bottle/test.py