Componentize the remaining integration extensions (2nd part) (census-instrumentation#540)

* componentize the remaining exts

* add ext packages to test script nox.py

* revert rename of test_ext_utils.py

* fix typo

* update changelog

* add wrapt dependency to opencensus-ext-requests

Author: reyang

CHANGELOG.md

@@ -9,6 +9,9 @@
 - Replace stackdriver `gke_container` resources, see the [GKE migration
   notes](https://cloud.google.com/monitoring/kubernetes-engine/migration#incompatible)
   for details
+- Componentize the package distribution. All [contrib
+  packages](https://github.com/census-instrumentation/opencensus-python/tree/master/contrib/)
+  are now decoupled from the core library, and can be released separately.
 
 ## 0.2.0
 Released 2019-01-18

contrib/opencensus-ext-django/opencensus/ext/django/middleware.py

@@ -16,11 +16,11 @@
 import logging
 
 from opencensus.ext.django.config import (settings, convert_to_import)
-from opencensus.trace.ext import utils
 from opencensus.trace import attributes_helper
 from opencensus.trace import execution_context
 from opencensus.trace import span as span_module
 from opencensus.trace import tracer as tracer_module
+from opencensus.trace import utils
 from opencensus.trace.samplers import probability
 
 try:

contrib/opencensus-ext-django/tests/test_django_middleware.py

@@ -21,11 +21,11 @@
 from opencensus.common.transports import sync
 from opencensus.trace import execution_context
 from opencensus.trace import span as span_module
+from opencensus.trace import utils
 from opencensus.trace.exporters import print_exporter
 from opencensus.trace.exporters import zipkin_exporter
 from opencensus.trace.exporters import jaeger_exporter
 from opencensus.trace.exporters.ocagent import trace_exporter
-from opencensus.trace.ext import utils
 from opencensus.trace.propagation import google_cloud_format
 from opencensus.trace.samplers import always_on
 from opencensus.trace.samplers import probability

contrib/opencensus-ext-flask/opencensus/ext/flask/flask_middleware.py

@@ -26,8 +26,8 @@
 from opencensus.trace import stack_trace
 from opencensus.trace import status
 from opencensus.trace import tracer as tracer_module
+from opencensus.trace import utils
 from opencensus.trace.exporters import print_exporter
-from opencensus.trace.ext import utils
 from opencensus.trace.propagation import google_cloud_format
 from opencensus.trace.samplers import always_on, probability
 

contrib/opencensus-ext-google-cloud-clientlibs/CHANGELOG.md

@@ -0,0 +1,5 @@
+# Changelog
+
+## Unreleased
+
+- Initial version.

contrib/opencensus-ext-google-cloud-clientlibs/README.rst

@@ -0,0 +1,16 @@
+OpenCensus Google Cloud Client Libraries Integration
+============================================================================
+
+Installation
+------------
+
+::
+
+    pip install opencensus-ext-google-cloud-clientlibs
+
+Usage
+-----
+
+.. code:: python
+
+    # TBD

contrib/opencensus-ext-google-cloud-clientlibs/opencensus/__init__.py

@@ -0,0 +1 @@
+__path__ = __import__('pkgutil').extend_path(__path__, __name__)

contrib/opencensus-ext-google-cloud-clientlibs/opencensus/ext/__init__.py

@@ -0,0 +1 @@
+__path__ = __import__('pkgutil').extend_path(__path__, __name__)

opencensus/trace/ext/google_cloud_clientlibs/__init__.py renamed to contrib/opencensus-ext-google-cloud-clientlibs/opencensus/ext/google_cloud_clientlibs/__init__.py

@@ -12,6 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from opencensus.trace.ext.google_cloud_clientlibs import trace
+from opencensus.ext.google_cloud_clientlibs import trace
 
 __all__ = ['trace']

opencensus/trace/ext/google_cloud_clientlibs/trace.py renamed to contrib/opencensus-ext-google-cloud-clientlibs/opencensus/ext/google_cloud_clientlibs/trace.py

@@ -20,10 +20,10 @@
 from google.api_core import grpc_helpers
 
 from opencensus.trace import execution_context
-from opencensus.trace.ext.grpc.client_interceptor import (
+from opencensus.ext.grpc.client_interceptor import (
     OpenCensusClientInterceptor)
 
-from opencensus.trace.ext.requests.trace import (
+from opencensus.ext.requests.trace import (
     trace_integration as trace_requests)
 
 log = logging.getLogger(__name__)