refactor namespace package - componentize ocagent trace exporter (census-instrumentation#546)

* componentize ocagent trace exporter

* remove unused file

* sort import order

* address review comments

Author: reyang

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

@@ -19,13 +19,13 @@
 from django.test.utils import teardown_test_environment
 
 from opencensus.common.transports import sync
+from opencensus.ext.ocagent import trace_exporter
 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.propagation import google_cloud_format
 from opencensus.trace.samplers import always_on
 from opencensus.trace.samplers import probability

contrib/opencensus-ext-flask/tests/test_flask_middleware.py

@@ -22,6 +22,7 @@
 import mock
 
 from opencensus.ext.flask import flask_middleware
+from opencensus.ext.ocagent import trace_exporter
 from opencensus.trace import execution_context
 from opencensus.trace import span as span_module
 from opencensus.trace import span_data
@@ -32,7 +33,6 @@
 from opencensus.trace.exporters import print_exporter
 from opencensus.trace.exporters import stackdriver_exporter
 from opencensus.trace.exporters import zipkin_exporter
-from opencensus.trace.exporters.ocagent import trace_exporter
 from opencensus.trace.propagation import google_cloud_format
 from opencensus.trace.samplers import always_off, always_on, ProbabilitySampler
 from opencensus.trace.span_context import SpanContext

contrib/opencensus-ext-ocagent/CHANGELOG.md

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

contrib/opencensus-ext-ocagent/README.rst

@@ -0,0 +1,16 @@
+OpenCensus OC-Agent Trace Exporter
+============================================================================
+
+Installation
+------------
+
+::
+
+    pip install opencensus-ext-ocagent
+
+Usage
+-----
+
+.. code:: python
+
+    # TBD

contrib/opencensus-ext-ocagent/opencensus/__init__.py

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

contrib/opencensus-ext-ocagent/opencensus/ext/__init__.py

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

contrib/opencensus-ext-ocagent/opencensus/ext/ocagent/__init__.py

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

opencensus/trace/exporters/ocagent/trace_exporter.py renamed to contrib/opencensus-ext-ocagent/opencensus/ext/ocagent/trace_exporter/__init__.py

@@ -21,14 +21,14 @@
 
 from opencensus.common.transports import sync
 from opencensus.common.version import __version__
-from opencensus.trace.exporters import base
-from opencensus.trace.exporters.gen.opencensus.agent.common.v1 \
+from opencensus.ext.ocagent.trace_exporter import utils
+from opencensus.ext.ocagent.trace_exporter.gen.opencensus.agent.common.v1 \
     import common_pb2
-from opencensus.trace.exporters.gen.opencensus.agent.trace.v1 \
+from opencensus.ext.ocagent.trace_exporter.gen.opencensus.agent.trace.v1 \
     import trace_service_pb2
-from opencensus.trace.exporters.gen.opencensus.agent.trace.v1 \
+from opencensus.ext.ocagent.trace_exporter.gen.opencensus.agent.trace.v1 \
     import trace_service_pb2_grpc
-from opencensus.trace.exporters.ocagent import utils
+from opencensus.trace.exporters import base
 
 # Default agent endpoint
 DEFAULT_ENDPOINT = 'localhost:55678'