Prepare for 0.4.0 release (#604)

Release opencensus-0.4.0 and multiple new versions of ext packages. This
release includes breaking changes related to the context API and stats/metrics
exporters. It also adds a dependency on the new opencensus-context package.

Author: c24t

.coveragerc

@@ -2,6 +2,7 @@
 branch = True
 omit =
     # Test cases
+    context/*/tests/*
     contrib/*/tests/*
     # Auto generated files
     contrib/opencensus-ext-jaeger/opencensus/ext/jaeger/trace_exporter/gen/*
@@ -19,6 +20,8 @@ exclude_lines =
     # Ignore debug-only repr
     def __repr__
 omit =
+    # Test cases
+    context/*/tests/*
     # Side-effect introduced by namespace packages
     contrib/*/opencensus/__init__.py
     contrib/*/opencensus/ext/__init__.py

CHANGELOG.md

@@ -2,6 +2,13 @@
 
 ## Unreleased
 
+## 0.4.0
+Released 2019-04-08
+
+- Multiple bugfixes
+- Use separate context package instead of threadlocals for execution context
+  ([#573](https://github.com/census-instrumentation/opencensus-python/pull/573))
+
 ## 0.3.0
 Released 2019-03-11
 

context/opencensus-context/CHANGELOG.md

@@ -1,5 +1,6 @@
 # Changelog
 
-## Unreleased
+## 0.1.0
+Released 2019-04-08
 
-- Add this changelog.
+- Initial version

context/opencensus-context/opencensus/common/runtime_context/__init__.py

@@ -12,7 +12,12 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import sys
+
+try:
+    import contextvars
+except ImportError:
+    contextvars = None
+
 import threading
 
 __all__ = ['RuntimeContext']
@@ -132,7 +137,6 @@ class _AsyncRuntimeContext(_RuntimeContext):
 
     class Slot(object):
         def __init__(self, name, default):
-            import contextvars
             self.name = name
             self.contextvar = contextvars.ContextVar(name)
             self.default = default if callable(default) else (lambda: default)
@@ -169,6 +173,5 @@ def register_slot(cls, name, default=None):
 
 
 RuntimeContext = _ThreadLocalRuntimeContext()
-
-if sys.version_info >= (3, 7):
+if contextvars:
     RuntimeContext = _AsyncRuntimeContext()

context/opencensus-context/setup.py

@@ -38,11 +38,14 @@
     description='OpenCensus Runtime Context',
     include_package_data=True,
     long_description=open('README.rst').read(),
-    install_requires=[],
+    install_requires=[
+        # contextvars backport for Python 3.6
+        'contextvars ; python_version >= "3.6" and python_version < "3.7"',
+    ],
     extras_require={},
     license='Apache-2.0',
     packages=find_packages(exclude=('examples', 'tests',)),
     namespace_packages=[],
-    url='https://github.com/census-instrumentation/opencensus-python/tree/master/contrib/opencensus-context',  # noqa: E501
+    url='https://github.com/census-instrumentation/opencensus-python/tree/master/context/opencensus-context',  # noqa: E501
     zip_safe=False,
 )

context/opencensus-context/tests/test_runtime_context.py

@@ -33,3 +33,39 @@ def test_register_duplicate(self):
             RuntimeContext.register_slot('dup'),
             RuntimeContext.register_slot('dup'),
         ])
+
+    def test_get_non_existing(self):
+        self.assertRaises(AttributeError, lambda: RuntimeContext.non_existing)
+
+    def test_set_non_existing(self):
+        def set_non_existing():
+            RuntimeContext.non_existing = 1
+
+        self.assertRaises(AttributeError, set_non_existing)
+
+    def test_clear(self):
+        RuntimeContext.register_slot('baz')
+        RuntimeContext.baz = 123
+        self.assertEqual(RuntimeContext.baz, 123)
+        RuntimeContext.clear()
+        self.assertEqual(RuntimeContext.baz, None)
+
+    def test_with_current_context(self):
+        from threading import Thread
+
+        RuntimeContext.register_slot('operation_id')
+
+        def work(name):
+            self.assertEqual(RuntimeContext.operation_id, 'foo')
+            RuntimeContext.operation_id = name
+            self.assertEqual(RuntimeContext.operation_id, name)
+
+        RuntimeContext.operation_id = 'foo'
+        thread = Thread(
+            target=RuntimeContext.with_current_context(work),
+            args=('bar'),
+        )
+        thread.start()
+        thread.join()
+
+        self.assertEqual(RuntimeContext.operation_id, 'foo')

context/opencensus-context/version.py

@@ -12,4 +12,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = '0.1.dev0'
+__version__ = '0.1.0'

contrib/opencensus-correlation/version.py

@@ -12,4 +12,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = '0.2.dev0'
+__version__ = '0.1.0'

contrib/opencensus-ext-dbapi/CHANGELOG.md

@@ -2,6 +2,11 @@
 
 ## Unreleased
 
+## 0.1.1
+Released 2019-04-08
+
+- Cosmetic changes
+
 ## 0.1.0
 Released 2019-03-19
 

contrib/opencensus-ext-dbapi/setup.py

@@ -39,7 +39,7 @@
     include_package_data=True,
     long_description=open('README.rst').read(),
     install_requires=[
-        'opencensus >= 0.4.dev0, < 1.0.0',
+        'opencensus >= 0.3.0, < 1.0.0',
     ],
     extras_require={},
     license='Apache-2.0',