Use logging handler close instead of custom atexit (#1134)

Author: lzchen

contrib/opencensus-ext-azure/CHANGELOG.md

@@ -6,6 +6,8 @@
 ([#1127](https://github.com/census-instrumentation/opencensus-python/pull/1127))
 - Fix failure counting statsbeat - refactor status code logic in transport
 ([#1132](https://github.com/census-instrumentation/opencensus-python/pull/1132))
+- Use logging handler close instead of custom atexit hook
+([#1134](https://github.com/census-instrumentation/opencensus-python/pull/1134))
 
 ## 1.1.4
 Released 2022-04-20

contrib/opencensus-ext-azure/opencensus/ext/azure/log_exporter/__init__.py

@@ -12,7 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import atexit
 import logging
 import os
 import random
@@ -67,7 +66,6 @@ def __init__(self, **options):
         self._queue = Queue(capacity=self.options.queue_capacity)
         self._worker = Worker(self._queue, self)
         self._worker.start()
-        atexit.register(self.close, self.options.grace_period)
         # start statsbeat on exporter instantiation
         if not os.environ.get("APPLICATIONINSIGHTS_STATSBEAT_DISABLED_ALL"):
             statsbeat.collect_statsbeat_metrics(self.options)
@@ -96,11 +94,15 @@ def _export(self, batch, event=None):  # pragma: NO COVER
             if event:
                 event.set()
 
+    # Close is automatically called as part of logging shutdown
     def close(self, timeout=None):
+        if not timeout:
+            timeout = self.options.grace_period
         if self.storage:
             self.storage.close()
         if self._worker:
             self._worker.stop(timeout)
+        super(BaseLogHandler, self).close()
 
     def createLock(self):
         self.lock = None