prepare 8.1.6 release (#220)

## [8.1.6] - 2023-09-06
### Changed:
- Recoverable errors are logged as a warning not an error. (Thanks,
[fritzdj](#219)!)

---------

Co-authored-by: Ben Woskow <48036130+bwoskow-ld@users.noreply.github.com>
Co-authored-by: Eli Bishop <eli@launchdarkly.com>
Co-authored-by: LaunchDarklyCI <dev@launchdarkly.com>
Co-authored-by: LaunchDarklyCI <LaunchDarklyCI@users.noreply.github.com>
Co-authored-by: hroederld <hroeder@launchdarkly.com>
Co-authored-by: Robert J. Neal <rneal@launchdarkly.com>
Co-authored-by: Robert J. Neal <robertjneal@users.noreply.github.com>
Co-authored-by: Ember Stevens <ember.stevens@launchdarkly.com>
Co-authored-by: ember-stevens <79482775+ember-stevens@users.noreply.github.com>
Co-authored-by: Matthew M. Keeler <keelerm84@gmail.com>
Co-authored-by: charukiewicz <charukiewicz@protonmail.com>
Co-authored-by: LaunchDarklyReleaseBot <launchdarklyreleasebot@launchdarkly.com>
Co-authored-by: Christian Charukiewicz <christian@foxhound.systems>
Co-authored-by: Matthew M. Keeler <mkeeler@launchdarkly.com>
Co-authored-by: Ben Woskow <bwoskow@launchdarkly.com>
Co-authored-by: Gavin Whelan <gwhelan@launchdarkly.com>
Co-authored-by: Elliot <35050275+Apache-HB@users.noreply.github.com>
Co-authored-by: Gabor Angeli <gabor@squareup.com>
Co-authored-by: Elliot <apachehaisley@gmail.com>
Co-authored-by: Louis Chan <lchan@launchdarkly.com>
Co-authored-by: prpnmac <95777763+prpnmac@users.noreply.github.com>
Co-authored-by: Louis Chan <91093020+louis-launchdarkly@users.noreply.github.com>
Co-authored-by: Daniel Fritz <dfritz@indigoag.com>

ldclient/impl/datasource/polling.py

@@ -38,8 +38,11 @@ def _poll(self):
                 log.info("PollingUpdateProcessor initialized ok")
                 self._ready.set()
         except UnsuccessfulResponseException as e:
-            log.error(http_error_message(e.status, "polling request"))
-            if not is_http_error_recoverable(e.status):
+            http_error_message_result = http_error_message(e.status, "polling request")
+            if is_http_error_recoverable(e.status):
+                log.warning(http_error_message_result)
+            else:
+                log.error(http_error_message_result)
                 self._ready.set() # if client is initializing, make it stop waiting; has no effect if already inited
                 self.stop()
         except Exception as e:

ldclient/impl/datasource/streaming.py

@@ -83,10 +83,14 @@ def run(self):
                         log.info("StreamingUpdateProcessor initialized ok.")
                         self._ready.set()
             except UnsuccessfulResponseException as e:
-                log.error(http_error_message(e.status, "stream connection"))
                 self._record_stream_init(True)
                 self._es_started = None
-                if not is_http_error_recoverable(e.status):
+
+                http_error_message_result = http_error_message(e.status, "stream connection")
+                if is_http_error_recoverable(e.status):
+                    log.warning(http_error_message_result)
+                else:
+                    log.error(http_error_message_result)
                     self._ready.set()  # if client is initializing, make it stop waiting; has no effect if already inited
                     self.stop()
                     break