fix: set x-goog-request-params for streaming pull request (#884)

* samples: schema evolution

* Add command-line commands

* Fix tag for rollback

* Make formatting fixes

* Formatting fixes

* Fix exceptions

* fix: Set x-goog-request-params for streaming pull request

google/cloud/pubsub_v1/subscriber/_protocol/streaming_pull_manager.py

@@ -279,6 +279,9 @@ def __init__(
         self._await_callbacks_on_shutdown = await_callbacks_on_shutdown
         self._ack_histogram = histogram.Histogram()
         self._last_histogram_size = 0
+        self._stream_metadata = [
+            ["x-goog-request-params", "subscription=" + subscription]
+        ]
 
         # If max_duration_per_lease_extension is the default
         # we set the stream_ack_deadline to the default of 60
@@ -845,6 +848,7 @@ def open(
             initial_request=get_initial_request,
             should_recover=self._should_recover,
             should_terminate=self._should_terminate,
+            metadata=self._stream_metadata,
             throttle_reopen=True,
         )
         self._rpc.add_done_callback(self._on_rpc_done)

tests/unit/pubsub_v1/subscriber/test_streaming_pull_manager.py

@@ -91,6 +91,7 @@ def test__wrap_callback_errors_error():
 
 
 def test_constructor_and_default_state():
+    mock.sentinel.subscription = str()
     manager = streaming_pull_manager.StreamingPullManager(
         mock.sentinel.client, mock.sentinel.subscription
     )
@@ -113,6 +114,7 @@ def test_constructor_and_default_state():
 
 
 def test_constructor_with_default_options():
+    mock.sentinel.subscription = str()
     flow_control_ = types.FlowControl()
     manager = streaming_pull_manager.StreamingPullManager(
         mock.sentinel.client,
@@ -128,6 +130,7 @@ def test_constructor_with_default_options():
 
 
 def test_constructor_with_min_and_max_duration_per_lease_extension_():
+    mock.sentinel.subscription = str()
     flow_control_ = types.FlowControl(
         min_duration_per_lease_extension=15, max_duration_per_lease_extension=20
     )
@@ -142,6 +145,7 @@ def test_constructor_with_min_and_max_duration_per_lease_extension_():
 
 
 def test_constructor_with_min_duration_per_lease_extension_too_low():
+    mock.sentinel.subscription = str()
     flow_control_ = types.FlowControl(
         min_duration_per_lease_extension=9, max_duration_per_lease_extension=9
     )
@@ -156,6 +160,7 @@ def test_constructor_with_min_duration_per_lease_extension_too_low():
 
 
 def test_constructor_with_max_duration_per_lease_extension_too_high():
+    mock.sentinel.subscription = str()
     flow_control_ = types.FlowControl(
         max_duration_per_lease_extension=601, min_duration_per_lease_extension=601
     )
@@ -1181,6 +1186,7 @@ def test_open(heartbeater, dispatcher, leaser, background_consumer, resumable_bi
         initial_request=mock.ANY,
         should_recover=manager._should_recover,
         should_terminate=manager._should_terminate,
+        metadata=manager._stream_metadata,
         throttle_reopen=True,
     )
     initial_request_arg = resumable_bidi_rpc.call_args.kwargs["initial_request"]