feat!: new event bus config format #272

rgraber · 2023-09-26T20:01:31Z

Description:
Change the event bus producing config from

{
    "event_type": [
        {topic: topic_a, event_key_field: field, enabled: True/False},
	{topic: topic_b, event_key_field: field, enabled: True/False},
    ]
}

to

{
     "event_type": {
         "topic_a":
	    {event_key_field: field, enabled: True/False},
	 "topic_b":
	    {event_key_field: field, enabled: True/False}
     }
}

ISSUE: #210

Dependencies: Would block openedx/edx-platform#33269

Reviewers:

tag reviewer
tag reviewer

Merge checklist:

Post merge:

Create a tag
Check new version is pushed to PyPI after tag-triggered build is
finished.
Delete working branch (if not needed anymore)

Author concerns: List any concerns about this PR - inelegant
solutions, hacks, quick-and-dirty implementations, concerns about
migrations, etc.

robrap

I did not do a full review (yet?), but just noting that the ADR looks good. Thanks.

@navinkarkera: [question] Can we get away with the backward incompatible change? That would be simplest, but I didn't know if we needed temporary code that transforms, or the use of a new name for the setting etc. for your transition? Or is that all for named releases and will it be simple to transition with instructions?

docs/decisions/0013-new-event-bus-producer-config.rst

bmtcril · 2023-09-29T16:43:08Z

This all makes sense to me. Since the original PR never landed on edx-platform I don't think there's any reason for any special shims or error handling for the transition.

navinkarkera · 2023-10-02T04:49:56Z

@robrap The original PR(s) using this config have not been merged yet, the one in edx-platform as well as openedx/xblock-skill-tagging#14. So we can go ahead with the backward incompatible change and update the PR's based on the decision and changes here.

navinkarkera

@rgraber The ADR looks good to me. 👍

docs/decisions/0013-new-event-bus-producer-config.rst

robrap

A left a bunch of mostly non-blocking suggestions. Also, any could be added as another iteration if we wish to improve and you want to land this more quickly.

CHANGELOG.rst

openedx_events/apps.py

openedx_events/event_bus/__init__.py

openedx_events/tests/test_producer_config.py

test_utils/test_settings.py

robrap · 2023-10-04T20:07:42Z

openedx_events/apps.py

                raise ProducerConfigurationError(
                    event_type=event_type,
-                    message="One of the configuration object is not a dictionary"
+                    message="One of the configuration objects is not a dictionary"


Imagine everything is working fine, and someone adds a new bad config detail. Do we want that to break all working publishing? Seems scary. Something to consider.

Good point. I'm going to punt on this since it requires a little more thought than I want to put it while trying to land this but it will be a fast follow.

Isn't it better to fail early rather than allowing a back config detail? This error will stop the application from starting.

openedx_events/event_bus/__init__.py

robrap

Thanks for the changes.

openedx_events/apps.py

openedx_events/event_bus/__init__.py

robrap

I think it is close.

openedx_events/event_bus/__init__.py

docs/decisions/0014-new-event-bus-producer-config.rst

robrap

Thank you.

navinkarkera

@rgraber This looks great. Feel free to ignore my suggestions if it doesn't make sense.

navinkarkera · 2023-10-06T13:46:36Z

openedx_events/apps.py

+    for topic in event_type_producer_configs.keys():
+        if event_type_producer_configs[topic]["enabled"] is True:


Suggested change

for topic in event_type_producer_configs.keys():

if event_type_producer_configs[topic]["enabled"] is True:

for topic, config in event_type_producer_configs.items():

if config["enabled"] is True:

navinkarkera · 2023-10-06T13:47:27Z

openedx_events/apps.py

-                topic=configuration["topic"],
-                event_key_field=configuration["event_key_field"],
+                topic=topic,
+                event_key_field=event_type_producer_configs[topic]["event_key_field"],


Suggested change

event_key_field=event_type_producer_configs[topic]["event_key_field"],

event_key_field=config["event_key_field"],

navinkarkera · 2023-10-06T13:48:50Z

openedx_events/apps.py

                raise ProducerConfigurationError(
                    event_type=event_type,
-                    message="One of the configuration object is not a dictionary"
+                    message="One of the configuration objects is not a dictionary"


Isn't it better to fail early rather than allowing a back config detail? This error will stop the application from starting.

navinkarkera · 2023-10-06T13:51:54Z

openedx_events/event_bus/__init__.py

@@ -183,3 +184,28 @@ def make_single_consumer(*, topic: str, group_id: str,
 def _reset_state(sender, **kwargs):  # pylint: disable=unused-argument
    """Reset caches when settings change during unit tests."""
    get_producer.cache_clear()
+
+
+def merge_producer_configs(producer_config_original, producer_config_overrides):


NIT: renaming these variables to original and overrides would make it easier to understand as producer_config prefix should not be needed.

Rebecca Graber added 5 commits September 29, 2023 08:13

feat!: new event bus config format

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fixup!: ADR

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fixup!: docs

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rgraber force-pushed the rsgraber/20230926-update-publish-via-config branch from f752ddc to d62ca05 Compare September 29, 2023 12:13

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feat: replace signal handler with event producer config openedx/xblock-skill-tagging#14

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Rebecca Graber and others added 11 commits October 4, 2023 08:31

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Update event bus to use new producer configuration edx/edx-arch-experiments#381

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feat!: new event bus config format #272

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		for topic in event_type_producer_configs.keys():
		if event_type_producer_configs[topic]["enabled"] is True:

	event_key_field=event_type_producer_configs[topic]["event_key_field"],
	event_key_field=config["event_key_field"],

feat!: new event bus config format #272

feat!: new event bus config format #272

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rgraber commented Sep 26, 2023 •

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