Our webhook-errors.log file is riddled with exceptions that are
logged when a webhook is incorrectly configured to send data in
a non-JSON format. To avoid this, api_key_only_webhook_view
now supports an additional argument, notify_bot_owner_on_invalid_json.
This argument, when True, will send a PM notification to the bot's
owner notifying them of the configuration issue.
Recently, one of our users reported that a JIRA webhook was not
able to send messages to a stream with a space character in its
name. Turns out that JIRA does something weird with webhook URLs,
such that escaped space characters (%20) are escaped again, so
that when the request gets to Zulip, the double escaped %20 is
evaluated as the literal characters `%20`, and not as a space.
We fix this by unescaping the stream name on our end before
sending the message forward!
UnexpectedWebhookEventType is a generic exception that we may
now raise when we encounter a webhook event that is new or one
that we simply aren't aware of.
webhook-errors.log file is cluttered with Stream.DoesNotExist
errors, which hides the errors that we actually need to see. So,
since check_message already sends the bot_owner a PM if the webhook
bot tries to send a message to a non-existent stream, we can ignore
such exceptions.
This commit adds a generic function called check_send_webhook_message
that does the following:
* If a stream is specified in the webhook URL, it sends a stream
message, otherwise sends a PM to the owner of the bot.
* In the case of a stream message, if a custom topic is specified
in the webhook URL, it uses that topic as the subject of the
stream message.
Also, note that we need not test this anywhere except for the
helloworld webhook. Since helloworld is our default example for
webhooks, it is here to stay and it made sense that tests for a
generic function such as check_send_webhook_message be tested
with an actual generic webhook!
Fixes#8607.