If we set an environment variable, we can stub out calls to SES and send
them to our own stub app. If the environment variable is not set, things
work as normal.
To be used alongside
https://github.com/alphagov/notifications-email-provider-stub
Also log detailed delivery status for firetext in the same place in addition
to it being logged from notifications_dao.
Logging detailed delivery statuses will help us see why messages
fail to deliver. In the future we could persist detailed delivery
status in the database.
we're using statsd to monitor how long provider requests are taking.
However, there's lots of busy work that happens inside our statsd
metrics timing window. Things like json dumping and loading, building
headers, exception handling, etc.
for firetext/mmg, the response object from requests has an elapsed
property [1], which captures from sending raw data to parsing the
response headers. for ses, it's a bit trickier, but boto3 exposes a few
event hooks [2]. it's hard to find them without stepping through the
code, but the interesting ones are before-call, after-call,
after-call-error, request-created, and response-received. The
before-call and after-call involve some marshalling, built-in retrying,
etc, while request-created and response-received are much lower level.
They might be called more than once per ses request, if boto3 itself
retries the request on 5xx, 429 and low level socket errors [3].
Add these as new `raw-request-time` metrics rather than overwriting to
avoid changing the meaning of an existing metric, and to let us compare
the metrics to see if there's a noticeable difference at all
[1] https://requests.readthedocs.io/en/master/api/#requests.Response.elapsed
[2] https://boto3.amazonaws.com/v1/documentation/api/latest/guide/events.html
[3] https://boto3.amazonaws.com/v1/documentation/api/latest/guide/retries.html#legacy-retry-mode
if doc download returns a 403, that's a screw-up on our side. it's not
helpful to a notify user for that to be passed on. the only thing they
should care about is if it's a 400, because they uploaded a filetype we
don't allow.
Everything else should return 500 internal server error.
we don't use it since we wrote our own provider stubs for performance
tests.
this removes it from the api - it's still in the DB and will be
retrieved by queries, but is set to disabled on prod
amazon SES only accepts domains encoded in punycode, an encoding that
converts utf-8 into an ascii encoding that browsers and mailservers
recognise.
We currently just send through emails as we store them (in full
unicode), which means any rogue characters break SES and cause us to
put the email in technical-failure. Most of these appear to be typos
and rogue control characters, but there is a small chance that it could
be a real domain (eg https://🅂𝖍𝐤ₛᵖ𝒓.ⓜ𝕠𝒃𝓲/🆆🆃🅵/).
We should encode to and reply-to-address emails as punycode to make
sure that they can always be sent. The chance that anyone actually uses
a unicode domain name for their email is probably pretty low, but we
should allow it for completeness.
Similar to MMG, there's a new env variable FIRETEXT_URL that can be
used to override the Firetext api URL.
This will be used to stub out both providers during the load test or
can be used to run a local API against a fake provider endpoint.
* call variables unambiguous things like `start_time` or `bst_date` to
reduce risk of passing in the wrong thing
* simplify the count_dict object - remove nested dict and start_date
fields as superfluous
* use static datetime objects in tests rather than calculating them
each time
Bumped notifications-utils to 3.7.0. Version 3.7.0 includes the
`convert_utc_to_bst` and `convert_bst_to_utc` functions and the
`LETTER_PROCESSING_DEADLINE` constant, so these have been removed from
this repo and anywhere using these has now been updated to get these
from `notifications-utils`.
Also bumped pytest by a patch version to bring in a bug fix.
> On Python 3.3 or newer, monotonic will be an alias of time.monotonic
> from the standard library. On older versions, it will fall back to an
> equivalent implementation.
– https://pypi.org/project/monotonic/
Catches the requests exception for document-download-api calls, logs
a warning and returns a matching response code and message.
Connection errors to document download result in 503 response to the
user.
Allows uploading documents to the Document Download API.
The client is configured with an API host and auth token. There's
no need for a flag to disable the client in the test environments
at the moment since the upload is only triggered by a specific
payload which would only be sent with an explicit goal of using
document download.
- If the SMS client sends a status code that we do not recognize raise a ClientException and set the notification status to technical-failure
- Simplified the code in process_client_response, using a simple map.
specifically, all of the performance platform specific data layout now
happens in performance_platform_client.py - stuff like setting the
_timestamp, period etc, and the perf platform-specific nomenclature is
all handled there.
so that it doesn't appear generic when it's actually specific to
sending the daily notification totals. To do this, split it out into a
separate performance_platform directory, containing the business logic,
and make the performance_platform_client incredibly thin - all it
handles is adding ids to payloads, and sending stats.
Also, some changes to the config (not all done yet) since there is one
token per endpoint, not one for the whole platform as we'd previously
coded
- This is a CONNECT and a READ timeout.
- Gets wrapped in the standard client exception, with a status code of 504, message Gateway timeout.
- Is quiet noisy in logs to allow us to see it
- Ensures we flick across the provider.
To test change the timeout to 0 and it will timeout.
1) It's incr not inc on the redis client, so renamed the calls everywhere
2) Redis returns bytes/string rather than an int if the value stored is an int. Cast the result to an int before use. Not you can set up the GET to do this transparently but I've not done this as we *may * use GETS for non-int and the callback sets up the cast for the connection not the call.
- Uses Redis cache to check for current count
- If not present then sets the value based on the database state
- Any Redis errors are swallowed. Cache failures should NOT fail the request.
we shouldn't try and use statsd to log an error if they fail, for example
[we also shouldn't retry sending the message but that's a problem for another time]
