Storing things in the session is proving buggy – we still have one user
(that we know about) where the session data isn’t getting written, so
they’re blocked from uploading a file.
Since all the info we’re storing in the session is about the file, it
makes sense to store it with the file.
This commit only does the writing of the metadata, once we’re sure this
is working we can do subsequent work to read it back, and remove
reliance on the session.
p1 == "should notify team be alerted of this (via pagerduty)"
urgent == "should the user be told we'll look at it"
* If it's in office hours, it's always urgent. It's never a P1 because
we'll notice it anyway
* If it's outside of office hours, it's urgent and P1 if it's severe,
otherwise it's neither
we were seeing isort produce different outputs locally and in docker -
this was due to it having different opinions about whether the tests
module (ie all our unit tests) is a first party (local) or third party
(pip installed) import. It's a first party import, so by defining this
in the setup.cfg isort settings, we can force it to be consistent
between environments.
Note: I don't know why it was different in the first place though
It is standard practice when using GOV.UK template to highlight the
selected navigation item in the propositional navigation (black bar) by
colouring it blue.
This commit adds a new subclass of `Navigation` with the mapping needed
to decide which pages belong to which item in the navigation (or none
at all).
Because we have multiple navigations, which will share the same methods
(by subclassing) but different mappings of navigation items to endpoints
by overriding the `.mapping` and `.exclude` attributes.
In research I’ve sometimes seen people click the wrong nav item. I
reckon that people’s concept of which pages live behind which navigation
items isn’t very strong.
We can reinforce this relationship by showing, for every page, which is
the corresponding nav item. The conventional way of doing this is either
with some kind of emphasis, typically colour or bold. I’ve gone for bold
because colour would be weird.
---
The implementation of this is quite loosely coupled to our application
code because:
- our application code is not well structured (eg we don’t make any use
of blueprints)
- spreading this change across lots of files in our application would
make it harder to test without actually hitting each endpoints; such
tests would be slow and verbose
So I’ve gone for more of a meta approach. Rather than testing that each
endpoint has a specific navigation item selected, I’ve gone for
validating that:
- all endpoints being mapped to are real
- all endpoints have _a_ selected navigation item (or are specifically
excluded)
This means that it’s impossible to add, change or remove an endpoint
without also updating which navigation item should be selected. And the
actual mapping is so declarative that it testing it would be redundant.
Redis is giving us a big performance boost (it’s roughly halved the
median request time on the admin app).
Once we’re confident that it’s working properly[1] we can eke out a bit
more performance from it by keeping the caches alive for longer. As
far as I can tell we’re still using Redis in a very low-volume way[2],
so increasing the number of things we’re storing shouldn’t start taxing
our Redis server at all. But reducing the number of times we have to
hit the API to refresh the cache _should_ result in some performance
increase.
---
1. ie we’re not seeing instances of stale caches not being invalidated
2. We have 2.5G of available space in Redis. Here is our current usage:
```
used_memory:7728960
used_memory_human:7.37M
used_memory_rss:7728960
used_memory_peak:16563776
used_memory_peak_human:15.79M
used_memory_lua:37888
```
This is easier to read than having to understand the arguments 1…n of
the cache decorator are ‘magic’, and gives us more flexibility about
how the cache keys are formatted, eg being able to add words in the
middle of them.
Also changes the key format for all templates to be
`service-{service_id}-templates` instead of `templates-{service_id}`
because then it’s clearer what the ID represents.
A lot of the frequently-used pages in the admin app rely on the API to
get templates.
So this commit adds three new caches:
- a single template version (including a key without a version number,
which is the current version)
- all the templates for a service
- all versions of a template
The first will be the most crucial for performance, but there’s not much
cost to adding the other two.
`@cache.delete('user', 'user_id')` is easier to read and understand than
`@cache.delete('user', key_from_args=[1])`. This will become even more
apparent if we have to start doing stuff like `key_from_args=[1, 5]`,
which is a lot more opaque than just saying
`'service_id', 'template_id'`.
It does make the implementation a bit more complex, but I’m not too
worried about that because:
- the tests are solid
- it’s nicely encapsulated
This `*params` argument seems to be copy/pasted boilerplate. It’s not
used by any consumers of this client, and makes it harder to write a
decorator for this function.
Accepting an invite changes:
- the `user_to_service` list of users returned by `GET /service/<id>`
- the `services` list return by `GET /user/<id>`
The latter change is causing the functional tests to fail.
Changed the Python link on the Documentation page to link to the new
Python docs (docs.notifications.service.gov.uk/python.html) instead of
the Python client GitHub repo.
In the same way, and for the same reasons that we’re caching the service
object.
Here’s a sample of the data returned by the API – so we should make sure
that any changes to this data invalidate the cache.
If we ever change a user’s phone number (for example) directly in the
database, then we will need to invalidate this cache manually.
```python
{
'data':{
'organisations':[
'4c707b81-4c6d-4d33-9376-17f0de6e0405'
],
'logged_in_at':'2018-04-10T11:41:03.781990Z',
'id':'2c45486e-177e-40b8-997d-5f4f81a461ca',
'email_address':'test@example.gov.uk',
'platform_admin':False,
'password_changed_at':'2018-01-01 10:10:10.100000',
'permissions':{
'42a9d4f2-1444-4e22-9133-52d9e406213f':[
'manage_api_keys',
'send_letters',
'manage_users',
'manage_templates',
'view_activity',
'send_texts',
'send_emails',
'manage_settings'
],
'a928eef8-0f25-41ca-b480-0447f29b2c20':[
'manage_users',
'manage_templates',
'manage_settings',
'send_texts',
'send_emails',
'send_letters',
'manage_api_keys',
'view_activity'
],
},
'state':'active',
'mobile_number':'07700900123',
'failed_login_count':0,
'name':'Example',
'services':[
'6078a8c0-52f5-4c4f-b724-d7d1ff2d3884',
'6afe3c1c-7fda-4d8d-aa8d-769c4bdf7803',
],
'current_session_id':'fea2ade1-db0a-4c90-93e7-c64a877ce83e',
'auth_type':'sms_auth'
}
}
```
