This has been a hair-pulling rabbit hole of an issue. #1931 and others.
When the `next-campaign-subscribers` query that fetches $n subscribers
per batch for a campaign returns no results, the manager assumes
that the campaign is done and marks as finished.
Marathon debugging revealed fundamental flaws in qyery's logic that
would incorrectly return 0 rows under certain conditions.
- Based on the "layout" of subscribers for eg: a series of blocklisted
subscribers between confirmed subscribers.
A series of unconfirmed subscribers in a batch belonging to a double
opt-in list.
- Bulk import blocklisting users, but not marking their subscriptions
as 'unsubscribed'.
- Conditions spread across multiple CTEs resulted in returning an
arbitrary number of rows and $N per batch as the selected $N rows
would get filtered out elsewhere, possibly even becoming 0.
After fixing this and testing it on our prod instance that has
15 million subscribers and ~70 million subscriptions in the
`subscriber_lists` table, ended up discovered significant inefficiences
in Postgres query planning. When `subscriber_lists` and campaign list IDs
are joined dynamically (CTE or ANY() or any kind of JOIN that involves)
a query, the Postgres query planner is unable to use the right indexes.
After testing dozens of approaches, discovered that statically passing
the values to join on (hardcoding or passing via parametrized $1 vars),
the query uses the right indexes. The difference is staggering.
For the particular scenario on our large prod DB to pull a batch,
~15 seconds vs. ~50ms, a whopping 300x improvement!
This patch splits `next-campaign-subscribers` into two separate queries,
one which fetches campaign metadata and list_ids, whose values are then
passed statically to the next query to fetch subscribers by batch.
In addition, it fixes and refactors broken filtering and counting logic
in `create-campaign` and `next-campaign` queries.
Closes#1931, #1993, #1986.
This commit splits roles into two, user roles and list roles, both of which
are attached separately to a user.
List roles are collection of lists each with read|write permissions, while
user roles now have all permissions except for per-list ones.
This allows for easier management of roles, eliminating the need to clone and
create new roles just to adjust specific list permissions.
- Filter lists by permitted list IDs in DB get calls.
- Split getLists() handlers into two (one, all) for clarity.
- Introduce new `subscribers:get_by_list` permission.
- Tweak UI rendering to work with new per-list permssions.
- Add materialized views for list -> subscriber counts, dashboard chart,
and dashboard aggregate stats that slow down significantly on large
databases (with millions or tens of millions of subscribers). These
slow queries involve full table scan COUNTS().
- Add a toggle to enable caching slow results in Settings -> Performance.
- Add support for setting a cron string that crons and periodically
refreshes aggregated stats in materialized views.
Closes#1019.
- Add new 'Subscriptions' table on the subscriber list form that shows subs,
IP, and other data.
- Add new `meta` JSONB field to `subscriber_lsts` table.
Closes#1329.
- Change tiled UI to table UI.
- Add support for search and pagination.
- Important: This breaks the `GET /api/media` API to introduce pagination
fields. Media items are now moved into `{ data: results[] }`.
- Adds support for arbitrary file uploads with an admin setting to select allowed file extensions.
- Adds support for attaching media (files) to campaigns.
Remove `messenger.go` and move the interface definition to `manager`
and the `Message` struct to the `models` package, removing superflous
and redundant message structs used in multiple places.
- Add support for `complaint` to the SES bounce processor.
- Add support for `hard/soft` to Sendgrid bounce processor.
- Add new bounce actions `None` and `Unsubscribe`.
- Add per type (`soft/hard/complaint`) bounce rule configuration to
admin settings UI.
- Refactor Cypress bounce tests.
- Introduces a new option on the settings UI to optionally publish the full campaign body in
public archive RSS feeds.
Closes#1033
Co-authored-by: Kailash Nadh <kailash@nadh.in>
The original PR accepts files to the `/tx` endpoints as Base64 encoded
strings in the JSON payload. This isn't ideal as the payload size
increase caused by Base64 for larger files can be significant,
in addition to the added clientside API complexity.
This PR adds supports for multipart form posts to `/tx` where the
JSON data (name: `data`) and multiple files can be posted simultaenously
(one or more `file` fields).
--- PR: #1166
* Attachment model for TxMessage
* Don't reassign values, just pass the manager.Messgage
* Read attachment info from API; create attachment Header
* Refactor tx attachments to use multipart form files. Closes#1166.
---
Co-authored-by: MatiSSL <matiss.lidaka@nic.lv>
Bots easily bypass the simple `nonce` hack. This commit adds support
for the hcaptcha.com widget.
- New `Security` tab in the admin settings UI.
- Enable/disable CAPTCHA.
- Render CAPTCHA on the public subscription form.
Closes#1116.
This patch adds new array fields on `POST /tx`: `subscriber_emails[]`, `subscriber_ids[]`.
Either of these array fields can be sent with multiple subscribers.
The individual non-array fields `subscriber_id` and `subscriber_email` are deprecated.
Closes#994.
This commit adds a new API `POST /api/tx` that sends an ad-hoc message
to a subscriber based on a pre-defined transactional template. This is
a large commit that adds the following:
- New campaign / tx template types on the UI. tx templates have an
additional subject field.
- New fields `type` and `subject` to the templates table.
- Refactor template CRUD operations and models.
- Refactor template func assignment in manager.
- Add pre-compiled template caching to manager runtime.
- Pre-compile all tx templates into memory on program boot to avoid
expensive template compilation on ad-hoc tx messages.
