refs https://github.com/TryGhost/Team/issues/637
The "free" price - when Members signup without using Stripe, should have
a name and description, so that it can be displayed in Portal in a
similar way to paid price's. As there is only ever one, and it is not a
fully fledged price, a setting makes more sense than a dedicated db
table.
refs https://github.com/TryGhost/Team/issues/586
We are no longer using the `stripe_plans` setting, instead we are using
the `stripe_prices` database table. However, we must keep the setting as
the migration from the setting to the database is not done as a standard
migration, but in code. This means our code has to still read and pass
the setting because we will never know if the migration in code has run
yet.
The `portal_plans` setting has been updated to only include 'free' by
default, because the setting must include id's now rather than names.
refs https://github.com/TryGhost/Team/issues/586
A discussion in the Members team resulted in us determining that we do
not need to enforce unique names for Products. Stripe does not enforce
uniqueness for their Products, and we feel it's not necessary for us to.
refs https://github.com/TryGhost/Team/issues/581
refs https://github.com/TryGhost/Team/issues/582
When publishing a post via the API it was possible to send it using `?email_recipient_filter=all/free/paid` which allowed you to send to members only based on their payment status which is quite limiting for some sites.
This PR updates the `?email_recipient_filter` query param to support Ghost's `?filter` param syntax which enables more specific recipient lists, eg:
`?email_recipient_filter=status:free` = free members only
`?email_recipient_filter=status:paid` = paid members only
`?email_recipient_filter=label:vip` = members that have the `vip` label attached
`?email_recipient_filter=status:paid,label:vip` = paid members and members that have the `vip` label attached
The older `free/paid` values are still supported by the API for backwards compatibility.
- updates `Post` and `Email` models to transform legacy `free` and `paid` values to their NQL equivalents on read/write
- lets us not worry about supporting legacy values elsewhere in the code
- cleanup migration to transform all rows slated for 5.0
- removes schema and API `isIn` validations for recipient filters so allow free-form filters
- updates posts API input serializers to transform `free` and `paid` values in the `?email_recipient_filter` param to their NQL equivalents for backwards compatibility
- updates Post API controllers `edit` methods to run a query using the supplied filter to verify that it's valid
- updates `mega` service to use the filter directly when selecting recipients
refs https://github.com/TryGhost/Team/issues/581
Editors are allowed to restrict post visibility and send emails to particular member segments, they need to be able to read labels so that they can select them in a member segment.
refs https://github.com/TryGhost/Team/issues/496
We want to give more control over the default selection of email recipients when publishing a post, to do that we need somewhere to store those settings. These settings are site-wide and intended for use by admins to control the default editor behaviour for all staff users. They _do not_ control API behaviour, if you want to send email when publishing via the API it's still necessary to explicitly opt in to that using the `?email_recipients_filter=` query param.
- new `editor` settings group to indicate that these settings only affect the UI rather than the API
- `editor_default_email_recipients` controls overall behaviour, string/enum with these allowed values:
- `'disabled'`: no option to send email is shown in the editor's publishing dropdown
- `'visibility'`: (default) selected member segment is dynamic and matches the post visibility filter
- `'filter'`: specific member filter defined in `editor_default_email_recipients_filter` setting
- `editor_default_email_recipients_filter` is an NQL string for selecting members, used when `editor_default_email_recipients` is set to `'filter'`
- default value is `'all'`
- the segment string can be any valid NQL filter with the additional special-case values of `'all'` and `'none'`
- single authors were deprecated in v1.22 when we added multiple authors
- we always thought we'd clean this up a lot sooner, but it's stuck because it's an annoying thing to break people's shit over
- still saying "remove in vX" isn't useful, we need to know how long a feature has been deprecated so we can judge whether it's safe to remove
refs https://github.com/TryGhost/Team/issues/586
The `products` and `stripe_prices` tables are missing a description
column which will be used by Portal to display information about the
products and prices
refs 829e8ed010
- i18n is used everywhere but only requires shared or external packages, therefore it's a good candidate for living in shared
- this reduces invalid requires across frontend and server, and lets us use it everywhere until we come up with a better option
refs https://github.com/TryGhost/Team/issues/579
The previous `members_allow_free_signup` -> `members_signup_access` migration made a direct correlation between the toggle `true/false` to `all/invite` under the assumption that behaviour between the two settings would be identical. The assumption was incorrect and the behaviour is changing so `invite` forces invite-only mode, stopping all front-end signup to free or paid plans with the free plan now being disabled via the portal plans setting.
- check existing `members_signup_access` setting and if it's `'invite'` migrate it to `'all'` where signup should still be possible. The "invite-only" mode should only be active if certain conditions are met:
- Stripe is not configured ("allow free member signup" off and no Stripe showed "invite-only" in portal)
- Stripe is configured but no plans are selected in portal (no plans showed "invite-only" in portal)
- when migrating `'invite'` to `'all'`, also remove `'free'` plan from the `portal_plans` setting to avoid previously paid-only sites unexpectedly showing a free plan on signup
refs https://github.com/TryGhost/Team/issues/634
- find earliest backup file created when a 4.3 migration was run, if found use the `members_allow_free_signup` value from there to change `members_signup_access` from `'all'` to `'invite'` if necessary
- Having these as destructured from the same package is hindering refactoring now
- Events should really only ever be used server-side
- i18n should be a shared module for now so it can be used everywhere until we figure out something better
- Having them seperate also allows us to lint them properly
refs https://github.com/TryGhost/Team/issues/634
- the migration moving `members_allow_free_signup` to `members_signup_access` was expecting a raw boolean setting value but the actual value is a string so always evaluated as truthy making all sites look like they had "allow free members signup" toggled on when generating the new setting's value
- updated to check for an explicit string value in `up` and set an explicit string value in `down`
refs c873899e49
- as of `bson-objectid` v2.0.0, this library exports the function
to generate an ObjectID directly, and then you need to use `.toHexString()`
to get the 24 character hex string - 6696f27d82
- this commit removes all uses of `.generate()` and replaces with this
change
refs https://github.com/TryGhost/Team/issues/619
As part of the Custom Products work, we are linking members to products
when updating their subscriptions. This requires that we have at least
one product in the database. For existing sites that are using Members
this is handled by the v4.3 03 migration. But for new sites we must
include a fixture.
Also fixes the tests to not reply on the order of the fixtures
refs https://github.com/TryGhost/Team/issues/586
- Adds new `stripe_price_id` column to subscriptions table to store stripe price ids with `index`
- Populates `stripe_price_id` column value to current `plan_id` making the `plan_*` values redundant
- Updates tests
refs https://github.com/TryGhost/Team/issues/586
If a product inside Ghost is deleted, we want to cascade delete all associated Stripe products and prices as they always need to refer back to a ghost product and will hang without any reason otherwise. This change adds cascade delete for products -> stripe_products -> stripe_prices to avoid broken states
refs https://github.com/TryGhost/Team/issues/579
Currently the members signup setting is explicitly yes/no to allowing free members signup, with the implication that when set to "no" members is still active but members have to be created via Stripe or the admin API.
This change renames the setting and changes its type to allow more than a binary option.
- migration to create/update the new setting based on the old value
- free signup = "all", no free signup = "invite"; matches the current UI for this setting
- rename setting everywhere it's used/tested against
- modify `getAllowSelfSignup()` used to configure members packages to only return `true` when the new setting is set to `'all'` to match behaviour to the older setting
- update importer to rename the setting when importing from an older Ghost version
refs https://github.com/TryGhost/Team/issues/618
- The `oauth_client_id` and `oauth_client_secret` are placeholders to store OAuths related data.
- The flag for `oauth_enabled` or anything along those lines was not added intentionally in favour of checking if the `oauth_client_id` & `oauth_client_secret` are null.
refs https://github.com/TryGhost/Team/issues/616
All roles which can publish posts should be able to read/browse products, as content gating
will be based on products going forward.
Creating, updating & destroying products will often make modifications to Stripe which requires
Administrator or Owner roles.
We also improve the permissions tests so that we no longer rely on things being in a particular
order.
refs https://github.com/TryGhost/Team/issues/586
- Change the interval column to be `nullable` as one time payments won't have any interval
- Remove the `livemode` column as we store the connected account's livemode status at top level
no issue
- There is a valid subset of statuses that can be set for the users but there's no "isIn" validation for possible values
- Additionally some of the statuses like warn-1, warn-2, etc. don't have a clear usecase (or at least nothing was found in the codebase for them to be used). They might be up for removal if this assumption is correct
refs https://github.com/TryGhost/Team/issues/586
- Add the `stripe_products` table, so that we can map Stripe Products to Products in Ghost
- Add the `stripe_prices` table, so that we can associate Stripe Prices to Products table
refs https://github.com/TryGhost/Team/issues/586
- Add the products table, so that we can store Products in Ghost
- Add the members_products table, so that we can associate Members w/ Products
- Use sort_order on the members_products table to follow the same convention in members_labels
- Populate the products table with a single product, using the name from the stripe_product_name setting
- Populate the members_products table with relations based on the status column of the members table
Populating the tables allows us to transition from the current system, which does not care about products, into the
new system, where Products are used to group members. The intention is that all existing paid members have the
same product
closes https://github.com/TryGhost/Team/issues/595
Due to a bug in `mrr_delta` calculation, we ended up reducing the MRR delta by twice the original amount when a subscription goes from active to canceled and storing it in `members_paid_subscription_events` table, which is used to show the MRR chart on Dashboard. The way we identify the incorrect events in the table which got the double negative value is by checking if they match certain criteria - Both `from_plan` and `to_plan` have same value as a subscription changes status while being on same plan.
This migration halves the `mrr_delta` for incorrect events to restore the correct MRR change for the site.
refs https://github.com/TryGhost/Team/issues/555
- Export files included a lot of data which was not used in the importer, for example: members, labels, migrations and many more. This lead to a lot of clutter in the import files and made it hard to reason about their purpose.
- The main purpose of exports - is to export importable resources. These are posts, tags, and users. The rest of data like members or migrations either have their own importer (like CSV importer for members) or does not and should not have any ways to be imported.
- These changes are in now way complete. It's a first step towards resource-based exports which could be properly versioned in the future on API level and not be a mirror of the DB structure.
- This is sort of a breaking change. But we are doing it because: (1) its an internal API that should not be used by external clients, (2) there was no public contract to have this API stable at any point, (3) we really need to get back the control over export files structure and size
- In case an external client was dependent on some structure of the exported json file they can still pass in ALL of previously exported data by passing table names in `include` query parameter.
refs https://github.com/TryGhost/Team/issues/555
- Previous blocklist approach was resulting in adding every single new table into an export automatically. Which creates possibility to leak sensitive data if not used porperly. Allowlist approach gives better control over what is exported, makes this information explicit, and version-control friendlier
refs https://github.com/TryGhost/Team/issues/555
- The getVersionAndTables was doing too much and was only used once creating clutter in doExport method. Refactored code doing 2 direct calls instead of destructuring "dances".
closes https://github.com/TryGhost/Team/issues/557
After updating to v4 on SQLite from v3, we were unable to delete members due to a foreign key mismatch error. This is because the migrations which recreates the tables for `members_stripe_customers_subscriptions` and `members_stripe_customers` doesn't add back the unique constraint which is needed by FKs for reference.
The migration creates the missing UNIQUE constraints on the tables.
- With 4.0 we have a brand new version of Casper, new fixtures and new default settings
- Fixture posts cover the key features and give users an introduction to how to use their site
- This all comes from the marketing and design teams to refresh the look and feel of Ghost and give users the best possible onboarding experience
Note: this fixture overhaul includes
- new content for new 4.0 features
- regenerated post content using our updated mobiledoc structure
- a switch from British to US English
refs 2bba9989db
- Note: this will require new fixtures so that the navigation links actually work
- These updates are all in aid of getting the best possible default setup and onboarding experinence for new Ghost users
- With 4.0 we have a brand new version of Casper, new fixtures and new default settings
- This all comes from the marketing and design teams to refresh the look and feel of Ghost
Note on accent color:
This commit changes the default accent colour again.
The intention is that new sites should get #FF1A75 (pink) as their default.
Any existing sites that do not have an accent colour set yet, should get #15171A (black) on upgrading to 4.0.
These are different as they are different experinces. Fresh sites will be guided to pick a color, so
a bright color is more visible and helps to see what can be done, whilst existing sites get a muted
black, that should be a sensible fall back color.
refs TryGhost/Team#535
We want to ensure that a site will always have a default value of
`'#15171A'` for the accent_color setting.
Since the boot process changed we have three cases to account for:
1. Setting does not exist
2. Setting exists with no value
3. Setting exists with a value
It is only in the case of 2. that we want the migration to update the
database with a default value.
In the case of 3. the site owner has already set a value, which we do
not want to override.
In the case of 1. the setting will be created (and populated with
default value) from the default-settings.json file, by the
populateDefaults method called from the settings service
We also update the accent_color setting to include a non-empty
validation, to ensure that the setting will always have a value, as
sites before 4.x may have an empty accent_color, we must update the
importer to set the default value if one is not present. Otherwise we
would run into validation errors and even if we didn't would have an
invalid database state.
no-issue
We were originally checking the state of the database, e.g. if a foreign
key constraint existed, so that we could conditionally act upon it. This
was to ensure that our migrations are idempotent.
Some database configurations, for example if you have many databases on
a single MySQL instance, would cause these information_schema queries to
take an exceptionally long time.
In order to speed up migrations, we instead attempt the action we want
to apply to the database, and then catch relevant errors to ensure the
migration is idempotent.
SQLite does not error when adding duplicate foreign or primary key
constraints, meaning that we must keep in pre-checks for these
operations, when running on SQLite
Co-authored-by: Daniel Lockyer <hi@daniellockyer.com>
no issue
Upgrading from v1 or v2 can result in successful upgrades but with mobiledoc errors showing in the logs:
```
NAME: InternalServerError
MESSAGE: Mobiledoc card 'card-markdown' not found.
```
The errors do not signify a problem as long as the 4.0 migrations run because those rename the deprecated card before re-rendering.
- `@tryghost/kg-default-cards` dropped support for `card-markdown` cards. 4.0 migrations handled this by renaming all `card-markdown` cards to `markdown` before re-generating any content
- 2.0 and 3.0 also had migrations that re-generated content but they are run before the 4.0 card rename migration meaning that the mobiledoc renderer sees cards that it doesn't know about. The behaviour for unknown cards is to log an error and skip rendering of that card
- by NOOPing the 2.0 and 3.0 migrations we eliminate the incompatibility errors and reduce the amount of processing the upgrade needs to perform
closes https://github.com/TryGhost/Team/issues/467
- switches to storing "transform-ready" URLs in the database
- transform-ready URLs contain a `__GHOST_URL__` placeholder that corresponds to the configured url that gives a few benefits
- much faster and less memory intensive output transformations through not needing to parse html or markdown - the transform can be achieved using a straightforward regex find+replace
- ability to change to/from or rename subdirectory without any manual updates to the database
- modified existing 4.0 url-transformation migration rather than adding another one and repeating the transformation on posts rows
refs https://github.com/TryGhost/Team/issues/525
We expect the member event tables to be large, and they contain what is
considered metadata. For this reason we do not want to include them in
the export of sites.
refs: https://github.com/TryGhost/Team/issues/510
- In the case that host config is provided, keep staff users within the limiti
- The definition of a staff user is a user with a role other than Contributor, and whose status is not inactive
- Contributors don't count
- Suspended (status inactive) users don't count
- Locked users DO count
- Invited users DO count
- You can't invite more staff users whilst there are pending invites
- You can't unsuspend a user, or change the role on a user in such a way as will take you over your limit
- You can't import staff users - all imported users are automatically set to Contributors
- As part of this work, we are changing the default Ghost user to a Contributor otherwise it uses up a staff user
Note: there is one known active bug with this commit.
- Assume you have one remaining user within your limit. You send an invite, this works.
- You cannot "resend" that invite, it will think you're sending a new invite and hit the limit
- You must "revoke" that invite first, and create a new one
- This bug exists because the resend function uses the add endpoint & does a delete+add, but this hits the permission check before the delete
refs https://github.com/TryGhost/Team/issues/513
refs https://github.com/TryGhost/Team/issues/477
- We have skipped work to improve the 'defaultTo' value when working on Ghost 4.0 release, so adding this comment while context loaded
- defaultTo should not be set to anything as it leads to more maintenance work during major version bump
- having validation might make sense but could lead to similar maintenance work unless it's linked to some global nosion of "supported API versions" used everywhere
no-issue
The slack setting in 1.x did not have a `username` property. When
updating from 1.x, the migration to move the slack setting from a JSON
blob to two individual settings, would assume that the setting in the
database would have a value for the `username` property. This resulted
in errors on SQLite "sqlite does not support inserting default values."
The fix here is to add defaults when reading from the database, meaning
that we will _never_ attempt to insert `undefined`
refs https://github.com/TryGhost/Team/issues/476
* Moved paid subscription events population migration
This migration relies on the members_stripe_customers and
members_stripe_customer_subscriptions tables having no orphaned records
in order for it to correcly generate its data.
The migration to clean up orphaned records in those tables has not been
implemented yet, moving this migration free's up the "14" slot
* Removed orphaned stripe data from SQLite3
SQLite databases do not handle removing orphaned stripe records after a
member has been deleted. Our migration to populate the paid subscription
events relies on each customer and subscription being associated with a
member.
refs https://github.com/TryGhost/Team/issues/494
The migrations in 3.1.0 which added email permissions did not add those
permissions to the roles. This means that whilst we have the permissions
in the database, only the Owner role could use any of them.
This migration ensures that the email related permissions are added to
the correct roles.
refs https://github.com/TryGhost/Team/issues/467
refs https://github.com/TryGhost/Team/issues/221
- we've introduced backwards-compatible changes to rendering in 3.0 such as srcset and sizes which will only have taken effect on posts created or edited since the changes were made
- 4.0 brings additional changes such as image card width/height
- re-generating the `html` field of all posts from the `mobiledoc` brings all content up to latest rendering output
refs https://github.com/TryGhost/Team/issues/221#issuecomment-759105424
- Mailgun responds to an email send with a provider id in the format `<x@y.com>` but everywhere else it's used in their API it uses the format `x@y.com`
- updates email batch save to strip the brackets, and migration removes brackets from existing records so we no longer have to add special handling for the stored id any time we use it
refs https://github.com/TryGhost/Ghost/issues/12496
- having the logging require here means that workers wanting to use the db are unable to do so without requiring logging as a side-effect
- `connection.loggingHook` does not appear to be widely used for anything outside of specific debugging scenarios when using MySQL so it should be safe to disable until a proper fix is found for workers+logging leaking file descriptors
refs https://github.com/TryGhost/Ghost/pull/12598
- This changeset adds idepmotence to situations where unique contraint has to be dropped or added to the table
- Note '4.0/07-alter-unique-constraint-for-posts-slug.js` was migration that was effected by lack of idempotence
refs https://github.com/TryGhost/Ghost/issues/10318
- Storing JSON object in settings has caused multiple bugs in the past and was considered an antipattern
- This is a last bit in the long process of getting rid of "object" settings in the database. At this point there should be no settings with this type. Yey!
- This commit removes the old boot process and any files that are no longer needed as a result
- Remove the duplicate event for triggering inactive themes to load
- Tidied up a few other bits
no issue
- all migrations should contain a logging message
- info for successful things, or warn if we deviated from what was
expected for some reason
- also added some spacing to make them easier to read
refs https://github.com/TryGhost/Ghost/issues/10318
- API changes introduced:
canary/v4 Admin API
GET /settings/ (browse)
+ "unsplash" present in response as boolean value
GET /settings/:settingName (read)
+ "unsplash" present in response as boolean value
PUT /settings/ (edit)
+ "unsplash" updates setting, accepts ONLY boolean format
v3 Admin API
GET /settings/ (browse)
+ "unsplash" present in response with object value
GET /settings/:settingName (read)
+ "unsplash" present in response with object value
PUT /settings/ (edit)
+ "unsplash" updates setting, accepts either boolean or object formats
v2 Admin API
GET /settings/ (browse)
+ "unsplash" present in response with object value
GET /settings/:settingName (read)
+ "unsplash" present in response with object value
PUT /settings/ (edit)
+ "unsplash" updates setting, accepts object format
refs https://github.com/TryGhost/Ghost/pull/12631
- Initialy writen migration would break if executed twice
- Also accounted for situation if only part of the migration executed leaving only one of the values migrated
refs https://github.com/TryGhost/Team/issues/332
- The last value that has been used in the code was "members"
- By default members will be always "on" starting Ghost 4.0, so there's no need for this flag anymore
- Therefore there's no real need to keep "labs" around
refs https://github.com/TryGhost/Team/issues/467
refs https://github.com/TryGhost/Team/issues/221
- we added robust url transformation in Ghost 3.0 which ensures newly created or edited content is stored with relative URLs in the database
- this migration loops over all posts (and posts_meta) in the database performing the absolute->relative transformation to normalise data for old posts
refs https://github.com/TryGhost/Ghost/issues/12646
- adds `ghostVersion` property to mobiledoc of all posts so that we can pin the rendering output of existing content to protect against future breaking changes
- cleans any deprecated markdown card names from old Ghost 1.0 content
- cleans up HR cards that had an [accidental payload added](610d801bcf)
refs https://github.com/TryGhost/Ghost/issues/12646
- if the version is missing then the content was created before Ghost 4.0
- setting the version to `'3.0'` means it will continue to use the same rendering output so there are no unexpected breaking changes when migrating content
refs https://github.com/TryGhost/Ghost/issues/12602
* Updated members_status_events table
By replacing the `status` column with a `from_status` and `to_status`
column, we are able to track the changes between multiple statuses
easier, and accumulate the data. e.g. the delta of paid members in a
given time range is the sum of the `to_status` columns set to 'paid'
minus the sum of the `from_status` columns set to 'paid' within that
time range
* Updated MEGA to handle addition of 'comped' status
With the addition of the 'comped' status, we need to ensure that MEGA
will still send emails to the correct recipients. I've opted to use an
"inverse" filter, as that is the intention of the free/paid split in
MEGA - as far as MEGA is concerned, "free" is the opposite of "paid"
* Updated customQuery for MemberStatusEvent
With the `status` column replaced with `from_status` and `to_status`
this allows us to fix and update the customQuery to correctly accumulate
the data into deltas over time, broken down by day.
* Populated members_status_events table
As the table will be used to generate deltas, we need to backfill the
data so that existing sites will be able to sum up the deltas and
calculate correct data.
The assumptions used in backfilling is that a Member's current status,
is their only status.
refs https://github.com/TryGhost/Ghost/issues/12602
As part of collecting Member event data, we have added a third status
for members "comped" - this fixes the population of the column to handle
this
refs https://github.com/TryGhost/Ghost/issues/12646
- `card-markdown` support is being removed from the default mobiledoc cards so we need to make sure imported content doesn't fail
- removed long-unused `cardName` payload property from tests
refs https://github.com/TryGhost/Ghost/issues/10318
- Object format used in previous "slack" setting was considered an
anti-pattern. Flag structure of separate slack_url and slack_username
values was extracted out of the "slack" JSON.
refs https://github.com/TryGhost/Ghost/issues/12602
As we only want to add events for when an email is changed, we need to store the previous email if we want a complete log of all emails for a member
refs https://github.com/TryGhost/Ghost/issues/12602
* Added members_payment_events table
This table will store successful and unsuccessful payment attempts, and
can be used to calculate gross volume over time.
* Added members_login_events table
This table can be used to audit member logins
* Added members_email_change_events table
This table will allow us to store a history of email addresses associated with a member
* Added members_status_events table
This table will allow us to track the change in status over time for members, as well
as calculate aggregates over time, e.g. paid members over time
* Added members_paid_subscription_events
This table will allow us to track subscriptions changes for members, as well as
calculating MRR over time
refs https://github.com/TryGhost/Ghost/issues/12567
- Changing unique constraint from slug to slug+type should allow for posts and pages to be created with the same slug
- The constraint will be present on application layer for API v4 while we figure out how to deal with it in API v5
Background:
- Ghosts existing boot process is split across multiple files, has affordances for outdated ways of running Ghost and is generally non-linear making it nigh-impossible to follow
- The web of dependencies that are loaded on boot are also impossible to unpick, which makes it really hard to decouple Ghost
- With 4.0 we want to introduce a new, linear, simpler, clearer way to boot up Ghost to unlock decoupling Ghost into much smaller pieces
This commit:
- adds a new ghost.js file which switches between boot mode with `node index` or `node index old` so that if we find bugs we can work around them this week
- Note: the old boot process will go away very soon, but ghost.js will remain as the interface between the command to start Ghost and the application code
- reworks the database migration process into a standalone utility, so that the DB is handled as one simple step of the boot process, decoupled from everything else
- is missing tests for this new db utility
- leaves a lot of work to do around loading core code, services, express apps in a sensible order, as work to fix this would start to break the old boot process
- doesn't use the new maintenance app because we aren't restarting the server here, instead we have the concept of a "core app" that starts in maintenance mode - need to think about how apps will be decoupled in the near future
refs https://github.com/TryGhost/Ghost/issues/12602
This allows us to backfill the data for testing purposes as well as for
use by existing sites. The mechanism for determining the date of an
unsubscribe event is crude, we use the date of the last update, which we
might expect to be _sometimes_ correct, but not always. We store the
`source` as NULL for unsubscribes as we cannot determine that with any
certainty whatsoever.
