refs https://github.com/TryGhost/Toolbox/issues/127
- The resource cache is needed to have quick and reproducible state of the resouces tied to the urls instead of waiting for the db queries to finish.
- Allows to use UrlService without any database connection at all - useful for unit testing
refs https://github.com/TryGhost/Toolbox/issues/125
- Config initialization for the URL Resouces is a separate stage which doesn't have to be bundled along with resouce fetching method
- It gives even more flexibility when composing different ways to get the "resources" loaded into memory: right now it's from the DB but could come from a cache
refs https://github.com/TryGhost/Toolbox/issues/125
- The "fetchResources" method did way to many things extracted event listener setup logic to a separate method
- This allows to call out these stages as needed if we retreive resources separately from a cache of some sort and don't need to wait for the database response
refs https://github.com/TryGhost/Toolbox/issues/125
- The "fetchResources" is only used from one place and does way to many things at once:
- Fetches resources from the DB-
- Hooks up event listeners
- Starts the queue
- These are three different things, and should be three different methods ideally
refs #10790
- Moved /core/apps into core/frontend
- Moved /core/server/helpers to /core/frontend/helpers along with /core/server/services/themes
- Changed helper location in overrides
- Moved /core/server/services/routing to /core/frontend/services
- Moved /core/server/services/url to /core/frontend/services
- Moved /core/server/data/meta to /core/frontend/meta
- Moved /core/server/services/rss to /core/frontend/services
- Moved /core/server/data/xml to /core/frontend/services
refs https://github.com/TryGhost/Ghost/issues/10124
- This PR introduced additional db calls in URL service due to the need for a model recalculation (we can't rely on the objects that come with events)
refs #10124
- Author model returns only users that have published non-page posts
- Added a public controller for tags (should be extracted to separate Content API controller https://github.com/TryGhost/Ghost/issues/10106)
- Made resource configuration dynamic based on current theme engine
- This needs a follow-up PR with fixes to the problems described in the PR
refs #9744
- added two new endpoints to upload/download routes.yaml
- reload site express app on successful/valid upload
- reload url service on sucessfuly upload
- force clear cache of pages
- ensure we keep a backup of the routes.yaml file
- this feature was mostly tested manually
- @TODO: i have to write unit tests - will do later
- @TODO: do a memory test to ensure we haven't introduced any memory leaks with this feature
refs #9601
- on resource update/add we have cached mobiledoc, html etc
- we have to ensure we exclude the fields (same procdure happens on bootstrap)
- these excluded fields don't have to be cached
- otherwise memory usage is higher in general
- ensure we cache relations with a minimal field set on resource update/add
no issue
- discovered while testing
- SQLite3 has a restriction that you cannot query more than 999 SQL variables (e.g. fetch all tag relations for all posts)
- if you have more than 999 posts in your database, Ghost wasn't able to finish the bootstrap
- the url service tried to fetch all posts & relations, but could not complete, because SQlite3 has thrown
-> "too many SQL variables"
- i have added a recursive query strategy only for SQLite3
- use offset/limit
no issue
- there was a timing bug in Ghost
- we do operations in parallel on bootstrap
- 1) we fetch the resources as early as possible
- 2) we do all the rest (express bootstrapping, theme loading, router registration) etc.
- it can happen that (2) happens too slow and ends in the situation that the queue, which is responsible
to handle both parallel actions, does not wait for the routers and closes the event
- this is a short term fix
- i need to reconsider if there is a better long term fix
refs #9601
### Dynamic Routing
This is the beta version of dynamic routing.
- we had a initial implementation of "channels" available in the codebase
- we have removed and moved this implementation
- there is now a centralised place for dynamic routing - server/services/routing
- each routing component is represented by a router type e.g. collections, routes, static pages, taxonomies, rss, preview of posts
- keep as much as possible logic of routing helpers, middlewares and controllers
- ensure test coverage
- connect all the things together
- yaml file + validation
- routing + routers
- url service
- sitemaps
- url access
- deeper implementation of yaml validations
- e.g. hard require slashes
- ensure routing hierarchy/order
- e.g. you enable the subscriber app
- you have a custom static page, which lives under the same slug /subscribe
- static pages are stronger than apps
- e.g. the first collection owns the post it has filtered
- a post cannot live in two collections
- ensure apps are still working and hook into the routers layer (or better said: and register in the routing service)
- put as much as possible comments to the code base for better understanding
- ensure a clean debug log
- ensure we can unmount routes
- e.g. you have a collection permalink of /:slug/ represented by {globals.permalink}
- and you change the permalink in the admin to dated permalink
- the express route get's refreshed from /:slug/ to /:year/:month/:day/:slug/
- unmount without server restart, yey
- ensure we are backwards compatible
- e.g. render home.hbs for collection index if collection route is /
- ensure you can access your configured permalink from the settings table with {globals.permalink}
### Render 503 if url service did not finish
- return 503 if the url service has not finished generating the resource urls
### Rewrite sitemaps
- we have rewritten the sitemaps "service", because the url generator does no longer happen on runtime
- we generate all urls on bootstrap
- the sitemaps service will consume created resource and router urls
- these urls will be shown on the xml pages
- we listen on url events
- we listen on router events
- we no longer have to fetch the resources, which is nice
- the urlservice pre-fetches resources and emits their urls
- the urlservice is the only component who knows which urls are valid
- i made some ES6 adaptions
- we keep the caching logic -> only regenerate xml if there is a change
- updated tests
- checked test coverage (100%)
### Re-work usage of Url utility
- replace all usages of `urlService.utils.urlFor` by `urlService.getByResourceId`
- only for resources e.g. post, author, tag
- this is important, because with dynamic routing we no longer create static urls based on the settings permalink on runtime
- adapt url utility
- adapt tests
refs https://github.com/TryGhost/Team/issues/65
We are currently work on dynamic routing (aka channels).
An important piece of this feature is the url service, which always knows the url of a resource at any time.
Resources can belong to collections or taxonomies, which can be defined in a [routing yaml file](https://github.com/TryGhost/Ghost/issues/9528). We are currently shipping portions, which will at end form the full dynamic routing feature.
### Key Notes
- each routing type (collections, taxonomies, static pages) is registered in order - depending on the yaml routes file configuration
- static pages are an internal concept - they sit at the end of the subscriber queue
- we make use of a temporary [`Channels2`](https://github.com/TryGhost/Ghost/pull/9550/files#diff-9e7251409844521470c9829013cd1563) file, which simulates the current static routing in Ghost (this file will be modified, removed or whatever - this is one of the next steps)
- two way binding: you can ask for a resource url based on the resource id, you can ask for the resource based on the url
- in theory it's possible that multiple resources generate the same url: we don't handle this with collision (because this is error prone), we handle this with the order of serving content. if you ask the service for a resource, which lives behind e.g. /test/, you will get the resource which is served
- loose error handling -> log errors and handle instead of throw error and do nothing (we log the errors with a specific code, so we can react in case there is a bug)
- the url services fetches all resources on bootstrap. we only fetch and keep a reduced set of attributes (basically the main body of a resource)
- the bootstrap time will decrease a very little (depending on the amount of resources you have in your database)
- we still offer the option to disable url preloading (in your config `disableUrlPreload: true`) - this option will be removed as soon as the url service is connected. You can disable the service in case you encounter a problem
- **the url service is not yet connected, we will connect the service step by step. The first version should be released to pre-catch bugs. The next version will add 503 handling if the url service is not ready and it will consume urls for resources.**
----
- the url service generates urls based on resources (posts, pages, users, tags)
- the url service keeps track of resource changes
- the url service keeps track of resource removal/insert
- the architecture:
- each routing type is represented by a url generator
- a routing type is a collection, a taxonomiy or static pages
- a queue which ensures that urls are unique and can be owned by one url generator
- the hierarchy of registration defines that
- we query knex, because bookshelf is too slow
- removed old url service files + logic
- added temp channels alternative (Channels2) -> this file will look different soon, it's for now the temporary connector to the url service. Also the name of the file is not optimal, but that is not really important right now.
