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authorwolfbeast <mcwerewolf@gmail.com>2018-06-04 13:17:38 +0200
committerwolfbeast <mcwerewolf@gmail.com>2018-06-04 13:17:38 +0200
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Issue #303 Part 1: Move basilisk files from /browser to /application/basilisk
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-=============================================
-Directory Links Architecture and Data Formats
-=============================================
-
-Directory links are enhancements to the new tab experience that combine content
-Firefox already knows about from user browsing with external content. There are
-3 kinds of links:
-
-- directory links fill in additional tiles on the new tab page if there would
- have been empty tiles because the user has a clean profile or cleared history
-- suggested links are shown if certain triggering criteria matches the user's
- browsing behavior, i.e., if the user has a top site that matches one of
- several possible sites. E.g., only show a sports suggestion if the user has a
- sport site as a top site
-- enhanced links replace a matching user's visible history tile from the same
- site but only the visual aspects: title, image, and rollover image
-
-To power the above features, DirectoryLinksProvider module downloads, at most
-once per 24 hours, the directory source links as JSON with enough data for
-Firefox to determine what should be shown or not. This module also handles
-reporting back data about the tiles via asynchronous pings that don't return
-data from the server.
-
-For the directory source and ping endpoints, the default preference values point
-to Mozilla key-pinned servers with encryption. No cookies are set by the servers
-and Firefox enforces this by making anonymous requests.
-
-- default directory source endpoint:
- https://tiles.services.mozilla.com/v3/links/fetch/%LOCALE%/%CHANNEL%
-- default directory ping endpoint: https://tiles.services.mozilla.com/v3/links/
-
-
-Preferences
-===========
-
-There are two main preferences that control downloading links and reporting
-metrics.
-
-``browser.newtabpage.directory.source``
----------------------------------------
-
-This endpoint tells Firefox where to download directory source file as a GET
-request. It should return JSON of the appropriate format containing the relevant
-links data. The value can be a data URI, e.g., an empty JSON object effectively
-turns off remote downloading: ``data:text/plain,{}``
-
-The preference value will have %LOCALE% and %CHANNEL% replaced by the
-appropriate values for the build of Firefox, e.g.,
-
-- directory source endpoint:
- https://tiles.services.mozilla.com/v3/links/fetch/en-US/release
-
-``browser.newtabpage.directory.ping``
--------------------------------------
-
-This endpoint tells Firefox where to report Tiles metrics as a POST request. The
-data is sent as a JSON blob. Setting it to empty effectively turns off reporting
-of Tiles data.
-
-A path segment will be appended to the endpoint of "view" or "click" depending
-on the type of ping, e.g.,
-
-- ``view`` ping endpoint: https://tiles.services.mozilla.com/v3/links/view
-- ``click`` ping endpoint: https://tiles.services.mozilla.com/v3/links/click
-
-
-Data Flow
-=========
-
-When Firefox starts, it checks for a cached directory source file. If one
-exists, it checks for its timestamp to determine if a new file should be
-downloaded.
-
-If a directory source file needs to be downloaded, a GET request is made then
-cacheed and unpacked the JSON into the different types of links. Various checks
-filter out invalid links, e.g., those with http-hosted images or those that
-don't fit the allowed suggestions.
-
-When a new tab page is built, DirectoryLinksProvider module provides additional
-link data that is combined with history link data to determine which links can
-be displayed or not.
-
-When a new tab page is shown, a ``view`` ping is sent with relevant tiles data.
-Similarly, when the user clicks on various parts of tiles (to load the page,
-pin, block, etc.), a ``click`` ping is sent with similar data. Both of these can
-trigger downloading of fresh directory source links if 24 hours have elapsed
-since last download.
-
-Users can turn off the ping with in-new-tab-page controls.
-
-As the new tab page is rendered, any images for tiles are downloaded if not
-already cached. The default servers hosting the images are Mozilla CDN that
-don't use cookies: https://tiles.cdn.mozilla.net/ and Firefox enforces that the
-images come from mozilla.net or data URIs when using the default directory
-source.
-
-
-Source JSON Format
-==================
-
-Firefox expects links data in a JSON object with top level keys each providing
-an array of tile objects. The keys correspond to the different types of links:
-``directory``, ``suggested``, and ``enhanced``.
-
-Example
--------
-
-Below is an example directory source file::
-
- {
- "directory": [
- {
- "bgColor": "",
- "directoryId": 498,
- "enhancedImageURI": "https://tiles.cdn.mozilla.net/images/d11ba0b3095bb19d8092cd29be9cbb9e197671ea.28088.png",
- "imageURI": "https://tiles.cdn.mozilla.net/images/1332a68badf11e3f7f69bf7364e79c0a7e2753bc.5316.png",
- "title": "Mozilla Community",
- "type": "affiliate",
- "url": "http://contribute.mozilla.org/"
- }
- ],
- "enhanced": [
- {
- "bgColor": "",
- "directoryId": 776,
- "enhancedImageURI": "https://tiles.cdn.mozilla.net/images/44a14fc405cebc299ead86514dff0e3735c8cf65.10814.png",
- "imageURI": "https://tiles.cdn.mozilla.net/images/20e24aa2219ec7542cc8cf0fd79f0c81e16ebeac.11859.png",
- "title": "TurboTax",
- "type": "sponsored",
- "url": "https://turbotax.intuit.com/"
- }
- ],
- "suggested": [
- {
- "adgroup_name": "open-source browser",
- "bgColor": "#cae1f4",
- "check_inadjacency": true,
- "directoryId": 702,
- "explanation": "Suggested for %1$S enthusiasts who visit sites like %2$S",
- "frecent_sites": [
- "addons.mozilla.org",
- "air.mozilla.org",
- "blog.mozilla.org",
- "bugzilla.mozilla.org",
- "developer.mozilla.org",
- "etherpad.mozilla.org",
- "hacks.mozilla.org",
- "hg.mozilla.org",
- "mozilla.org",
- "planet.mozilla.org",
- "quality.mozilla.org",
- "support.mozilla.org",
- "treeherder.mozilla.org",
- "wiki.mozilla.org"
- ],
- "frequency_caps": {"daily": 3, "total": 10},
- "imageURI": "https://tiles.cdn.mozilla.net/images/9ee2b265678f2775de2e4bf680df600b502e6038.3875.png",
- "time_limits": {"start": "2014-01-01T00:00:00.000Z", "end": "2014-02-01T00:00:00.000Z"},
- "title": "Thanks for testing!",
- "type": "affiliate",
- "url": "https://www.mozilla.com/firefox/tiles"
- }
- ]
- }
-
-Link Object
------------
-
-Each link object has various values that Firefox uses to display a tile:
-
-- ``url`` - string url for the page to be loaded when the tile is clicked. Only
- https and http URLs are allowed.
-- ``title`` - string that appears below the tile.
-- ``type`` - string relationship of the link to Mozilla. Expected values:
- affiliate, organic, sponsored.
-- ``imageURI`` - string url for the tile image to show. Only https and data URIs
- are allowed.
-- ``enhancedImageURI`` - string url for the image to be shown before the user
- hovers. Only https and data URIs are allowed.
-- ``bgColor`` - string css color for additional fill background color.
-- ``directoryId`` - id of the tile to be used during ping reporting
-
-Suggested Link Object Extras
-----------------------------
-
-A suggested link has additional values:
-
-- ``adgroup_name`` - string to override the hardcoded display name of the
- triggering set of sites in Firefox.
-- ``check_inadjacency`` - boolean if true prevents the suggested link from being
- shown if the new tab page is showing a site from an inadjacency list.
-- ``explanation`` - string to override the default explanation that appears
- below a Suggested Tile. %1$S is replaced by the triggering adgroup name and
- %2$S is replaced by the triggering site.
-- ``frecent_sites`` - array of strings of the sites that can trigger showing a
- Suggested Tile if the user has the site in one of the top 100 most-frecent
- pages.
-- ``frequency_caps`` - an object consisting of daily and total frequency caps
- that limit the number of times a Suggested Tile can be shown in the new tab
- per day and overall.
-- ``time_limits`` - an object consisting of start and end timestamps specifying
- when a Suggested Tile may start and has to stop showing in the newtab.
- The timestamp is expected in ISO_8601 format: '2014-01-10T20:00:00.000Z'
-
-The inadjacency list is packaged with Firefox as base64-encoded 1-way-hashed
-sites that tend to have adult, gambling, alcohol, drug, and similar content.
-Its location: chrome://browser/content/newtab/newTab.inadjacent.json
-
-The preapproved arrays follow a policy for determining what topic grouping is
-allowed as well as the composition of a grouping. The topics are broad
-uncontroversial categories, e.g., Mobile Phone, News, Technology, Video Game,
-Web Development. There are at least 5 sites within a grouping, and as many
-popular sites relevant to the topic are included to avoid having one site be
-clearly dominant. These requirements provide some deniability of which site
-actually triggered a suggestion during ping reporting, so it's more difficult to
-determine if a user has gone to a specific site.
-
-
-Ping JSON Format
-================
-
-Firefox reports back an action and the state of tiles on the new tab page based
-on the user opening a new tab or clicking a tile. The top level keys of the
-ping:
-
-- ``locale`` - string locale of the Firefox build
-- ``tiles`` - array of tiles ping objects
-
-An additional key at the top level indicates which action triggered the ping.
-The value associated to the action key is the 0-based index into the tiles array
-of which tile triggered the action. Valid actions: block, click, pin, sponsored,
-sponsored_link, unpin, view. E.g., if the second tile is being clicked, the ping
-will have ``"click": 1``
-
-Example
--------
-
-Below is an example ``click`` ping with 3 tiles: a pinned suggested tile
-followed by a history tile and a directory tile. The first tile is being
-blocked::
-
- {
- "locale": "en-US",
- "tiles": [
- {
- "id": 702,
- "pin": 1,
- "past_impressions": {"total": 5, "daily": 1},
- },
- {},
- {
- "id": 498,
- }
- ],
- "block": 0
- }
-
-Tiles Ping Object
------------------
-
-Each tile of the new tab page is reported back as part of the ping with some or
-none of the following optional values:
-
-- ``id`` - id that was provided as part of the downloaded link object (for all
- types of links: directory, suggested, enhanced); not present if the tile was
- created from user behavior, e.g., visiting pages
-- ``past_impressions`` - number of impressions (new tab "views") a suggested
- tile was shown before it was clicked, pinned or blocked. Where the "total"
- counter is the overall number of impressions accumulated prior to a click action,
- and "daily" counter is the number impressions occurred on same calendar day of
- a click. This infomration is submitted once per a suggested tile upon click,
- pin or block
-- ``pinned`` - 1 if the tile is pinned; not present otherwise
-- ``pos`` - integer position if the tile is not in the natural order, e.g., a
- pinned tile after an empty slot; not present otherwise
-- ``score`` - integer truncated score based on the tile's frecency; not present
- if 0
-- ``url`` - empty string if it's an enhanced tile; not present otherwise