Reviews/B2G/AppUpdates: Difference between revisions

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Revision as of 10:37, 8 January 2013

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Ptheriault

canmove, Confirmed users

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 ==Data Flow Enumeration==
-Inside Gecko, Apps are represented by a [http://mxr.mozilla.org/mozilla-central/source/dom/interfaces/apps/nsIDOMApplicationRegistry.idl mozIDOMApplication] object, which has a [http://mxr.mozilla.org/mozilla-central/source/dom/apps/src/Webapps.js#396 checkForUpdate]() function.
+Inside Gecko, Apps are represented by a [http://mxr.mozilla.org/mozilla-central/source/dom/interfaces/apps/nsIDOMApplicationRegistry.idl mozIDOMApplication] object, which has a [http://mxr.mozilla.org/mozilla-central/source/dom/apps/src/Webapps.js#396 checkForUpdate]() function. Apps can request to check for an update to themselves, or the system app also checks for app updates as part of a global update check (by setting the gaia.system.checkForUpdates setting to true, which is picked up by update_manager.js)
+===Check for App Update===
+Either way, the process to check for an update to an individual app is as follows:
+# Check each app to see if there is an available update
+# If there is an update for an app, the process depends on whether the app is packaged/hosted or removable/non removable:
+#Non-removable Packaged Apps (http://mxr.mozilla.org/mozilla-central/source/dom/apps/src/Webapps.jsm#1225)
+## No updated as part of webapps process - these are updated with a system update process
+#Non-removable Hosted Apps (http://mxr.mozilla.org/mozilla-central/source/dom/apps/src/Webapps.jsm#1230 onwards)
+## Just check if new app cache manifest is available
+## If so, do async download of manifest contents
+#Removable Packaged Apps (http://mxr.mozilla.org/mozilla-central/source/dom/apps/src/Webapps.jsm#1122)
+## Send a 'Webapps:CheckForUpdate:Return:OK' event (from webapps.jsm)
+## Set properties of the update on the app object, then fire a downloadavailable event
+## Event caught in system app (updatable.js) which adds itself updates queue in update manager (UpdateManager.js)
+#Removable Hosted Apps (http://mxr.mozilla.org/mozilla-central/source/dom/apps/src/Webapps.jsm#1149)
+## Update web apps registratation (system messages & web activities)
+##  Store the new manifest
+## Update the webapps registry
+## If not updatable then 5 else 6.
+##   Send Webapps:CheckForUpdate:Return:OK messageto fire adownloadapplied event, go to 7.
+##  Start app cache update (nsOfflineCacheUpdateService::CheckForUpdate)
+## Observer for this update sends Webapps:CheckForUpdate:Return:OK, when check has been done.
+## Event caught in system app (updatable.js) which adds itself updates queue in update manager (UpdateManager.js)
+===Download App Update===
@@ Line 28: / Line 55: @@
 ==Links==
-* https://wiki.mozilla.org/DevTools/Features/ResponsiveView
+*
-* https://bugzilla.mozilla.org/show_bug.cgi?id=755953 - sec review
-* https://bugzilla.mozilla.org/show_bug.cgi?id=749628 - dev
-* https://bugzilla.mozilla.org/show_bug.cgi?id=751910 - ui review
-* https://bug749628.bugzilla.mozilla.org/attachment.cgi?id=619038 - screenshot
 [[Category:SecReview]]