@tsteur opened this Issue on August 12th 2014 Owner

In the past months we sometimes had troubles with extending the Updater / Installer.

  • For instance I had to add many hacks just to make dimensions installable via the Updater.
  • For instance it is not possible to disable a plugin or an option before calculating the queries to execute.
  • We have troubles removing files during update #5936
  • It is expensive in terms of time to check whether an update is available each time (at least for ColumnsUpdater). I am using some caching currently to reduce the time again
  • We have to run the updater twice sometimes for instance to activate the plugin in first update and to install the newly detected dimensions in the second run
  • We also should run the updater in two steps and first try to install all plugins and then perform all needed updates if the recorded component version is lower than the current used version see https://github.com/piwik/piwik/issues/9666#issuecomment-178272978
  • We always should as well check the recorded component version when deciding whether we need to perform an installation. This is a use case see https://github.com/piwik/piwik/issues/9666#issuecomment-178272978 when deleting config.ini.php and then updating Piwik. Problem is when there are not only database changes but also local changes (eg modifying piwik.js). Local changes would always need to be executed while database changes only might need to be executed when recorded component version in database is lower. Maybe we can separate those two use cases in the installer with different methods or so.
  • If someone executes all the SQL updates manually the user should still go through the updater but the already executed updates should be ignored. All other actions/updates should be still performed
  • some files are sometimes not correctly copied or caches not invalidated etc (we see this problem often in issues here)
  • The updater does not remove created option entries when a dimension or a plugin is uninstalled. See http://forum.piwik.org/read.php?2,120959 . It is currently hacked in plugin manager but this one should actually not know anything about options and version.
  • Queries executed by a plugin install are not shown in core:update dry-run
  • There are some users who execute SQL queries manually. They still have to press "Update" afterwards in the UI. There we execute all SQL queries again. Most of them will fail and ignored but some queries are executed multiple times (eg INSERT INTO etc). See #7840 . The updater should be built in mind with users who execute SQL queries manually and not insert each SQL query a second time.
  • ...

As the platform grew we simply have more and more requirements to the updater but maybe also to the installer. With the knowledge we have today we could maybe improve the code of the updater and add some more features to make updates more flexible.

@mattab commented on January 12th 2015 Owner

in https://github.com/piwik/piwik/issues/6966 a bug was reported that may be caused by the fact that during Upgrades some calls to activatePlugin may fail for example, when config file not writable. When the activatePlugin call fails in this way currently it is within a try/catch block -> it silently fails and doesn't report error to user.

Instead of silently ignoring the activatePlugin, we should WARN and explain user he should activate plugin manually. Maybe we need a new system in Updater to register commands like Plugin activation and Plugin deletion. Ideally thse commands would be also written during the dry-run so that the dry-run would indicate almost all modifications done during an update.

@mattab commented on September 18th 2017 Owner

Another issue (which is rather a "New feature" and should probably be in a separate issue) is that the upgrader should handle better the case when a plugin installation or upgrade triggers a large schema change, which times out in the browser. In some cases when the upgrade times out (or is it maybe in all cases?!), Piwik thinks that the plugin was successfully installed/upgraded although the schema changes were not fully done. This creates serious bugs such as https://github.com/piwik/plugin-MarketingCampaignsReporting/issues/13#issuecomment-330292411

There is a workaround for this issue, which is to uninstall & re-install the plugin, and run the ./console core:update in the console so it does not time out.

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