Some helpers and examples to use during migrations.

They are mostly meant to copy & paste the code from here to your own packages.

This was written for the talk "Migrations! Migrations! Migrations!" at Plone Conference 2019 in Ferrara: https://2019.ploneconf.org/talks/migrations-migrations-migrations

Here is a list of methods this package contains:

statistics.py -------------

Browser-Views to get information about the portal:

migrations_stats

Get info about the content is in the portal

migrations_contentsize

How many MB of which content is there really?

migrations_obsoleteinfo

Get info about content types that may needs to be replaced

migrations_localroles

Export info about local roles. An alternative would be zopyx.plone.cassandra

prepare.py ----------

Prepare the portal for a migration

disable_solr

Disable solr

disable_ldap

Disable ldap/ad-plugins

disable_caching

Disable caching and purging

enable_caching

Enable caching and purging again after migration

disable_fingerpointing

Disable the fingerpointing plugin

enable_fingerpointing

Enable the fingerpointing plugin again after migration

remove_overrides

Remove any portal_skin an portal_view_customization overrides

release_all_webdav_locks

Release all WebDAV Locks

cleanup.py ----------

Remove obsolete content and settings

delete_items_larger_than_1mb

Deletes heavy content

remove_all_revisions

Clear out portal_historiesstorage

disable_theme

Disable diazo theme, enable sunburst (useful for Plone 4)

trim_content

Remove 95% of all content leaving at least one item for each type. Keep all folderish items unless specified.

addons.py ---------

Remove addons

remove_ploneformgen

Example that removes Products.PloneFormGen

remove_plonekeywordmanager

Example that removes Products.PloneKeywordManager

remove_solgema_fullcalendar

Example that removes Solgema.fullcalendar

remove_multiple_addons

Example that removes a cubic ton of addons

cleanup_behaviors

Remove obsolete behaviors

remove_vocabularies

Example that removes p4a.subtyper utilities

persistent.py -------------

Some examples that remove various adapters, subscriber and utilities. For example:

remove_utility:

Remove an interface from all utility and adapter registrations. There are several places where an interface like IKSSRegistry can have lodged itself. We need to find them all, otherwise you are not even able to see the ZMI when going to Plone 5.2.

_unregisterUtility

Example that removes p4a.subtyper utilities (used in collective.easyslideshow)

remove_kss

Example that removes portal_kss and removes IKSSRegistry from four places in the site manager.

See also:

• Use alias_module (see patches.py)
• profiles/migration/componentregistry.xml
• wildcard.fixpersistentutilities

import_steps.py ---------------

Remove broken and outdated import/export steps

linguaplone.py --------------

Examples that can help migrating from LinguaPlone to plone.app.multilingual

cleanup_content_for_pam

Crazy method that sets languages, adds and links translations so that we can migrate to pam.

install_pam

Install pam and setup site

migrate_to_pam

Migrate LinguaPlone to plone.app.multilingual This mostly uses the migration that is builtin in plone.app.multilingual

dexterity.py ------------

Methods to migrate default content to Dexterity.

custom_dx_migration.py ----------------------

A example that migrated PloneHelpCenter to default Dexterity content.

migrate_helpcenter_to_dx

Run the whole miration

change_phc_layouts

Remove custom layout

appending_richtext_migrator

Example custom field-migrator that appends text to a existing richtext-field

appending_text_migrator

Example custom field-migrator that appends text to a existing text-field

migrate_helpcenter_xxx

Some Methods that migrate the various types in PHC

archetypes.py -------------

remove_archetypes

Uninstall Archetypes and remove all of its traces.

patches.py ----------

Multiple examples of patches using alias_module to deal with migration-problems.

images.py ---------

fix_at_image_scales

Fix/Migrate custom images/scales and broken links to AT-based images. This only finds content with the rich text behavior, so not all rich text fields

post_python3_fixes.py ---------------------

fix_event_indexes

Metadata on brains is still old DateTime

fix_searchable_text

Fix bytes in opkapiindex

fix_portlets

Fix portlets that use a ComputedValue for path-storage instead of a UUID

fix_discussions

Fix conversations that still have the old AT content as __parent__

fix_registry

Remove registry-records where the interface is no longer there

rebuild_relations

Exports all valid reations from the relation-catalog, purges the relation-catalog (and the intid-catalog) and restores all valid relations. Uses collective.relationhelpers

export_relations

Export all relations as a json file all_relations.json in you buildout directory. Uses collective.relationhelpers

restore_relations

Recreate relations from a annotation on the portal or a list of dicts (e.g. restored from the json-file created by export_relations). This works fine for all kinds of relations, RelationList- or RelationChoice-fields (including the default field "Related Items") as well as for linkintegrity-relations and relations between working-copies. Uses collective.relationhelpers

cleanup_intids

Purge all RelationValues and all references to broken objects from the IntId catalog. Uses collective.relationhelpers

finalize.py -----------

Example method for final touces after migrating to 5.2 with py3

utils.py --------

disable_subscriber

Disable a subscriber

enable_subscriber

Re-enable a subscriber

disable_content_rules

Disable all content rules

enable_content_rules

Re-enable all content rules

example_with_disabled_subscriber

Example to use the above

rebuild_catalog_without_indexing_blobs

Rebuild the whole catalog but skip reindexing blobs since that takes a long time.

pack_database

Pack the database

Example of a profile that removes all kinds of stuff that was added with Generic Setup.

Bonus: Fixes modal for login.

Example for some maybe sensible registry-settings for migrated sites.

This is mostly meant to copy&paste the code from here to your own packages.

Installation is still possible: To install it add it to your buildout:

[buildout]

...

eggs =
    collective.migrationhelpers

and then running bin/buildout

• Issue Tracker: https://github.com/collective/collective.migrationhelpers/issues
• Source Code: https://github.com/collective/collective.migrationhelpers

The project is licensed under the GPLv2.