Removed comment-migration view.

This did not work anymore on Plone 5.  If you still need to migrate
from old-style comments, so from Plone 4.0 or earlier, please upgrade
to Plone 4.3 first.

CHANGES.rst

@@ -21,6 +21,10 @@ Bug fixes:
   user to fill in the form without validation error.  Or when in the
   control panel the field is set as not required anymore, that change
   would have no effect until the instance was restarted.  [maurits]
+- Removed ``comment-migration`` view.  This did not work anymore on
+  Plone 5.  If you still need to migrate from old-style comments, so
+  from Plone 4.0 or earlier, please upgrade to Plone 4.3 first.
+  [maurits]
 
 
 2.4.14 (2016-06-06)

plone/app/discussion/browser/configure.zcml

@@ -11,15 +11,6 @@
     <!-- Traversal adapter -->
     <adapter factory=".traversal.ConversationNamespace" name="conversation" />
 
-    <!-- Migration view -->
-    <browser:page
-        for="Products.CMFCore.interfaces.ISiteRoot"
-        name="comment-migration"
-        layer="..interfaces.IDiscussionLayer"
-        class=".migration.View"
-        permission="cmf.ManagePortal"
-        />
-
     <!-- Moderation view -->
     <browser:page
         for="Products.CMFCore.interfaces.ISiteRoot"

plone/app/discussion/browser/controlpanel.pt

@@ -49,25 +49,6 @@
         </span>
     </div>
 
-    <div class="portalMessage warning"
-        tal:condition="view/unmigrated_comments_warning">
-        <strong i18n:translate="">
-            Warning
-        </strong>
-        <span tal:omit-tag="" i18n:translate="text_unmigrated_comments">
-            You have comments that have not been migrated to the new
-            commenting system that has been introduced in Plone 4.1.
-            Please
-            <tal:link i18n:name="label_comments_migration_link">
-                <a href=""
-                   i18n:translate="text_comments_migration_link"
-                   tal:attributes="href string:${view/site_url}/@@comment-migration"
-                >migrate your comments</a>
-            </tal:link>
-            to fix this.
-        </span>
-    </div>
-
     <div metal:use-macro="context/global_statusmessage/macros/portal_message">
       Portal status message
     </div>

plone/app/discussion/browser/controlpanel.py

@@ -6,7 +6,6 @@ from plone.app.discussion.upgrades import update_registry
 from plone.app.registry.browser import controlpanel
 from plone.registry.interfaces import IRecordModifiedEvent
 from plone.registry.interfaces import IRegistry
-from Products.CMFCore.interfaces._content import IDiscussionResponse
 from Products.CMFCore.utils import getToolByName
 from Products.CMFPlone.interfaces.controlpanel import IMailSchema
 from Products.Five.browser.pagetemplatefile import ViewPageTemplateFile
@@ -182,15 +181,6 @@ class DiscussionSettingsControlPanel(controlpanel.ControlPanelFormWrapper):
             return
         return True
 
-    def unmigrated_comments_warning(self):
-        """Returns true if site contains unmigrated comments.
-        """
-        catalog = getToolByName(self.context, 'portal_catalog', None)
-        count_comments_old = catalog.searchResults(
-            object_provides=IDiscussionResponse.__identifier__)
-        if count_comments_old:
-            return True
-
 
 def notify_configuration_changed(event):
     """Event subscriber that is called every time the configuration changed.

plone/app/discussion/browser/migration.py

@@ -1,283 +0,0 @@
-# -*- coding: utf-8 -*-
-from Acquisition import aq_inner
-from Acquisition import aq_parent
-from datetime import datetime
-from DateTime import DateTime
-from plone.app.discussion.comment import CommentFactory
-from plone.app.discussion.interfaces import IComment
-from plone.app.discussion.interfaces import IConversation
-from plone.app.discussion.interfaces import IReplies
-from Products.CMFCore.interfaces._content import IDiscussionResponse
-from Products.CMFCore.utils import getToolByName
-from Products.Five.browser import BrowserView
-from types import TupleType
-
-import transaction
-
-
-def DT2dt(DT):
-    """Convert a Zope DateTime (with timezone) into a Python datetime (GMT)."""
-    DT = DT.toZone('GMT')
-    return datetime(
-        DT.year(),
-        DT.month(),
-        DT.day(),
-        DT.hour(),
-        DT.minute(),
-        int(DT.second()))
-
-
-class View(BrowserView):
-    """Migration View
-    """
-
-    def __call__(self, filter_callback=None):
-
-        context = aq_inner(self.context)
-        out = []
-        self.total_comments_migrated = 0
-        self.total_comments_deleted = 0
-
-        dry_run = 'dry_run' in self.request
-
-        # This is for testing only.
-        # Do not use transactions during a test.
-        test = 'test' in self.request
-
-        if not test:
-            transaction.begin()  # pragma: no cover
-
-        catalog = getToolByName(context, 'portal_catalog')
-
-        def log(msg):
-            # encode string before sending it to external world
-            if isinstance(msg, unicode):
-                msg = msg.encode('utf-8')  # pragma: no cover
-            context.plone_log(msg)
-            out.append(msg)
-
-        def migrate_replies(context, in_reply_to, replies,
-                            depth=0, just_delete=0):
-            # Recursive function to migrate all direct replies
-            # of a comment. Returns True if there are no replies to
-            # this comment left, and therefore the comment can be removed.
-            if len(replies) == 0:
-                return True
-
-            workflow = context.portal_workflow
-            oldchain = workflow.getChainForPortalType('Discussion Item')
-            new_workflow = workflow.comment_review_workflow
-            mt = getToolByName(self.context, 'portal_membership')
-
-            if type(oldchain) == TupleType and len(oldchain) > 0:
-                oldchain = oldchain[0]
-
-            for reply in replies:
-                # log
-                indent = '  '
-                for i in range(depth):
-                    indent += '  '
-                log('{0}migrate_reply: "{1}".'.format(indent, reply.title))
-
-                should_migrate = True
-                if filter_callback and not filter_callback(reply):
-                    should_migrate = False
-                if just_delete:
-                    should_migrate = False
-
-                new_in_reply_to = None
-                if should_migrate:
-                    # create a reply object
-                    comment = CommentFactory()
-                    comment.title = reply.Title()
-                    comment.text = reply.cooked_text
-                    comment.mime_type = 'text/html'
-                    comment.creator = reply.Creator()
-
-                    try:
-                        comment.author_username = reply.author_username
-                    except AttributeError:
-                        comment.author_username = reply.Creator()
-
-                    member = mt.getMemberById(comment.author_username)
-                    if member:
-                        comment.author_name = member.fullname
-
-                    if not comment.author_name:
-                        # In migrated site member.fullname = ''
-                        # while member.getProperty('fullname') has the
-                        # correct value
-                        if member:
-                            comment.author_name = member.getProperty(
-                                'fullname'
-                            )
-                        else:
-                            comment.author_name = comment.author_username
-
-                    try:
-                        comment.author_email = reply.email
-                    except AttributeError:
-                        comment.author_email = None
-
-                    comment.creation_date = DT2dt(reply.creation_date)
-                    comment.modification_date = DT2dt(reply.modification_date)
-
-                    comment.reply_to = in_reply_to
-
-                    if in_reply_to == 0:
-                        # Direct reply to a content object
-                        new_in_reply_to = conversation.addComment(comment)
-                    else:
-                        # Reply to another comment
-                        comment_to_reply_to = conversation.get(in_reply_to)
-                        replies = IReplies(comment_to_reply_to)
-                        new_in_reply_to = replies.addComment(comment)
-
-                    # migrate the review state
-                    old_status = workflow.getStatusOf(oldchain, reply)
-                    new_status = {
-                        'action': None,
-                        'actor': None,
-                        'comment': 'Migrated workflow state',
-                        'review_state': old_status and old_status.get(
-                            'review_state',
-                            new_workflow.initial_state
-                        ) or 'published',
-                        'time': DateTime()
-                    }
-                    workflow.setStatusOf('comment_review_workflow',
-                                         comment,
-                                         new_status)
-
-                    auto_transition = new_workflow._findAutomaticTransition(
-                        comment,
-                        new_workflow._getWorkflowStateOf(comment))
-                    if auto_transition is not None:
-                        new_workflow._changeStateOf(comment, auto_transition)
-                    else:
-                        new_workflow.updateRoleMappingsFor(comment)
-                    comment.reindexObject(idxs=['allowedRolesAndUsers',
-                                                'review_state'])
-
-                self.total_comments_migrated += 1
-
-                # migrate all talkbacks of the reply
-                talkback = getattr(reply, 'talkback', None)
-                no_replies_left = migrate_replies(
-                    context,
-                    new_in_reply_to,
-                    talkback.getReplies(),
-                    depth=depth + 1,
-                    just_delete=not should_migrate)
-
-                if no_replies_left:
-                    # remove reply and talkback
-                    talkback.deleteReply(reply.id)
-                    obj = aq_parent(talkback)
-                    obj.talkback = None
-                    log('{0}remove {1}'.format(indent, reply.id))
-                    self.total_comments_deleted += 1
-
-            # Return True when all comments on a certain level have been
-            # migrated.
-            return True
-
-        # Find content
-        brains = catalog.searchResults(
-            object_provides='Products.CMFCore.interfaces._content.IContentish')
-        log('Found {0} content objects.'.format(len(brains)))
-
-        count_discussion_items = len(
-            catalog.searchResults(Type='Discussion Item')
-        )
-        count_comments_pad = len(
-            catalog.searchResults(object_provides=IComment.__identifier__)
-        )
-        count_comments_old = len(
-            catalog.searchResults(
-                object_provides=IDiscussionResponse.__identifier__
-            )
-        )
-
-        log(
-            'Found {0} Discussion Item objects.'.format(
-                count_discussion_items
-            )
-        )
-        log('Found {0} old discussion items.'.format(count_comments_old))
-        log(
-            'Found {0} plone.app.discussion comments.'.format(
-                count_comments_pad
-            )
-        )
-
-        log('\n')
-        log('Start comment migration.')
-
-        # This loop is necessary to get all contentish objects, but not
-        # the Discussion Items. This wouldn't be necessary if the
-        # zcatalog would support NOT expressions.
-        new_brains = []
-        for brain in brains:
-            if brain.portal_type != 'Discussion Item':
-                new_brains.append(brain)
-
-        # Recursively run through the comment tree and migrate all comments.
-        for brain in new_brains:
-            obj = brain.getObject()
-            talkback = getattr(obj, 'talkback', None)
-            if talkback:
-                replies = talkback.getReplies()
-                if replies:
-                    conversation = IConversation(obj)
-                log('\n')
-                log(
-                    'Migrate "{0}" ({1})'.format(
-                        obj.Title(),
-                        obj.absolute_url(relative=1)
-                    )
-                )
-                migrate_replies(context, 0, replies)
-                obj = aq_parent(talkback)
-                obj.talkback = None
-
-        if self.total_comments_deleted != self.total_comments_migrated:
-            log(
-                'Something went wrong during migration. The number of '
-                'migrated comments ({0}) differs from the number of deleted '
-                'comments ({1}).'.format(
-                    self.total_comments_migrated,
-                    self.total_comments_deleted
-                )
-            )
-            if not test:  # pragma: no cover
-                transaction.abort()  # pragma: no cover
-            log('Abort transaction')  # pragma: no cover
-
-        log('\n')
-        log('Comment migration finished.')
-        log('\n')
-
-        log(
-            '{0} of {1} comments migrated.'.format(
-                self.total_comments_migrated,
-                count_comments_old
-            )
-        )
-
-        if self.total_comments_migrated != count_comments_old:
-            log(
-                '{0} comments could not be migrated.'.format(
-                    count_comments_old - self.total_comments_migrated
-                )
-            )  # pragma: no cover
-            log('Please make sure your ' +
-                'portal catalog is up-to-date.')  # pragma: no cover
-
-        if dry_run and not test:
-            transaction.abort()  # pragma: no cover
-            log('Dry run')  # pragma: no cover
-            log('Abort transaction')  # pragma: no cover
-        if not test:
-            transaction.commit()  # pragma: no cover
-        return '\n'.join(out)