46 lines
1.7 KiB
Ruby
46 lines
1.7 KiB
Ruby
class FixUserMergeConversations < ActiveRecord::Migration
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tag :postdeploy
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def self.up
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self.transactional = false
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# remove any duplicate CP's, possibly fixing private conversation hashes
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# (which may merge it with another conversation)
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ConversationParticipant.find_by_sql(<<-SQL).
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SELECT conversation_participants.*
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FROM conversation_participants, (
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SELECT MIN(id) AS id, user_id, conversation_id
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FROM conversation_participants
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GROUP BY user_id, conversation_id
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HAVING COUNT(*) > 1
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ORDER BY conversation_id
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) cps2keep
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WHERE conversation_participants.user_id = cps2keep.user_id
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AND conversation_participants.conversation_id = cps2keep.conversation_id
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AND conversation_participants.id <> cps2keep.id
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SQL
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each do |cp|
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cp.destroy
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cp.conversation.regenerate_private_hash! if cp.private?
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end
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# there may be a bunch more private conversations with the wrong private
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# hash, and there's not a reliable way to figure out which ones those are
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# in sql alone (unless you have a sha1 method for postgres and sqlite), so
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# we just walk them all out of band and make sure they're right (this may
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# also merge some private conversations in the process)
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Conversation.connection.select_all("SELECT id FROM conversations WHERE private_hash IS NOT NULL").
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map{ |r| r["id"] }.each_slice(1000) do |ids|
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Conversation.send_later_if_production_enqueue_args(:batch_regenerate_private_hashes!, {
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:priority => Delayed::LOWER_PRIORITY,
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:max_attempts => 1,
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:strand => "regenerate_conversation_private_hashes"
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}, ids)
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end
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end
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def self.down
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raise ActiveRecord::IrreversibleMigration
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end
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end
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