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class MigrateSubscriptionsProjectId < ActiveRecord::Migration
include Gitlab::Database::MigrationHelpers
DOWNTIME = true
DOWNTIME_REASON = 'Subscriptions will not work as expected until this migration is complete.'
def up
if Gitlab::Database.mysql?
execute <<-EOF.strip_heredoc
UPDATE subscriptions
INNER JOIN issues ON issues.id = subscriptions.subscribable_id AND subscriptions.subscribable_type = 'Issue'
SET subscriptions.project_id = issues.project_id;
EOF
execute <<-EOF.strip_heredoc
UPDATE subscriptions
INNER JOIN merge_requests ON merge_requests.id = subscriptions.subscribable_id AND subscriptions.subscribable_type = 'MergeRequest'
SET subscriptions.project_id = merge_requests.target_project_id;
EOF
execute <<-EOF.strip_heredoc
UPDATE subscriptions
INNER JOIN labels ON labels.id = subscriptions.subscribable_id AND subscriptions.subscribable_type = 'Label'
INNER JOIN projects ON projects.id = labels.project_id
SET subscriptions.project_id = projects.id;
EOF
else
execute <<-EOF.strip_heredoc
UPDATE subscriptions
SET project_id = issues.project_id
FROM issues
WHERE issues.id = subscriptions.subscribable_id
AND subscriptions.subscribable_type = 'Issue';
EOF
execute <<-EOF.strip_heredoc
UPDATE subscriptions
SET project_id = merge_requests.target_project_id
FROM merge_requests
WHERE merge_requests.id = subscriptions.subscribable_id
AND subscriptions.subscribable_type = 'MergeRequest';
EOF
execute <<-EOF.strip_heredoc
UPDATE subscriptions
SET project_id = projects.id
FROM labels INNER JOIN projects ON projects.id = labels.project_id
WHERE labels.id = subscriptions.subscribable_id
AND subscriptions.subscribable_type = 'Label';
EOF
end
end
def down
execute <<-EOF.strip_heredoc
UPDATE subscriptions SET project_id = NULL;
EOF
end
end
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