62 lines
1.8 KiB
Ruby
62 lines
1.8 KiB
Ruby
class BulkRevert
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BIG_QUERY_LIMIT = 5_000
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attr_reader :constraints
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class ConstraintTooGeneralError < Exception ; end
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def process
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ModAction.log("#{CurrentUser.name} processed bulk revert for #{constraints.inspect}")
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find_post_versions.order("updated_at, id").each do |version|
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version.undo!
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end
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end
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def initialize(constraints)
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@constraints = constraints
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end
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def preview
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@_preview ||= find_post_versions
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end
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def query_gbq(user_id, added_tags, removed_tags, min_version_id, max_version_id)
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GoogleBigQuery::PostVersion.new.find(user_id, added_tags, removed_tags, min_version_id, max_version_id, BIG_QUERY_LIMIT)
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end
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def find_post_versions
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q = PostArchive.where("true")
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if constraints[:user_name]
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constraints[:user_id] = User.find_by_name(constraints[:user_name]).try(:id)
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end
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if constraints[:user_id]
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q = q.where("post_versions.updater_id = ?", constraints[:user_id])
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end
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if constraints[:added_tags] || constraints[:removed_tags]
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hash = CityHash.hash64("#{constraints[:added_tags]} #{constraints{removed_tags}} #{constraints[:min_version_id]} #{constraints[:max_version_id]}").to_s(36)
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sub_ids = Cache.get("br/fpv/#{hash}", 300) do
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query_gbq(constraints[:user_id], constraints[:added_tags], constraints[:removed_tags], constraints[:min_version_id], constraints[:max_version_id])
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end
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if sub_ids.size >= BIG_QUERY_LIMIT
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raise ConstraintTooGeneralError.new
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end
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q = q.where("post_versions.id in (?)", sub_ids)
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end
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if constraints[:min_version_id].present?
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q = q.where("post_versions.id >= ?", constraints[:min_version_id])
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end
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if constraints[:max_version_id].present?
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q = q.where("post_versions.id <= ?", constraints[:max_version_id])
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end
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q
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end
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end
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