34 lines
1 KiB
Ruby
34 lines
1 KiB
Ruby
class VirusScannerJob < ApplicationJob
|
|
# If by the time the job runs the blob has been deleted, ignore the error
|
|
discard_on ActiveRecord::RecordNotFound
|
|
# If the file is deleted during the scan, ignore the error
|
|
discard_on ActiveStorage::FileNotFoundError
|
|
# If for some reason the file appears invalid, retry for a while
|
|
retry_on(ActiveStorage::IntegrityError, attempts: 5, wait: 5.seconds) do |job, _error|
|
|
blob = job.arguments.first
|
|
|
|
metadata = {
|
|
virus_scan_result: ActiveStorage::VirusScanner::INTEGRITY_ERROR,
|
|
scanned_at: Time.zone.now
|
|
}
|
|
|
|
merge_and_update_metadata(blob, metadata)
|
|
end
|
|
|
|
def perform(blob)
|
|
if blob.virus_scanner.done? then return end
|
|
|
|
metadata = extract_metadata_via_virus_scanner(blob)
|
|
VirusScannerJob.merge_and_update_metadata(blob, metadata)
|
|
end
|
|
|
|
def extract_metadata_via_virus_scanner(blob)
|
|
ActiveStorage::VirusScanner.new(blob).metadata
|
|
end
|
|
|
|
private
|
|
|
|
def self.merge_and_update_metadata(blob, metadata)
|
|
blob.update!(metadata: blob.metadata.merge(metadata))
|
|
end
|
|
end
|