debian-mirror-gitlab/lib/gitlab/verify/batch_verifier.rb

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# frozen_string_literal: true
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module Gitlab
module Verify
class BatchVerifier
attr_reader :batch_size, :start, :finish
def initialize(batch_size:, start: nil, finish: nil)
@batch_size = batch_size
@start = start
@finish = finish
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fix_google_api_logger
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end
# Yields a Range of IDs and a Hash of failed verifications (object => error)
def run_batches(&blk)
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all_relation.in_batches(of: batch_size, start: start, finish: finish) do |batch| # rubocop: disable Cop/InBatches
range = batch.first.id..batch.last.id
failures = run_batch_for(batch)
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yield(range, failures)
end
end
def name
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raise NotImplementedError
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end
def describe(_object)
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raise NotImplementedError
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end
private
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def run_batch_for(batch)
batch.map { |upload| verify(upload) }.compact.to_h
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end
def verify(object)
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local?(object) ? verify_local(object) : verify_remote(object)
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rescue StandardError => err
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failure(object, err.inspect)
end
def verify_local(object)
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expected = expected_checksum(object)
actual = actual_checksum(object)
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return failure(object, 'Checksum missing') unless expected.present?
return failure(object, 'Checksum mismatch') unless expected == actual
success
end
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# We don't calculate checksum for remote objects, so just check existence
def verify_remote(object)
return failure(object, 'Remote object does not exist') unless remote_object_exists?(object)
success
end
def success
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nil
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end
def failure(object, message)
[object, message]
end
# It's already set to Logger::INFO, but acts as if it is set to
# Logger::DEBUG, and this fixes it...
def fix_google_api_logger
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require 'google/apis'
Google::Apis.logger.level = Logger::INFO
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end
# This should return an ActiveRecord::Relation suitable for calling #in_batches on
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def all_relation
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raise NotImplementedError
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end
# Should return true if the object is stored locally
def local?(_object)
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raise NotImplementedError
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end
# The checksum we expect the object to have
def expected_checksum(_object)
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raise NotImplementedError
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end
# The freshly-recalculated checksum of the object
def actual_checksum(_object)
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raise NotImplementedError
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end
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# Be sure to perform a hard check of the remote object (don't just check DB value)
def remote_object_exists?(object)
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raise NotImplementedError
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end
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end
end
end