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# frozen_string_literal: true
module Gitlab
module BackgroundMigration
# A job to nullify duplicate token values in ci_runners table in batches
class ResetDuplicateCiRunnersTokenValues < BatchedMigrationJob
operation_name :nullify_duplicate_ci_runner_token_values
feature_category :database
def perform
each_sub_batch do |sub_batch|
# Reset duplicate runner tokens that would prevent creating an unique index.
nullify_duplicate_ci_runner_token_values(sub_batch)
end
end
private
def nullify_duplicate_ci_runner_token_values(sub_batch)
batchable_model = define_batchable_model(batch_table, connection: connection)
duplicate_tokens = batchable_model
.where(token: sub_batch.select(:token).distinct)
.group(:token)
.having('COUNT(*) > 1')
.pluck(:token)
batchable_model.where(token: duplicate_tokens).update_all(token: nil) if duplicate_tokens.any?
end
end
end
end
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