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# frozen_string_literal: true
module Branches
class DivergingCommitCountsService
def initialize(repository)
@repository = repository
@cache = Gitlab::RepositoryCache.new(repository)
end
def call(branch)
if Feature.enabled?('gitaly_count_diverging_commits_no_max')
diverging_commit_counts_without_max(branch)
else
diverging_commit_counts(branch)
end
end
private
attr_reader :repository, :cache
delegate :raw_repository, to: :repository
def diverging_commit_counts(branch)
## TODO: deprecate the below code after 12.0
@root_ref_hash ||= raw_repository.commit(repository.root_ref).id
cache.fetch(:"diverging_commit_counts_#{branch.name}") do
number_commits_behind, number_commits_ahead =
repository.raw_repository.diverging_commit_count(
@root_ref_hash,
branch.dereferenced_target.sha,
max_count: Repository::MAX_DIVERGING_COUNT)
if number_commits_behind + number_commits_ahead >= Repository::MAX_DIVERGING_COUNT
{ distance: Repository::MAX_DIVERGING_COUNT }
else
{ behind: number_commits_behind, ahead: number_commits_ahead }
end
end
end
def diverging_commit_counts_without_max(branch)
@root_ref_hash ||= raw_repository.commit(repository.root_ref).id
cache.fetch(:"diverging_commit_counts_without_max_#{branch.name}") do
number_commits_behind, number_commits_ahead =
raw_repository.diverging_commit_count(
@root_ref_hash,
branch.dereferenced_target.sha)
{ behind: number_commits_behind, ahead: number_commits_ahead }
end
end
end
end
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