debian-mirror-gitlab/app/models/commit_collection.rb

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# frozen_string_literal: true
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# A collection of Commit instances for a specific container and Git reference.
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class CommitCollection
include Enumerable
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include Gitlab::Utils::StrongMemoize
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attr_reader :container, :ref, :commits
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delegate :repository, to: :container, allow_nil: true
delegate :project, to: :repository, allow_nil: true
# container - The object the commits belong to.
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# commits - The Commit instances to store.
# ref - The name of the ref (e.g. "master").
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def initialize(container, commits, ref = nil, page: nil, per_page: nil, count: nil)
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@container = container
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@commits = commits
@ref = ref
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@pagination = Gitlab::PaginationDelegate.new(page: page, per_page: per_page, count: count)
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end
def each(&block)
commits.each(&block)
end
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def committers
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emails = without_merge_commits.filter_map(&:committer_email).uniq
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User.by_any_email(emails)
end
def without_merge_commits
strong_memoize(:without_merge_commits) do
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# `#enrich!` the collection to ensure all commits contain
# the necessary parent data
enrich!.commits.reject(&:merge_commit?)
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end
end
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# Returns the collection with the latest pipeline for every commit pre-set.
#
# Setting the pipeline for each commit ahead of time removes the need for running
# a query for every commit we're displaying.
def with_latest_pipeline(ref = nil)
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return self unless project
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pipelines = project.ci_pipelines.latest_pipeline_per_commit(map(&:id), ref)
each do |commit|
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pipeline = pipelines[commit.id]
pipeline&.number_of_warnings # preload number of warnings
commit.set_latest_pipeline_for_ref(ref, pipeline)
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end
self
end
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# Returns the collection with markdown fields preloaded.
#
# Get the markdown cache from redis using pipeline to prevent n+1 requests
# when rendering the markdown of an attribute (e.g. title, full_title,
# description).
def with_markdown_cache
Commit.preload_markdown_cache!(commits)
self
end
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def unenriched
commits.reject(&:gitaly_commit?)
end
def fully_enriched?
unenriched.empty?
end
# Batch load any commits that are not backed by full gitaly data, and
# replace them in the collection.
def enrich!
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# A container is needed in order to fetch data from gitaly. Containers
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# can be absent from commits in certain rare situations (like when
# viewing a MR of a deleted fork). In these cases, assume that the
# enriched data is not needed.
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return self if container.blank? || fully_enriched?
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# Batch load full Commits from the repository
# and map to a Hash of id => Commit
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replacements = unenriched.each_with_object({}) do |c, result|
result[c.id] = Commit.lazy(container, c.id)
end.compact
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# Replace the commits, keeping the same order
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@commits = @commits.map do |original_commit|
# Return the original instance: if it didn't need to be batchloaded, it was
# already enriched.
batch_loaded_commit = replacements.fetch(original_commit.id, original_commit)
# If batch loading the commit failed, fall back to the original commit.
# We need to explicitly check `.nil?` since otherwise a `BatchLoader` instance
# that looks like `nil` is returned.
batch_loaded_commit.nil? ? original_commit : batch_loaded_commit
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end
self
end
def respond_to_missing?(message, inc_private = false)
commits.respond_to?(message, inc_private)
end
# rubocop:disable GitlabSecurity/PublicSend
def method_missing(message, *args, &block)
commits.public_send(message, *args, &block)
end
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def next_page
@pagination.next_page
end
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def load_tags
oids = commits.map(&:id)
references = repository.list_refs([Gitlab::Git::TAG_REF_PREFIX], pointing_at_oids: oids, peel_tags: true)
oid_to_references = references.group_by { |reference| reference.peeled_target.presence || reference.target }
return self if oid_to_references.empty?
commits.each do |commit|
grouped_references = oid_to_references[commit.id]
next unless grouped_references
commit.referenced_by = grouped_references.map(&:name)
end
self
end
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end