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# frozen_string_literal: true
class ReleaseHighlight
CACHE_DURATION = 1.hour
FILES_PATH = Rails.root.join('data', 'whats_new', '*.yml')
RELEASE_VERSIONS_IN_A_YEAR = 12
def self.for_version(version:)
index = self.versions.index(version)
return if index.nil?
page = index + 1
self.paginated(page: page)
end
def self.paginated(page: 1)
key = self.cache_key("items:page-#{page}")
Rails.cache.fetch(key, expires_in: CACHE_DURATION) do
items = self.load_items(page: page)
next if items.nil?
QueryResult.new(items: items, next_page: next_page(current_page: page))
end
end
def self.load_items(page:)
index = page - 1
file_path = file_paths[index]
return if file_path.nil?
file = File.read(file_path)
items = YAML.safe_load(file, permitted_classes: [Date])
platform = Gitlab.com? ? 'gitlab-com' : 'self-managed'
items&.map! do |item|
next unless item[platform]
begin
item.tap {|i| i['body'] = Kramdown::Document.new(i['body']).to_html }
rescue => e
Gitlab::ErrorTracking.track_exception(e, file_path: file_path)
next
end
end
items&.compact
rescue Psych::Exception => e
Gitlab::ErrorTracking.track_exception(e, file_path: file_path)
nil
end
def self.file_paths
@file_paths ||= Rails.cache.fetch(self.cache_key('file_paths'), expires_in: CACHE_DURATION) do
Dir.glob(FILES_PATH).sort.reverse
end
end
def self.cache_key(key)
['release_highlight', key, Gitlab.revision].join(':')
end
def self.next_page(current_page: 1)
next_page = current_page + 1
next_index = next_page - 1
next_page if self.file_paths[next_index]
end
def self.most_recent_item_count
key = self.cache_key('recent_item_count')
Gitlab::ProcessMemoryCache.cache_backend.fetch(key, expires_in: CACHE_DURATION) do
self.paginated&.items&.count
end
end
def self.versions
key = self.cache_key('versions')
Gitlab::ProcessMemoryCache.cache_backend.fetch(key, expires_in: CACHE_DURATION) do
versions = self.file_paths.first(RELEASE_VERSIONS_IN_A_YEAR).map do |path|
/\d*\_(\d*\_\d*)\.yml$/.match(path).captures[0].gsub(/0(?=\d)/, "").tr("_", ".")
end
versions.uniq
end
end
QueryResult = Struct.new(:items, :next_page, keyword_init: true) do
include Enumerable
delegate :each, to: :items
end
end
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