debian-mirror-gitlab/lib/quality/helm_client.rb

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# frozen_string_literal: true
require 'time'
require_relative '../gitlab/popen' unless defined?(Gitlab::Popen)
module Quality
class HelmClient
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CommandFailedError = Class.new(StandardError)
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attr_reader :namespace
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RELEASE_JSON_ATTRIBUTES = %w[Name Revision Updated Status Chart AppVersion Namespace].freeze
Release = Struct.new(:name, :revision, :last_update, :status, :chart, :app_version, :namespace) do
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def revision
@revision ||= self[:revision].to_i
end
def last_update
@last_update ||= Time.parse(self[:last_update])
end
end
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# A single page of data and the corresponding page number.
Page = Struct.new(:releases, :number)
def initialize(namespace:)
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@namespace = namespace
end
def releases(args: [])
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each_release(args)
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end
def delete(release_name:)
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run_command([
'delete',
%(--tiller-namespace "#{namespace}"),
'--purge',
release_name
])
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end
private
def run_command(command)
final_command = ['helm', *command].join(' ')
puts "Running command: `#{final_command}`" # rubocop:disable Rails/Output
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result = Gitlab::Popen.popen_with_detail([final_command])
if result.status.success?
result.stdout.chomp.freeze
else
raise CommandFailedError, "The `#{final_command}` command failed (status: #{result.status}) with the following error:\n#{result.stderr}"
end
end
def raw_releases(args = [])
command = [
'list',
%(--namespace "#{namespace}"),
%(--tiller-namespace "#{namespace}" --output json),
*args
]
json = JSON.parse(run_command(command))
releases = json['Releases'].map do |json_release|
Release.new(*json_release.values_at(*RELEASE_JSON_ATTRIBUTES))
end
[releases, json['Next']]
rescue JSON::ParserError => ex
puts "Ignoring this JSON parsing error: #{ex}" # rubocop:disable Rails/Output
[[], nil]
end
# Fetches data from Helm and yields a Page object for every page
# of data, without loading all of them into memory.
#
# method - The Octokit method to use for getting the data.
# args - Arguments to pass to the `helm list` command.
def each_releases_page(args, &block)
return to_enum(__method__, args) unless block_given?
page = 1
offset = ''
loop do
final_args = args.dup
final_args << "--offset #{offset}" unless offset.to_s.empty?
collection, offset = raw_releases(final_args)
yield Page.new(collection, page += 1)
break if offset.to_s.empty?
end
end
# Iterates over all of the releases.
#
# args - Any arguments to pass to the `helm list` command.
def each_release(args, &block)
return to_enum(__method__, args) unless block_given?
each_releases_page(args) do |page|
page.releases.each do |release|
yield release
end
end
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end
end
end