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# frozen_string_literal: true
module Clusters
module Gcp
module Kubernetes
class FetchKubernetesTokenService
attr_reader :api_url, :ca_pem, :username, :password
def initialize(api_url, ca_pem, username, password)
@api_url = api_url
@ca_pem = ca_pem
@username = username
@password = password
end
def execute
read_secrets.each do |secret|
name = secret.dig('metadata', 'name')
if /default-token/ =~ name
token_base64 = secret.dig('data', 'token')
return Base64.decode64(token_base64) if token_base64
end
end
nil
end
private
def read_secrets
kubeclient = build_kubeclient!
kubeclient.get_secrets.as_json
rescue Kubeclient::HttpError => err
raise err unless err.error_code == 404
[]
end
def build_kubeclient!(api_path: 'api', api_version: 'v1')
raise "Incomplete settings" unless api_url && username && password
::Kubeclient::Client.new(
join_api_url(api_path),
api_version,
auth_options: { username: username, password: password },
ssl_options: kubeclient_ssl_options,
http_proxy_uri: ENV['http_proxy']
)
end
def join_api_url(api_path)
url = URI.parse(api_url)
prefix = url.path.sub(%r{/+\z}, '')
url.path = [prefix, api_path].join("/")
url.to_s
end
def kubeclient_ssl_options
opts = { verify_ssl: OpenSSL::SSL::VERIFY_PEER }
if ca_pem.present?
opts[:cert_store] = OpenSSL::X509::Store.new
opts[:cert_store].add_cert(OpenSSL::X509::Certificate.new(ca_pem))
end
opts
end
end
end
end
end
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