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|
# frozen_string_literal: true
module Gitlab
class PagesClient
class << self
attr_reader :certificate, :token
def call(service, rpc, request, timeout: nil)
kwargs = request_kwargs(timeout)
stub(service).__send__(rpc, request, kwargs) # rubocop:disable GitlabSecurity/PublicSend
end
# This function is not thread-safe. Call it from an initializer only.
def read_or_create_token
@token = read_token
rescue Errno::ENOENT
# TODO: uncomment this when omnibus knows how to write the token file for us
# https://gitlab.com/gitlab-org/omnibus-gitlab/merge_requests/2466
#
# write_token(SecureRandom.random_bytes(64))
#
# # Read from disk in case someone else won the race and wrote the file
# # before us. If this fails again let the exception bubble up.
# @token = read_token
end
# This function is not thread-safe. Call it from an initializer only.
def load_certificate
cert_path = config.certificate
return unless cert_path.present?
@certificate = File.read(cert_path)
end
def ping
request = Grpc::Health::V1::HealthCheckRequest.new
call(:health_check, :check, request, timeout: 5.seconds)
end
private
def request_kwargs(timeout)
encoded_token = Base64.strict_encode64(token.to_s)
metadata = {
'authorization' => "Bearer #{encoded_token}"
}
result = { metadata: metadata }
return result unless timeout
# Do not use `Time.now` for deadline calculation, since it
# will be affected by Timecop in some tests, but grpc's c-core
# uses system time instead of timecop's time, so tests will fail
# `Time.at(Process.clock_gettime(Process::CLOCK_REALTIME))` will
# circumvent timecop
deadline = Time.at(Process.clock_gettime(Process::CLOCK_REALTIME)) + timeout
result[:deadline] = deadline
result
end
def stub(name)
stub_class(name).new(address, grpc_creds)
end
def stub_class(name)
if name == :health_check
Grpc::Health::V1::Health::Stub
else
# TODO use pages namespace
Gitaly.const_get(name.to_s.camelcase.to_sym).const_get(:Stub)
end
end
def address
addr = config.address
addr = addr.sub(%r{^tcp://}, '') if URI(addr).scheme == 'tcp'
addr
end
def grpc_creds
if address.start_with?('unix:')
:this_channel_is_insecure
elsif @certificate
GRPC::Core::ChannelCredentials.new(@certificate)
else
# Use system certificate pool
GRPC::Core::ChannelCredentials.new
end
end
def config
Gitlab.config.pages.admin
end
def read_token
File.read(token_path)
end
def token_path
Rails.root.join('.gitlab_pages_secret').to_s
end
def write_token(new_token)
Tempfile.open(File.basename(token_path), File.dirname(token_path), encoding: 'ascii-8bit') do |f|
f.write(new_token)
f.close
File.link(f.path, token_path)
end
rescue Errno::EACCES => ex
# TODO stop rescuing this exception in GitLab 11.0 https://gitlab.com/gitlab-org/gitlab-ce/issues/45672
Rails.logger.error("Could not write pages admin token file: #{ex}") # rubocop:disable Gitlab/RailsLogger
rescue Errno::EEXIST
# Another process wrote the token file concurrently with us. Use their token, not ours.
end
end
end
end
|
