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|
module Gitlab
module GitalyClient
# This is a chokepoint that is meant to help us stop remove all places
# where production code (app, config, db, lib) touches Git repositories
# directly.
class StorageSettings
DirectPathAccessError = Class.new(StandardError)
InvalidConfigurationError = Class.new(StandardError)
INVALID_STORAGE_MESSAGE = <<~MSG.freeze
Storage is invalid because it has no `path` key.
For source installations, update your config/gitlab.yml Refer to gitlab.yml.example for an updated example.
If you're using the Gitlab Development Kit, you can update your configuration running `gdk reconfigure`.
MSG
# This class will give easily recognizable NoMethodErrors
Deprecated = Class.new
MUTEX = Mutex.new
DISK_ACCESS_DENIED_FLAG = :deny_disk_access
# If your code needs this method then your code needs to be fixed.
def self.allow_disk_access
self.disk_access_override_add(1)
yield
ensure
self.disk_access_override_add(-1)
end
def self.disk_access_override?
if RequestStore.active?
RequestStore.fetch(:gitaly_disk_access_override, 0) > 0
else
MUTEX.synchronize { @disk_access_override && @disk_access_override > 0 }
end
end
def self.disk_access_override_add(value)
if RequestStore.active?
RequestStore[:gitaly_disk_access_override] ||= 0
RequestStore[:gitaly_disk_access_override] += value
else
MUTEX.synchronize do
@disk_access_override ||= 0
@disk_access_override += value
end
end
end
def self.disk_access_denied?
!disk_access_override? && GitalyClient.feature_enabled?(DISK_ACCESS_DENIED_FLAG)
rescue
false # Err on the side of caution, don't break gitlab for people
end
def initialize(storage)
raise InvalidConfigurationError, "expected a Hash, got a #{storage.class.name}" unless storage.is_a?(Hash)
raise InvalidConfigurationError, INVALID_STORAGE_MESSAGE unless storage.has_key?('path')
# Support a nil 'path' field because some of the circuit breaker tests use it.
@legacy_disk_path = File.expand_path(storage['path'], Rails.root) if storage['path']
storage['path'] = Deprecated
@hash = storage
end
def gitaly_address
@hash.fetch(:gitaly_address)
end
def legacy_disk_path
if self.class.disk_access_denied?
raise DirectPathAccessError, "git disk access denied via the gitaly_#{DISK_ACCESS_DENIED_FLAG} feature"
end
@legacy_disk_path
end
private
def method_missing(m, *args, &block)
@hash.public_send(m, *args, &block) # rubocop:disable GitlabSecurity/PublicSend
end
end
end
end
|
