rosbridge_library::internal::ros_loader Namespace Reference

Classes
class	InvalidClassException
class	InvalidModuleException
class	InvalidPackageException
class	InvalidTypeStringException
Functions
def	_add_to_cache
def	_get_class
def	_get_from_cache
def	_get_msg_class
def	_get_srv_class
def	_load_class
def	_splittype
def	get_message_class
def	get_message_instance
def	get_service_class
def	get_service_instance
def	get_service_request_instance
def	get_service_response_instance
Variables
dictionary	_loaded_msgs = {}
dictionary	_loaded_srvs = {}
tuple	_manifest_lock = Lock()
tuple	_msgs_lock = Lock()
tuple	_srvs_lock = Lock()

---

Function Documentation

def rosbridge_library.internal.ros_loader._add_to_cache	(		cache,
			lock,
			key,
			value
	)		[private]

Definition at line 212 of file ros_loader.py.

def rosbridge_library.internal.ros_loader._get_class	(		typestring,
			subname,
			cache,
			lock
	)		[private]

If not loaded, loads the specified class then returns an instance
of it.

Loaded classes are cached in the provided cache dict

Throws various exceptions if loading the msg class fails 

Definition at line 140 of file ros_loader.py.

def rosbridge_library.internal.ros_loader._get_from_cache	(		cache,
			lock,
			key
	)		[private]

Returns the value for the specified key from the cache.
Locks the lock before doing anything. Returns None if key not in cache 

Definition at line 218 of file ros_loader.py.

def rosbridge_library.internal.ros_loader._get_msg_class

(

typestring

)

[private]

If not loaded, loads the specified msg class then returns an instance
of it

Throws various exceptions if loading the msg class fails 

Definition at line 122 of file ros_loader.py.

def rosbridge_library.internal.ros_loader._get_srv_class

(

typestring

)

[private]

If not loaded, loads the specified srv class then returns an instance
of it

Throws various exceptions if loading the srv class fails 

Definition at line 131 of file ros_loader.py.

def rosbridge_library.internal.ros_loader._load_class	(		modname,
			subname,
			classname
	)		[private]

Loads the manifest and imports the module that contains the specified
type.

Logic is similar to that of roslib.message.get_message_class, but we want
more expressive exceptions.

Returns the loaded module, or None on failure 

Definition at line 172 of file ros_loader.py.

def rosbridge_library.internal.ros_loader._splittype

(

typestring

)

[private]

Split the string the / delimiter and strip out empty strings

Performs similar logic to roslib.names.package_resource_name but is a bit
more forgiving about excess slashes

Definition at line 200 of file ros_loader.py.

def rosbridge_library.internal.ros_loader.get_message_class

(

typestring

)

Loads the message type specified.

Returns the loaded class, or throws exceptions on failure 

Definition at line 84 of file ros_loader.py.

def rosbridge_library.internal.ros_loader.get_message_instance

(

typestring

)

If not loaded, loads the specified type.
Then returns an instance of it, or None. 

Definition at line 98 of file ros_loader.py.

def rosbridge_library.internal.ros_loader.get_service_class

(

typestring

)

Loads the service type specified.

Returns the loaded class, or None on failure 

Definition at line 91 of file ros_loader.py.

def rosbridge_library.internal.ros_loader.get_service_instance

(

typestring

)

If not loaded, loads the specified type.
Then returns an instance of it, or None. 

Definition at line 105 of file ros_loader.py.

def rosbridge_library.internal.ros_loader.get_service_request_instance

(

typestring

)

Definition at line 112 of file ros_loader.py.

def rosbridge_library.internal.ros_loader.get_service_response_instance

(

typestring

)

Definition at line 117 of file ros_loader.py.

---

Variable Documentation

dictionary rosbridge_library::internal::ros_loader::_loaded_msgs = {}

Definition at line 48 of file ros_loader.py.

dictionary rosbridge_library::internal::ros_loader::_loaded_srvs = {}

Definition at line 49 of file ros_loader.py.

tuple rosbridge_library::internal::ros_loader::_manifest_lock = Lock()

Definition at line 52 of file ros_loader.py.

tuple rosbridge_library::internal::ros_loader::_msgs_lock = Lock()

Definition at line 50 of file ros_loader.py.

tuple rosbridge_library::internal::ros_loader::_srvs_lock = Lock()

Definition at line 51 of file ros_loader.py.