# THE SOFTWARE.
from bt2 import native_bt, object, utils
+import bt2.interrupter
import bt2.connection
import bt2.component
import functools
import bt2
-def _graph_port_added_listener_from_native(user_listener,
- component_ptr, component_type,
- port_ptr, port_type):
- component = bt2.component._create_component_from_ptr_and_get_ref(component_ptr, component_type)
+def _graph_port_added_listener_from_native(
+ user_listener, component_ptr, component_type, port_ptr, port_type
+):
+ component = bt2.component._create_component_from_ptr_and_get_ref(
+ component_ptr, component_type
+ )
port = bt2.port._create_from_ptr_and_get_ref(port_ptr, port_type)
user_listener(component, port)
-def _graph_ports_connected_listener_from_native(user_listener,
- upstream_component_ptr, upstream_component_type,
- upstream_port_ptr,
- downstream_component_ptr, downstream_component_type,
- downstream_port_ptr):
+def _graph_ports_connected_listener_from_native(
+ user_listener,
+ upstream_component_ptr,
+ upstream_component_type,
+ upstream_port_ptr,
+ downstream_component_ptr,
+ downstream_component_type,
+ downstream_port_ptr,
+):
upstream_component = bt2.component._create_component_from_ptr_and_get_ref(
- upstream_component_ptr, upstream_component_type)
+ upstream_component_ptr, upstream_component_type
+ )
upstream_port = bt2.port._create_from_ptr_and_get_ref(
- upstream_port_ptr, native_bt.PORT_TYPE_OUTPUT)
+ upstream_port_ptr, native_bt.PORT_TYPE_OUTPUT
+ )
downstream_component = bt2.component._create_component_from_ptr_and_get_ref(
- downstream_component_ptr, downstream_component_type)
+ downstream_component_ptr, downstream_component_type
+ )
downstream_port = bt2.port._create_from_ptr_and_get_ref(
- downstream_port_ptr, native_bt.PORT_TYPE_INPUT)
- user_listener(upstream_component, upstream_port, downstream_component, downstream_port)
+ downstream_port_ptr, native_bt.PORT_TYPE_INPUT
+ )
+ user_listener(
+ upstream_component, upstream_port, downstream_component, downstream_port
+ )
class Graph(object._SharedObject):
ptr = native_bt.graph_create()
if ptr is None:
- raise bt2.CreationError('cannot create graph object')
+ raise bt2._MemoryError('cannot create graph object')
super().__init__(ptr)
- def _handle_status(self, status, gen_error_msg):
- if status == native_bt.GRAPH_STATUS_COMPONENT_REFUSES_PORT_CONNECTION:
- raise bt2.PortConnectionRefused
- elif status == native_bt.GRAPH_STATUS_CANCELED:
- raise bt2.GraphCanceled
- elif status == native_bt.GRAPH_STATUS_END:
- raise bt2.Stop
- elif status == native_bt.GRAPH_STATUS_AGAIN:
- raise bt2.TryAgain
- elif status < 0:
- raise bt2.Error(gen_error_msg)
-
- def add_component(self, component_class, name, params=None,
- logging_level=bt2.logging.LoggingLevel.NONE):
+ def add_component(
+ self,
+ component_class,
+ name,
+ params=None,
+ logging_level=bt2.logging.LoggingLevel.NONE,
+ ):
if isinstance(component_class, bt2.component._GenericSourceComponentClass):
cc_ptr = component_class._ptr
add_fn = native_bt.graph_add_source_component
add_fn = native_bt.graph_add_sink_component
cc_type = native_bt.COMPONENT_CLASS_TYPE_SINK
elif issubclass(component_class, bt2.component._UserSourceComponent):
- cc_ptr = component_class._cc_ptr
+ cc_ptr = component_class._bt_cc_ptr
add_fn = native_bt.graph_add_source_component
cc_type = native_bt.COMPONENT_CLASS_TYPE_SOURCE
elif issubclass(component_class, bt2.component._UserSinkComponent):
- cc_ptr = component_class._cc_ptr
+ cc_ptr = component_class._bt_cc_ptr
add_fn = native_bt.graph_add_sink_component
cc_type = native_bt.COMPONENT_CLASS_TYPE_SINK
elif issubclass(component_class, bt2.component._UserFilterComponent):
- cc_ptr = component_class._cc_ptr
+ cc_ptr = component_class._bt_cc_ptr
add_fn = native_bt.graph_add_filter_component
cc_type = native_bt.COMPONENT_CLASS_TYPE_FILTER
else:
- raise TypeError("'{}' is not a component class".format(
- component_class.__class__.__name__))
+ raise TypeError(
+ "'{}' is not a component class".format(
+ component_class.__class__.__name__
+ )
+ )
utils._check_str(name)
utils._check_log_level(logging_level)
params_ptr = params._ptr if params is not None else None
- status, comp_ptr = add_fn(self._ptr, cc_ptr, name,
- params_ptr, logging_level)
- self._handle_status(status, 'cannot add component to graph')
+ status, comp_ptr = add_fn(self._ptr, cc_ptr, name, params_ptr, logging_level)
+ utils._handle_func_status(status, 'cannot add component to graph')
assert comp_ptr
return bt2.component._create_component_from_ptr(comp_ptr, cc_type)
def connect_ports(self, upstream_port, downstream_port):
utils._check_type(upstream_port, bt2.port._OutputPort)
utils._check_type(downstream_port, bt2.port._InputPort)
- status, conn_ptr = native_bt.graph_connect_ports(self._ptr,
- upstream_port._ptr,
- downstream_port._ptr)
- self._handle_status(status, 'cannot connect component ports within graph')
- assert(conn_ptr)
+ status, conn_ptr = native_bt.graph_connect_ports(
+ self._ptr, upstream_port._ptr, downstream_port._ptr
+ )
+ utils._handle_func_status(status, 'cannot connect component ports within graph')
+ assert conn_ptr
return bt2.connection._Connection._create_from_ptr(conn_ptr)
def add_port_added_listener(self, listener):
if not callable(listener):
raise TypeError("'listener' parameter is not callable")
- fn = native_bt.py3_graph_add_port_added_listener
- listener_from_native = functools.partial(_graph_port_added_listener_from_native,
- listener)
+ fn = native_bt.bt2_graph_add_port_added_listener
+ listener_from_native = functools.partial(
+ _graph_port_added_listener_from_native, listener
+ )
listener_ids = fn(self._ptr, listener_from_native)
if listener_ids is None:
- utils._raise_bt2_error('cannot add listener to graph object')
+ raise bt2._Error('cannot add listener to graph object')
+
return bt2._ListenerHandle(listener_ids, self)
def add_ports_connected_listener(self, listener):
if not callable(listener):
raise TypeError("'listener' parameter is not callable")
- fn = native_bt.py3_graph_add_ports_connected_listener
- listener_from_native = functools.partial(_graph_ports_connected_listener_from_native,
- listener)
+ fn = native_bt.bt2_graph_add_ports_connected_listener
+ listener_from_native = functools.partial(
+ _graph_ports_connected_listener_from_native, listener
+ )
listener_ids = fn(self._ptr, listener_from_native)
if listener_ids is None:
- utils._raise_bt2_error('cannot add listener to graph object')
+ raise bt2._Error('cannot add listener to graph object')
+
return bt2._ListenerHandle(listener_ids, self)
def run(self):
status = native_bt.graph_run(self._ptr)
- if status == native_bt.GRAPH_STATUS_END:
+ try:
+ utils._handle_func_status(status, 'graph object stopped running')
+ except bt2.Stop:
+ # done
return
+ except Exception:
+ raise
- self._handle_status(status, 'graph object stopped running because of an unexpected error')
-
- def cancel(self):
- status = native_bt.graph_cancel(self._ptr)
- self._handle_status(status, 'cannot cancel graph object')
+ def add_interrupter(self, interrupter):
+ utils._check_type(interrupter, bt2.interrupter.Interrupter)
+ native_bt.graph_add_interrupter(self._ptr, interrupter._ptr)
- @property
- def is_canceled(self):
- is_canceled = native_bt.graph_is_canceled(self._ptr)
- assert(is_canceled >= 0)
- return is_canceled > 0
+ def interrupt(self):
+ native_bt.graph_interrupt(self._ptr)
def create_output_port_message_iterator(self, output_port):
utils._check_type(output_port, bt2.port._OutputPort)
- msg_iter_ptr = native_bt.port_output_message_iterator_create(self._ptr, output_port._ptr)
+ msg_iter_ptr = native_bt.port_output_message_iterator_create(
+ self._ptr, output_port._ptr
+ )
if msg_iter_ptr is None:
- raise bt2.CreationError('cannot create output port message iterator')
+ raise bt2._MemoryError('cannot create output port message iterator')
return bt2.message_iterator._OutputPortMessageIterator(msg_iter_ptr)
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