import bt2
-class GraphListenerType:
- PORT_ADDED = 0
- PORT_REMOVED = 1
- PORTS_CONNECTED = 2
- PORTS_DISCONNECTED = 3
-
-
-def _graph_port_added_listener_from_native(user_listener, port_ptr):
- try:
- port = bt2.port._create_from_ptr(port_ptr)
- port._get()
- user_listener(port)
- except:
- pass
-
-
-def _graph_port_removed_listener_from_native(user_listener, port_ptr):
- try:
- port = bt2.port._create_from_ptr(port_ptr)
- port._get()
- user_listener(port)
- except:
- pass
+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):
- try:
- upstream_port = bt2.port._create_from_ptr(upstream_port_ptr)
- upstream_port._get()
- downstream_port = bt2.port._create_from_ptr(downstream_port_ptr)
- downstream_port._get()
- user_listener(upstream_port, downstream_port)
- except:
- pass
-
-
-def _graph_ports_disconnected_listener_from_native(user_listener,
- upstream_comp_ptr,
- downstream_comp_ptr,
- upstream_port_ptr,
- downstream_port_ptr):
- try:
- upstream_comp = bt2.component._create_generic_component_from_ptr(upstream_comp_ptr)
- upstream_comp._get()
- downstream_comp = bt2.component._create_generic_component_from_ptr(downstream_comp_ptr)
- downstream_comp._get()
- upstream_port = bt2.port._create_from_ptr(upstream_port_ptr)
- upstream_port._get()
- downstream_port = bt2.port._create_from_ptr(downstream_port_ptr)
- downstream_port._get()
- user_listener(upstream_comp, downstream_comp, upstream_port,
- downstream_port)
- except:
- pass
-
-
-class Graph(object._Object):
+ upstream_component = bt2.component._create_component_from_ptr_and_get_ref(
+ upstream_component_ptr, upstream_component_type)
+ upstream_port = bt2.port._create_from_ptr_and_get_ref(
+ 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_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)
+
+
+class Graph(object._SharedObject):
+ _get_ref = staticmethod(native_bt.graph_get_ref)
+ _put_ref = staticmethod(native_bt.graph_put_ref)
+
def __init__(self):
ptr = native_bt.graph_create()
raise bt2.Stop
elif status == native_bt.GRAPH_STATUS_AGAIN:
raise bt2.TryAgain
- elif status == native_bt.GRAPH_STATUS_NO_SINK:
- raise bt2.NoSinkComponent
elif status < 0:
raise bt2.Error(gen_error_msg)
def add_component(self, component_class, name, params=None):
- if isinstance(component_class, bt2.component._GenericComponentClass):
+ if isinstance(component_class, bt2.component._GenericSourceComponentClass):
+ cc_ptr = component_class._ptr
+ add_fn = native_bt.graph_add_source_component
+ cc_type = native_bt.COMPONENT_CLASS_TYPE_SOURCE
+ elif isinstance(component_class, bt2.component._GenericFilterComponentClass):
+ cc_ptr = component_class._ptr
+ add_fn = native_bt.graph_add_filter_component
+ cc_type = native_bt.COMPONENT_CLASS_TYPE_FILTER
+ elif isinstance(component_class, bt2.component._GenericSinkComponentClass):
cc_ptr = component_class._ptr
- elif issubclass(component_class, bt2.component._UserComponent):
+ 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
+ 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
+ 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
+ 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)
params = bt2.create_value(params)
- if params is None:
- params_ptr = None
- else:
- params_ptr = params._ptr
+ params_ptr = params._ptr if params is not None else None
- status, comp_ptr = native_bt.graph_add_component(self._ptr, cc_ptr,
- name, params_ptr)
+ status, comp_ptr = add_fn(self._ptr, cc_ptr, name, params_ptr)
self._handle_status(status, 'cannot add component to graph')
- assert(comp_ptr)
- return bt2.component._create_generic_component_from_ptr(comp_ptr)
+ 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)
assert(conn_ptr)
return bt2.connection._Connection._create_from_ptr(conn_ptr)
- def add_listener(self, listener_type, listener):
- if not hasattr(listener, '__call__'):
+ def add_port_added_listener(self, listener):
+ if not callable(listener):
raise TypeError("'listener' parameter is not callable")
- if listener_type == GraphListenerType.PORT_ADDED:
- fn = native_bt.py3_graph_add_port_added_listener
- listener_from_native = functools.partial(_graph_port_added_listener_from_native,
- listener)
- elif listener_type == GraphListenerType.PORT_REMOVED:
- fn = native_bt.py3_graph_add_port_removed_listener
- listener_from_native = functools.partial(_graph_port_removed_listener_from_native,
- listener)
- elif listener_type == GraphListenerType.PORTS_CONNECTED:
- fn = native_bt.py3_graph_add_ports_connected_listener
- listener_from_native = functools.partial(_graph_ports_connected_listener_from_native,
- listener)
- elif listener_type == GraphListenerType.PORTS_DISCONNECTED:
- fn = native_bt.py3_graph_add_ports_disconnected_listener
- listener_from_native = functools.partial(_graph_ports_disconnected_listener_from_native,
- listener)
- else:
- raise TypeError
+ fn = native_bt.py3_graph_add_port_added_listener
+ listener_from_native = functools.partial(_graph_port_added_listener_from_native,
+ listener)
- listener_id = fn(self._ptr, listener_from_native)
- utils._handle_ret(listener_id, 'cannot add listener to graph object')
- return bt2._ListenerHandle(listener_id, self)
+ listener_ids = fn(self._ptr, listener_from_native)
+ if listener_ids is None:
+ utils._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)
+
+ listener_ids = fn(self._ptr, listener_from_native)
+ if listener_ids is None:
+ utils._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)
assert(is_canceled >= 0)
return is_canceled > 0
- def __eq__(self, other):
- if type(other) is not type(self):
- return False
+ 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)
+
+ if msg_iter_ptr is None:
+ raise bt2.CreationError('cannot create output port message iterator')
- return self.addr == other.addr
+ return bt2.message_iterator._OutputPortMessageIterator(msg_iter_ptr)
projects / babeltrace.git / blobdiff