| 1 | # SPDX-License-Identifier: MIT |
| 2 | # |
| 3 | # Copyright (c) 2017 Philippe Proulx <pproulx@efficios.com> |
| 4 | |
| 5 | import numbers |
| 6 | import datetime |
| 7 | import itertools |
| 8 | from collections import namedtuple |
| 9 | |
| 10 | from bt2 import mip as bt2_mip |
| 11 | from bt2 import port as bt2_port |
| 12 | from bt2 import error as bt2_error |
| 13 | from bt2 import graph as bt2_graph |
| 14 | from bt2 import utils as bt2_utils |
| 15 | from bt2 import value as bt2_value |
| 16 | from bt2 import plugin as bt2_plugin |
| 17 | from bt2 import logging as bt2_logging |
| 18 | from bt2 import component as bt2_component |
| 19 | from bt2 import native_bt |
| 20 | from bt2 import query_executor as bt2_query_executor |
| 21 | from bt2 import message_iterator as bt2_message_iterator |
| 22 | from bt2 import component_descriptor as bt2_component_descriptor |
| 23 | |
| 24 | # a pair of component and ComponentSpec |
| 25 | _ComponentAndSpec = namedtuple("_ComponentAndSpec", ["comp", "spec"]) |
| 26 | |
| 27 | |
| 28 | class _BaseComponentSpec: |
| 29 | # Base for any component spec that can be passed to |
| 30 | # TraceCollectionMessageIterator. |
| 31 | def __init__(self, params, obj, logging_level): |
| 32 | if logging_level is not None: |
| 33 | bt2_utils._check_log_level(logging_level) |
| 34 | |
| 35 | self._params = bt2_value.create_value(params) |
| 36 | self._obj = obj |
| 37 | self._logging_level = logging_level |
| 38 | |
| 39 | @property |
| 40 | def params(self): |
| 41 | return self._params |
| 42 | |
| 43 | @property |
| 44 | def obj(self): |
| 45 | return self._obj |
| 46 | |
| 47 | @property |
| 48 | def logging_level(self): |
| 49 | return self._logging_level |
| 50 | |
| 51 | |
| 52 | class ComponentSpec(_BaseComponentSpec): |
| 53 | # A component spec with a specific component class. |
| 54 | def __init__( |
| 55 | self, |
| 56 | component_class, |
| 57 | params=None, |
| 58 | obj=None, |
| 59 | logging_level=bt2_logging.LoggingLevel.NONE, |
| 60 | ): |
| 61 | if type(params) is str: |
| 62 | params = {"inputs": [params]} |
| 63 | |
| 64 | super().__init__(params, obj, logging_level) |
| 65 | |
| 66 | is_cc_object = isinstance( |
| 67 | component_class, |
| 68 | ( |
| 69 | bt2_component._SourceComponentClassConst, |
| 70 | bt2_component._FilterComponentClassConst, |
| 71 | ), |
| 72 | ) |
| 73 | is_user_cc_type = isinstance( |
| 74 | component_class, bt2_component._UserComponentType |
| 75 | ) and issubclass( |
| 76 | component_class, |
| 77 | (bt2_component._UserSourceComponent, bt2_component._UserFilterComponent), |
| 78 | ) |
| 79 | |
| 80 | if not is_cc_object and not is_user_cc_type: |
| 81 | raise TypeError( |
| 82 | "'{}' is not a source or filter component class".format( |
| 83 | component_class.__class__.__name__ |
| 84 | ) |
| 85 | ) |
| 86 | |
| 87 | self._component_class = component_class |
| 88 | |
| 89 | @property |
| 90 | def component_class(self): |
| 91 | return self._component_class |
| 92 | |
| 93 | @classmethod |
| 94 | def from_named_plugin_and_component_class( |
| 95 | cls, |
| 96 | plugin_name, |
| 97 | component_class_name, |
| 98 | params=None, |
| 99 | obj=None, |
| 100 | logging_level=bt2_logging.LoggingLevel.NONE, |
| 101 | ): |
| 102 | plugin = bt2_plugin.find_plugin(plugin_name) |
| 103 | |
| 104 | if plugin is None: |
| 105 | raise ValueError("no such plugin: {}".format(plugin_name)) |
| 106 | |
| 107 | if component_class_name in plugin.source_component_classes: |
| 108 | comp_class = plugin.source_component_classes[component_class_name] |
| 109 | elif component_class_name in plugin.filter_component_classes: |
| 110 | comp_class = plugin.filter_component_classes[component_class_name] |
| 111 | else: |
| 112 | raise KeyError( |
| 113 | "source or filter component class `{}` not found in plugin `{}`".format( |
| 114 | component_class_name, plugin_name |
| 115 | ) |
| 116 | ) |
| 117 | |
| 118 | return cls(comp_class, params, obj, logging_level) |
| 119 | |
| 120 | |
| 121 | class AutoSourceComponentSpec(_BaseComponentSpec): |
| 122 | # A component spec that does automatic source discovery. |
| 123 | _no_obj = object() |
| 124 | |
| 125 | def __init__(self, input, params=None, obj=_no_obj, logging_level=None): |
| 126 | super().__init__(params, obj, logging_level) |
| 127 | self._input = input |
| 128 | |
| 129 | @property |
| 130 | def input(self): |
| 131 | return self._input |
| 132 | |
| 133 | |
| 134 | def _auto_discover_source_component_specs(auto_source_comp_specs, plugin_set): |
| 135 | # Transform a list of `AutoSourceComponentSpec` in a list of `ComponentSpec` |
| 136 | # using the automatic source discovery mechanism. |
| 137 | inputs = bt2_value.ArrayValue([spec.input for spec in auto_source_comp_specs]) |
| 138 | |
| 139 | if plugin_set is None: |
| 140 | plugin_set = bt2_plugin.find_plugins() |
| 141 | else: |
| 142 | bt2_utils._check_type(plugin_set, bt2_plugin._PluginSet) |
| 143 | |
| 144 | res_ptr = native_bt.bt2_auto_discover_source_components( |
| 145 | inputs._ptr, plugin_set._ptr |
| 146 | ) |
| 147 | |
| 148 | if res_ptr is None: |
| 149 | raise bt2_error._MemoryError("cannot auto discover source components") |
| 150 | |
| 151 | res = bt2_value._create_from_ptr(res_ptr) |
| 152 | |
| 153 | assert type(res) is bt2_value.MapValue |
| 154 | assert "status" in res |
| 155 | |
| 156 | status = res["status"] |
| 157 | bt2_utils._handle_func_status(status, "cannot auto-discover source components") |
| 158 | |
| 159 | comp_specs = [] |
| 160 | comp_specs_raw = res["results"] |
| 161 | assert type(comp_specs_raw) is bt2_value.ArrayValue |
| 162 | |
| 163 | used_input_indices = set() |
| 164 | |
| 165 | for comp_spec_raw in comp_specs_raw: |
| 166 | assert type(comp_spec_raw) is bt2_value.ArrayValue |
| 167 | assert len(comp_spec_raw) == 4 |
| 168 | |
| 169 | plugin_name = comp_spec_raw[0] |
| 170 | assert type(plugin_name) is bt2_value.StringValue |
| 171 | plugin_name = str(plugin_name) |
| 172 | |
| 173 | class_name = comp_spec_raw[1] |
| 174 | assert type(class_name) is bt2_value.StringValue |
| 175 | class_name = str(class_name) |
| 176 | |
| 177 | comp_inputs = comp_spec_raw[2] |
| 178 | assert type(comp_inputs) is bt2_value.ArrayValue |
| 179 | |
| 180 | comp_orig_indices = comp_spec_raw[3] |
| 181 | assert type(comp_orig_indices) |
| 182 | |
| 183 | params = bt2_value.MapValue() |
| 184 | logging_level = bt2_logging.LoggingLevel.NONE |
| 185 | obj = None |
| 186 | |
| 187 | # Compute `params` for this component by piling up params given to all |
| 188 | # AutoSourceComponentSpec objects that contributed in the instantiation |
| 189 | # of this component. |
| 190 | # |
| 191 | # The effective log level for a component is the last one specified |
| 192 | # across the AutoSourceComponentSpec that contributed in its |
| 193 | # instantiation. |
| 194 | for idx in comp_orig_indices: |
| 195 | orig_spec = auto_source_comp_specs[idx] |
| 196 | |
| 197 | if orig_spec.params is not None: |
| 198 | params.update(orig_spec.params) |
| 199 | |
| 200 | if orig_spec.logging_level is not None: |
| 201 | logging_level = orig_spec.logging_level |
| 202 | |
| 203 | if orig_spec.obj is not AutoSourceComponentSpec._no_obj: |
| 204 | obj = orig_spec.obj |
| 205 | |
| 206 | used_input_indices.add(int(idx)) |
| 207 | |
| 208 | params["inputs"] = comp_inputs |
| 209 | |
| 210 | comp_specs.append( |
| 211 | ComponentSpec.from_named_plugin_and_component_class( |
| 212 | plugin_name, |
| 213 | class_name, |
| 214 | params=params, |
| 215 | obj=obj, |
| 216 | logging_level=logging_level, |
| 217 | ) |
| 218 | ) |
| 219 | |
| 220 | if len(used_input_indices) != len(inputs): |
| 221 | unused_input_indices = set(range(len(inputs))) - used_input_indices |
| 222 | unused_input_indices = sorted(unused_input_indices) |
| 223 | unused_inputs = [str(inputs[x]) for x in unused_input_indices] |
| 224 | |
| 225 | msg = ( |
| 226 | "Some auto source component specs did not produce any component: " |
| 227 | + ", ".join(unused_inputs) |
| 228 | ) |
| 229 | raise RuntimeError(msg) |
| 230 | |
| 231 | return comp_specs |
| 232 | |
| 233 | |
| 234 | # datetime.datetime or integral to nanoseconds |
| 235 | def _get_ns(obj): |
| 236 | if obj is None: |
| 237 | return |
| 238 | |
| 239 | if isinstance(obj, numbers.Real): |
| 240 | # consider that it's already in seconds |
| 241 | s = obj |
| 242 | elif isinstance(obj, datetime.datetime): |
| 243 | # s -> ns |
| 244 | s = obj.timestamp() |
| 245 | else: |
| 246 | raise TypeError( |
| 247 | '"{}" is not an integral number or a datetime.datetime object'.format(obj) |
| 248 | ) |
| 249 | |
| 250 | return int(s * 1e9) |
| 251 | |
| 252 | |
| 253 | class _TraceCollectionMessageIteratorProxySink(bt2_component._UserSinkComponent): |
| 254 | def __init__(self, config, params, msg_list): |
| 255 | assert type(msg_list) is list |
| 256 | self._msg_list = msg_list |
| 257 | self._add_input_port("in") |
| 258 | |
| 259 | def _user_graph_is_configured(self): |
| 260 | self._msg_iter = self._create_message_iterator(self._input_ports["in"]) |
| 261 | |
| 262 | def _user_consume(self): |
| 263 | assert self._msg_list[0] is None |
| 264 | self._msg_list[0] = next(self._msg_iter) |
| 265 | |
| 266 | |
| 267 | class TraceCollectionMessageIterator(bt2_message_iterator._MessageIterator): |
| 268 | def __init__( |
| 269 | self, |
| 270 | source_component_specs, |
| 271 | filter_component_specs=None, |
| 272 | stream_intersection_mode=False, |
| 273 | begin=None, |
| 274 | end=None, |
| 275 | plugin_set=None, |
| 276 | ): |
| 277 | bt2_utils._check_bool(stream_intersection_mode) |
| 278 | self._stream_intersection_mode = stream_intersection_mode |
| 279 | self._begin_ns = _get_ns(begin) |
| 280 | self._end_ns = _get_ns(end) |
| 281 | self._msg_list = [None] |
| 282 | |
| 283 | # If a single item is provided, convert to a list. |
| 284 | if type(source_component_specs) in ( |
| 285 | ComponentSpec, |
| 286 | AutoSourceComponentSpec, |
| 287 | str, |
| 288 | ): |
| 289 | source_component_specs = [source_component_specs] |
| 290 | |
| 291 | # Convert any string to an AutoSourceComponentSpec. |
| 292 | def str_to_auto(item): |
| 293 | if type(item) is str: |
| 294 | item = AutoSourceComponentSpec(item) |
| 295 | |
| 296 | return item |
| 297 | |
| 298 | source_component_specs = [str_to_auto(s) for s in source_component_specs] |
| 299 | |
| 300 | if type(filter_component_specs) is ComponentSpec: |
| 301 | filter_component_specs = [filter_component_specs] |
| 302 | elif filter_component_specs is None: |
| 303 | filter_component_specs = [] |
| 304 | |
| 305 | self._validate_source_component_specs(source_component_specs) |
| 306 | self._validate_filter_component_specs(filter_component_specs) |
| 307 | |
| 308 | # Pass any `ComponentSpec` instance as-is. |
| 309 | self._src_comp_specs = [ |
| 310 | spec for spec in source_component_specs if type(spec) is ComponentSpec |
| 311 | ] |
| 312 | |
| 313 | # Convert any `AutoSourceComponentSpec` in concrete `ComponentSpec` instances. |
| 314 | auto_src_comp_specs = [ |
| 315 | spec |
| 316 | for spec in source_component_specs |
| 317 | if type(spec) is AutoSourceComponentSpec |
| 318 | ] |
| 319 | self._src_comp_specs += _auto_discover_source_component_specs( |
| 320 | auto_src_comp_specs, plugin_set |
| 321 | ) |
| 322 | |
| 323 | self._flt_comp_specs = filter_component_specs |
| 324 | self._next_suffix = 1 |
| 325 | self._connect_ports = False |
| 326 | |
| 327 | # lists of _ComponentAndSpec |
| 328 | self._src_comps_and_specs = [] |
| 329 | self._flt_comps_and_specs = [] |
| 330 | |
| 331 | self._build_graph() |
| 332 | |
| 333 | def _compute_stream_intersections(self): |
| 334 | # Pre-compute the trimmer range to use for each port in the graph, when |
| 335 | # stream intersection mode is enabled. |
| 336 | self._stream_inter_port_to_range = {} |
| 337 | |
| 338 | for src_comp_and_spec in self._src_comps_and_specs: |
| 339 | # Query the port's component for the `babeltrace.trace-infos` |
| 340 | # object which contains the range for each stream, from which we can |
| 341 | # compute the intersection of the streams in each trace. |
| 342 | query_exec = bt2_query_executor.QueryExecutor( |
| 343 | src_comp_and_spec.spec.component_class, |
| 344 | "babeltrace.trace-infos", |
| 345 | src_comp_and_spec.spec.params, |
| 346 | ) |
| 347 | trace_infos = query_exec.query() |
| 348 | |
| 349 | for trace_info in trace_infos: |
| 350 | begin = max( |
| 351 | [ |
| 352 | stream["range-ns"]["begin"] |
| 353 | for stream in trace_info["stream-infos"] |
| 354 | ] |
| 355 | ) |
| 356 | end = min( |
| 357 | [stream["range-ns"]["end"] for stream in trace_info["stream-infos"]] |
| 358 | ) |
| 359 | |
| 360 | # Each port associated to this trace will have this computed |
| 361 | # range. |
| 362 | for stream in trace_info["stream-infos"]: |
| 363 | # A port name is unique within a component, but not |
| 364 | # necessarily across all components. Use a component |
| 365 | # and port name pair to make it unique across the graph. |
| 366 | port_name = str(stream["port-name"]) |
| 367 | key = (src_comp_and_spec.comp.addr, port_name) |
| 368 | self._stream_inter_port_to_range[key] = (begin, end) |
| 369 | |
| 370 | def _validate_source_component_specs(self, comp_specs): |
| 371 | for comp_spec in comp_specs: |
| 372 | if ( |
| 373 | type(comp_spec) is not ComponentSpec |
| 374 | and type(comp_spec) is not AutoSourceComponentSpec |
| 375 | ): |
| 376 | raise TypeError( |
| 377 | '"{}" object is not a ComponentSpec or AutoSourceComponentSpec'.format( |
| 378 | type(comp_spec) |
| 379 | ) |
| 380 | ) |
| 381 | |
| 382 | def _validate_filter_component_specs(self, comp_specs): |
| 383 | for comp_spec in comp_specs: |
| 384 | if type(comp_spec) is not ComponentSpec: |
| 385 | raise TypeError( |
| 386 | '"{}" object is not a ComponentSpec'.format(type(comp_spec)) |
| 387 | ) |
| 388 | |
| 389 | def __next__(self): |
| 390 | assert self._msg_list[0] is None |
| 391 | self._graph.run_once() |
| 392 | msg = self._msg_list[0] |
| 393 | assert msg is not None |
| 394 | self._msg_list[0] = None |
| 395 | return msg |
| 396 | |
| 397 | def _create_stream_intersection_trimmer(self, component, port): |
| 398 | key = (component.addr, port.name) |
| 399 | begin, end = self._stream_inter_port_to_range[key] |
| 400 | name = "trimmer-{}-{}".format(component.name, port.name) |
| 401 | return self._create_trimmer(begin, end, name) |
| 402 | |
| 403 | def _create_muxer(self): |
| 404 | plugin = bt2_plugin.find_plugin("utils") |
| 405 | |
| 406 | if plugin is None: |
| 407 | raise RuntimeError('cannot find "utils" plugin (needed for the muxer)') |
| 408 | |
| 409 | if "muxer" not in plugin.filter_component_classes: |
| 410 | raise RuntimeError( |
| 411 | 'cannot find "muxer" filter component class in "utils" plugin' |
| 412 | ) |
| 413 | |
| 414 | comp_cls = plugin.filter_component_classes["muxer"] |
| 415 | return self._graph.add_component(comp_cls, "muxer") |
| 416 | |
| 417 | def _create_trimmer(self, begin_ns, end_ns, name): |
| 418 | plugin = bt2_plugin.find_plugin("utils") |
| 419 | |
| 420 | if plugin is None: |
| 421 | raise RuntimeError('cannot find "utils" plugin (needed for the trimmer)') |
| 422 | |
| 423 | if "trimmer" not in plugin.filter_component_classes: |
| 424 | raise RuntimeError( |
| 425 | 'cannot find "trimmer" filter component class in "utils" plugin' |
| 426 | ) |
| 427 | |
| 428 | params = {} |
| 429 | |
| 430 | def ns_to_string(ns): |
| 431 | s_part = ns // 1000000000 |
| 432 | ns_part = ns % 1000000000 |
| 433 | return "{}.{:09d}".format(s_part, ns_part) |
| 434 | |
| 435 | if begin_ns is not None: |
| 436 | params["begin"] = ns_to_string(begin_ns) |
| 437 | |
| 438 | if end_ns is not None: |
| 439 | params["end"] = ns_to_string(end_ns) |
| 440 | |
| 441 | comp_cls = plugin.filter_component_classes["trimmer"] |
| 442 | return self._graph.add_component(comp_cls, name, params) |
| 443 | |
| 444 | def _get_unique_comp_name(self, comp_cls): |
| 445 | name = comp_cls.name |
| 446 | comps_and_specs = itertools.chain( |
| 447 | self._src_comps_and_specs, self._flt_comps_and_specs |
| 448 | ) |
| 449 | |
| 450 | if name in [comp_and_spec.comp.name for comp_and_spec in comps_and_specs]: |
| 451 | name += "-{}".format(self._next_suffix) |
| 452 | self._next_suffix += 1 |
| 453 | |
| 454 | return name |
| 455 | |
| 456 | def _create_comp(self, comp_spec): |
| 457 | comp_cls = comp_spec.component_class |
| 458 | name = self._get_unique_comp_name(comp_cls) |
| 459 | comp = self._graph.add_component( |
| 460 | comp_cls, name, comp_spec.params, comp_spec.obj, comp_spec.logging_level |
| 461 | ) |
| 462 | return comp |
| 463 | |
| 464 | def _get_free_muxer_input_port(self): |
| 465 | for port in self._muxer_comp.input_ports.values(): |
| 466 | if not port.is_connected: |
| 467 | return port |
| 468 | |
| 469 | def _connect_src_comp_port(self, component, port): |
| 470 | # if this trace collection iterator is in stream intersection |
| 471 | # mode, we need this connection: |
| 472 | # |
| 473 | # port -> trimmer -> muxer |
| 474 | # |
| 475 | # otherwise, simply: |
| 476 | # |
| 477 | # port -> muxer |
| 478 | if self._stream_intersection_mode: |
| 479 | trimmer_comp = self._create_stream_intersection_trimmer(component, port) |
| 480 | self._graph.connect_ports(port, trimmer_comp.input_ports["in"]) |
| 481 | port_to_muxer = trimmer_comp.output_ports["out"] |
| 482 | else: |
| 483 | port_to_muxer = port |
| 484 | |
| 485 | self._graph.connect_ports(port_to_muxer, self._get_free_muxer_input_port()) |
| 486 | |
| 487 | def _graph_port_added(self, component, port): |
| 488 | if not self._connect_ports: |
| 489 | return |
| 490 | |
| 491 | if type(port) is bt2_port._InputPortConst: |
| 492 | return |
| 493 | |
| 494 | if component not in [comp.comp for comp in self._src_comps_and_specs]: |
| 495 | # do not care about non-source components (muxer, trimmer, etc.) |
| 496 | return |
| 497 | |
| 498 | self._connect_src_comp_port(component, port) |
| 499 | |
| 500 | def _get_greatest_operative_mip_version(self): |
| 501 | def append_comp_specs_descriptors(descriptors, comp_specs): |
| 502 | for comp_spec in comp_specs: |
| 503 | descriptors.append( |
| 504 | bt2_component_descriptor.ComponentDescriptor( |
| 505 | comp_spec.component_class, comp_spec.params, comp_spec.obj |
| 506 | ) |
| 507 | ) |
| 508 | |
| 509 | descriptors = [] |
| 510 | append_comp_specs_descriptors(descriptors, self._src_comp_specs) |
| 511 | append_comp_specs_descriptors(descriptors, self._flt_comp_specs) |
| 512 | |
| 513 | if self._stream_intersection_mode: |
| 514 | # we also need at least one `flt.utils.trimmer` component |
| 515 | comp_spec = ComponentSpec.from_named_plugin_and_component_class( |
| 516 | "utils", "trimmer" |
| 517 | ) |
| 518 | append_comp_specs_descriptors(descriptors, [comp_spec]) |
| 519 | |
| 520 | mip_version = bt2_mip.get_greatest_operative_mip_version(descriptors) |
| 521 | |
| 522 | if mip_version is None: |
| 523 | msg = "failed to find an operative message interchange protocol version (components are not interoperable)" |
| 524 | raise RuntimeError(msg) |
| 525 | |
| 526 | return mip_version |
| 527 | |
| 528 | def _build_graph(self): |
| 529 | self._graph = bt2_graph.Graph(self._get_greatest_operative_mip_version()) |
| 530 | self._graph.add_port_added_listener(self._graph_port_added) |
| 531 | self._muxer_comp = self._create_muxer() |
| 532 | |
| 533 | if self._begin_ns is not None or self._end_ns is not None: |
| 534 | trimmer_comp = self._create_trimmer(self._begin_ns, self._end_ns, "trimmer") |
| 535 | self._graph.connect_ports( |
| 536 | self._muxer_comp.output_ports["out"], trimmer_comp.input_ports["in"] |
| 537 | ) |
| 538 | last_flt_out_port = trimmer_comp.output_ports["out"] |
| 539 | else: |
| 540 | last_flt_out_port = self._muxer_comp.output_ports["out"] |
| 541 | |
| 542 | # create extra filter components (chained) |
| 543 | for comp_spec in self._flt_comp_specs: |
| 544 | comp = self._create_comp(comp_spec) |
| 545 | self._flt_comps_and_specs.append(_ComponentAndSpec(comp, comp_spec)) |
| 546 | |
| 547 | # connect the extra filter chain |
| 548 | for comp_and_spec in self._flt_comps_and_specs: |
| 549 | in_port = list(comp_and_spec.comp.input_ports.values())[0] |
| 550 | out_port = list(comp_and_spec.comp.output_ports.values())[0] |
| 551 | self._graph.connect_ports(last_flt_out_port, in_port) |
| 552 | last_flt_out_port = out_port |
| 553 | |
| 554 | # Here we create the components, self._graph_port_added() is |
| 555 | # called when they add ports, but the callback returns early |
| 556 | # because self._connect_ports is False. This is because the |
| 557 | # self._graph_port_added() could not find the associated source |
| 558 | # component specification in self._src_comps_and_specs because |
| 559 | # it does not exist yet (it needs the created component to |
| 560 | # exist). |
| 561 | for comp_spec in self._src_comp_specs: |
| 562 | comp = self._create_comp(comp_spec) |
| 563 | self._src_comps_and_specs.append(_ComponentAndSpec(comp, comp_spec)) |
| 564 | |
| 565 | if self._stream_intersection_mode: |
| 566 | self._compute_stream_intersections() |
| 567 | |
| 568 | # Now we connect the ports which exist at this point. We allow |
| 569 | # self._graph_port_added() to automatically connect _new_ ports. |
| 570 | self._connect_ports = True |
| 571 | |
| 572 | for comp_and_spec in self._src_comps_and_specs: |
| 573 | # Keep a separate list because comp_and_spec.output_ports |
| 574 | # could change during the connection of one of its ports. |
| 575 | # Any new port is handled by self._graph_port_added(). |
| 576 | out_ports = [port for port in comp_and_spec.comp.output_ports.values()] |
| 577 | |
| 578 | for out_port in out_ports: |
| 579 | if out_port.is_connected: |
| 580 | continue |
| 581 | |
| 582 | self._connect_src_comp_port(comp_and_spec.comp, out_port) |
| 583 | |
| 584 | # Add the proxy sink, passing our message list to share consumed |
| 585 | # messages with this trace collection message iterator. |
| 586 | sink = self._graph.add_component( |
| 587 | _TraceCollectionMessageIteratorProxySink, "proxy-sink", obj=self._msg_list |
| 588 | ) |
| 589 | sink_in_port = sink.input_ports["in"] |
| 590 | |
| 591 | # connect last filter to proxy sink |
| 592 | self._graph.connect_ports(last_flt_out_port, sink_in_port) |