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664 lines
24 KiB
664 lines
24 KiB
import os
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import re
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import sys
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import typing as t
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import zmq
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from IPython.core.getipython import get_ipython
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from IPython.core.inputtransformer2 import leading_empty_lines
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from tornado.locks import Event
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from tornado.queues import Queue
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from zmq.utils import jsonapi
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try:
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from jupyter_client.jsonutil import json_default
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except ImportError:
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from jupyter_client.jsonutil import date_default as json_default
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from .compiler import get_file_name, get_tmp_directory, get_tmp_hash_seed
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try:
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# This import is required to have the next ones working...
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from debugpy.server import api # noqa
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from _pydevd_bundle import pydevd_frame_utils # isort: skip
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from _pydevd_bundle.pydevd_suspended_frames import ( # isort: skip
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SuspendedFramesManager,
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_FramesTracker,
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)
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_is_debugpy_available = True
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except ImportError:
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_is_debugpy_available = False
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# Required for backwards compatiblity
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ROUTING_ID = getattr(zmq, "ROUTING_ID", None) or zmq.IDENTITY
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class _FakeCode:
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def __init__(self, co_filename, co_name):
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self.co_filename = co_filename
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self.co_name = co_name
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class _FakeFrame:
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def __init__(self, f_code, f_globals, f_locals):
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self.f_code = f_code
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self.f_globals = f_globals
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self.f_locals = f_locals
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self.f_back = None
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class _DummyPyDB:
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def __init__(self):
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from _pydevd_bundle.pydevd_api import PyDevdAPI
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self.variable_presentation = PyDevdAPI.VariablePresentation()
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class VariableExplorer:
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def __init__(self):
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self.suspended_frame_manager = SuspendedFramesManager()
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self.py_db = _DummyPyDB()
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self.tracker = _FramesTracker(self.suspended_frame_manager, self.py_db)
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self.frame = None
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def track(self):
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var = get_ipython().user_ns
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self.frame = _FakeFrame(_FakeCode("<module>", get_file_name("sys._getframe()")), var, var)
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self.tracker.track("thread1", pydevd_frame_utils.create_frames_list_from_frame(self.frame))
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def untrack_all(self):
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self.tracker.untrack_all()
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def get_children_variables(self, variable_ref=None):
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var_ref = variable_ref
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if not var_ref:
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var_ref = id(self.frame)
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variables = self.suspended_frame_manager.get_variable(var_ref)
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return [x.get_var_data() for x in variables.get_children_variables()]
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class DebugpyMessageQueue:
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HEADER = "Content-Length: "
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HEADER_LENGTH = 16
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SEPARATOR = "\r\n\r\n"
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SEPARATOR_LENGTH = 4
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def __init__(self, event_callback, log):
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self.tcp_buffer = ""
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self._reset_tcp_pos()
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self.event_callback = event_callback
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self.message_queue: Queue[t.Any] = Queue()
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self.log = log
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def _reset_tcp_pos(self):
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self.header_pos = -1
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self.separator_pos = -1
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self.message_size = 0
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self.message_pos = -1
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def _put_message(self, raw_msg):
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self.log.debug("QUEUE - _put_message:")
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msg = t.cast(t.Dict[str, t.Any], jsonapi.loads(raw_msg))
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if msg["type"] == "event":
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self.log.debug("QUEUE - received event:")
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self.log.debug(msg)
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self.event_callback(msg)
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else:
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self.log.debug("QUEUE - put message:")
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self.log.debug(msg)
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self.message_queue.put_nowait(msg)
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def put_tcp_frame(self, frame):
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self.tcp_buffer += frame
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self.log.debug("QUEUE - received frame")
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while True:
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# Finds header
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if self.header_pos == -1:
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self.header_pos = self.tcp_buffer.find(DebugpyMessageQueue.HEADER)
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if self.header_pos == -1:
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return
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self.log.debug("QUEUE - found header at pos %i", self.header_pos)
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# Finds separator
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if self.separator_pos == -1:
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hint = self.header_pos + DebugpyMessageQueue.HEADER_LENGTH
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self.separator_pos = self.tcp_buffer.find(DebugpyMessageQueue.SEPARATOR, hint)
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if self.separator_pos == -1:
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return
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self.log.debug("QUEUE - found separator at pos %i", self.separator_pos)
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if self.message_pos == -1:
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size_pos = self.header_pos + DebugpyMessageQueue.HEADER_LENGTH
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self.message_pos = self.separator_pos + DebugpyMessageQueue.SEPARATOR_LENGTH
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self.message_size = int(self.tcp_buffer[size_pos : self.separator_pos])
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self.log.debug("QUEUE - found message at pos %i", self.message_pos)
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self.log.debug("QUEUE - message size is %i", self.message_size)
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if len(self.tcp_buffer) - self.message_pos < self.message_size:
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return
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self._put_message(
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self.tcp_buffer[self.message_pos : self.message_pos + self.message_size]
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)
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if len(self.tcp_buffer) - self.message_pos == self.message_size:
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self.log.debug("QUEUE - resetting tcp_buffer")
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self.tcp_buffer = ""
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self._reset_tcp_pos()
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return
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else:
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self.tcp_buffer = self.tcp_buffer[self.message_pos + self.message_size :]
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self.log.debug("QUEUE - slicing tcp_buffer: %s", self.tcp_buffer)
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self._reset_tcp_pos()
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async def get_message(self):
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return await self.message_queue.get()
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class DebugpyClient:
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def __init__(self, log, debugpy_stream, event_callback):
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self.log = log
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self.debugpy_stream = debugpy_stream
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self.event_callback = event_callback
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self.message_queue = DebugpyMessageQueue(self._forward_event, self.log)
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self.debugpy_host = "127.0.0.1"
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self.debugpy_port = -1
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self.routing_id = None
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self.wait_for_attach = True
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self.init_event = Event()
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self.init_event_seq = -1
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def _get_endpoint(self):
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host, port = self.get_host_port()
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return "tcp://" + host + ":" + str(port)
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def _forward_event(self, msg):
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if msg["event"] == "initialized":
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self.init_event.set()
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self.init_event_seq = msg["seq"]
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self.event_callback(msg)
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def _send_request(self, msg):
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if self.routing_id is None:
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self.routing_id = self.debugpy_stream.socket.getsockopt(ROUTING_ID)
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content = jsonapi.dumps(
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msg,
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default=json_default,
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ensure_ascii=False,
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allow_nan=False,
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)
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content_length = str(len(content))
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buf = (DebugpyMessageQueue.HEADER + content_length + DebugpyMessageQueue.SEPARATOR).encode(
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"ascii"
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)
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buf += content
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self.log.debug("DEBUGPYCLIENT:")
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self.log.debug(self.routing_id)
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self.log.debug(buf)
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self.debugpy_stream.send_multipart((self.routing_id, buf))
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async def _wait_for_response(self):
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# Since events are never pushed to the message_queue
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# we can safely assume the next message in queue
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# will be an answer to the previous request
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return await self.message_queue.get_message()
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async def _handle_init_sequence(self):
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# 1] Waits for initialized event
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await self.init_event.wait()
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# 2] Sends configurationDone request
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configurationDone = {
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"type": "request",
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"seq": int(self.init_event_seq) + 1,
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"command": "configurationDone",
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}
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self._send_request(configurationDone)
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# 3] Waits for configurationDone response
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await self._wait_for_response()
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# 4] Waits for attachResponse and returns it
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attach_rep = await self._wait_for_response()
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return attach_rep
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def get_host_port(self):
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if self.debugpy_port == -1:
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socket = self.debugpy_stream.socket
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socket.bind_to_random_port("tcp://" + self.debugpy_host)
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self.endpoint = socket.getsockopt(zmq.LAST_ENDPOINT).decode("utf-8")
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socket.unbind(self.endpoint)
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index = self.endpoint.rfind(":")
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self.debugpy_port = self.endpoint[index + 1 :]
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return self.debugpy_host, self.debugpy_port
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def connect_tcp_socket(self):
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self.debugpy_stream.socket.connect(self._get_endpoint())
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self.routing_id = self.debugpy_stream.socket.getsockopt(ROUTING_ID)
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def disconnect_tcp_socket(self):
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self.debugpy_stream.socket.disconnect(self._get_endpoint())
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self.routing_id = None
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self.init_event = Event()
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self.init_event_seq = -1
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self.wait_for_attach = True
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def receive_dap_frame(self, frame):
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self.message_queue.put_tcp_frame(frame)
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async def send_dap_request(self, msg):
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self._send_request(msg)
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if self.wait_for_attach and msg["command"] == "attach":
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rep = await self._handle_init_sequence()
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self.wait_for_attach = False
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return rep
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else:
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rep = await self._wait_for_response()
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self.log.debug("DEBUGPYCLIENT - returning:")
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self.log.debug(rep)
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return rep
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class Debugger:
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# Requests that requires that the debugger has started
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started_debug_msg_types = [
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"dumpCell",
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"setBreakpoints",
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"source",
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"stackTrace",
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"variables",
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"attach",
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"configurationDone",
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]
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# Requests that can be handled even if the debugger is not running
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static_debug_msg_types = ["debugInfo", "inspectVariables", "richInspectVariables", "modules"]
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def __init__(
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self, log, debugpy_stream, event_callback, shell_socket, session, just_my_code=True
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):
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self.log = log
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self.debugpy_client = DebugpyClient(log, debugpy_stream, self._handle_event)
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self.shell_socket = shell_socket
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self.session = session
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self.is_started = False
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self.event_callback = event_callback
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self.just_my_code = just_my_code
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self.stopped_queue: Queue[t.Any] = Queue()
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self.started_debug_handlers = {}
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for msg_type in Debugger.started_debug_msg_types:
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self.started_debug_handlers[msg_type] = getattr(self, msg_type)
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self.static_debug_handlers = {}
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for msg_type in Debugger.static_debug_msg_types:
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self.static_debug_handlers[msg_type] = getattr(self, msg_type)
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self.breakpoint_list = {}
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self.stopped_threads = set()
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self.debugpy_initialized = False
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self._removed_cleanup = {}
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self.debugpy_host = "127.0.0.1"
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self.debugpy_port = 0
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self.endpoint = None
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self.variable_explorer = VariableExplorer()
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def _handle_event(self, msg):
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if msg["event"] == "stopped":
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if msg["body"]["allThreadsStopped"]:
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self.stopped_queue.put_nowait(msg)
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# Do not forward the event now, will be done in the handle_stopped_event
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return
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else:
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self.stopped_threads.add(msg["body"]["threadId"])
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self.event_callback(msg)
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elif msg["event"] == "continued":
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if msg["body"]["allThreadsContinued"]:
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self.stopped_threads = set()
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else:
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self.stopped_threads.remove(msg["body"]["threadId"])
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self.event_callback(msg)
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else:
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self.event_callback(msg)
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async def _forward_message(self, msg):
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return await self.debugpy_client.send_dap_request(msg)
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def _build_variables_response(self, request, variables):
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var_list = [var for var in variables if self.accept_variable(var["name"])]
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reply = {
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"seq": request["seq"],
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"type": "response",
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"request_seq": request["seq"],
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"success": True,
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"command": request["command"],
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"body": {"variables": var_list},
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}
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return reply
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|
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def _accept_stopped_thread(self, thread_name):
|
|
# TODO: identify Thread-2, Thread-3 and Thread-4. These are NOT
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# Control, IOPub or Heartbeat threads
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forbid_list = ["IPythonHistorySavingThread", "Thread-2", "Thread-3", "Thread-4"]
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return thread_name not in forbid_list
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|
|
async def handle_stopped_event(self):
|
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# Wait for a stopped event message in the stopped queue
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|
# This message is used for triggering the 'threads' request
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|
event = await self.stopped_queue.get()
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req = {"seq": event["seq"] + 1, "type": "request", "command": "threads"}
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rep = await self._forward_message(req)
|
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for thread in rep["body"]["threads"]:
|
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if self._accept_stopped_thread(thread["name"]):
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self.stopped_threads.add(thread["id"])
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self.event_callback(event)
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|
|
@property
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def tcp_client(self):
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return self.debugpy_client
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def start(self):
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if not self.debugpy_initialized:
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tmp_dir = get_tmp_directory()
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if not os.path.exists(tmp_dir):
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os.makedirs(tmp_dir)
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host, port = self.debugpy_client.get_host_port()
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code = "import debugpy;"
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code += 'debugpy.listen(("' + host + '",' + port + "))"
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content = {"code": code, "silent": True}
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self.session.send(
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self.shell_socket,
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"execute_request",
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content,
|
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None,
|
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(self.shell_socket.getsockopt(ROUTING_ID)),
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)
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|
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ident, msg = self.session.recv(self.shell_socket, mode=0)
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self.debugpy_initialized = msg["content"]["status"] == "ok"
|
|
|
|
# Don't remove leading empty lines when debugging so the breakpoints are correctly positioned
|
|
cleanup_transforms = get_ipython().input_transformer_manager.cleanup_transforms
|
|
if leading_empty_lines in cleanup_transforms:
|
|
index = cleanup_transforms.index(leading_empty_lines)
|
|
self._removed_cleanup[index] = cleanup_transforms.pop(index)
|
|
|
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self.debugpy_client.connect_tcp_socket()
|
|
return self.debugpy_initialized
|
|
|
|
def stop(self):
|
|
self.debugpy_client.disconnect_tcp_socket()
|
|
|
|
# Restore remove cleanup transformers
|
|
cleanup_transforms = get_ipython().input_transformer_manager.cleanup_transforms
|
|
for index in sorted(self._removed_cleanup):
|
|
func = self._removed_cleanup.pop(index)
|
|
cleanup_transforms.insert(index, func)
|
|
|
|
async def dumpCell(self, message):
|
|
code = message["arguments"]["code"]
|
|
file_name = get_file_name(code)
|
|
|
|
with open(file_name, "w", encoding="utf-8") as f:
|
|
f.write(code)
|
|
|
|
reply = {
|
|
"type": "response",
|
|
"request_seq": message["seq"],
|
|
"success": True,
|
|
"command": message["command"],
|
|
"body": {"sourcePath": file_name},
|
|
}
|
|
return reply
|
|
|
|
async def setBreakpoints(self, message):
|
|
source = message["arguments"]["source"]["path"]
|
|
self.breakpoint_list[source] = message["arguments"]["breakpoints"]
|
|
return await self._forward_message(message)
|
|
|
|
async def source(self, message):
|
|
reply = {"type": "response", "request_seq": message["seq"], "command": message["command"]}
|
|
source_path = message["arguments"]["source"]["path"]
|
|
if os.path.isfile(source_path):
|
|
with open(source_path, encoding="utf-8") as f:
|
|
reply["success"] = True
|
|
reply["body"] = {"content": f.read()}
|
|
else:
|
|
reply["success"] = False
|
|
reply["message"] = "source unavailable"
|
|
reply["body"] = {}
|
|
|
|
return reply
|
|
|
|
async def stackTrace(self, message):
|
|
reply = await self._forward_message(message)
|
|
# The stackFrames array can have the following content:
|
|
# { frames from the notebook}
|
|
# ...
|
|
# { 'id': xxx, 'name': '<module>', ... } <= this is the first frame of the code from the notebook
|
|
# { frames from ipykernel }
|
|
# ...
|
|
# {'id': yyy, 'name': '<module>', ... } <= this is the first frame of ipykernel code
|
|
# or only the frames from the notebook.
|
|
# We want to remove all the frames from ipykernel when they are present.
|
|
try:
|
|
sf_list = reply["body"]["stackFrames"]
|
|
module_idx = len(sf_list) - next(
|
|
i for i, v in enumerate(reversed(sf_list), 1) if v["name"] == "<module>" and i != 1
|
|
)
|
|
reply["body"]["stackFrames"] = reply["body"]["stackFrames"][: module_idx + 1]
|
|
except StopIteration:
|
|
pass
|
|
return reply
|
|
|
|
def accept_variable(self, variable_name):
|
|
forbid_list = [
|
|
"__name__",
|
|
"__doc__",
|
|
"__package__",
|
|
"__loader__",
|
|
"__spec__",
|
|
"__annotations__",
|
|
"__builtins__",
|
|
"__builtin__",
|
|
"__display__",
|
|
"get_ipython",
|
|
"debugpy",
|
|
"exit",
|
|
"quit",
|
|
"In",
|
|
"Out",
|
|
"_oh",
|
|
"_dh",
|
|
"_",
|
|
"__",
|
|
"___",
|
|
]
|
|
cond = variable_name not in forbid_list
|
|
cond = cond and not bool(re.search(r"^_\d", variable_name))
|
|
cond = cond and variable_name[0:2] != "_i"
|
|
return cond
|
|
|
|
async def variables(self, message):
|
|
reply = {}
|
|
if not self.stopped_threads:
|
|
variables = self.variable_explorer.get_children_variables(
|
|
message["arguments"]["variablesReference"]
|
|
)
|
|
return self._build_variables_response(message, variables)
|
|
else:
|
|
reply = await self._forward_message(message)
|
|
# TODO : check start and count arguments work as expected in debugpy
|
|
reply["body"]["variables"] = [
|
|
var for var in reply["body"]["variables"] if self.accept_variable(var["name"])
|
|
]
|
|
return reply
|
|
|
|
async def attach(self, message):
|
|
host, port = self.debugpy_client.get_host_port()
|
|
message["arguments"]["connect"] = {"host": host, "port": port}
|
|
message["arguments"]["logToFile"] = True
|
|
# Experimental option to break in non-user code.
|
|
# The ipykernel source is in the call stack, so the user
|
|
# has to manipulate the step-over and step-into in a wize way.
|
|
# Set debugOptions for breakpoints in python standard library source.
|
|
if not self.just_my_code:
|
|
message["arguments"]["debugOptions"] = ["DebugStdLib"]
|
|
return await self._forward_message(message)
|
|
|
|
async def configurationDone(self, message):
|
|
reply = {
|
|
"seq": message["seq"],
|
|
"type": "response",
|
|
"request_seq": message["seq"],
|
|
"success": True,
|
|
"command": message["command"],
|
|
}
|
|
return reply
|
|
|
|
async def debugInfo(self, message):
|
|
breakpoint_list = []
|
|
for key, value in self.breakpoint_list.items():
|
|
breakpoint_list.append({"source": key, "breakpoints": value})
|
|
reply = {
|
|
"type": "response",
|
|
"request_seq": message["seq"],
|
|
"success": True,
|
|
"command": message["command"],
|
|
"body": {
|
|
"isStarted": self.is_started,
|
|
"hashMethod": "Murmur2",
|
|
"hashSeed": get_tmp_hash_seed(),
|
|
"tmpFilePrefix": get_tmp_directory() + os.sep,
|
|
"tmpFileSuffix": ".py",
|
|
"breakpoints": breakpoint_list,
|
|
"stoppedThreads": list(self.stopped_threads),
|
|
"richRendering": True,
|
|
"exceptionPaths": ["Python Exceptions"],
|
|
},
|
|
}
|
|
return reply
|
|
|
|
async def inspectVariables(self, message):
|
|
self.variable_explorer.untrack_all()
|
|
# looks like the implementation of untrack_all in ptvsd
|
|
# destroys objects we nee din track. We have no choice but
|
|
# reinstantiate the object
|
|
self.variable_explorer = VariableExplorer()
|
|
self.variable_explorer.track()
|
|
variables = self.variable_explorer.get_children_variables()
|
|
return self._build_variables_response(message, variables)
|
|
|
|
async def richInspectVariables(self, message):
|
|
reply = {
|
|
"type": "response",
|
|
"sequence_seq": message["seq"],
|
|
"success": False,
|
|
"command": message["command"],
|
|
}
|
|
|
|
var_name = message["arguments"]["variableName"]
|
|
valid_name = str.isidentifier(var_name)
|
|
if not valid_name:
|
|
reply["body"] = {"data": {}, "metadata": {}}
|
|
if var_name == "special variables" or var_name == "function variables":
|
|
reply["success"] = True
|
|
return reply
|
|
|
|
repr_data = {}
|
|
repr_metadata = {}
|
|
if not self.stopped_threads:
|
|
# The code did not hit a breakpoint, we use the intepreter
|
|
# to get the rich representation of the variable
|
|
result = get_ipython().user_expressions({var_name: var_name})[var_name]
|
|
if result.get("status", "error") == "ok":
|
|
repr_data = result.get("data", {})
|
|
repr_metadata = result.get("metadata", {})
|
|
else:
|
|
# The code has stopped on a breakpoint, we use the setExpression
|
|
# request to get the rich representation of the variable
|
|
code = f"get_ipython().display_formatter.format({var_name})"
|
|
frame_id = message["arguments"]["frameId"]
|
|
seq = message["seq"]
|
|
reply = await self._forward_message(
|
|
{
|
|
"type": "request",
|
|
"command": "evaluate",
|
|
"seq": seq + 1,
|
|
"arguments": {"expression": code, "frameId": frame_id, "context": "clipboard"},
|
|
}
|
|
)
|
|
if reply["success"]:
|
|
repr_data, repr_metadata = eval(reply["body"]["result"], {}, {})
|
|
|
|
body = {
|
|
"data": repr_data,
|
|
"metadata": {k: v for k, v in repr_metadata.items() if k in repr_data},
|
|
}
|
|
|
|
reply["body"] = body
|
|
reply["success"] = True
|
|
return reply
|
|
|
|
async def modules(self, message):
|
|
modules = list(sys.modules.values())
|
|
startModule = message.get("startModule", 0)
|
|
moduleCount = message.get("moduleCount", len(modules))
|
|
mods = []
|
|
for i in range(startModule, moduleCount):
|
|
module = modules[i]
|
|
filename = getattr(getattr(module, "__spec__", None), "origin", None)
|
|
if filename and filename.endswith(".py"):
|
|
mods.append({"id": i, "name": module.__name__, "path": filename})
|
|
|
|
reply = {"body": {"modules": mods, "totalModules": len(modules)}}
|
|
return reply
|
|
|
|
async def process_request(self, message):
|
|
reply = {}
|
|
|
|
if message["command"] == "initialize":
|
|
if self.is_started:
|
|
self.log.info("The debugger has already started")
|
|
else:
|
|
self.is_started = self.start()
|
|
if self.is_started:
|
|
self.log.info("The debugger has started")
|
|
else:
|
|
reply = {
|
|
"command": "initialize",
|
|
"request_seq": message["seq"],
|
|
"seq": 3,
|
|
"success": False,
|
|
"type": "response",
|
|
}
|
|
|
|
handler = self.static_debug_handlers.get(message["command"], None)
|
|
if handler is not None:
|
|
reply = await handler(message)
|
|
elif self.is_started:
|
|
handler = self.started_debug_handlers.get(message["command"], None)
|
|
if handler is not None:
|
|
reply = await handler(message)
|
|
else:
|
|
reply = await self._forward_message(message)
|
|
|
|
if message["command"] == "disconnect":
|
|
self.stop()
|
|
self.breakpoint_list = {}
|
|
self.stopped_threads = set()
|
|
self.is_started = False
|
|
self.log.info("The debugger has stopped")
|
|
|
|
return reply
|