esp-idf/tools/idf_monitor_base/coredump.py
2021-06-28 13:56:39 +02:00

128 lines
5.3 KiB
Python

import os
import queue
import subprocess
import sys
import tempfile
from contextlib import contextmanager
from typing import Generator
from .constants import COREDUMP_SCRIPT, TAG_KEY
from .output_helpers import Logger, yellow_print
from .web_socket_client import WebSocketClient
# coredump related messages
COREDUMP_UART_START = b'================= CORE DUMP START ================='
COREDUMP_UART_END = b'================= CORE DUMP END ================='
COREDUMP_UART_PROMPT = b'Press Enter to print core dump to UART...'
# coredump states
COREDUMP_IDLE = 0
COREDUMP_READING = 1
COREDUMP_DONE = 2
# coredump decoding options
COREDUMP_DECODE_DISABLE = 'disable'
COREDUMP_DECODE_INFO = 'info'
class CoreDump:
def __init__(self, decode_coredumps, event_queue, logger, websocket_client, elf_file):
# type: (str, queue.Queue, Logger, WebSocketClient, str) -> None
self._coredump_buffer = b''
self._decode_coredumps = decode_coredumps
self.event_queue = event_queue
self._reading_coredump = COREDUMP_IDLE
self.logger = logger
self.websocket_client = websocket_client
self.elf_file = elf_file
def _process_coredump(self): # type: () -> None
if self._decode_coredumps != COREDUMP_DECODE_INFO:
raise NotImplementedError('process_coredump: %s not implemented' % self._decode_coredumps)
coredump_file = None
try:
# On Windows, the temporary file can't be read unless it is closed.
# Set delete=False and delete the file manually later.
with tempfile.NamedTemporaryFile(mode='wb', delete=False) as coredump_file:
coredump_file.write(self._coredump_buffer)
coredump_file.flush()
if self.websocket_client:
self.logger.output_enabled = True
yellow_print('Communicating through WebSocket')
self.websocket_client.send({'event': 'coredump',
'file': coredump_file.name,
'prog': self.elf_file})
yellow_print('Waiting for debug finished event')
self.websocket_client.wait([('event', 'debug_finished')])
yellow_print('Communications through WebSocket is finished')
else:
cmd = [sys.executable,
COREDUMP_SCRIPT,
'info_corefile',
'--core', coredump_file.name,
'--core-format', 'b64',
self.elf_file
]
output = subprocess.check_output(cmd, stderr=subprocess.STDOUT)
self.logger.output_enabled = True
self.logger.print(output) # noqa: E999
self.logger.output_enabled = False # Will be reenabled in check_coredump_trigger_after_print
except subprocess.CalledProcessError as e:
yellow_print('Failed to run espcoredump script: {}\n{}\n\n'.format(e, e.output))
self.logger.output_enabled = True
self.logger.print(COREDUMP_UART_START + b'\n')
self.logger.print(self._coredump_buffer)
# end line will be printed in handle_serial_input
finally:
if coredump_file is not None:
try:
os.unlink(coredump_file.name)
except OSError as e:
yellow_print('Couldn\'t remote temporary core dump file ({})'.format(e))
def _check_coredump_trigger_before_print(self, line): # type: (bytes) -> None
if self._decode_coredumps == COREDUMP_DECODE_DISABLE:
return
if COREDUMP_UART_PROMPT in line:
yellow_print('Initiating core dump!')
self.event_queue.put((TAG_KEY, '\n'))
return
if COREDUMP_UART_START in line:
yellow_print('Core dump started (further output muted)')
self._reading_coredump = COREDUMP_READING
self._coredump_buffer = b''
self.logger.output_enabled = False
return
if COREDUMP_UART_END in line:
self._reading_coredump = COREDUMP_DONE
yellow_print('\nCore dump finished!')
self._process_coredump()
return
if self._reading_coredump == COREDUMP_READING:
kb = 1024
buffer_len_kb = len(self._coredump_buffer) // kb
self._coredump_buffer += line.replace(b'\r', b'') + b'\n'
new_buffer_len_kb = len(self._coredump_buffer) // kb
if new_buffer_len_kb > buffer_len_kb:
yellow_print('Received %3d kB...' % new_buffer_len_kb, newline='\r')
def _check_coredump_trigger_after_print(self): # type: () -> None
if self._decode_coredumps == COREDUMP_DECODE_DISABLE:
return
# Re-enable output after the last line of core dump has been consumed
if not self.logger.output_enabled and self._reading_coredump == COREDUMP_DONE:
self._reading_coredump = COREDUMP_IDLE
self.logger.output_enabled = True
self._coredump_buffer = b''
@contextmanager
def check(self, line): # type: (bytes) -> Generator
self._check_coredump_trigger_before_print(line)
try:
yield
finally:
self._check_coredump_trigger_after_print()