202 lines
6.3 KiB
Python
202 lines
6.3 KiB
Python
import inspect
|
|
import logging
|
|
import sys
|
|
import traceback
|
|
from collections import Counter
|
|
from html import escape as escape_html
|
|
from types import FrameType, TracebackType
|
|
from typing import Union, Iterable, List
|
|
|
|
from stack_data import (
|
|
style_with_executing_node,
|
|
Options,
|
|
Line,
|
|
FrameInfo,
|
|
Variable,
|
|
RepeatedFrames,
|
|
)
|
|
from stack_data.utils import some_str
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
class Serializer:
|
|
def __init__(
|
|
self,
|
|
*,
|
|
options=None,
|
|
pygmented=False,
|
|
show_executing_node=True,
|
|
pygments_formatter_cls=None,
|
|
pygments_formatter_kwargs=None,
|
|
pygments_style="monokai",
|
|
executing_node_modifier="bg:#005080",
|
|
use_code_qualname=True,
|
|
strip_leading_indent=True,
|
|
html=False,
|
|
chain=True,
|
|
collapse_repeated_frames=True,
|
|
show_variables=False,
|
|
):
|
|
if options is None:
|
|
options = Options()
|
|
|
|
if pygmented and not options.pygments_formatter:
|
|
if show_executing_node:
|
|
pygments_style = style_with_executing_node(
|
|
pygments_style, executing_node_modifier
|
|
)
|
|
|
|
if pygments_formatter_cls is None:
|
|
if html:
|
|
from pygments.formatters.html import (
|
|
HtmlFormatter as pygments_formatter_cls,
|
|
)
|
|
else:
|
|
from pygments.formatters.terminal256 import (
|
|
Terminal256Formatter as pygments_formatter_cls,
|
|
)
|
|
|
|
options.pygments_formatter = pygments_formatter_cls(
|
|
style=pygments_style,
|
|
**pygments_formatter_kwargs or {},
|
|
)
|
|
|
|
self.pygmented = pygmented
|
|
self.use_code_qualname = use_code_qualname
|
|
self.strip_leading_indent = strip_leading_indent
|
|
self.html = html
|
|
self.chain = chain
|
|
self.options = options
|
|
self.collapse_repeated_frames = collapse_repeated_frames
|
|
self.show_variables = show_variables
|
|
|
|
def format_exception(self, e=None) -> List[dict]:
|
|
if e is None:
|
|
e = sys.exc_info()[1]
|
|
|
|
result = []
|
|
|
|
if self.chain:
|
|
if e.__cause__ is not None:
|
|
result = self.format_exception(e.__cause__)
|
|
result[-1]["tail"] = traceback._cause_message.strip()
|
|
elif e.__context__ is not None and not e.__suppress_context__:
|
|
result = self.format_exception(e.__context__)
|
|
result[-1]["tail"] = traceback._context_message.strip()
|
|
|
|
result.append(self.format_traceback_part(e))
|
|
return result
|
|
|
|
def format_traceback_part(self, e: BaseException) -> dict:
|
|
return dict(
|
|
frames=self.format_stack(e.__traceback__ or sys.exc_info()[2]),
|
|
exception=dict(
|
|
type=type(e).__name__,
|
|
message=some_str(e),
|
|
),
|
|
tail="",
|
|
)
|
|
|
|
def format_stack(self, frame_or_tb=None) -> List[dict]:
|
|
if frame_or_tb is None:
|
|
frame_or_tb = inspect.currentframe().f_back
|
|
|
|
return list(
|
|
self.format_stack_data(
|
|
FrameInfo.stack_data(
|
|
frame_or_tb,
|
|
self.options,
|
|
collapse_repeated_frames=self.collapse_repeated_frames,
|
|
)
|
|
)
|
|
)
|
|
|
|
def format_stack_data(
|
|
self, stack: Iterable[Union[FrameInfo, RepeatedFrames]]
|
|
) -> Iterable[dict]:
|
|
for item in stack:
|
|
if isinstance(item, FrameInfo):
|
|
if not self.should_include_frame(item):
|
|
continue
|
|
yield dict(type="frame", **self.format_frame(item))
|
|
else:
|
|
yield dict(type="repeated_frames", **self.format_repeated_frames(item))
|
|
|
|
def format_repeated_frames(self, repeated_frames: RepeatedFrames) -> dict:
|
|
counts = sorted(
|
|
Counter(repeated_frames.frame_keys).items(),
|
|
key=lambda item: (-item[1], item[0][0].co_name),
|
|
)
|
|
return dict(
|
|
frames=[
|
|
dict(
|
|
name=code.co_name,
|
|
lineno=lineno,
|
|
count=count,
|
|
)
|
|
for (code, lineno), count in counts
|
|
]
|
|
)
|
|
|
|
def format_frame(self, frame: Union[FrameInfo, FrameType, TracebackType]) -> dict:
|
|
if not isinstance(frame, FrameInfo):
|
|
frame = FrameInfo(frame, self.options)
|
|
|
|
result = dict(
|
|
name=(
|
|
frame.executing.code_qualname()
|
|
if self.use_code_qualname
|
|
else frame.code.co_name
|
|
),
|
|
filename=frame.filename,
|
|
lineno=frame.lineno,
|
|
lines=list(self.format_lines(frame.lines)),
|
|
)
|
|
if self.show_variables:
|
|
result["variables"] = list(self.format_variables(frame))
|
|
return result
|
|
|
|
def format_lines(self, lines):
|
|
for line in lines:
|
|
if isinstance(line, Line):
|
|
yield dict(type="line", **self.format_line(line))
|
|
else:
|
|
yield dict(type="line_gap")
|
|
|
|
def format_line(self, line: Line) -> dict:
|
|
return dict(
|
|
is_current=line.is_current,
|
|
lineno=line.lineno,
|
|
text=line.render(
|
|
pygmented=self.pygmented,
|
|
escape_html=self.html,
|
|
strip_leading_indent=self.strip_leading_indent,
|
|
),
|
|
)
|
|
|
|
def format_variables(self, frame_info: FrameInfo) -> Iterable[dict]:
|
|
try:
|
|
for var in sorted(frame_info.variables, key=lambda v: v.name):
|
|
yield self.format_variable(var)
|
|
except Exception: # pragma: no cover
|
|
log.exception("Error in getting frame variables")
|
|
|
|
def format_variable(self, var: Variable) -> dict:
|
|
return dict(
|
|
name=self.format_variable_part(var.name),
|
|
value=self.format_variable_part(self.format_variable_value(var.value)),
|
|
)
|
|
|
|
def format_variable_part(self, text):
|
|
if self.html:
|
|
return escape_html(text)
|
|
else:
|
|
return text
|
|
|
|
def format_variable_value(self, value) -> str:
|
|
return repr(value)
|
|
|
|
def should_include_frame(self, frame_info: FrameInfo) -> bool:
|
|
return True # pragma: no cover
|