102 lines
3.5 KiB
Python
102 lines
3.5 KiB
Python
from typing import Any, Mapping
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import tracerite.html
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from html5tagger import E
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from tracerite import html_traceback, inspector
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from sanic.request import Request
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from .base import BasePage
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# Avoid showing the request in the traceback variable inspectors
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inspector.blacklist_types += (Request,)
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class ErrorPage(BasePage):
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STYLE_APPEND = tracerite.html.style
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def __init__(
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self,
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title: str,
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text: str,
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request: Request,
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exc: Exception,
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full: bool,
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) -> None:
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super().__init__()
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# Internal server errors come with the text of the exception, which we don't want to show to the user.
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# FIXME: This needs to be done some place else but I am not digging into that now.
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if "Internal Server Error" in title:
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text = "The application encountered an unexpected error and could not continue."
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self.TITLE = E.strong(request.app.name)(" cannot handle your request")
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self.title = title
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self.text = text
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self.request = request
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self.exc = exc
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self.full = full
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def _head(self) -> None:
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self.doc._script(tracerite.html.javascript)
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super()._head()
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def _body(self) -> None:
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debug = self.request.app.debug
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try:
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route_name = self.request.route.name
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except AttributeError:
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route_name = "[route not found]"
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with self.doc.main:
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self.doc.h1(f"⚠️ {self.title}").p(self.text)
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# Show context details if available on the exception
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context = getattr(self.exc, "context", None)
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if context:
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self._key_value_table(
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"Issue context", "exception-context", context
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)
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if not debug:
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return
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# Show additional details in debug mode,
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# open by default for 500 errors
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with self.doc.details(open=self.full, class_="smalltext"):
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# Show extra details if available on the exception
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extra = getattr(self.exc, "extra", None)
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if extra:
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self._key_value_table(
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"Exception extra data", "exception-extra", extra
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)
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self.doc.summary(
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"Details for developers (Sanic debug mode only)"
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)
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if self.exc:
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self.doc.h2(f"Exception in {route_name}:")
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# skip_outmost=1 to hide Sanic.handle_request
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self.doc(
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html_traceback(
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self.exc, skip_outmost=1, include_js_css=False
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)
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)
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self._key_value_table(
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f"{self.request.method} {self.request.path}",
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"request-headers",
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self.request.headers,
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)
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def _key_value_table(
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self, title: str, table_id: str, data: Mapping[str, Any]
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) -> None:
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with self.doc.table(id=table_id, class_="key-value-table smalltext"):
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self.doc.caption(title)
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for key, value in data.items():
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try:
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self.doc.tr.td(key, class_="nobr key").td(value)
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# Printing values may cause a new exception, so suppress it
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except Exception:
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self.doc.tr.td(key, class_="nobr key").td.em(
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"Unable to display value"
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)
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