112 lines
3.8 KiB
Python
112 lines
3.8 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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ENDUSER_TEXT = """\
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We're sorry, but it looks like something went wrong. Please try refreshing \
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the page or navigating back to the homepage. If the issue persists, our \
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technical team is working to resolve it as soon as possible. We apologize \
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for the inconvenience and appreciate your patience.\
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"""
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class ErrorPage(BasePage):
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"""Page for displaying an error."""
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STYLE_APPEND = tracerite.html.style
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def __init__(
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self,
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debug: bool,
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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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) -> None:
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super().__init__(debug)
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name = request.app.name.replace("_", " ").strip()
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if name.islower():
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name = name.title()
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self.TITLE = f"Application {name} cannot handle your request"
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self.HEADING = E("Application ").strong(name)(
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" cannot handle your request"
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)
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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.details_open = not getattr(exc, "quiet", False)
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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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route_name = self.request.name or "[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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with self.doc.div(id="enduser"):
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self.doc.p(ENDUSER_TEXT).p.a("Front Page", href="/")
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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.details_open, 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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"Issue 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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with self.doc.div(class_="exception-wrapper"):
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self.doc.h2(f"Exception in {route_name}:")
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self.doc(
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html_traceback(self.exc, include_js_css=False)
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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.div(class_="key-value-display"):
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self.doc.h2(title)
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with self.doc.dl(id=table_id, class_="key-value-table smalltext"):
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for key, value in data.items():
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# Reading values may cause a new exception, so suppress it
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try:
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value = str(value)
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except Exception:
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value = E.em("Unable to display value")
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self.doc.dt.span(key, class_="nobr key").span(": ").dd(
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value
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)
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