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a5bc27032a
Fix #18 Similar to [the request for the same feature in Sentry](https://github.com/getsentry/sentry/issues/68426) SDK-side complaints: * https://github.com/getsentry/sentry-python/issues/377 * https://github.com/getsentry/sentry-python/issues/805 * https://github.com/getsentry/sentry-python/issues/1041 * https://github.com/getsentry/sentry-python/issues/1105 * https://github.com/getsentry/sentry-python/issues/2121 * https://github.com/getsentry/sentry-python/issues/2682 * https://github.com/getsentry/sentry-python/issues/3209 * https://github.com/getsentry/sentry-python/issues/3634 * https://github.com/getsentry/sentry-python/issues/3740
71 lines
2.6 KiB
Python
71 lines
2.6 KiB
Python
class IncompleteList(list):
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def __init__(self, lst, cnt):
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super().__init__(lst)
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self.incomplete = cnt
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class IncompleteDict(dict):
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def __init__(self, dct, cnt):
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super().__init__(dct)
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self.incomplete = cnt
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def annotate_with_meta(values, meta_values):
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"""
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Use the meta_values (values attr of a "_meta" key) to annotate the values, in particular to add information about
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which lists/dicts have been trimmed.
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This depends on an ondocumented API of the Python Sentry SDK; we've just reverse-engineered the format of the
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"_meta" values.
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From the Sentry SDK source code, one could conclude that there are various pieces of info (I've seen "rem", "len",
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"val", and "err" mentioned as keys and "!limit" as a value) but I've not actually been able to get the Sentry SDK
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to emit records with the "!limit" value, and there are no tests for it, so I'm not sure how it's supposed to work.
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For now, I'm basing myself on what I've actually seen in the wild. (Also: I'm less worried about pruning in depth
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than in breadth, because in the case of in-depth pruning the fallback is still to repr() the remaining stuff, so
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you don't end up with silently trimmed data).
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See also:
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https://github.com/getsentry/relay/blob/b3ecbb980c63be542547cf346f433061f69c4bba/relay-protocol/src/meta.rs#L417
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The values are modified in-place.
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"""
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for str_i, meta_value in meta_values.items():
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annotate_exception_with_meta(values[int(str_i)], meta_value)
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def annotate_exception_with_meta(exception, meta_value):
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frames = exception.get("stacktrace", {}).get("frames", {})
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meta_frames = meta_value.get("stacktrace", {}).get("frames", {})
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for str_i, meta_frame in meta_frames.items():
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annotate_frame_with_meta(frames[int(str_i)], meta_frame)
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def annotate_frame_with_meta(frame, meta_frame):
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frame["vars"] = annotate_var_with_meta(frame["vars"], meta_frame["vars"])
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def annotate_var_with_meta(var, meta_var):
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"""
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'var' is a (potentially trimmed) list or dict, 'meta_var' is a dict describing the trimming.
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"""
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assert isinstance(var, (list, dict))
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if isinstance(var, list):
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Incomplete = IncompleteList
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at = lambda k: int(k) # noqa; (for some reason the meta_k for list lookups is stored as a string)
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else: # isinstance(var, dict):
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Incomplete = IncompleteDict
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at = lambda k: k # noqa
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for meta_k, meta_v in meta_var.items():
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if meta_k == "":
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var = Incomplete(var, meta_v["len"] - len(var))
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else:
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var[at(meta_k)] = annotate_var_with_meta(var[at(meta_k)], meta_v)
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return var
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