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.............................................................................                                                  
                                                                                                                                                                                     import math
import sys
from array import array
from collections.abc import Mapping
from datetime import datetime
from typing import TYPE_CHECKING

from sentry_sdk.utils import (
    AnnotatedValue,
    capture_internal_exception,
    disable_capture_event,
    format_timestamp,
    safe_repr,
    strip_string,
)

if TYPE_CHECKING:
    from types import TracebackType
    from typing import Any, Callable, ContextManager, Dict, List, Optional, Type, Union

    from sentry_sdk._types import NotImplementedType

    Span = Dict[str, Any]

    ReprProcessor = Callable[[Any, Dict[str, Any]], Union[NotImplementedType, str]]
    Segment = Union[str, int]


# Bytes are technically not strings in Python 3, but we can serialize them
serializable_str_types = (str, bytes, bytearray, memoryview)


# Maximum length of JSON-serialized event payloads that can be safely sent
# before the server may reject the event due to its size. This is not intended
# to reflect actual values defined server-side, but rather only be an upper
# bound for events sent by the SDK.
#
# Can be overwritten if wanting to send more bytes, e.g. with a custom server.
# When changing this, keep in mind that events may be a little bit larger than
# this value due to attached metadata, so keep the number conservative.
MAX_EVENT_BYTES = 10**6

# Maximum depth and breadth of databags. Excess data will be trimmed. If
# max_request_body_size is "always", request bodies won't be trimmed.
MAX_DATABAG_DEPTH = 5
MAX_DATABAG_BREADTH = 10
CYCLE_MARKER = "<cyclic>"


global_repr_processors: "List[ReprProcessor]" = []


def add_global_repr_processor(processor: "ReprProcessor") -> None:
    global_repr_processors.append(processor)


sequence_types: "List[type]" = [tuple, list, set, frozenset, array]


def add_repr_sequence_type(ty: type) -> None:
    sequence_types.append(ty)


class Memo:
    __slots__ = ("_ids", "_objs")

    def __init__(self) -> None:
        self._ids: "Dict[int, Any]" = {}
        self._objs: "List[Any]" = []

    def memoize(self, obj: "Any") -> "ContextManager[bool]":
        self._objs.append(obj)
        return self

    def __enter__(self) -> bool:
        obj = self._objs[-1]
        if id(obj) in self._ids:
            return True
        else:
            self._ids[id(obj)] = obj
            return False

    def __exit__(
        self,
        ty: "Optional[Type[BaseException]]",
        value: "Optional[BaseException]",
        tb: "Optional[TracebackType]",
    ) -> None:
        self._ids.pop(id(self._objs.pop()), None)


def serialize(event: "Dict[str, Any]", **kwargs: "Any") -> "Dict[str, Any]":
    """
    A very smart serializer that takes a dict and emits a json-friendly dict.
    Currently used for serializing the final Event and also prematurely while fetching the stack
    local variables for each frame in a stacktrace.

    It works internally with 'databags' which are arbitrary data structures like Mapping, Sequence and Set.
    The algorithm itself is a recursive graph walk down the data structures it encounters.

    It has the following responsibilities:
    * Trimming databags and keeping them within MAX_DATABAG_BREADTH and MAX_DATABAG_DEPTH.
    * Calling safe_repr() on objects appropriately to keep them informative and readable in the final payload.
    * Annotating the payload with the _meta field whenever trimming happens.

    :param max_request_body_size: If set to "always", will never trim request bodies.
    :param max_value_length: The max length to strip strings to, or None to disable string truncation. Defaults to None.
    :param is_vars: If we're serializing vars early, we want to repr() things that are JSON-serializable to make their type more apparent. For example, it's useful to see the difference between a unicode-string and a bytestring when viewing a stacktrace.
    :param custom_repr: A custom repr function that runs before safe_repr on the object to be serialized. If it returns None or throws internally, we will fallback to safe_repr.

    """
    memo = Memo()
    path: "List[Segment]" = []
    meta_stack: "List[Dict[str, Any]]" = []

    keep_request_bodies: bool = kwargs.pop("max_request_body_size", None) == "always"
    max_value_length: "Optional[int]" = kwargs.pop("max_value_length", None)
    is_vars = kwargs.pop("is_vars", False)
    custom_repr: "Callable[..., Optional[str]]" = kwargs.pop("custom_repr", None)

    def _safe_repr_wrapper(value: "Any") -> str:
        try:
            repr_value = None
            if custom_repr is not None:
                repr_value = custom_repr(value)
            return repr_value or safe_repr(value)
        except Exception:
            return safe_repr(value)

    def _annotate(**meta: "Any") -> None:
        while len(meta_stack) <= len(path):
            try:
                segment = path[len(meta_stack) - 1]
                node = meta_stack[-1].setdefault(str(segment), {})
            except IndexError:
                node = {}

            meta_stack.append(node)

        meta_stack[-1].setdefault("", {}).update(meta)

    def _is_databag() -> "Optional[bool]":
        """
        A databag is any value that we need to trim.
        True for stuff like vars, request bodies, breadcrumbs and extra.

        :returns: `True` for "yes", `False` for :"no", `None` for "maybe soon".
        """
        try:
            if is_vars:
                return True

            is_request_body = _is_request_body()
            if is_request_body in (True, None):
                return is_request_body

            p0 = path[0]
            if p0 == "breadcrumbs" and path[1] == "values":
                path[2]
                return True

            if p0 == "extra":
                return True

        except IndexError:
            return None

        return False

    def _is_span_attribute() -> "Optional[bool]":
        try:
            if path[0] == "spans" and path[2] == "data":
                return True
        except IndexError:
            return None

        return False

    def _is_request_body() -> "Optional[bool]":
        try:
            if path[0] == "request" and path[1] == "data":
                return True
        except IndexError:
            return None

        return False

    def _serialize_node(
        obj: "Any",
        is_databag: "Optional[bool]" = None,
        is_request_body: "Optional[bool]" = None,
        should_repr_strings: "Optional[bool]" = None,
        segment: "Optional[Segment]" = None,
        remaining_breadth: "Optional[Union[int, float]]" = None,
        remaining_depth: "Optional[Union[int, float]]" = None,
    ) -> "Any":
        if segment is not None:
            path.append(segment)

        try:
            with memo.memoize(obj) as result:
                if result:
                    return CYCLE_MARKER

                return _serialize_node_impl(
                    obj,
                    is_databag=is_databag,
                    is_request_body=is_request_body,
                    should_repr_strings=should_repr_strings,
                    remaining_depth=remaining_depth,
                    remaining_breadth=remaining_breadth,
                )
        except BaseException:
            capture_internal_exception(sys.exc_info())

            if is_databag:
                return "<failed to serialize, use init(debug=True) to see error logs>"

            return None
        finally:
            if segment is not None:
                path.pop()
                del meta_stack[len(path) + 1 :]

    def _flatten_annotated(obj: "Any") -> "Any":
        if isinstance(obj, AnnotatedValue):
            _annotate(**obj.metadata)
            obj = obj.value
        return obj

    def _serialize_node_impl(
        obj: "Any",
        is_databag: "Optional[bool]",
        is_request_body: "Optional[bool]",
        should_repr_strings: "Optional[bool]",
        remaining_depth: "Optional[Union[float, int]]",
        remaining_breadth: "Optional[Union[float, int]]",
    ) -> "Any":
        if isinstance(obj, AnnotatedValue):
            should_repr_strings = False
        if should_repr_strings is None:
            should_repr_strings = is_vars

        if is_databag is None:
            is_databag = _is_databag()

        if is_request_body is None:
            is_request_body = _is_request_body()

        if is_databag:
            if is_request_body and keep_request_bodies:
                remaining_depth = float("inf")
                remaining_breadth = float("inf")
            else:
                if remaining_depth is None:
                    remaining_depth = MAX_DATABAG_DEPTH
                if remaining_breadth is None:
                    remaining_breadth = MAX_DATABAG_BREADTH

        obj = _flatten_annotated(obj)

        if remaining_depth is not None and remaining_depth <= 0:
            _annotate(rem=[["!limit", "x"]])
            if is_databag:
                return _flatten_annotated(
                    strip_string(_safe_repr_wrapper(obj), max_length=max_value_length)
                )
            return None

        is_span_attribute = _is_span_attribute()
        if (is_databag or is_span_attribute) and global_repr_processors:
            hints = {"memo": memo, "remaining_depth": remaining_depth}
            for processor in global_repr_processors:
                result = processor(obj, hints)
                if result is not NotImplemented:
                    return _flatten_annotated(result)

        sentry_repr = getattr(type(obj), "__sentry_repr__", None)

        if obj is None or isinstance(obj, (bool, int, float)):
            if should_repr_strings or (
                isinstance(obj, float) and (math.isinf(obj) or math.isnan(obj))
            ):
                return _safe_repr_wrapper(obj)
            else:
                return obj

        elif callable(sentry_repr):
            return sentry_repr(obj)

        elif isinstance(obj, datetime):
            return (
                str(format_timestamp(obj))
                if not should_repr_strings
                else _safe_repr_wrapper(obj)
            )

        elif isinstance(obj, Mapping):
            # Create temporary copy here to avoid calling too much code that
            # might mutate our dictionary while we're still iterating over it.
            obj = dict(obj.items())

            rv_dict: "Dict[str, Any]" = {}
            i = 0

            for k, v in obj.items():
                if remaining_breadth is not None and i >= remaining_breadth:
                    _annotate(len=len(obj))
                    break

                str_k = str(k)
                v = _serialize_node(
                    v,
                    segment=str_k,
                    should_repr_strings=should_repr_strings,
                    is_databag=is_databag,
                    is_request_body=is_request_body,
                    remaining_depth=(
                        remaining_depth - 1 if remaining_depth is not None else None
                    ),
                    remaining_breadth=remaining_breadth,
                )
                rv_dict[str_k] = v
                i += 1

            return rv_dict

        elif not isinstance(obj, serializable_str_types) and isinstance(
            obj, tuple(sequence_types)
        ):
            rv_list = []

            for i, v in enumerate(obj):  # type: ignore[arg-type]
                if remaining_breadth is not None and i >= remaining_breadth:
                    _annotate(len=len(obj))  # type: ignore[arg-type]
                    break

                rv_list.append(
                    _serialize_node(
                        v,
                        segment=i,
                        should_repr_strings=should_repr_strings,
                        is_databag=is_databag,
                        is_request_body=is_request_body,
                        remaining_depth=(
                            remaining_depth - 1 if remaining_depth is not None else None
                        ),
                        remaining_breadth=remaining_breadth,
                    )
                )

            return rv_list

        if should_repr_strings:
            obj = _safe_repr_wrapper(obj)
        else:
            if isinstance(obj, bytes) or isinstance(obj, bytearray):
                obj = obj.decode("utf-8", "replace")

            if not isinstance(obj, str):
                obj = _safe_repr_wrapper(obj)

        is_span_description = (
            len(path) == 3 and path[0] == "spans" and path[-1] == "description"
        )
        if is_span_description:
            return obj

        return _flatten_annotated(strip_string(obj, max_length=max_value_length))

    #
    # Start of serialize() function
    #
    disable_capture_event.set(True)
    try:
        serialized_event = _serialize_node(event, **kwargs)
        if not is_vars and meta_stack and isinstance(serialized_event, dict):
            serialized_event["_meta"] = meta_stack[0]

        return serialized_event
    finally:
        disable_capture_event.set(False)