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Editing: envelope.py

import io
import json
import mimetypes
from typing import TYPE_CHECKING

from sentry_sdk.session import Session
from sentry_sdk.utils import capture_internal_exceptions, json_dumps

if TYPE_CHECKING:
    from typing import Any, Dict, Iterator, List, Optional, Union

from sentry_sdk._types import Event, EventDataCategory

def parse_json(data: "Union[bytes, str]") -> "Any":
    # on some python 3 versions this needs to be bytes
    if isinstance(data, bytes):
        data = data.decode("utf-8", "replace")
    return json.loads(data)

class Envelope:
    """
    Represents a Sentry Envelope. The calling code is responsible for adhering to the constraints
    documented in the Sentry docs: https://develop.sentry.dev/sdk/envelopes/#data-model. In particular,
    each envelope may have at most one Item with type "event" or "transaction" (but not both).
    """

def __init__(
        self,
        headers: "Optional[Dict[str, Any]]" = None,
        items: "Optional[List[Item]]" = None,
    ) -> None:
        if headers is not None:
            headers = dict(headers)
        self.headers = headers or {}
        if items is None:
            items = []
        else:
            items = list(items)
        self.items = items

@property
    def description(self) -> str:
        return "envelope with %s items (%s)" % (
            len(self.items),
            ", ".join(x.data_category for x in self.items),
        )

def add_event(
        self,
        event: "Event",
    ) -> None:
        self.add_item(Item(payload=PayloadRef(json=event), type="event"))

def add_transaction(
        self,
        transaction: "Event",
    ) -> None:
        self.add_item(Item(payload=PayloadRef(json=transaction), type="transaction"))

def add_profile(
        self,
        profile: "Any",
    ) -> None:
        self.add_item(Item(payload=PayloadRef(json=profile), type="profile"))

def add_profile_chunk(
        self,
        profile_chunk: "Any",
    ) -> None:
        self.add_item(
            Item(
                payload=PayloadRef(json=profile_chunk),
                type="profile_chunk",
                headers={"platform": profile_chunk.get("platform", "python")},
            )
        )

def add_checkin(
        self,
        checkin: "Any",
    ) -> None:
        self.add_item(Item(payload=PayloadRef(json=checkin), type="check_in"))

def add_session(
        self,
        session: "Union[Session, Any]",
    ) -> None:
        if isinstance(session, Session):
            session = session.to_json()
        self.add_item(Item(payload=PayloadRef(json=session), type="session"))

def add_sessions(
        self,
        sessions: "Any",
    ) -> None:
        self.add_item(Item(payload=PayloadRef(json=sessions), type="sessions"))

def add_item(
        self,
        item: "Item",
    ) -> None:
        self.items.append(item)

def get_event(self) -> "Optional[Event]":
        for items in self.items:
            event = items.get_event()
            if event is not None:
                return event
        return None

def get_transaction_event(self) -> "Optional[Event]":
        for item in self.items:
            event = item.get_transaction_event()
            if event is not None:
                return event
        return None

def __iter__(self) -> "Iterator[Item]":
        return iter(self.items)

def serialize_into(
        self,
        f: "Any",
    ) -> None:
        f.write(json_dumps(self.headers))
        f.write(b"\n")
        for item in self.items:
            item.serialize_into(f)

def serialize(self) -> bytes:
        out = io.BytesIO()
        self.serialize_into(out)
        return out.getvalue()

@classmethod
    def deserialize_from(
        cls,
        f: "Any",
    ) -> "Envelope":
        headers = parse_json(f.readline())
        items = []
        while 1:
            item = Item.deserialize_from(f)
            if item is None:
                break
            items.append(item)
        return cls(headers=headers, items=items)

@classmethod
    def deserialize(
        cls,
        bytes: bytes,
    ) -> "Envelope":
        return cls.deserialize_from(io.BytesIO(bytes))

def __repr__(self) -> str:
        return "<Envelope headers=%r items=%r>" % (self.headers, self.items)

class PayloadRef:
    def __init__(
        self,
        bytes: "Optional[bytes]" = None,
        path: "Optional[Union[bytes, str]]" = None,
        json: "Optional[Any]" = None,
    ) -> None:
        self.json = json
        self.bytes = bytes
        self.path = path

def get_bytes(self) -> bytes:
        if self.bytes is None:
            if self.path is not None:
                with capture_internal_exceptions():
                    with open(self.path, "rb") as f:
                        self.bytes = f.read()
            elif self.json is not None:
                self.bytes = json_dumps(self.json)
        return self.bytes or b""

@property
    def inferred_content_type(self) -> str:
        if self.json is not None:
            return "application/json"
        elif self.path is not None:
            path = self.path
            if isinstance(path, bytes):
                path = path.decode("utf-8", "replace")
            ty = mimetypes.guess_type(path)[0]
            if ty:
                return ty
        return "application/octet-stream"

def __repr__(self) -> str:
        return "<Payload %r>" % (self.inferred_content_type,)

class Item:
    def __init__(
        self,
        payload: "Union[bytes, str, PayloadRef]",
        headers: "Optional[Dict[str, Any]]" = None,
        type: "Optional[str]" = None,
        content_type: "Optional[str]" = None,
        filename: "Optional[str]" = None,
    ):
        if headers is not None:
            headers = dict(headers)
        elif headers is None:
            headers = {}
        self.headers = headers
        if isinstance(payload, bytes):
            payload = PayloadRef(bytes=payload)
        elif isinstance(payload, str):
            payload = PayloadRef(bytes=payload.encode("utf-8"))
        else:
            payload = payload

if filename is not None:
            headers["filename"] = filename
        if type is not None:
            headers["type"] = type
        if content_type is not None:
            headers["content_type"] = content_type
        elif "content_type" not in headers:
            headers["content_type"] = payload.inferred_content_type

self.payload = payload

def __repr__(self) -> str:
        return "<Item headers=%r payload=%r data_category=%r>" % (
            self.headers,
            self.payload,
            self.data_category,
        )

@property
    def type(self) -> "Optional[str]":
        return self.headers.get("type")

@property
    def data_category(self) -> "EventDataCategory":
        ty = self.headers.get("type")
        if ty == "session" or ty == "sessions":
            return "session"
        elif ty == "attachment":
            return "attachment"
        elif ty == "transaction":
            return "transaction"
        elif ty == "span":
            return "span"
        elif ty == "event":
            return "error"
        elif ty == "log":
            return "log_item"
        elif ty == "trace_metric":
            return "trace_metric"
        elif ty == "client_report":
            return "internal"
        elif ty == "profile":
            return "profile"
        elif ty == "profile_chunk":
            return "profile_chunk"
        elif ty == "check_in":
            return "monitor"
        else:
            return "default"

def get_bytes(self) -> bytes:
        return self.payload.get_bytes()

def get_event(self) -> "Optional[Event]":
        """
        Returns an error event if there is one.
        """
        if self.type == "event" and self.payload.json is not None:
            return self.payload.json
        return None

def get_transaction_event(self) -> "Optional[Event]":
        if self.type == "transaction" and self.payload.json is not None:
            return self.payload.json
        return None

def serialize_into(
        self,
        f: "Any",
    ) -> None:
        headers = dict(self.headers)
        bytes = self.get_bytes()
        headers["length"] = len(bytes)
        f.write(json_dumps(headers))
        f.write(b"\n")
        f.write(bytes)
        f.write(b"\n")

def serialize(self) -> bytes:
        out = io.BytesIO()
        self.serialize_into(out)
        return out.getvalue()

@classmethod
    def deserialize_from(
        cls,
        f: "Any",
    ) -> "Optional[Item]":
        line = f.readline().rstrip()
        if not line:
            return None
        headers = parse_json(line)
        length = headers.get("length")
        if length is not None:
            payload = f.read(length)
            f.readline()
        else:
            # if no length was specified we need to read up to the end of line
            # and remove it (if it is present, i.e. not the very last char in an eof terminated envelope)
            payload = f.readline().rstrip(b"\n")
        if headers.get("type") in ("event", "transaction"):
            rv = cls(headers=headers, payload=PayloadRef(json=parse_json(payload)))
        else:
            rv = cls(headers=headers, payload=payload)
        return rv

@classmethod
    def deserialize(
        cls,
        bytes: bytes,
    ) -> "Optional[Item]":
        return cls.deserialize_from(io.BytesIO(bytes))

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