chore: 添加虚拟环境到仓库

- 添加 backend_service/venv 虚拟环境
- 包含所有Python依赖包
- 注意：虚拟环境约393MB，包含12655个文件

backend_service/venv/lib/python3.13/site-packages/opentelemetry/_events/__init__.py

@@ -0,0 +1,224 @@
+# Copyright The OpenTelemetry Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from abc import ABC, abstractmethod
+from logging import getLogger
+from os import environ
+from typing import Optional, cast
+
+from opentelemetry._logs import LogRecord
+from opentelemetry._logs.severity import SeverityNumber
+from opentelemetry.environment_variables import (
+    _OTEL_PYTHON_EVENT_LOGGER_PROVIDER,
+)
+from opentelemetry.trace.span import TraceFlags
+from opentelemetry.util._once import Once
+from opentelemetry.util._providers import _load_provider
+from opentelemetry.util.types import AnyValue, _ExtendedAttributes
+
+_logger = getLogger(__name__)
+
+
+class Event(LogRecord):
+    def __init__(
+        self,
+        name: str,
+        timestamp: Optional[int] = None,
+        trace_id: Optional[int] = None,
+        span_id: Optional[int] = None,
+        trace_flags: Optional["TraceFlags"] = None,
+        body: Optional[AnyValue] = None,
+        severity_number: Optional[SeverityNumber] = None,
+        attributes: Optional[_ExtendedAttributes] = None,
+    ):
+        attributes = attributes or {}
+        event_attributes = {
+            **attributes,
+            "event.name": name,
+        }
+        super().__init__(
+            timestamp=timestamp,
+            trace_id=trace_id,
+            span_id=span_id,
+            trace_flags=trace_flags,
+            body=body,
+            severity_number=severity_number,
+            attributes=event_attributes,
+        )
+        self.name = name
+
+
+class EventLogger(ABC):
+    def __init__(
+        self,
+        name: str,
+        version: Optional[str] = None,
+        schema_url: Optional[str] = None,
+        attributes: Optional[_ExtendedAttributes] = None,
+    ):
+        self._name = name
+        self._version = version
+        self._schema_url = schema_url
+        self._attributes = attributes
+
+    @abstractmethod
+    def emit(self, event: "Event") -> None:
+        """Emits a :class:`Event` representing an event."""
+
+
+class NoOpEventLogger(EventLogger):
+    def emit(self, event: Event) -> None:
+        pass
+
+
+class ProxyEventLogger(EventLogger):
+    def __init__(
+        self,
+        name: str,
+        version: Optional[str] = None,
+        schema_url: Optional[str] = None,
+        attributes: Optional[_ExtendedAttributes] = None,
+    ):
+        super().__init__(
+            name=name,
+            version=version,
+            schema_url=schema_url,
+            attributes=attributes,
+        )
+        self._real_event_logger: Optional[EventLogger] = None
+        self._noop_event_logger = NoOpEventLogger(name)
+
+    @property
+    def _event_logger(self) -> EventLogger:
+        if self._real_event_logger:
+            return self._real_event_logger
+
+        if _EVENT_LOGGER_PROVIDER:
+            self._real_event_logger = _EVENT_LOGGER_PROVIDER.get_event_logger(
+                self._name,
+                self._version,
+                self._schema_url,
+                self._attributes,
+            )
+            return self._real_event_logger
+        return self._noop_event_logger
+
+    def emit(self, event: Event) -> None:
+        self._event_logger.emit(event)
+
+
+class EventLoggerProvider(ABC):
+    @abstractmethod
+    def get_event_logger(
+        self,
+        name: str,
+        version: Optional[str] = None,
+        schema_url: Optional[str] = None,
+        attributes: Optional[_ExtendedAttributes] = None,
+    ) -> EventLogger:
+        """Returns an EventLoggerProvider for use."""
+
+
+class NoOpEventLoggerProvider(EventLoggerProvider):
+    def get_event_logger(
+        self,
+        name: str,
+        version: Optional[str] = None,
+        schema_url: Optional[str] = None,
+        attributes: Optional[_ExtendedAttributes] = None,
+    ) -> EventLogger:
+        return NoOpEventLogger(
+            name, version=version, schema_url=schema_url, attributes=attributes
+        )
+
+
+class ProxyEventLoggerProvider(EventLoggerProvider):
+    def get_event_logger(
+        self,
+        name: str,
+        version: Optional[str] = None,
+        schema_url: Optional[str] = None,
+        attributes: Optional[_ExtendedAttributes] = None,
+    ) -> EventLogger:
+        if _EVENT_LOGGER_PROVIDER:
+            return _EVENT_LOGGER_PROVIDER.get_event_logger(
+                name,
+                version=version,
+                schema_url=schema_url,
+                attributes=attributes,
+            )
+        return ProxyEventLogger(
+            name,
+            version=version,
+            schema_url=schema_url,
+            attributes=attributes,
+        )
+
+
+_EVENT_LOGGER_PROVIDER_SET_ONCE = Once()
+_EVENT_LOGGER_PROVIDER: Optional[EventLoggerProvider] = None
+_PROXY_EVENT_LOGGER_PROVIDER = ProxyEventLoggerProvider()
+
+
+def get_event_logger_provider() -> EventLoggerProvider:
+    global _EVENT_LOGGER_PROVIDER  # pylint: disable=global-variable-not-assigned
+    if _EVENT_LOGGER_PROVIDER is None:
+        if _OTEL_PYTHON_EVENT_LOGGER_PROVIDER not in environ:
+            return _PROXY_EVENT_LOGGER_PROVIDER
+
+        event_logger_provider: EventLoggerProvider = _load_provider(  # type: ignore
+            _OTEL_PYTHON_EVENT_LOGGER_PROVIDER, "event_logger_provider"
+        )
+
+        _set_event_logger_provider(event_logger_provider, log=False)
+
+    return cast("EventLoggerProvider", _EVENT_LOGGER_PROVIDER)
+
+
+def _set_event_logger_provider(
+    event_logger_provider: EventLoggerProvider, log: bool
+) -> None:
+    def set_elp() -> None:
+        global _EVENT_LOGGER_PROVIDER  # pylint: disable=global-statement
+        _EVENT_LOGGER_PROVIDER = event_logger_provider
+
+    did_set = _EVENT_LOGGER_PROVIDER_SET_ONCE.do_once(set_elp)
+
+    if log and not did_set:
+        _logger.warning(
+            "Overriding of current EventLoggerProvider is not allowed"
+        )
+
+
+def set_event_logger_provider(
+    event_logger_provider: EventLoggerProvider,
+) -> None:
+    _set_event_logger_provider(event_logger_provider, log=True)
+
+
+def get_event_logger(
+    name: str,
+    version: Optional[str] = None,
+    schema_url: Optional[str] = None,
+    attributes: Optional[_ExtendedAttributes] = None,
+    event_logger_provider: Optional[EventLoggerProvider] = None,
+) -> "EventLogger":
+    if event_logger_provider is None:
+        event_logger_provider = get_event_logger_provider()
+    return event_logger_provider.get_event_logger(
+        name,
+        version,
+        schema_url,
+        attributes,
+    )