Add datadog span & event information to structured logs in a Django app

extra_logging.py

import logging
from typing import Any, Dict

import ddtrace
from ddtrace import tracer


def datadog_context(
    logger: logging.Logger, log_method: Any, event_dict: Dict[Any, Any]
) -> Dict[Any, Any]:

     # ...
    # Add datadog information
    span = tracer.current_span()
    trace_id, span_id = (span.trace_id, span.span_id) if span else (None, None)
    event_dict["dd.trace_id"] = str(trace_id or 0)
    event_dict["dd.span_id"] = str(span_id or 0)
    event_dict["dd.env"] = ddtrace.config.env or ""
    event_dict["dd.service"] = ddtrace.config.service or ""
    event_dict["dd.version"] = ddtrace.config.version or ""

    return event_dict

settings.py

# ... usual django stuff
import structlog
from ddtrace import config as ddtrace_config
from ddtrace import filters, tracer
from django_structlog.processors import inject_context_dict


from .extra_logging import datadog_context

# ...
# structlog chain

process_base = [
    structlog.processors.TimeStamper(fmt="iso"),
    structlog.stdlib.add_logger_name,
    structlog.stdlib.add_log_level,
    structlog.stdlib.PositionalArgumentsFormatter(),
    structlog.processors.StackInfoRenderer(),
    structlog.processors.format_exc_info,
    structlog.processors.UnicodeDecoder(),
    datadog_context,
]
process_foreign_pre_chain = [inject_context_dict] + process_base
process_structlog = (
    [structlog.stdlib.filter_by_level]
    + process_base
    + [structlog.stdlib.ProcessorFormatter.wrap_for_formatter]
)