0.47.0

v0.47.0

Upgrade Notes

• The profiler now automatically sets up uWSGI compatibility in auto mode or with profile_children=True. Make sure that you don't have custom code instrumenting the profiler in those cases.
• The Tracer class properties DEFAULT_HOSTNAME, DEFAULT_PORT, DEFAULT_DOGSTATSD_PORT, DEFAULT_DOGSTATSD_URL, DEFAULT_AGENT_URL have been removed.
• elasticsearch: removed get_traced_transport method and ddtrace.contrib.elasticsearch.transport module.

New Features

• cherrypy: introduce TraceMiddleware for the CherryPy web framework.
• django: tag root spans as measured.
• elasticsearch: add support for version 7.
• fastapi: add integration.
• Introduce support for the DD_SERVICE_MAPPING environment variable to allow remapping service names on emitted spans.
• httplib: distributed tracing is now enabled by default.
• The profiler now supports most operation mode from uWSGI without much configuration. It will automatically plug itself in post fork hooks when multiprocess mode is used.
• wsgi: add tracing middleware.

Bug Fixes

• Resolves an issue in Django tracing where, if query_string is not present in request.META, a KeyError is raised, causing the request to 500
• Deprecate the DD_LOGGING_RATE_LIMIT variable in favor of the standard DD_TRACE_LOGGING_RATE for configuring the logging rate limit.
• sampler: removed bug causing sample_rate of 0 to be reset to 1, and raise ValueError instead of logging.
• starlette: unpatch calls correctly.
• flask: fix memory leak of sampled out traces.
• Fix CPU time and wall time profiling not ignoring the profiler tasks with gevent.

Other Notes

• The default maximum CPU time used for the stack profiler (CPU time, wall time and exceptions profiling) has been decreased from 2% to 1%.