The X-Cloud-Trace-Context header is included in requests, but as we don't expose headers to the event-style functions it is inaccessible. This value is the only means of grouping StackDriver logs by request, and so we should expose it to the user function code.
Background events: The trace ID should be available in the context parameter.
The
X-Cloud-Trace-Context
header is included in requests, but as we don't expose headers to the event-style functions it is inaccessible. This value is the only means of grouping StackDriver logs by request, and so we should expose it to the user function code.Background events: The trace ID should be available in the
context
parameter.CloudEvents: The trace ID should be encoded as an extension on the event, leveraging the
traceparent
extension field as described in https://github.com/cloudevents/spec/blob/master/extensions/distributed-tracing.md.