trace explorer: Add support for stacktraces that appear in the "Stacktraces" tab in trace explorer

[scrooloose]

Hello, at work we are using trace explorer in one of our Ruby on Rails apps. It is quite useful. However, the stacktraces for each span are shown as json objects in the span's Attributes tab, rather than in the actual Stacktraces tab.

Currently, to find the line of our app code that generated the span, we have to copy/paste the stacktrace json out and run it through a tool like jq.

I notice that the library is just setting the stacktrace as a label on the span, but it looks the API to create spans does have a place to put proper stacktraces? https://cloud.google.com/trace/docs/reference/v2/rest/v2/projects.traces.spans/createSpan.

First question:

1. Is it possible to configure the library to populate the Stacktraces tab in the UI instead of using a label on the span? I'm prepared to believe I'm just misconfiguring the library somehow :-)
2. If it is not possible to populate the Stacktraces tab, are there plans to update this? Do you accept pull requests?

Thanks!

[scrooloose]

After some further investigation, it looks like the google-cloud-trace gem has two version specific companion gems (v1 and v2), and it looks like the base gem is hardcoded to use v1? Is this correct? Can it be configured to use v2 or is that simply not possible at this stage?