Thanks Zeehad... That is correct! Our engineering lead for Cloud Trace
responded to PK off thread and I think her response might be helpful or at
least interesting to others.
The requests are sampled at a rate of 0.1 request per second for each
app engine instance you have.
If you want to force a request to be traced, add X-Cloud-Trace-Context
header to your request. The trace header specification in rfc7230 syntax
<https://tools.ietf.org/html/rfc7230> is as below:
trace-context := “X-Cloud-Trace-Context” “:” trace-id “/” span-id[ “;” “o”
“=” trace_options ] *( “;” key “=” value)
trace-id := 1*( HEXDIG) ; hex representation of a 128 bit value
span-id := 1*(DIGIT) ; decimal representation of a 64 bit value
trace-option := 1*(DIGIT) ; decimal representation of a 32 bit value
Trace-id is required to be a 32 char hex value representing a 128 bit
number. It should be unique between your requests unless you intentionally
want to bundle them together. You can use UUIDs.
Span-id is better to be set to "0" if this is the root of your trace.
Unless you have mobile clients that send in trace data (which is unlikely
since you just discovered the feature), I'd suggest you use "0"
trace-option: set to 1 if you want to trace this request. 0 if you don't
want to trace the request
Here is an example to show how to force tracing via curl:
curl "http://<your.apps.url>" --header "X-Cloud-Trace-Context:
<trace-id>/0;o=1"
example trace-id: 105445aa7843bc8bf206b120001000
On Wed, Jan 13, 2016 at 2:37 PM, Zeehad (Cloud Platform Support) <
abdull...@google.com> wrote:
> Hello,
>
> Cloud trace captures all requests to application URIs. If you cannot see
> the request in the overview, find the trace
> <https://cloud.google.com/trace/docs/finding-traces> by choosing the
> appropriate parameters. You can also create analysis reports
> <https://cloud.google.com/trace/docs/analysis-reports#create_a_new_analysis_report>
> for
> specific URIs.
>
> I hope it helps. Cheers!
>
> --
> You received this message because you are subscribed to the Google Groups
> "Google App Engine" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to google-appengine+unsubscr...@googlegroups.com.
> To post to this group, send email to google-appengine@googlegroups.com.
> Visit this group at https://groups.google.com/group/google-appengine.
> To view this discussion on the web visit
> https://groups.google.com/d/msgid/google-appengine/843b83e9-5a95-41c4-adfc-17f8396c1d8e%40googlegroups.com
> <https://groups.google.com/d/msgid/google-appengine/843b83e9-5a95-41c4-adfc-17f8396c1d8e%40googlegroups.com?utm_medium=email&utm_source=footer>
> .
>
> For more options, visit https://groups.google.com/d/optout.
>
--
You received this message because you are subscribed to the Google Groups
"Google App Engine" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to google-appengine+unsubscr...@googlegroups.com.
To post to this group, send email to google-appengine@googlegroups.com.
Visit this group at https://groups.google.com/group/google-appengine.
To view this discussion on the web visit
https://groups.google.com/d/msgid/google-appengine/CAHLXp%3DG6wmhy6YotFx0fF1htCkb-1cPxWDbaZYRc9XZZ%3D39bmA%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.
