Create custom Spring scopes for Span (and Trace if possible)

[rLitto]

Working on a similar problem I encountered the need to set and have access to some variables that should live only for the Span of an operation.
Eg: storing some header information that arrives from a jms message, without having access to a Session or Request scope.

I resolved to use a (Named)InheritableThreadLocal element inside a component, but this could be solved by adding a custom scope, that if a request comes from http overlaps the Request scope, but is available even if a request comes from a jms (or other) calls:

Custom scope for JMS

[marcingrzejszczak]

After #711 , I think that this will now be solved via ExtraFieldPropagation.set and ExtraFieldPropagation.get. If the fields are not set in the whitelist of headers then they will not be propagated. WDYT @adriancole ?

[codefromthecrypt]

Depends.. if these variables are to be propagated out of process to the next hop, yes. Tomorrow, I will update the description of openzipkin/brave#577 mentioning local propagation as some have asked for things like span name for correlation purposes. What is different is that this could be correlated data but not data necessary or helpful to send to the next node (as it is not trace scoped)

…

On 21 Jan 2018 9:40 pm, "Marcin Grzejszczak" ***@***.***> wrote: After #711 <#711> , I think that this will now be solved via ExtraFieldPropagation.set and ExtraFieldPropagation.get. If the fields are not set in the whitelist of headers then they will not be propagated. WDYT @adriancole <https://github.com/adriancole> ? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#144 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAD61wGkVvo4R72a8q-JHxD6ZmmVU0kSks5tMz5egaJpZM4HUSK3> .

[codefromthecrypt]

huge redo of the openzipkin/brave#577 description complete

[marcingrzejszczak]

Anyways, I guess this problem will be moved to Brave. I'll close this one in favour of openzipkin/brave#577