On what basis are the spans colored? My java application is autoinstrumented and mades JDBC calls. However all the spans appear blue. I’d like for the spans with attribute db.system=mssql to be colored differently. How can I do this?

No, you can not specify color codes. Errors are in red. @Palash Gupta can you please confirm?

@Vishal Sharma the sample app that Signoz ships has different colors for spans but here each span belongs to a separate service

designing a color system might be a good idea. @Sanjiv can you create an issue for this, might be helpful to others users also

@Sanjiv DB are not shown as different services. The hot rod shows them in services because it sets

service.name

for databases. They are not really databases but a simply go programs mimicking the DB behaviour.

Is there a way to programatically update the service.name of a Span? Setting an attribute “service.name” on the Span does not result it the new service name being applied

@Sanjiv

service.name

is not a span level attribute, rather it is a resource attribute.

do you know how I can set the resource attribute using Java API’s

Resource attributes can only be added when initializing the instrumentation in a service. So you can’t change resource attribute for a individual span. cc: @Srikanth Chekuri

@Vishal Sharma ok, thanks

However, you can use multiple (tracer/meter/logger)providers within same service each with different resource attributes, then they will show up as different services in the UI.

@Vishal Sharma apart from the error we are assigning the colour in a round-robin fashion for different service