Micrometer route gets sub router attached at the end

[basalt79]

Version

vertx: 4.5.7 - 4.5.11

Context

Define a main route and add a sub route.
Calling sub route api.
on 200 -> route string in metrics looks ok
on fail() -> route string in metrics gets the sub route attached at the end of the url.

Reproducer

see: https://github.com/basalt79/vertx-web-metrics

Steps to reproduce

1. Launch MainVerticleTest
2. see failing tests

OR

1. Launch MainVerticle
2. navigate to

http://localhost:7777/good
http://localhost:7777/bad
http://localhost:7777/notfound
http://localhost:7777/first/good
http://localhost:7777/first/bad
http://localhost:7777/first/notfound
http://localhost:7777/first/second/good
http://localhost:7777/first/second/bad
http://localhost:7777/first/second/notfound

and check afterwards the metrics result at http://localhost:7777/metrics

Extra

Since the effect of this hits metrics, i put this issue here, but maybe the root cause is located at https://github.com/vert-x3/vertx-web/

[tsegismont]

Thanks for your report @basalt79

Does the issue affect 4.5.6 as well?

[basalt79]

Thanks for taking care @tsegismont .
Yes, with 4.5.6, 4.5.5, 4.5.3 its the same behavior. I created a branch for this version, see https://github.com/basalt79/vertx-web-metrics/tree/4.5.6

[basalt79]

I have added a reproducer with 4.0.0, this was the first version where the route was added to the metrics.
https://github.com/basalt79/vertx-web-metrics/tree/4.0.0

this happens only if I use subRouter like https://github.com/basalt79/vertx-web-metrics/blob/4.0.0/src/main/java/com/noenv/georg/MainVerticle.java#L104

@tsegismont
If I define each route dedicated, its working https://github.com/basalt79/vertx-web-metrics/blob/4.0.0/src/main/java/com/noenv/georg/MainVerticle.java#L81

i have not adapted the unit tests, because if i dont use subRouter, the />/ part is missing anyway.

since we use subRouter for the main API routes from Swagger, the behavior is on every service.

[tsegismont]

Thank you for all these details, I'll look into your reproducer

[basalt79]

Hi @tsegismont , have you already got the chance to take a look at the reproducer?