akka instrumentation adding extraneous slashes

[asuresh4]

Describe the bug

akka instrumentation adding extraneous slashes to http.route attribute and span name.

Steps to reproduce

https://github.com/asuresh4/akka-example/tree/main contains an example where this behavior is readily reproducible along with steps.

Expected behavior

Span name and http.route attribute take the following forms GET /ball/* or /ball/*.

Actual behavior

Span name and http.route attribute take the following forms GET //ball//* or //ball//* with additional slashes.

Javaagent or library instrumentation version

2.6.0

Environment

JDK:

openjdk 21.0.3 2024-04-16
OpenJDK Runtime Environment Homebrew (build 21.0.3)
OpenJDK 64-Bit Server VM Homebrew (build 21.0.3, mixed mode, sharing)

OS: MacOS

Additional context

The url.path attribute is set to values without extraneous slashes.

[asuresh4]

cc: @breedx-splk