Struggling with routing processor

[bfelder]

Hello there,

I'm struggling now for several hours with the routing processor that doesn't do what I want it to do. I'm using otelcol-contrib:0.106.0-1.

I have a classic (no k8s) nginx setup with several virtual hosts acting as a reverse proxy for different backends. I want to feed opentelemetry data into Azure App Insights. This works well with a simple setup.

No I want to feed the data from different virtual hosts into different App Insights instances. I cannot figure out on how to do this. The only routing option that works is the default option.

My processors config:

processors:
  routing:
    from_attribute: net.host.name
    attribute_source: context
    table:
    - value: cfp-dev.cloud.company.com
      exporters: [azuremonitor/dev]
    - value: cfp-int.cloud.company.com
      exporters: [azuremonitor/int]
    - value: cfp-uat.cloud.company.com
      exporters: [azuremonitor/uat]

  batch:

Debug shows me the following span data:

Span #15
    Trace ID       : 1e2721e84907fb588878e511ff526506
    Parent ID      :
    ID             : b652e0e5fefa6e06
    Name           : ^/AUTHLOC/([^/]+)/(.+)$
    Kind           : Server
    Start time     : 2024-08-02 15:00:08.039 +0000 UTC
    End time       : 2024-08-02 15:00:08.043 +0000 UTC
    Status code    : Unset
    Status message :
Attributes:
     -> http.method: Str(POST)
     -> http.target: Str(/AUTHLOC/service-abc/v1/bla/2/test1)
     -> http.route: Str(^/AUTHLOC/([^/]+)/(.+)$)
     -> http.scheme: Str(https)
     -> http.flavor: Str(1.1)
     -> http.user_agent: Str(python-requests/2.25.1)
     -> http.request_content_length: Int(63)
     -> http.response_content_length: Int(246)
     -> http.status_code: Int(200)
     -> net.host.name: Str(cfp-dev.cloud.company.com)
     -> net.host.port: Int(8443)
     -> net.sock.peer.addr: Str(10.122.140.6)
     -> net.sock.peer.port: Int(57338)
        {"kind": "exporter", "data_type": "traces", "name": "debug"}

I think I didn't understand how to populate the routing map correctly. Can you give me a hint?

Thank you,

Bernd