Prometheus: Split up projects based on hosting mechanism #3057
Description
Currently OpenTelemetry.Exporter.Prometheus contains two hosting mechanisms:
PrometheusExporterMiddleware(ASP.NET Core)PrometheusExporterHttpServer(HttpListener)
We decided on the SIG meeting today (3/15/2022) that we want to split these two hosting mechanisms into their own projects/assemblies. That should simplify configuration & documentation and also allow for the introduction of settings specific to the hosting technology (see #2882).
Proposing:
- OpenTelemetry.Exporter.Prometheus.AspNetCore
- OpenTelemetry.Exporter.Prometheus.HttpListener
Shared code should live in another project (proposing OpenTelemetry.Exporter.Prometheus.Shared) but we don't want to ship that project. Code from the shared project should be linked into the hosting-specific projects. Example of that type of sharing being done: OpenTelemetry.Contrib.Shared.