fix(adapter): start pprof server when profiling is enabled

The eventing adapter framework creates and configures a ProfilingServer
but never calls ListenAndServe, so the profiling port is never bound
even when runtime-profiling is set to enabled in the observability
ConfigMap. Start the server conditionally based on the initial config,
consistent with the adapter's static observability config model.

Fixes #9007

Signed-off-by: Akshay Pant <akpant@redhat.com>

Author: theakshaypant

pkg/adapter/v2/main.go

@@ -18,6 +18,7 @@ package adapter
 
 import (
 	"context"
+	"errors"
 	"flag"
 	"fmt"
 	"log"
@@ -284,6 +285,18 @@ func MainWithInformers(ctx context.Context, component string, env EnvConfigAcces
 		}()
 	}
 
+	wg.Add(1)
+	go func() {
+		defer wg.Done()
+		go func() {
+			<-ctx.Done()
+			_ = pprof.Shutdown(context.Background())
+		}()
+		if err := pprof.ListenAndServe(); err != nil && !errors.Is(err, http.ErrServerClosed) {
+			logger.Warnw("Profiling server shut down", zap.Error(err))
+		}
+	}()
+
 	// Finally start the adapter (blocking)
 	if err := adapter.Start(ctx); err != nil {
 		logger.Fatalw("Start returned an error", zap.Error(err))