Executor: Dump function service cache for pool manager functions (#2789)

* dump function service cache for executor
* fix lint issue
* code refactor and lint fixes

---------

Signed-off-by: Shubham Bansal <shubhambansaliimtgn@gmail.com>
Signed-off-by: Sanket Sudake <sanketsudake@gmail.com>
Co-authored-by: Sanket Sudake <sanketsudake@gmail.com>

pkg/executor/api.go

@@ -263,6 +263,19 @@ func (executor *Executor) unTapService(w http.ResponseWriter, r *http.Request) {
 	w.WriteHeader(http.StatusOK)
 }
 
+// dumpDebugInfo => dump function service for pool cache
+func (executor *Executor) dumpDebugInfo(w http.ResponseWriter, r *http.Request) {
+	// currently we are considering dumping function only for pool manager
+	et := executor.executorTypes[fv1.ExecutorTypePoolmgr]
+	if err := et.DumpDebugInfo(r.Context()); err != nil {
+		code, msg := ferror.GetHTTPError(err)
+		http.Error(w, msg, code)
+		return
+	}
+
+	w.WriteHeader(http.StatusOK)
+}
+
 // GetHandler returns an http.Handler.
 func (executor *Executor) GetHandler() http.Handler {
 	r := mux.NewRouter()
@@ -272,6 +285,7 @@ func (executor *Executor) GetHandler() http.Handler {
 	r.HandleFunc("/v2/tapServices", executor.tapServices).Methods("POST")
 	r.HandleFunc("/healthz", executor.healthHandler).Methods("GET")
 	r.HandleFunc("/v2/unTapService", executor.unTapService).Methods("POST")
+	r.HandleFunc("/v2/debugInfo", executor.dumpDebugInfo).Methods("GET")
 	return r
 }