refactor(entrypoint): move route registry into entrypoint context

Replace global routes registry with entrypoint-scoped pools and
context lookups, and centralize API/metrics startup in config state.

internal/entrypoint/http_pool_adapter.go

@@ -0,0 +1,51 @@
+package entrypoint
+
+import (
+	"github.com/yusing/godoxy/internal/common"
+	"github.com/yusing/godoxy/internal/types"
+)
+
+// httpPoolAdapter implements the PoolLike interface for the HTTP routes.
+type httpPoolAdapter struct {
+	ep *Entrypoint
+}
+
+func newHTTPPoolAdapter(ep *Entrypoint) httpPoolAdapter {
+	return httpPoolAdapter{ep: ep}
+}
+
+func (h httpPoolAdapter) Iter(yield func(alias string, route types.HTTPRoute) bool) {
+	for addr, srv := range h.ep.servers.Range {
+		// default routes are added to both HTTP and HTTPS servers, we don't need to iterate over them twice.
+		if addr == common.ProxyHTTPSAddr {
+			continue
+		}
+		for alias, route := range srv.routes.Iter {
+			if !yield(alias, route) {
+				return
+			}
+		}
+	}
+}
+
+func (h httpPoolAdapter) Get(alias string) (types.HTTPRoute, bool) {
+	for addr, srv := range h.ep.servers.Range {
+		if addr == common.ProxyHTTPSAddr {
+			continue
+		}
+		if route, ok := srv.routes.Get(alias); ok {
+			return route, true
+		}
+	}
+	return nil, false
+}
+
+func (h httpPoolAdapter) Size() (n int) {
+	for addr, srv := range h.ep.servers.Range {
+		if addr == common.ProxyHTTPSAddr {
+			continue
+		}
+		n += srv.routes.Size()
+	}
+	return
+}