fix: share OAP proxy servies for different endpoins and use health checked endpoints group

Author: kezhenxu94

apm-webapp/src/main/java/org/apache/skywalking/oap/server/webapp/ApplicationStartUp.java

@@ -62,15 +62,16 @@ public static void main(String[] args) throws Exception {
                 .of(ApplicationStartUp.class.getClassLoader(), "/zipkin-lens/index.html")
                 .asService();
 
-        final ZipkinProxyService zipkin = new ZipkinProxyService(configuration.zipkinServices());
+        final var zipkin = new ZipkinProxyService(configuration.zipkinServices());
+        final var oap = new OapProxyService(oapServices);
 
         Server
             .builder()
             .port(port, SessionProtocol.HTTP)
-            .service("/graphql", new OapProxyService(oapServices))
-            .service("/debugging/config/dump", new OapProxyService(oapServices))
-            .service("/status/config/ttl", new OapProxyService(oapServices))
-            .service("/status/cluster/nodes", new OapProxyService(oapServices))
+            .service("/graphql", oap)
+            .service("/debugging/config/dump", oap)
+            .service("/status/config/ttl", oap)
+            .service("/status/cluster/nodes", oap)
             .service("/internal/l7check", HealthCheckService.of())
             .service("/zipkin/config.json", zipkin)
             .serviceUnder("/zipkin/api", zipkin)

apm-webapp/src/main/java/org/apache/skywalking/oap/server/webapp/OapProxyService.java

@@ -67,7 +67,7 @@ private static WebClient newLoadBalancingClient(EndpointGroup oapGroup) {
         healthCheckedGroup.whenReady().get();
 
         return WebClient
-            .builder(SessionProtocol.HTTP, oapGroup)
+            .builder(SessionProtocol.HTTP, healthCheckedGroup)
             .decorator(LoggingClient.newDecorator())
             .build();
     }

docs/en/changes/changes.md

@@ -90,6 +90,7 @@
 * fix: optimize appearing the wrong prompt by pop-up for the HTTP environments in copy function.
 * refactor the configuration view and implement the optional config for displaying timestamp in Log widget.
 * test: implement unit tests for hooks and refactor some types.
+* fix: share OAP proxy servies for different endpoins and use health checked endpoints group.
 
 #### Documentation