Check proxy health only once during startup

Author: LEDfan

src/main/java/eu/openanalytics/containerproxy/backend/kubernetes/KubernetesBackend.java

@@ -834,17 +834,10 @@ public boolean isProxyHealthy(Proxy proxy) {
             if (podInfo.isEmpty()) {
                 continue;
             }
-            for (int i = 0; i < 5; i++) {
-                Optional<String> error = getContainerFailure(podInfo.get().getNamespace(), podInfo.get().getName());
-                if (error.isPresent()) {
-                    slog.warn(proxy, error.get());
-                    return false;
-                }
-                try {
-                    // wait for k8s events to propagate
-                    Thread.sleep(1_000);
-                } catch (InterruptedException ignored) {
-                }
+            Optional<String> error = getContainerFailure(podInfo.get().getNamespace(), podInfo.get().getName());
+            if (error.isPresent()) {
+                slog.warn(proxy, error.get());
+                return false;
             }
         }
         return true;

src/main/java/eu/openanalytics/containerproxy/service/ProxyService.java

@@ -426,8 +426,15 @@ public Command resumeProxy(Authentication user, Proxy proxy, Map<String, String>
     }
 
     public boolean isProxyHealthy(Proxy proxy) {
-        if (!proxyDispatcherService.getDispatcher(proxy.getSpecId()).isProxyHealthy(proxy)) {
-            return false;
+        for (int i = 0; i < 5; i++) {
+            if (!proxyDispatcherService.getDispatcher(proxy.getSpecId()).isProxyHealthy(proxy)) {
+                return false;
+            }
+            try {
+                // wait for events to propagate
+                Thread.sleep(1_000);
+            } catch (InterruptedException ignored) {
+            }
         }
         if (proxy.getTargets().isEmpty()) {
             slog.info(proxy, "Proxy failed: no targets available");