handle error code < 500 in error handler (#1916)

* handle error code < 500 in error handler

also:
fixes: #378

* Update src/context/RealmsContext.tsx

Co-authored-by: Jon Koops <jonkoops@gmail.com>

* fixed import

* fixed tests

Co-authored-by: Jon Koops <jonkoops@gmail.com>

cypress/integration/masthead_test.spec.ts

@@ -2,13 +2,19 @@ import ListingPage from "../support/pages/admin_console/ListingPage";
 import LoginPage from "../support/pages/LoginPage";
 import SidebarPage from "../support/pages/admin_console/SidebarPage";
 import Masthead from "../support/pages/admin_console/Masthead";
-import { keycloakBefore } from "../support/util/keycloak_hooks";
+import {
+  keycloakBefore,
+  keycloakBeforeEach,
+} from "../support/util/keycloak_hooks";
 
 const loginPage = new LoginPage();
 const masthead = new Masthead();
+const listingPage = new ListingPage();
+const sidebarPage = new SidebarPage();
 
 const logOutTest = () => {
   it("logs out", () => {
+    sidebarPage.waitForPageLoad();
     masthead.signOut();
     loginPage.isLogInPage();
   });
@@ -16,6 +22,7 @@ const logOutTest = () => {
 
 const goToAcctMgtTest = () => {
   it("opens manage account and returns to admin console", () => {
+    sidebarPage.waitForPageLoad();
     masthead.accountManagement();
     cy.contains("Welcome to Keycloak Account Management");
     cy.get("#landingReferrerLink").click({ force: true });
@@ -24,17 +31,18 @@ const goToAcctMgtTest = () => {
 };
 
 describe("Masthead tests in desktop mode", () => {
-  beforeEach(() => {
+  before(() => {
     keycloakBefore();
     loginPage.logIn();
   });
 
+  beforeEach(() => {
+    keycloakBeforeEach();
+  });
+
   goToAcctMgtTest();
 
   it("disables header help and form field help", () => {
-    const sidebarPage = new SidebarPage();
-    const listingPage = new ListingPage();
-
     sidebarPage.goToClientScopes();
     listingPage.goToItemDetails("address");
 
@@ -51,12 +59,16 @@ describe("Masthead tests in desktop mode", () => {
 });
 
 describe("Masthead tests with kebab menu", () => {
-  beforeEach(() => {
+  before(() => {
     keycloakBefore();
     loginPage.logIn();
     masthead.setMobileMode(true);
   });
 
+  beforeEach(() => {
+    keycloakBeforeEach();
+  });
+
   it("shows kabab and hides regular menu", () => {
     masthead.checkKebabShown();
   });

cypress/integration/partial_import_test.spec.ts

@@ -3,7 +3,10 @@ import SidebarPage from "../support/pages/admin_console/SidebarPage";
 import LoginPage from "../support/pages/LoginPage";
 import PartialImportModal from "../support/pages/admin_console/configure/realm_settings/PartialImportModal";
 import RealmSettings from "../support/pages/admin_console/configure/realm_settings/RealmSettings";
-import { keycloakBefore } from "../support/util/keycloak_hooks";
+import {
+  keycloakBefore,
+  keycloakBeforeEach,
+} from "../support/util/keycloak_hooks";
 import AdminClient from "../support/util/AdminClient";
 
 describe("Partial import test", () => {
@@ -14,11 +17,13 @@ describe("Partial import test", () => {
   const modal = new PartialImportModal();
   const realmSettings = new RealmSettings();
 
-  beforeEach(() => {
+  before(() => {
     keycloakBefore();
     loginPage.logIn();
-    sidebarPage.waitForPageLoad();
+  });
 
+  beforeEach(() => {
+    keycloakBeforeEach();
     // doing this from the UI has the added bonus of putting you in the test realm
     sidebarPage.goToCreateRealm();
     createRealmPage.fillRealmName(TEST_REALM).createRealm();
@@ -43,6 +48,7 @@ describe("Partial import test", () => {
     modal.open();
     cy.get(".pf-c-code-editor__code textarea").type("{}");
     modal.importButton().should("be.disabled");
+    modal.cancelButton().click();
   });
 
   it("Displays user options after multi-realm import", () => {
@@ -81,6 +87,7 @@ describe("Partial import test", () => {
     cy.contains("2 records added");
     cy.contains("customer-portal");
     cy.contains("customer-portal2");
+    modal.closeButton().click();
   });
 
   it("Displays user options after realmless import and does the import", () => {

cypress/support/pages/admin_console/configure/realm_settings/PartialImportModal.ts

@@ -30,6 +30,10 @@ export default class GroupModal {
     return cy.findByTestId("cancel-button");
   }
 
+  closeButton() {
+    return cy.findByTestId("close-button");
+  }
+
   usersCheckbox() {
     return cy.findByTestId("users-checkbox");
   }

src/context/RealmsContext.tsx

@@ -7,6 +7,8 @@ import React, {
   useMemo,
   useState,
 } from "react";
+import axios from "axios";
+
 import { RecentUsed } from "../components/realm-selector/recent-used";
 import useRequiredContext from "../utils/useRequiredContext";
 import { useAdminClient, useFetch } from "./auth/AdminClient";
@@ -33,7 +35,21 @@ export const RealmsProvider: FunctionComponent = ({ children }) => {
   }
 
   useFetch(
-    () => adminClient.realms.find({ briefRepresentation: true }),
+    async () => {
+      try {
+        return await adminClient.realms.find({ briefRepresentation: true });
+      } catch (error) {
+        if (
+          axios.isAxiosError(error) &&
+          error.response &&
+          error.response.status < 500
+        ) {
+          return [];
+        }
+
+        throw error;
+      }
+    },
     (realms) => updateRealms(realms),
     []
   );

src/context/server-info/ServerInfoProvider.tsx

@@ -1,9 +1,9 @@
+import React, { createContext, FunctionComponent, useState } from "react";
+
 import type { ServerInfoRepresentation } from "@keycloak/keycloak-admin-client/lib/defs/serverInfoRepesentation";
-import React, { createContext, FunctionComponent } from "react";
-import { DataLoader } from "../../components/data-loader/DataLoader";
 import { sortProviders } from "../../util";
 import useRequiredContext from "../../utils/useRequiredContext";
-import { useAdminClient } from "../auth/AdminClient";
+import { useAdminClient, useFetch } from "../auth/AdminClient";
 
 export const ServerInfoContext = createContext<
   ServerInfoRepresentation | undefined
@@ -17,16 +17,23 @@ export const useLoginProviders = () => {
 
 export const ServerInfoProvider: FunctionComponent = ({ children }) => {
   const adminClient = useAdminClient();
-  const loader = async () => {
-    return await adminClient.serverInfo.find();
-  };
+  const [serverInfo, setServerInfo] = useState<ServerInfoRepresentation>({});
+
+  useFetch(
+    async () => {
+      try {
+        return await adminClient.serverInfo.find();
+      } catch (error) {
+        return {};
+      }
+    },
+    setServerInfo,
+    []
+  );
+
   return (
-    <DataLoader loader={loader}>
-      {(serverInfo) => (
-        <ServerInfoContext.Provider value={serverInfo}>
-          {children}
-        </ServerInfoContext.Provider>
-      )}
-    </DataLoader>
+    <ServerInfoContext.Provider value={serverInfo}>
+      {children}
+    </ServerInfoContext.Provider>
   );
 };

src/dashboard/Dashboard.tsx

@@ -26,12 +26,13 @@ import { xor } from "lodash-es";
 
 import { useRealm } from "../context/realm-context/RealmContext";
 import { useServerInfo } from "../context/server-info/ServerInfoProvider";
-
-import "./dashboard.css";
 import { toUpperCase } from "../util";
 import { HelpItem } from "../components/help-enabler/HelpItem";
 import environment from "../environment";
 
+import "./dashboard.css";
+import { KeycloakSpinner } from "../components/keycloak-spinner/KeycloakSpinner";
+
 const EmptyDashboard = () => {
   const { t } = useTranslation("dashboard");
   const { realm } = useRealm();
@@ -74,6 +75,10 @@ const Dashboard = () => {
     return serverInfo.profileInfo?.previewFeatures?.includes(feature);
   };
 
+  if (Object.keys(serverInfo).length === 0) {
+    return <KeycloakSpinner />;
+  }
+
   return (
     <>
       <PageSection variant="light">