Prevent exception in the log (#22201)

Also speed up the external link check by avoiding checking each bug submission link in the rendered docs which only differs by its parameter.

Closes #22200

.github/workflows/documentation.yml

@@ -48,18 +48,12 @@ jobs:
         name: Maven cache
         uses: ./.github/actions/maven-cache
 
-      - id: build-documentation
-        name: Build Keycloak
+      - id: build-test-documentation
+        name: Build and verify Keycloak documentation
         shell: bash
         run: |
           MVN_HTTP_CONFIG="-Dhttp.keepAlive=false -Dmaven.wagon.http.pool=false -Dmaven.wagon.http.retryHandler.class=standard -Dmaven.wagon.http.retryHandler.count=3 -Dmaven.wagon.httpconnectionManager.ttlSeconds=120"
-          ./mvnw install -DskipTests -am -pl docs/documentation/tests,docs/documentation/dist -nsu -B -e $MVN_HTTP_CONFIG -Pdocumentation
-
-      - id: test-documentation
-        name: Verify Keycloak documentation
-        shell: bash
-        run: |
-          ./mvnw test -Dtest=!ExternalLinksTest -am -pl docs/documentation/tests,docs/documentation/dist -nsu -B -e -Pdocumentation 
+          ./mvnw install -Dtest=!ExternalLinksTest -am -pl docs/documentation/tests,docs/documentation/dist -nsu -B -e $MVN_HTTP_CONFIG -Pdocumentation
 
       - id: upload-keycloak-documentation
         name: Upload Keycloak documentation
@@ -85,18 +79,12 @@ jobs:
         name: Maven cache
         uses: ./.github/actions/maven-cache
 
-      - id: build-documentation
-        name: Build Keycloak
+      - id: build-test-documentation
+        name: Build and verify Keycloak documentation
         shell: bash
         run: |
           MVN_HTTP_CONFIG="-Dhttp.keepAlive=false -Dmaven.wagon.http.pool=false -Dmaven.wagon.http.retryHandler.class=standard -Dmaven.wagon.http.retryHandler.count=3 -Dmaven.wagon.httpconnectionManager.ttlSeconds=120"
-          ./mvnw install -DskipTests -am -pl docs/documentation/tests -nsu -B -e -Pdocumentation $MVN_HTTP_CONFIG 
-
-      - id: test-documentation
-        name: Verify Keycloak documentation
-        shell: bash
-        run: |
-          ./mvnw test -Dtest=ExternalLinksTest -am -pl docs/documentation/tests,docs/documentation/dist -nsu -B -e -Pdocumentation
+          ./mvnw install -Dtest=ExternalLinksTest -am -pl docs/documentation/tests -nsu -B -e -Pdocumentation $MVN_HTTP_CONFIG 
 
   check:
     name: Status Check - Keycloak Documentation

docs/documentation/tests/pom.xml

@@ -4,6 +4,11 @@
 
     <properties>
         <version.log4j>2.17.1</version.log4j>
+        <!-- this property prevents the warning "WARN FilenoUtil: Native subprocess control requires open access" when using JRuby for the unit tests on JDK17 -->
+        <surefire.system.args>
+            --add-opens=java.base/sun.nio.ch=ALL-UNNAMED
+            --add-opens java.base/java.io=ALL-UNNAMED
+        </surefire.system.args>
     </properties>
 
     <build>
@@ -134,7 +139,7 @@
         <dependency>
             <groupId>org.asciidoctor</groupId>
             <artifactId>asciidoctorj</artifactId>
-            <version>2.1.0</version>
+            <version>2.5.10</version>
             <scope>test</scope>
         </dependency>
         <dependency>

docs/documentation/tests/src/test/java/org/keycloak/documentation/test/ExternalLinksTest.java

@@ -1,6 +1,8 @@
 package org.keycloak.documentation.test;
 
+import org.junit.jupiter.api.AfterAll;
 import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.MethodSource;
 import org.keycloak.documentation.test.utils.LinkUtils;
@@ -10,11 +12,24 @@ import java.util.List;
 
 public class ExternalLinksTest {
 
+    static LinkUtils linkUtils = LinkUtils.getInstance();
+
+    @BeforeAll
+    public static void setup() {
+        linkUtils = LinkUtils.getInstance();
+    }
+
+    @AfterAll
+    public static void close() {
+        // this will save a cache with all verified links that will expire after one day.
+        linkUtils.close();
+    }
+
     @ParameterizedTest
     @MethodSource("org.keycloak.documentation.test.Guides#guides()")
     public void checkExternalLinks(String guideName) throws IOException {
         Guide guide = new Guide(guideName);
-        List<LinkUtils.InvalidLink> invalidLinks = LinkUtils.getInstance().findInvalidLinks(guide);
+        List<LinkUtils.InvalidLink> invalidLinks = linkUtils.findInvalidLinks(guide);
         if (!invalidLinks.isEmpty()) {
             StringBuilder sb = new StringBuilder();
             sb.append("Broken links (" + invalidLinks.size() + ") in guide '" + guideName + "': ");

docs/documentation/tests/src/test/resources/ignored-links

@@ -41,3 +41,4 @@ https://kubernetes.io/docs/tutorials/stateful-application/basic-stateful-set/#ro
 https://github.com/keycloak/keycloak/blob/main/docs/tests.md#kerberos-server
 https://github.com/apache/felix-dev/tree/master/http#using-the-osgi-http-whiteboard
 https://github.com/keycloak/keycloak/blob/025778fe9c745316f80b53fe3052aeb314e868ef/js/apps/admin-ui/public/locales/en/dashboard.json#L3
+https://github.com/keycloak/keycloak/issues/new?*