Add WithConsoleUrl interface

core/src/main/java/hudson/Functions.java

@@ -54,7 +54,6 @@
 import hudson.model.ParameterDefinition;
 import hudson.model.ParameterDefinition.ParameterDescriptor;
 import hudson.model.PasswordParameterDefinition;
-import hudson.model.Queue;
 import hudson.model.Run;
 import hudson.model.Slave;
 import hudson.model.TimeZoneProperty;
@@ -153,6 +152,7 @@
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 import jenkins.console.ConsoleUrlProvider;
+import jenkins.console.WithConsoleUrl;
 import jenkins.model.GlobalConfiguration;
 import jenkins.model.GlobalConfigurationCategory;
 import jenkins.model.Jenkins;
@@ -1907,20 +1907,14 @@
     }
 
     /**
-     * Computes the link to the console for the run for the specified executable, taking {@link ConsoleUrlProvider} into account.
-     * @param executable the executable (normally a {@link Run})
-     * @return the absolute URL for accessing the build console for the executable, or null if there is no build associated with the executable
+     * Computes the link to the console for the run for the specified object, taking {@link ConsoleUrlProvider} into account.
+     * @param withConsoleUrl the object to compute a console url for (can be {@link Run}, a {@code PlaceholderExecutable}...)
+     * @return the absolute URL for accessing the build console for the given object, or null if there is no console URL defined for the object.
      * @since 2.433
      */
-    public static @CheckForNull String getConsoleUrl(Queue.Executable executable) {
-        if (executable == null) {
-            return null;
-        } else if (executable instanceof Run) {
-            return ConsoleUrlProvider.getRedirectUrl((Run<?, ?>) executable);
-        } else {
-            // Handles cases such as PlaceholderExecutable for Pipeline node steps.
-            return getConsoleUrl(executable.getParentExecutable());
-        }
+    public static @CheckForNull String getConsoleUrl(WithConsoleUrl withConsoleUrl) {
+        String consoleUrl = withConsoleUrl.getConsoleUrl();
+        return consoleUrl != null ? Stapler.getCurrentRequest().getContextPath() + '/' + consoleUrl : null;
     }
 
     /**

core/src/main/java/hudson/model/Queue.java

@@ -109,6 +109,7 @@
 import java.util.stream.Collectors;
 import javax.servlet.ServletException;
 import javax.servlet.http.HttpServletResponse;
+import jenkins.console.WithConsoleUrl;
 import jenkins.model.Jenkins;
 import jenkins.model.queue.AsynchronousExecution;
 import jenkins.model.queue.CompositeCauseOfBlockage;
@@ -2088,7 +2089,7 @@
      * used to render the HTML that indicates this executable is executing.
      */
     @StaplerAccessibleType
-    public interface Executable extends Runnable {
+    public interface Executable extends Runnable, WithConsoleUrl {
         /**
          * Task from which this executable was created.
          *
@@ -2131,6 +2132,16 @@
             return Executables.getParentOf(this).getEstimatedDuration();
         }
 
+        /**
+         * Handles cases such as {@code PlaceholderExecutable} for Pipeline node steps.
+         * @return by default, that of {@link #getParentExecutable} if defined
+         */
+        @Override
+        default String getConsoleUrl() {
+            Executable parent = getParentExecutable();
+            return parent != null ? parent.getConsoleUrl() : null;
+        }
+
         /**
          * Used to render the HTML. Should be a human readable text of what this executable is.
          */

core/src/main/java/hudson/model/Run.java

@@ -108,6 +108,8 @@
 import java.util.zip.GZIPInputStream;
 import javax.servlet.ServletException;
 import javax.servlet.http.HttpServletResponse;
+import jenkins.console.ConsoleUrlProvider;
+import jenkins.console.WithConsoleUrl;
 import jenkins.model.ArtifactManager;
 import jenkins.model.ArtifactManagerConfiguration;
 import jenkins.model.ArtifactManagerFactory;
@@ -153,7 +155,7 @@
  */
 @ExportedBean
 public abstract class Run<JobT extends Job<JobT, RunT>, RunT extends Run<JobT, RunT>>
-        extends Actionable implements ExtensionPoint, Comparable<RunT>, AccessControlled, PersistenceRoot, DescriptorByNameOwner, OnMaster, StaplerProxy {
+        extends Actionable implements ExtensionPoint, Comparable<RunT>, AccessControlled, PersistenceRoot, DescriptorByNameOwner, OnMaster, StaplerProxy, WithConsoleUrl {
 
     /**
      * The original {@link Queue.Item#getId()} has not yet been mapped onto the {@link Run} instance.
@@ -1055,6 +1057,14 @@ protected void dropLinks() {
         return project.getUrl() + getNumber() + '/';
     }
 
+    /**
+     * @see ConsoleUrlProvider#consoleUrlOf
+     */
+    @Override
+    public String getConsoleUrl() {
+        return ConsoleUrlProvider.consoleUrlOf(this);
+    }
+
     /**
      * Obtains the absolute URL to this build.
      *

core/src/main/java/jenkins/console/ConsoleUrlProvider.java

@@ -62,8 +62,8 @@ public interface ConsoleUrlProvider extends Describable<ConsoleUrlProvider> {
      * Get a URL relative to the context path of Jenkins which should be used to link to the console for the specified build.
      * <p>Should only be used in the context of serving an HTTP request.
      * @param run the build
-     * @return the URL for the console for the specified build, relative to the context of Jenkins, or {@code null}
-     * if this implementation does not want to server a special console view for this build.
+     * @return the URL for the console for the specified build, relative to the context of Jenkins (should not start with {@code /}), or {@code null}
+     * if this implementation does not want to serve a special console view for this build.
      */
     @CheckForNull String getConsoleUrl(Run<?, ?> run);
 
@@ -80,6 +80,14 @@ default Descriptor<ConsoleUrlProvider> getDescriptor() {
      * @return the URL for the console for the specified build, relative to the web server root
      */
     static @NonNull String getRedirectUrl(Run<?, ?> run) {
+        return Stapler.getCurrentRequest().getContextPath() + '/' + run.getConsoleUrl();
+    }
+
+    /**
+     * Looks up the {@link #getConsoleUrl} value from the first provider to offer one.
+     * @since TODO
+     */
+    static @NonNull String consoleUrlOf(Run<?, ?> run) {
         final List<ConsoleUrlProvider> providers = new ArrayList<>();
         User currentUser = User.current();
         if (currentUser != null) {
@@ -104,6 +112,8 @@ default Descriptor<ConsoleUrlProvider> getDescriptor() {
                 if (tempUrl != null) {
                     if (new URI(tempUrl).isAbsolute()) {
                         LOGGER.warning(() -> "Ignoring absolute console URL " + tempUrl + " for " + run + " from " + provider.getClass());
+                    } else if (tempUrl.startsWith("/")) {
+                        LOGGER.warning(() -> "Ignoring URL " + tempUrl + " starting with / for " + run + " from " + provider.getClass());
                     } else {
                         // Found a valid non-null URL.
                         url = tempUrl;
@@ -118,11 +128,7 @@ default Descriptor<ConsoleUrlProvider> getDescriptor() {
             // Reachable if DefaultConsoleUrlProvider is not one of the configured providers, including if no providers are configured at all.
             url = run.getUrl() + "console";
         }
-        if (url.startsWith("/")) {
-            return Stapler.getCurrentRequest().getContextPath() + url;
-        } else {
-            return Stapler.getCurrentRequest().getContextPath() + '/' + url;
-        }
+        return url;
     }
 
     /**

core/src/main/java/jenkins/console/WithConsoleUrl.java

@@ -0,0 +1,43 @@
+/*
+ * The MIT License
+ *
+ * Copyright 2024 CloudBees, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+package jenkins.console;
+
+import edu.umd.cs.findbugs.annotations.CheckForNull;
+import org.kohsuke.accmod.Restricted;
+import org.kohsuke.accmod.restrictions.Beta;
+
+/**
+ * A model object that may have a console URL.
+ */
+@Restricted(Beta.class)
+public interface WithConsoleUrl {
+
+    /**
+     * @return a URL relative to the context root without leading slash, such as {@code job/xxx/123/console};
+     *         or null if unknown or not applicable
+     */
+    @CheckForNull
+    String getConsoleUrl();
+}

test/src/test/java/jenkins/console/ConsoleUrlProviderTest.java

@@ -58,9 +58,9 @@ public void getRedirectUrl() throws Exception {
         // Custom URL without leading slash
         b.setDescription("custom my/build/console");
         assertCustomConsoleUrl(r.contextPath + "/my/build/console", b);
-        // Custom URL with leading slash
+        // Custom URL with leading slash -> not supported, falls back to default
         b.setDescription("custom /my/build/console");
-        assertCustomConsoleUrl(r.contextPath + "/my/build/console", b);
+        assertCustomConsoleUrl(r.contextPath + '/' + b.getUrl() + "console", b);
         // Default URL is used when extensions throw exceptions.
         b.setDescription("NullPointerException");
         assertCustomConsoleUrl(r.contextPath + '/' + b.getUrl() + "console", b);