From 86bfc252a9cf7c093fd3f904bdb7ecab696d56bc Mon Sep 17 00:00:00 2001
From: Jim Klimov <jimklimov+jenkinsci@gmail.com>
Date: Tue, 21 Apr 2026 13:19:11 +0200
Subject: [PATCH] ReplayAction: java/jelly: constrain showing the Rebuild link
 (when Replay is not permitted) only if Rebuilder plugin does not do the same
 (better) [JENKINS-76292]

Also do not show a Rebuild link if it is not enabled generally
(permissions, disabled job, etc.)

Signed-off-by: Jim Klimov <jimklimov+jenkinsci@gmail.com>
---
 .../workflow/cps/replay/ReplayAction.java     | 22 +++++++++++++++++++
 .../cps/replay/ReplayAction/index.jelly       | 20 +++++++++--------
 2 files changed, 33 insertions(+), 9 deletions(-)

diff --git a/plugin/src/main/java/org/jenkinsci/plugins/workflow/cps/replay/ReplayAction.java b/plugin/src/main/java/org/jenkinsci/plugins/workflow/cps/replay/ReplayAction.java
index 67ecdde74..b4fd25515 100644
--- a/plugin/src/main/java/org/jenkinsci/plugins/workflow/cps/replay/ReplayAction.java
+++ b/plugin/src/main/java/org/jenkinsci/plugins/workflow/cps/replay/ReplayAction.java
@@ -141,6 +141,7 @@ public String getUrlName() {
         return null;
     }
 
+    /** Offer a fallback Rebuild link if Replay is not permitted? */
     /* accessible to Jelly */ public boolean isRebuildEnabled() {
         if (!run.hasPermission(Item.BUILD)) {
             return false;
@@ -148,6 +149,27 @@ public String getUrlName() {
         if (!run.getParent().isBuildable()) {
             return false;
         }
+        if (Jenkins.get().getPlugin("rebuild") != null) {
+            // Go via reflection to avoid a pom.xml (and subsequent
+            // Jenkins controller) dependency on the "competing" plugin:
+            try {
+                Class<?> abstractRebuildAction = Jenkins.get()
+                        .getPluginManager()
+                        .uberClassLoader
+                        .loadClass("com.sonyericsson.rebuild.AbstractRebuildAction");
+                if ((Boolean)
+                        abstractRebuildAction.getMethod("isRebuildAvailable").invoke(null)) {
+                    // THAT plugin will handle the Rebuild link better
+                    // (parameterized if need be), so we here should
+                    // show nothing at all
+                    return false;
+                }
+            } catch (ClassNotFoundException e) {
+                // ignore
+            } catch (Exception e) {
+                LOGGER.log(Level.WARNING, "failed to check for rebuild-plugin", e);
+            }
+        }
 
         return true;
     }
diff --git a/plugin/src/main/resources/org/jenkinsci/plugins/workflow/cps/replay/ReplayAction/index.jelly b/plugin/src/main/resources/org/jenkinsci/plugins/workflow/cps/replay/ReplayAction/index.jelly
index c4730f327..819cb0555 100644
--- a/plugin/src/main/resources/org/jenkinsci/plugins/workflow/cps/replay/ReplayAction/index.jelly
+++ b/plugin/src/main/resources/org/jenkinsci/plugins/workflow/cps/replay/ReplayAction/index.jelly
@@ -29,15 +29,17 @@
                         </f:form>
                     </j:when>
                     <j:otherwise>
-                        <h1>${%Rebuild(it.owner.displayName)}</h1>
-                        <p>
-                            <j:out value="${%blurb.rebuild}"/>
-                        </p>
-                        <f:form action="rebuild" method="POST" name="rebuild">
-                            <f:bottomButtonBar>
-                                <f:submit value="${%Run}"/>
-                            </f:bottomButtonBar>
-                        </f:form>
+                        <j:when test="${it.rebuildEnabled}">
+                            <h1>${%Rebuild(it.owner.displayName)}</h1>
+                            <p>
+                                <j:out value="${%blurb.rebuild}"/>
+                            </p>
+                            <f:form action="rebuild" method="POST" name="rebuild">
+                                <f:bottomButtonBar>
+                                    <f:submit value="${%Run}"/>
+                                </f:bottomButtonBar>
+                            </f:form>
+                        </j:when>
                     </j:otherwise>
                 </j:choose>
             </j:if>