[FIXED JENKINS-14813] 404 canceling queue items.

changelog.html

@@ -55,9 +55,12 @@ Upcoming changes</a>
 <!-- Record your changes in the trunk here. -->
 <div id="trunk" style="display:none"><!--=TRUNK-BEGIN=-->
 <ul class=image>
+  <li class=bug>
+    Avoid a 404 when canceling queue items.
+    (<a href="https://issues.jenkins-ci.org/browse/JENKINS-14813">issue 14813</a>)
   <li class=bug>
     Added missing parameters as defaults when called from CLI
-    (<a href="https://issues.jenkins-ci.org/browse/JENKINS-7162">issue 7162</a>)  
+    (<a href="https://issues.jenkins-ci.org/browse/JENKINS-7162">issue 7162</a>)
   <li class=bug>
     NPE from <code>UpdateSite$Plugin.getNeededDependencies</code>.
     (<a href="https://issues.jenkins-ci.org/browse/JENKINS-14769">issue 14769</a>)

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

@@ -102,6 +102,7 @@ import org.kohsuke.stapler.export.ExportedBean;
 
 import com.thoughtworks.xstream.XStream;
 import com.thoughtworks.xstream.converters.basic.AbstractSingleValueConverter;
+import org.kohsuke.stapler.QueryParameter;
 
 /**
  * Build queue.
@@ -570,6 +571,17 @@ public class Queue extends ResourceController implements Saveable {
         return r;
     }
 
+    /**
+     * Called from {@code queue.jelly} and {@code entries.jelly}.
+     */
+    public HttpResponse doCancelItem(@QueryParameter int id) throws IOException, ServletException {
+        Item item = getItem(id);
+        if (item != null) {
+            cancel(item);
+        } // else too late, ignore (JENKINS-14813)
+        return HttpResponses.forwardToPreviousPage();
+    }
+
     public synchronized boolean isEmpty() {
         return waitingList.isEmpty() && blockedProjects.isEmpty() && buildables.isEmpty() && pendings.isEmpty();
     }
@@ -1362,9 +1374,8 @@ public class Queue extends ResourceController implements Saveable {
 			return null;
 		}
 
-        /**
-         * Called from queue.jelly.
-         */
+        /** @deprecated Use {@link #doCancelItem} instead. */
+        @Deprecated
         public HttpResponse doCancelQueue() throws IOException, ServletException {
         	Jenkins.getInstance().getQueue().cancel(this);
             return HttpResponses.forwardToPreviousPage();

core/src/main/resources/hudson/widgets/BuildHistoryWidget/entries.jelly

@@ -43,7 +43,7 @@ THE SOFTWARE.
         <td style="white-space:normal;" colspan="2">
           <div style="float:right">
             <j:if test="${item.hasCancelPermission()}">
-              <a href="${rootURL}/queue/item/${item.id}/cancelQueue">
+              <a href="${rootURL}/queue/cancelItem?id=${item.id}">
                 <img src="${imagesURL}/16x16/stop.png" alt="${%cancel this build}" height="16" width="16"/>
               </a>
             </j:if>

core/src/main/resources/lib/hudson/queue.jelly

@@ -79,7 +79,7 @@ THE SOFTWARE.
             </td>
             <td class="pane" width="16" align="center" valign="middle">
               <j:if test="${item.hasCancelPermission()}">
-                <a href="${rootURL}/queue/item/${item.id}/cancelQueue"><img src="${imagesURL}/16x16/stop.png" alt="cancel this build" height="16" width="16"/></a>
+                <a href="${rootURL}/queue/cancelItem?id=${item.id}"><img src="${imagesURL}/16x16/stop.png" alt="cancel this build" height="16" width="16"/></a>
               </j:if>
              </td>
           </tr>