[FIXED JENKINS-16023] Use permalinks for as many Job.getLast*Build methods as possible.

changelog.html

@@ -64,6 +64,9 @@ Upcoming changes</a>
   <li class='major bug'>
     Errors searching build records when builds were misordered.
     (<a href="https://issues.jenkins-ci.org/browse/JENKINS-15652">issue 15652</a>)
+  <li class='major bug'>
+    Finding the last failed build for a job (e.g. from a view column) broke lazy loading.
+    (<a href="https://issues.jenkins-ci.org/browse/JENKINS-16023">issue 16023</a>)
   <li class=bug>
     Do not fail startup in case <code>ListView.includeRegex</code> was syntactically malformed.
   <li class=bug>

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

@@ -26,7 +26,6 @@ package hudson.model;
 import com.google.common.base.Function;
 import com.google.common.collect.Collections2;
 import com.infradna.tool.bridge_method_injector.WithBridgeMethods;
-import hudson.BulkChange;
 import hudson.EnvVars;
 import hudson.Extension;
 import hudson.ExtensionPoint;
@@ -64,7 +63,6 @@ import hudson.widgets.Widget;
 import jenkins.model.BuildDiscarder;
 import jenkins.model.Jenkins;
 import jenkins.model.ProjectNamingStrategy;
-import jenkins.scm.SCMCheckoutStrategy;
 import jenkins.security.HexStringConfidentialKey;
 import jenkins.util.io.OnMaster;
 import net.sf.json.JSONException;
@@ -809,11 +807,7 @@ public abstract class Job<JobT extends Job<JobT, RunT>, RunT extends Run<JobT, R
     @Exported
     @QuickSilver
     public RunT getLastUnsuccessfulBuild() {
-        RunT r = getLastBuild();
-        while (r != null
-                && (r.isBuilding() || r.getResult() == Result.SUCCESS))
-            r = r.getPreviousBuild();
-        return r;
+        return (RunT)Permalink.LAST_UNSUCCESSFUL_BUILD.resolve(this);
     }
 
     /**
@@ -823,11 +817,7 @@ public abstract class Job<JobT extends Job<JobT, RunT>, RunT extends Run<JobT, R
     @Exported
     @QuickSilver
     public RunT getLastUnstableBuild() {
-        RunT r = getLastBuild();
-        while (r != null
-                && (r.isBuilding() || r.getResult() != Result.UNSTABLE))
-            r = r.getPreviousBuild();
-        return r;
+        return (RunT)Permalink.LAST_UNSTABLE_BUILD.resolve(this);
     }
 
     /**
@@ -837,11 +827,7 @@ public abstract class Job<JobT extends Job<JobT, RunT>, RunT extends Run<JobT, R
     @Exported
     @QuickSilver
     public RunT getLastStableBuild() {
-        RunT r = getLastBuild();
-        while (r != null
-                && (r.isBuilding() || r.getResult().isWorseThan(Result.SUCCESS)))
-            r = r.getPreviousBuild();
-        return r;
+        return (RunT)Permalink.LAST_STABLE_BUILD.resolve(this);
     }
 
     /**
@@ -850,10 +836,7 @@ public abstract class Job<JobT extends Job<JobT, RunT>, RunT extends Run<JobT, R
     @Exported
     @QuickSilver
     public RunT getLastFailedBuild() {
-        RunT r = getLastBuild();
-        while (r != null && (r.isBuilding() || r.getResult() != Result.FAILURE))
-            r = r.getPreviousBuild();
-        return r;
+        return (RunT)Permalink.LAST_FAILED_BUILD.resolve(this);
     }
 
     /**

test/src/test/java/hudson/model/JobTest.java

@@ -31,6 +31,7 @@ import com.gargoylesoftware.htmlunit.TextPage;
 import hudson.util.TextFile;
 import java.io.IOException;
 import java.net.HttpURLConnection;
+import java.util.concurrent.Callable;
 import java.util.concurrent.CountDownLatch;
 
 import jenkins.model.ProjectNamingStrategy;
@@ -39,7 +40,9 @@ import static org.junit.Assert.*;
 import org.junit.Rule;
 import org.junit.Test;
 import org.jvnet.hudson.test.Bug;
+import org.jvnet.hudson.test.FailureBuilder;
 import org.jvnet.hudson.test.JenkinsRule;
+import org.jvnet.hudson.test.RunLoadCounter;
 import org.jvnet.hudson.test.recipes.LocalData;
 
 /**
@@ -253,4 +256,25 @@ public class JobTest {
         }
         j.createFreeStyleProject("project");
     }
+
+    @Bug(16023)
+    @Test public void getLastFailedBuild() throws Exception {
+        final FreeStyleProject p = j.createFreeStyleProject();
+        RunLoadCounter.prepare(p);
+        p.getBuildersList().add(new FailureBuilder());
+        j.assertBuildStatus(Result.FAILURE, p.scheduleBuild2(0).get());
+        j.assertBuildStatus(Result.FAILURE, p.scheduleBuild2(0).get());
+        j.assertBuildStatus(Result.FAILURE, p.scheduleBuild2(0).get());
+        p.getBuildersList().remove(FailureBuilder.class);
+        j.assertBuildStatusSuccess(p.scheduleBuild2(0));
+        j.assertBuildStatusSuccess(p.scheduleBuild2(0));
+        j.assertBuildStatusSuccess(p.scheduleBuild2(0));
+        assertEquals(6, p.getLastSuccessfulBuild().getNumber());
+        assertEquals(3, RunLoadCounter.assertMaxLoads(p, 1, new Callable<Integer>() {
+            @Override public Integer call() throws Exception {
+                return p.getLastFailedBuild().getNumber();
+            }
+        }).intValue());
+    }
+
 }