[FIX JENKINS-33663] - Upgrade wizard

Add Upgrade Wizard
Add 'replace' handlebars method in jenkins.js
Fix state transitions to follow a single basic pattern
Suggested plugins selected by default
Add an install state for INITIAL_SECURITY_SETUP
Removed duplicate setupWizard.js on page [FIX JENKINS-34676]
Exclude plugins which are already installed when determining platform
Change 'snooze' to not look like a 'close' button
Make sure unlock screen doesn't show up after new install
Add compatibility check when offering suggested plugins
More appropriate handling of security token filter

core/src/main/java/hudson/PluginManager.java

@@ -670,7 +670,7 @@ protected static void addDependencies(URL hpiResUrl, String fromPath, Set<URL> d
      */
     protected void loadDetachedPlugins() {
         InstallState installState = Jenkins.getActiveInstance().getInstallState();
-        if (installState == InstallState.UPGRADE) {
+        if (InstallState.UPGRADE.equals(installState)) {
             VersionNumber lastExecVersion = new VersionNumber(InstallUtil.getLastExecVersion());
 
             LOGGER.log(INFO, "Upgrading Jenkins. The last running version was {0}. This Jenkins is version {1}.",
@@ -1199,9 +1199,7 @@ public HttpResponse doUpdateSources(StaplerRequest req) throws IOException {
     public void doInstallPluginsDone() {
         Jenkins j = Jenkins.getInstance();
         j.checkPermission(Jenkins.ADMINISTER);
-        if(InstallState.INITIAL_PLUGINS_INSTALLING.equals(j.getInstallState())) {
-            Jenkins.getInstance().setInstallState(InstallState.INITIAL_PLUGINS_INSTALLING.getNextState());
-        }
+        InstallUtil.proceedToNextStateFrom(InstallState.INITIAL_PLUGINS_INSTALLING);
     }
 
     /**
@@ -1313,20 +1311,18 @@ private List<Future<UpdateCenter.UpdateCenterJob>> install(@Nonnull Collection<S
             installJobs.add(jobFuture);
         }
 
-        if (Jenkins.getActiveInstance().getInstallState() == InstallState.NEW) {
-            trackInitialPluginInstall(installJobs);
-        }
+        trackInitialPluginInstall(installJobs);
 
         return installJobs;
     }
 
     private void trackInitialPluginInstall(@Nonnull final List<Future<UpdateCenter.UpdateCenterJob>> installJobs) {
-        final Jenkins jenkins = Jenkins.getActiveInstance();
+        final Jenkins jenkins = Jenkins.getInstance();
         final UpdateCenter updateCenter = jenkins.getUpdateCenter();
 
-        updateCenter.persistInstallStatus();
-        if (jenkins.getInstallState() == InstallState.NEW) {
+        if (!Jenkins.getInstance().getInstallState().isSetupComplete()) {
             jenkins.setInstallState(InstallState.INITIAL_PLUGINS_INSTALLING);
+            updateCenter.persistInstallStatus();
             new Thread() {
                 @Override
                 public void run() {
@@ -1352,7 +1348,7 @@ public void run() {
                     }
                     updateCenter.persistInstallStatus();
                     if(!failures) {
-                        jenkins.setInstallState(InstallState.INITIAL_PLUGINS_INSTALLING.getNextState());
+                        InstallUtil.proceedToNextStateFrom(InstallState.INITIAL_PLUGINS_INSTALLING);
                     }
                 }
             }.start();

core/src/main/java/jenkins/install/InstallState.java

@@ -24,66 +24,137 @@
 package jenkins.install;
 
 import javax.annotation.CheckForNull;
+import javax.annotation.Nonnull;
 
-import org.kohsuke.accmod.Restricted;
-import org.kohsuke.accmod.restrictions.NoExternalUse;
+import hudson.Extension;
+import hudson.ExtensionList;
+import hudson.ExtensionPoint;
+import jenkins.model.Jenkins;
 
 /**
  * Jenkins install state.
  *
+ * In order to hook into the setup wizard lifecycle, you should
+ * include something in a script that call
+ * to `onSetupWizardInitialized` with a callback, for example:
+ * 
+ * See <em><code>upgradeWizard.js</code></em> for an example
+ * 
  * @author <a href="mailto:tom.fennelly@gmail.com">tom.fennelly@gmail.com</a>
  */
-@Restricted(NoExternalUse.class)
-public enum InstallState {
+public class InstallState implements ExtensionPoint {
     /**
      * Need InstallState != NEW for tests by default
      */
-    UNKNOWN(true, null),
+    @Extension
+    public static final InstallState UNKNOWN = new InstallState("UNKNOWN", true);
+
+    /**
+     * After any setup / restart / etc. hooks are done, states hould be running
+     */
+    @Extension
+    public static final InstallState RUNNING = new InstallState("RUNNING", true);
+
     /**
      * The initial set up has been completed
      */
-    INITIAL_SETUP_COMPLETED(true, null),
+    @Extension
+    public static final InstallState INITIAL_SETUP_COMPLETED = new InstallState("INITIAL_SETUP_COMPLETED", true) {
+        public void initializeState() {
+            Jenkins j = Jenkins.getInstance();
+            try {
+                j.getSetupWizard().completeSetup();
+            } catch (Exception e) {
+                throw new RuntimeException(e);
+            }
+            j.setInstallState(RUNNING);
+        }
+    };
+
     /**
      * Creating an admin user for an initial Jenkins install.
      */
-    CREATE_ADMIN_USER(false, INITIAL_SETUP_COMPLETED),
+    @Extension
+    public static final InstallState CREATE_ADMIN_USER = new InstallState("CREATE_ADMIN_USER", false);
+
     /**
      * New Jenkins install. The user has kicked off the process of installing an
      * initial set of plugins (via the install wizard).
      */
-    INITIAL_PLUGINS_INSTALLING(false, CREATE_ADMIN_USER),
+    @Extension
+    public static final InstallState INITIAL_PLUGINS_INSTALLING = new InstallState("INITIAL_PLUGINS_INSTALLING", false);
+
+    /**
+     * Security setup for a new Jenkins install.
+     */
+    @Extension
+    public static final InstallState INITIAL_SECURITY_SETUP = new InstallState("INITIAL_SECURITY_SETUP", false) {
+        public void initializeState() {
+            try {
+                Jenkins.getInstance().getSetupWizard().init(true);
+            } catch (Exception e) {
+                throw new RuntimeException(e);
+            }
+
+            InstallUtil.proceedToNextStateFrom(INITIAL_SECURITY_SETUP);
+        }
+    };
+
     /**
      * New Jenkins install.
      */
-    NEW(false, INITIAL_PLUGINS_INSTALLING),
+    @Extension
+    public static final InstallState NEW = new InstallState("NEW", false);
+
     /**
      * Restart of an existing Jenkins install.
      */
-    RESTART(true, INITIAL_SETUP_COMPLETED),
+    @Extension
+    public static final InstallState RESTART = new InstallState("RESTART", true) {
+        public void initializeState() {
+            InstallUtil.saveLastExecVersion();
+        }
+    };
+
     /**
      * Upgrade of an existing Jenkins install.
      */
-    UPGRADE(true, INITIAL_SETUP_COMPLETED),
+    @Extension
+    public static final InstallState UPGRADE = new UpgradeWizard();
+
     /**
      * Downgrade of an existing Jenkins install.
      */
-    DOWNGRADE(true, INITIAL_SETUP_COMPLETED),
+    @Extension
+    public static final InstallState DOWNGRADE = new InstallState("DOWNGRADE", true) {
+        public void initializeState() {
+            InstallUtil.saveLastExecVersion();
+        }
+    };
+
     /**
      * Jenkins started in test mode (JenkinsRule).
      */
-    TEST(true, INITIAL_SETUP_COMPLETED),
+    public static final InstallState TEST = new InstallState("TEST", true);
+
     /**
      * Jenkins started in development mode: Bolean.getBoolean("hudson.Main.development").
      * Can be run normally with the -Djenkins.install.runSetupWizard=true
      */
-    DEVELOPMENT(true, INITIAL_SETUP_COMPLETED);
+    public static final InstallState DEVELOPMENT = new InstallState("DEVELOPMENT", true);
 
     private final boolean isSetupComplete;
-    private final InstallState nextState;
+    private final String name;
 
-    private InstallState(boolean isSetupComplete, InstallState nextState) {
+    public InstallState(@Nonnull String name, boolean isSetupComplete) {
+        this.name = name;
         this.isSetupComplete = isSetupComplete;
-        this.nextState = nextState;
+    }
+
+    /**
+     * Process any initialization this install state requires
+     */
+    public void initializeState() {
     }
 
     /**
@@ -93,11 +164,47 @@ public boolean isSetupComplete() {
         return isSetupComplete;
     }
 
+    public String name() {
+        return name;
+    }
+
+    @Override
+    public int hashCode() {
+        return name.hashCode();
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if(obj instanceof InstallState) {
+            return name.equals(((InstallState)obj).name());
+        }
+        return false;
+    }
+
+    @Override
+    public String toString() {
+        return "InstallState (" + name + ")";
+    }
+
     /**
-     * Gets the next state
+     * Find an install state by name
+     * @param name
+     * @return
      */
     @CheckForNull
-    public InstallState getNextState() {
-        return nextState;
+    public static InstallState valueOf(@Nonnull String name) {
+        for (InstallState state : all()) {
+            if (name.equals(state.name)) {
+                return state;
+            }
+        }
+        return null;
+    }
+
+    /**
+     * Returns all install states in the system
+     */
+    static ExtensionList<InstallState> all() {
+        return ExtensionList.lookup(InstallState.class);
     }
 }

core/src/main/java/jenkins/install/InstallStateFilter.java

@@ -0,0 +1,26 @@
+package jenkins.install;
+
+import java.util.List;
+
+import javax.inject.Provider;
+
+import hudson.ExtensionList;
+import hudson.ExtensionPoint;
+
+/**
+ * Allows plugging in to the lifecycle when determining InstallState
+ * from {@link InstallUtil#getNextInstallState(InstallState)}
+ */
+public abstract class InstallStateFilter implements ExtensionPoint {
+    /**
+     * Determine the current or next install state, proceed with `return proceed.next()`
+     */
+    public abstract InstallState getNextInstallState(InstallState current, Provider<InstallState> proceed);
+
+    /**
+     * Get all the InstallStateFilters, in extension order
+     */
+    public static List<InstallStateFilter> all() {
+        return ExtensionList.lookup(InstallStateFilter.class);
+    }
+}