List projects by scanning the managed Git directory

Rather than locating projects in the database table, perform a
recursive scan of the managed repository directory and pull up
anything that we find.  This is a first step towards moving all
the project control metadata directly into Git.

Bug: issue 436
Change-Id: I08e0083f14f5c03eb9e49b4895c265d13b828534
Signed-off-by: Shawn O. Pearce <sop@google.com>

gerrit-httpd/src/main/java/com/google/gerrit/httpd/rpc/SuggestServiceImpl.java

@@ -30,8 +30,9 @@ import com.google.gerrit.server.account.AccountCache;
 import com.google.gerrit.server.account.GroupControl;
 import com.google.gerrit.server.config.AuthConfig;
 import com.google.gerrit.server.config.GerritServerConfig;
+import com.google.gerrit.server.project.NoSuchProjectException;
 import com.google.gerrit.server.project.ProjectCache;
-import com.google.gerrit.server.project.ProjectState;
+import com.google.gerrit.server.project.ProjectControl;
 import com.google.gwt.user.client.rpc.AsyncCallback;
 import com.google.gwtorm.client.OrmException;
 import com.google.inject.Inject;
@@ -52,6 +53,7 @@ class SuggestServiceImpl extends BaseServiceImplementation implements
   private static final String MAX_SUFFIX = "\u9fa5";
 
   private final AuthConfig authConfig;
+  private final ProjectControl.Factory projectControlFactory;
   private final ProjectCache projectCache;
   private final AccountCache accountCache;
   private final GroupControl.Factory groupControlFactory;
@@ -62,6 +64,7 @@ class SuggestServiceImpl extends BaseServiceImplementation implements
   @Inject
   SuggestServiceImpl(final Provider<ReviewDb> schema,
       final AuthConfig authConfig,
+      final ProjectControl.Factory projectControlFactory,
       final ProjectCache projectCache, final AccountCache accountCache,
       final GroupControl.Factory groupControlFactory,
       final IdentifiedUser.GenericFactory userFactory,
@@ -69,6 +72,7 @@ class SuggestServiceImpl extends BaseServiceImplementation implements
       @GerritServerConfig final Config cfg) {
     super(schema, currentUser);
     this.authConfig = authConfig;
+    this.projectControlFactory = projectControlFactory;
     this.projectCache = projectCache;
     this.accountCache = accountCache;
     this.groupControlFactory = groupControlFactory;
@@ -80,24 +84,24 @@ class SuggestServiceImpl extends BaseServiceImplementation implements
 
   public void suggestProjectNameKey(final String query, final int limit,
       final AsyncCallback<List<Project.NameKey>> callback) {
-    run(callback, new Action<List<Project.NameKey>>() {
+    final int max = 10;
-      public List<Project.NameKey> run(final ReviewDb db) throws OrmException {
+    final int n = limit <= 0 ? max : Math.min(limit, max);
-        final String a = query;
-        final String b = a + MAX_SUFFIX;
-        final int max = 10;
-        final int n = limit <= 0 ? max : Math.min(limit, max);
 
-        final CurrentUser user = currentUser.get();
+    final List<Project.NameKey> r = new ArrayList<Project.NameKey>(n);
-        final List<Project.NameKey> r = new ArrayList<Project.NameKey>();
+    for (final Project.NameKey nameKey : projectCache.byName(query)) {
-        for (final Project p : db.projects().suggestByName(a, b, n)) {
+      final ProjectControl ctl;
-          final ProjectState e = projectCache.get(p.getNameKey());
+      try {
-          if (e != null && e.controlFor(user).isVisible()) {
+        ctl = projectControlFactory.validateFor(nameKey);
-            r.add(p.getNameKey());
+      } catch (NoSuchProjectException e) {
-          }
+        continue;
-        }
-        return r;
       }
-    });
+
+      r.add(ctl.getProject().getNameKey());
+      if (r.size() == n) {
+        break;
+      }
+    }
+    callback.onSuccess(r);
   }
 
   public void suggestAccount(final String query, final Boolean active,

gerrit-httpd/src/main/java/com/google/gerrit/httpd/rpc/project/VisibleProjects.java

@@ -17,11 +17,9 @@ package com.google.gerrit.httpd.rpc.project;
 
 import com.google.gerrit.httpd.rpc.Handler;
 import com.google.gerrit.reviewdb.Project;
-import com.google.gerrit.reviewdb.ReviewDb;
-import com.google.gerrit.server.CurrentUser;
 import com.google.gerrit.server.project.NoSuchProjectException;
+import com.google.gerrit.server.project.ProjectCache;
 import com.google.gerrit.server.project.ProjectControl;
-import com.google.gwtorm.client.OrmException;
 import com.google.inject.Inject;
 
 import java.util.ArrayList;
@@ -35,33 +33,26 @@ class VisibleProjects extends Handler<List<Project>> {
   }
 
   private final ProjectControl.Factory projectControlFactory;
-  private final CurrentUser user;
+  private final ProjectCache projectCache;
-  private final ReviewDb db;
 
   @Inject
   VisibleProjects(final ProjectControl.Factory projectControlFactory,
-      final CurrentUser user, final ReviewDb db) {
+       final ProjectCache projectCache) {
     this.projectControlFactory = projectControlFactory;
-    this.user = user;
+    this.projectCache = projectCache;
-    this.db = db;
   }
 
   @Override
-  public List<Project> call() throws OrmException {
+  public List<Project> call() {
-    final List<Project> result;
+    List<Project> result = new ArrayList<Project>();
-    if (user.isAdministrator()) {
+    for (Project.NameKey p : projectCache.all()) {
-      result = db.projects().all().toList();
+      try {
-    } else {
+        ProjectControl c = projectControlFactory.controlFor(p);
-      result = new ArrayList<Project>();
+        if (c.isVisible() || c.isOwner()) {
-      for (Project p : db.projects().all().toList()) {
+          result.add(c.getProject());
-        try {
-          ProjectControl c = projectControlFactory.controlFor(p.getNameKey());
-          if (c.isVisible() || c.isOwner()) {
-            result.add(p);
-          }
-        } catch (NoSuchProjectException e) {
-          continue;
         }
+      } catch (NoSuchProjectException e) {
+        continue;
       }
     }
     Collections.sort(result, new Comparator<Project>() {

gerrit-reviewdb/src/main/java/com/google/gerrit/reviewdb/Project.java

@@ -21,7 +21,7 @@ import com.google.gwtorm.client.StringKey;
 public final class Project {
   /** Project name key */
   public static class NameKey extends
-      StringKey<com.google.gwtorm.client.Key<?>> {
+      StringKey<com.google.gwtorm.client.Key<?>> implements Comparable<NameKey> {
     private static final long serialVersionUID = 1L;
 
     @Column(id = 1)
@@ -44,6 +44,11 @@ public final class Project {
       name = newValue;
     }
 
+    @Override
+    public int compareTo(NameKey other) {
+      return get().compareTo(other.get());
+    }
+
     /** Parse a Project.NameKey out of a string representation. */
     public static NameKey parse(final String str) {
       final NameKey r = new NameKey();

gerrit-reviewdb/src/main/java/com/google/gerrit/reviewdb/ProjectAccess.java

@@ -26,8 +26,4 @@ public interface ProjectAccess extends Access<Project, Project.NameKey> {
 
   @Query("ORDER BY name")
   ResultSet<Project> all() throws OrmException;
-
-  @Query("WHERE name.name >= ? AND name.name <= ? ORDER BY name LIMIT ?")
-  ResultSet<Project> suggestByName(String nameA, String nameB, int limit)
-      throws OrmException;
 }

gerrit-server/src/main/java/com/google/gerrit/server/git/GitRepositoryManager.java

@@ -21,7 +21,7 @@ import org.eclipse.jgit.errors.RepositoryNotFoundException;
 import org.eclipse.jgit.lib.Repository;
 
 import java.io.IOException;
-
+import java.util.SortedSet;
 
 /**
  * Manages Git repositories for the Gerrit server process.
@@ -58,6 +58,9 @@ public interface GitRepositoryManager {
   public abstract Repository createRepository(Project.NameKey name)
       throws RepositoryNotFoundException;
 
+  /** @return set of all known projects, sorted by natural NameKey order. */
+  public abstract SortedSet<Project.NameKey> list();
+
   /**
    * Read the {@code GIT_DIR/description} file for gitweb.
    * <p>

gerrit-server/src/main/java/com/google/gerrit/server/git/LocalDiskRepositoryManager.java

@@ -41,6 +41,9 @@ import org.slf4j.LoggerFactory;
 import java.io.File;
 import java.io.FileNotFoundException;
 import java.io.IOException;
+import java.util.Collections;
+import java.util.SortedSet;
+import java.util.TreeSet;
 
 /** Manages Git repositories stored on the local filesystem. */
 @Singleton
@@ -227,4 +230,46 @@ public class LocalDiskRepositoryManager implements GitRepositoryManager {
 
     return false; // is a reasonable name
   }
+
+  @Override
+  public SortedSet<Project.NameKey> list() {
+    SortedSet<Project.NameKey> names = new TreeSet<Project.NameKey>();
+    scanProjects(basePath, "", names);
+    return Collections.unmodifiableSortedSet(names);
+  }
+
+  private void scanProjects(final File dir, final String prefix,
+      final SortedSet<Project.NameKey> names) {
+    final File[] ls = dir.listFiles();
+    if (ls == null) {
+      return;
+    }
+
+    for (File f : ls) {
+      String fileName = f.getName();
+      if (FileKey.isGitRepository(f, FS.DETECTED)) {
+        String projectName;
+        if (fileName.equals(Constants.DOT_GIT)) {
+          projectName = prefix.substring(0, prefix.length() - 1);
+
+        } else if (fileName.endsWith(Constants.DOT_GIT_EXT)) {
+          int newLen = fileName.length() - Constants.DOT_GIT_EXT.length();
+          projectName = prefix + fileName.substring(0, newLen);
+
+        } else {
+          projectName = prefix + fileName;
+        }
+
+        Project.NameKey nameKey = new Project.NameKey(projectName);
+        if (isUnreasonableName(nameKey)) {
+          log.warn("Ignoring unreasonably named repository " + f.getAbsolutePath());
+        } else {
+          names.add(nameKey);
+        }
+
+      } else if (f.isDirectory()) {
+        scanProjects(f, prefix + f.getName() + "/", names);
+      }
+    }
+  }
 }

gerrit-server/src/main/java/com/google/gerrit/server/git/PushAllProjectsOp.java

@@ -15,10 +15,8 @@
 package com.google.gerrit.server.git;
 
 import com.google.gerrit.reviewdb.Project;
-import com.google.gerrit.reviewdb.ReviewDb;
 import com.google.gerrit.server.config.WildProjectName;
-import com.google.gwtorm.client.OrmException;
+import com.google.gerrit.server.project.ProjectCache;
-import com.google.gwtorm.client.SchemaFactory;
 import com.google.inject.Inject;
 import com.google.inject.assistedinject.Assisted;
 
@@ -37,18 +35,17 @@ public class PushAllProjectsOp extends DefaultQueueOp {
   private static final Logger log =
       LoggerFactory.getLogger(PushAllProjectsOp.class);
 
-  private final SchemaFactory<ReviewDb> schema;
+  private final ProjectCache projectCache;
   private final ReplicationQueue replication;
   private final Project.NameKey wildProject;
   private final String urlMatch;
 
   @Inject
-  public PushAllProjectsOp(final WorkQueue wq,
+  public PushAllProjectsOp(final WorkQueue wq, final ProjectCache projectCache,
-      final SchemaFactory<ReviewDb> sf, final ReplicationQueue rq,
+      final ReplicationQueue rq, @WildProjectName final Project.NameKey wp,
-      @WildProjectName final Project.NameKey wp,
       @Assisted @Nullable final String urlMatch) {
     super(wq);
-    this.schema = sf;
+    this.projectCache = projectCache;
     this.replication = rq;
     this.wildProject = wp;
     this.urlMatch = urlMatch;
@@ -63,17 +60,12 @@ public class PushAllProjectsOp extends DefaultQueueOp {
 
   public void run() {
     try {
-      final ReviewDb db = schema.open();
+      for (final Project.NameKey nameKey : projectCache.all()) {
-      try {
+        if (!nameKey.equals(wildProject)) {
-        for (final Project project : db.projects().all()) {
+          replication.scheduleFullSync(nameKey, urlMatch);
-          if (!project.getNameKey().equals(wildProject)) {
-            replication.scheduleFullSync(project.getNameKey(), urlMatch);
-          }
         }
-      } finally {
-        db.close();
       }
-    } catch (OrmException e) {
+    } catch (RuntimeException e) {
       log.error("Cannot enumerate known projects", e);
     }
   }

gerrit-server/src/main/java/com/google/gerrit/server/project/ProjectCache.java

@@ -31,4 +31,18 @@ public interface ProjectCache {
 
   /** Invalidate the cached information about all projects. */
   public void evictAll();
+
+  /** @return sorted iteration of projects. */
+  public abstract Iterable<Project.NameKey> all();
+
+  /**
+   * Filter the set of registered project names by common prefix.
+   *
+   * @param prefix common prefix.
+   * @return sorted iteration of projects sharing the same prefix.
+   */
+  public abstract Iterable<Project.NameKey> byName(String prefix);
+
+  /** Notify the cache that a new project was constructed. */
+  public void onCreateProject(Project.NameKey newProjectName);
 }

gerrit-server/src/main/java/com/google/gerrit/server/project/ProjectCacheImpl.java

@@ -20,6 +20,7 @@ import com.google.gerrit.reviewdb.ReviewDb;
 import com.google.gerrit.server.cache.Cache;
 import com.google.gerrit.server.cache.CacheModule;
 import com.google.gerrit.server.cache.EntryCreator;
+import com.google.gerrit.server.git.GitRepositoryManager;
 import com.google.gwtorm.client.SchemaFactory;
 import com.google.inject.Inject;
 import com.google.inject.Module;
@@ -29,19 +30,31 @@ import com.google.inject.name.Named;
 
 import java.util.Collection;
 import java.util.Collections;
+import java.util.Iterator;
+import java.util.NoSuchElementException;
+import java.util.SortedSet;
+import java.util.TreeSet;
+import java.util.concurrent.locks.Lock;
+import java.util.concurrent.locks.ReentrantLock;
 
 /** Cache of project information, including access rights. */
 @Singleton
 public class ProjectCacheImpl implements ProjectCache {
   private static final String CACHE_NAME = "projects";
+  private static final String CACHE_LIST = "project_list";
 
   public static Module module() {
     return new CacheModule() {
       @Override
       protected void configure() {
-        final TypeLiteral<Cache<Project.NameKey, ProjectState>> type =
+        final TypeLiteral<Cache<Project.NameKey, ProjectState>> nameType =
             new TypeLiteral<Cache<Project.NameKey, ProjectState>>() {};
-        core(type, CACHE_NAME).populateWith(Loader.class);
+        core(nameType, CACHE_NAME).populateWith(Loader.class);
+
+        final TypeLiteral<Cache<ListKey, SortedSet<Project.NameKey>>> listType =
+            new TypeLiteral<Cache<ListKey, SortedSet<Project.NameKey>>>() {};
+        core(listType, CACHE_LIST).populateWith(Lister.class);
+
         bind(ProjectCacheImpl.class);
         bind(ProjectCache.class).to(ProjectCacheImpl.class);
       }
@@ -49,11 +62,16 @@ public class ProjectCacheImpl implements ProjectCache {
   }
 
   private final Cache<Project.NameKey, ProjectState> byName;
+  private final Cache<ListKey,SortedSet<Project.NameKey>> list;
+  private final Lock listLock;
 
   @Inject
   ProjectCacheImpl(
-      @Named(CACHE_NAME) final Cache<Project.NameKey, ProjectState> byName) {
+      @Named(CACHE_NAME) final Cache<Project.NameKey, ProjectState> byName,
+      @Named(CACHE_LIST) final Cache<ListKey, SortedSet<Project.NameKey>> list) {
     this.byName = byName;
+    this.list = list;
+    this.listLock = new ReentrantLock(true /* fair */);
   }
 
   /**
@@ -78,6 +96,74 @@ public class ProjectCacheImpl implements ProjectCache {
     byName.removeAll();
   }
 
+  @Override
+  public void onCreateProject(Project.NameKey newProjectName) {
+    listLock.lock();
+    try {
+      SortedSet<Project.NameKey> n = list.get(ListKey.ALL);
+      n = new TreeSet<Project.NameKey>(n);
+      n.add(newProjectName);
+      list.put(ListKey.ALL, Collections.unmodifiableSortedSet(n));
+    } finally {
+      listLock.unlock();
+    }
+  }
+
+  @Override
+  public Iterable<Project.NameKey> all() {
+    return list.get(ListKey.ALL);
+  }
+
+  @Override
+  public Iterable<Project.NameKey> byName(final String pfx) {
+    return new Iterable<Project.NameKey>() {
+      @Override
+      public Iterator<Project.NameKey> iterator() {
+        return new Iterator<Project.NameKey>() {
+          private Project.NameKey next;
+          private Iterator<Project.NameKey> itr =
+              list.get(ListKey.ALL).tailSet(new Project.NameKey(pfx)).iterator();
+
+          @Override
+          public boolean hasNext() {
+            if (next != null) {
+              return true;
+            }
+
+            if (!itr.hasNext()) {
+              return false;
+            }
+
+            Project.NameKey r = itr.next();
+            if (r.get().startsWith(pfx)) {
+              next = r;
+              return true;
+            } else {
+              itr = Collections.<Project.NameKey> emptyList().iterator();
+              return false;
+            }
+          }
+
+          @Override
+          public Project.NameKey next() {
+            if (!hasNext()) {
+              throw new NoSuchElementException();
+            }
+
+            Project.NameKey r = next;
+            next = null;
+            return r;
+          }
+
+          @Override
+          public void remove() {
+            throw new UnsupportedOperationException();
+          }
+        };
+      }
+    };
+  }
+
   static class Loader extends EntryCreator<Project.NameKey, ProjectState> {
     private final ProjectState.Factory projectStateFactory;
     private final SchemaFactory<ReviewDb> schema;
@@ -107,4 +193,25 @@ public class ProjectCacheImpl implements ProjectCache {
       }
     }
   }
+
+  static class ListKey {
+    static final ListKey ALL = new ListKey();
+
+    private ListKey() {
+    }
+  }
+
+  static class Lister extends EntryCreator<ListKey, SortedSet<Project.NameKey>> {
+    private final GitRepositoryManager mgr;
+
+    @Inject
+    Lister(GitRepositoryManager mgr) {
+      this.mgr = mgr;
+    }
+
+    @Override
+    public SortedSet<Project.NameKey> createEntry(ListKey key) throws Exception {
+      return mgr.list();
+    }
+  }
 }

gerrit-server/src/main/java/com/google/gerrit/server/query/change/ChangeQueryBuilder.java

@@ -30,6 +30,7 @@ import com.google.gerrit.server.config.WildProjectName;
 import com.google.gerrit.server.git.GitRepositoryManager;
 import com.google.gerrit.server.patch.PatchListCache;
 import com.google.gerrit.server.project.ChangeControl;
+import com.google.gerrit.server.project.ProjectCache;
 import com.google.gerrit.server.query.IntPredicate;
 import com.google.gerrit.server.query.Predicate;
 import com.google.gerrit.server.query.QueryBuilder;
@@ -107,6 +108,7 @@ public class ChangeQueryBuilder extends QueryBuilder<ChangeData> {
     final Project.NameKey wildProjectName;
     final PatchListCache patchListCache;
     final GitRepositoryManager repoManager;
+    final ProjectCache projectCache;
 
     @Inject
     Arguments(Provider<ReviewDb> dbProvider,
@@ -118,7 +120,8 @@ public class ChangeQueryBuilder extends QueryBuilder<ChangeData> {
         AuthConfig authConfig, ApprovalTypes approvalTypes,
         @WildProjectName Project.NameKey wildProjectName,
         PatchListCache patchListCache,
-        GitRepositoryManager repoManager) {
+        GitRepositoryManager repoManager,
+        ProjectCache projectCache) {
       this.dbProvider = dbProvider;
       this.rewriter = rewriter;
       this.userFactory = userFactory;
@@ -131,6 +134,7 @@ public class ChangeQueryBuilder extends QueryBuilder<ChangeData> {
       this.wildProjectName = wildProjectName;
       this.patchListCache = patchListCache;
       this.repoManager = repoManager;
+      this.projectCache = projectCache;
     }
   }
 
@@ -508,23 +512,19 @@ public class ChangeQueryBuilder extends QueryBuilder<ChangeData> {
       // Try to match a project name by substring query.
       final List<ProjectPredicate> predicate =
           new ArrayList<ProjectPredicate>();
-      try {
+      for (Project.NameKey name : args.projectCache.all()) {
-        for (final Project p : args.dbProvider.get().projects().all()) {
+        if (name.get().toLowerCase().contains(query.toLowerCase())) {
-          if (p.getName().toLowerCase().contains(query.toLowerCase())) {
+          predicate.add(new ProjectPredicate(args.dbProvider, name.get()));
-            predicate.add(new ProjectPredicate(args.dbProvider, p.getName()));
-          }
         }
+      }
 
-        // If two or more projects contains "query" as substring create an
+      // If two or more projects contains "query" as substring create an
-        // OrPredicate holding predicates for all these projects, otherwise if
+      // OrPredicate holding predicates for all these projects, otherwise if
-        // only one contains that, return only that one predicate by itself.
+      // only one contains that, return only that one predicate by itself.
-        if (predicate.size() == 1) {
+      if (predicate.size() == 1) {
-          return predicate.get(0);
+        return predicate.get(0);
-        } else if (predicate.size() > 1) {
+      } else if (predicate.size() > 1) {
-          return Predicate.or(predicate);
+        return Predicate.or(predicate);
-        }
-      } catch (OrmException e) {
-        throw error("Cannot lookup project.", e);
       }
 
       throw error("Unsupported query:" + query);

gerrit-server/src/main/java/com/google/gerrit/server/query/change/ChangeQueryRewriter.java

@@ -38,7 +38,8 @@ public class ChangeQueryRewriter extends QueryRewriter<ChangeData> {
               new ChangeQueryBuilder.Arguments( //
                   new InvalidProvider<ReviewDb>(), //
                   new InvalidProvider<ChangeQueryRewriter>(), //
-                  null, null, null, null, null, null, null, null, null, null), null));
+                  null, null, null, null, null, null, null, //
+                  null, null, null, null), null));
 
   private final Provider<ReviewDb> dbProvider;
 

gerrit-sshd/src/main/java/com/google/gerrit/sshd/commands/CreateProject.java

@@ -27,6 +27,7 @@ import com.google.gerrit.server.config.ProjectCreatorGroups;
 import com.google.gerrit.server.config.ProjectOwnerGroups;
 import com.google.gerrit.server.git.GitRepositoryManager;
 import com.google.gerrit.server.git.ReplicationQueue;
+import com.google.gerrit.server.project.ProjectCache;
 import com.google.gerrit.server.project.ProjectControl;
 import com.google.gerrit.sshd.BaseCommand;
 import com.google.gwtorm.client.OrmException;
@@ -101,6 +102,9 @@ final class CreateProject extends BaseCommand {
   @Inject
   private GitRepositoryManager repoManager;
 
+  @Inject
+  private ProjectCache projectCache;
+
   @Inject
   @ProjectCreatorGroups
   private Set<AccountGroup.Id> projectCreatorGroups;
@@ -223,6 +227,7 @@ final class CreateProject extends BaseCommand {
     }
 
     db.projects().insert(Collections.singleton(newProject));
+    projectCache.onCreateProject(newProject.getNameKey());
   }
 
   private void validateParameters() throws Failure {

gerrit-sshd/src/main/java/com/google/gerrit/sshd/commands/ListProjects.java

@@ -15,7 +15,6 @@
 package com.google.gerrit.sshd.commands;
 
 import com.google.gerrit.reviewdb.Project;
-import com.google.gerrit.reviewdb.ReviewDb;
 import com.google.gerrit.server.IdentifiedUser;
 import com.google.gerrit.server.config.WildProjectName;
 import com.google.gerrit.server.git.GitRepositoryManager;
@@ -23,7 +22,6 @@ import com.google.gerrit.server.project.ProjectCache;
 import com.google.gerrit.server.project.ProjectControl;
 import com.google.gerrit.server.project.ProjectState;
 import com.google.gerrit.sshd.BaseCommand;
-import com.google.gwtorm.client.OrmException;
 import com.google.inject.Inject;
 
 import org.apache.sshd.server.Environment;
@@ -43,9 +41,6 @@ final class ListProjects extends BaseCommand {
   private static final String DEFAULT_TAB_SEPARATOR = "|";
   private static final String NOT_VISIBLE_PROJECT = "(x)";
 
-  @Inject
-  private ReviewDb db;
-
   @Inject
   private IdentifiedUser currentUser;
 
@@ -93,14 +88,14 @@ final class ListProjects extends BaseCommand {
     }
 
     try {
-      for (final Project p : db.projects().all()) {
+      for (final Project.NameKey projectName : projectCache.all()) {
-        if (p.getNameKey().equals(wildProject)) {
+        if (projectName.equals(wildProject)) {
           // This project "doesn't exist". At least not as a repository.
           //
           continue;
         }
 
-        final ProjectState e = projectCache.get(p.getNameKey());
+        final ProjectState e = projectCache.get(projectName);
         if (e == null) {
           // If we can't get it from the cache, pretend its not present.
           //
@@ -118,7 +113,7 @@ final class ListProjects extends BaseCommand {
           }
 
           if (showBranch != null) {
-            final Ref ref = getBranchRef(p.getNameKey());
+            final Ref ref = getBranchRef(projectName);
             if (ref == null || ref.getObjectId() == null
                 || !pctl.controlForRef(ref.getLeaf().getName()).isVisible()) {
               // No branch, or the user can't see this branch, so skip it.
@@ -130,9 +125,10 @@ final class ListProjects extends BaseCommand {
             stdout.print(' ');
           }
 
-          stdout.print(p.getName() + "\n");
+          stdout.print(projectName.get() + "\n");
         } else {
-          treeMap.put(p.getName(), new TreeNode(p, pctl.isVisible()));
+          treeMap.put(projectName.get(),
+              new TreeNode(pctl.getProject(), pctl.isVisible()));
         }
       }
 
@@ -144,7 +140,7 @@ final class ListProjects extends BaseCommand {
         for (final TreeNode key : treeMap.values()) {
           final String parentName = key.getParentName();
           if (parentName != null) {
-            final TreeNode node = treeMap.get((String)parentName);
+            final TreeNode node = treeMap.get(parentName);
             if (node != null) {
               node.addChild(key);
             } else {
@@ -161,8 +157,6 @@ final class ListProjects extends BaseCommand {
         printElement(stdout, fakeRoot, -1, false, sortedNodes.get(sortedNodes.size() - 1));
         stdout.flush();
       }
-    } catch (OrmException e) {
-      throw new Failure(1, "fatal: database error", e);
     } finally {
       stdout.flush();
     }