Merge branch 'stable-2.15'

* stable-2.15:
  Document how to exclude projects from replication

Change-Id: I331973ac31d889ed6c9c552f5e69c1ba09eb4314
diff --git a/BUILD b/BUILD
index 41089c6..7ba3d26 100644
--- a/BUILD
+++ b/BUILD
@@ -14,7 +14,7 @@
     ],
     resources = glob(["src/main/resources/**/*"]),
     deps = [
-        "//lib:commons-io",
+        "//lib/commons:io",
     ],
 )
 
diff --git a/src/main/java/com/googlesource/gerrit/plugins/replication/Destination.java b/src/main/java/com/googlesource/gerrit/plugins/replication/Destination.java
index 926d36f..45071bc 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/replication/Destination.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/replication/Destination.java
@@ -24,9 +24,7 @@
 import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.ImmutableSet.Builder;
 import com.google.common.collect.Lists;
-import com.google.gerrit.common.EventDispatcher;
 import com.google.gerrit.common.data.GroupReference;
-import com.google.gerrit.extensions.client.ProjectState;
 import com.google.gerrit.extensions.config.FactoryModule;
 import com.google.gerrit.extensions.registration.DynamicItem;
 import com.google.gerrit.extensions.restapi.AuthException;
@@ -42,6 +40,7 @@
 import com.google.gerrit.server.account.GroupIncludeCache;
 import com.google.gerrit.server.account.ListGroupMembership;
 import com.google.gerrit.server.config.RequestScopedReviewDbProvider;
+import com.google.gerrit.server.events.EventDispatcher;
 import com.google.gerrit.server.git.GitRepositoryManager;
 import com.google.gerrit.server.git.PerThreadRequestScope;
 import com.google.gerrit.server.git.WorkQueue;
@@ -50,8 +49,8 @@
 import com.google.gerrit.server.permissions.ProjectPermission;
 import com.google.gerrit.server.permissions.RefPermission;
 import com.google.gerrit.server.project.NoSuchProjectException;
-import com.google.gerrit.server.project.PerRequestProjectControlCache;
-import com.google.gerrit.server.project.ProjectControl;
+import com.google.gerrit.server.project.ProjectCache;
+import com.google.gerrit.server.project.ProjectState;
 import com.google.gerrit.server.util.RequestContext;
 import com.google.inject.Injector;
 import com.google.inject.Provider;
@@ -86,9 +85,10 @@
   private final Map<URIish, PushOne> pending = new HashMap<>();
   private final Map<URIish, PushOne> inFlight = new HashMap<>();
   private final PushOne.Factory opFactory;
-  private final ProjectControl.Factory projectControlFactory;
   private final GitRepositoryManager gitManager;
   private final PermissionBackend permissionBackend;
+  private final Provider<CurrentUser> userProvider;
+  private final ProjectCache projectCache;
   private volatile ScheduledExecutorService pool;
   private final PerThreadRequestScope.Scoper threadScoper;
   private final DestinationConfiguration config;
@@ -117,6 +117,8 @@
       PluginUser pluginUser,
       GitRepositoryManager gitRepositoryManager,
       PermissionBackend permissionBackend,
+      Provider<CurrentUser> userProvider,
+      ProjectCache projectCache,
       GroupBackend groupBackend,
       ReplicationStateListener stateLog,
       GroupIncludeCache groupIncludeCache,
@@ -125,6 +127,8 @@
     this.eventDispatcher = eventDispatcher;
     gitManager = gitRepositoryManager;
     this.permissionBackend = permissionBackend;
+    this.userProvider = userProvider;
+    this.projectCache = projectCache;
     this.stateLog = stateLog;
 
     CurrentUser remoteUser;
@@ -151,7 +155,6 @@
               protected void configure() {
                 bindScope(RequestScoped.class, PerThreadRequestScope.REQUEST);
                 bind(PerThreadRequestScope.Propagator.class);
-                bind(PerRequestProjectControlCache.class).in(RequestScoped.class);
 
                 bind(Destination.class).toInstance(Destination.this);
                 bind(RemoteConfig.class).toInstance(config.getRemoteConfig());
@@ -183,7 +186,6 @@
               }
             });
 
-    projectControlFactory = child.getInstance(ProjectControl.Factory.class);
     opFactory = child.getInstance(PushOne.Factory.class);
     threadScoper = child.getInstance(PerThreadRequestScope.Scoper.class);
   }
@@ -223,14 +225,17 @@
     return cnt;
   }
 
-  private boolean shouldReplicate(ProjectControl ctl) throws PermissionBackendException {
-    if (!config.replicateHiddenProjects() && ctl.getProject().getState() == ProjectState.HIDDEN) {
+  private boolean shouldReplicate(ProjectState projectState, CurrentUser user)
+      throws PermissionBackendException {
+    if (!config.replicateHiddenProjects()
+        && projectState.getProject().getState()
+            == com.google.gerrit.extensions.client.ProjectState.HIDDEN) {
       return false;
     }
     try {
       permissionBackend
-          .user(ctl.getUser())
-          .project(ctl.getProject().getNameKey())
+          .user(user)
+          .project(projectState.getNameKey())
           .check(ProjectPermission.ACCESS);
       return true;
     } catch (AuthException e) {
@@ -246,8 +251,19 @@
               new Callable<Boolean>() {
                 @Override
                 public Boolean call() throws NoSuchProjectException, PermissionBackendException {
-                  ProjectControl projectControl = controlFor(project);
-                  if (!shouldReplicate(projectControl)) {
+                  ProjectState projectState;
+                  try {
+                    projectState = projectCache.checkedGet(project);
+                  } catch (IOException e) {
+                    return false;
+                  }
+                  if (projectState == null) {
+                    throw new NoSuchProjectException(project);
+                  }
+                  if (!projectState.statePermitsRead()) {
+                    return false;
+                  }
+                  if (!shouldReplicate(projectState, userProvider.get())) {
                     return false;
                   }
                   if (PushOne.ALL_REFS.equals(ref)) {
@@ -255,7 +271,7 @@
                   }
                   try {
                     permissionBackend
-                        .user(projectControl.getUser())
+                        .user(userProvider)
                         .project(project)
                         .ref(ref)
                         .check(RefPermission.READ);
@@ -282,7 +298,16 @@
               new Callable<Boolean>() {
                 @Override
                 public Boolean call() throws NoSuchProjectException, PermissionBackendException {
-                  return shouldReplicate(controlFor(project));
+                  ProjectState projectState;
+                  try {
+                    projectState = projectCache.checkedGet(project);
+                  } catch (IOException e) {
+                    return false;
+                  }
+                  if (projectState == null) {
+                    throw new NoSuchProjectException(project);
+                  }
+                  return shouldReplicate(projectState, userProvider.get());
                 }
               })
           .call();
@@ -456,10 +481,6 @@
     }
   }
 
-  ProjectControl controlFor(Project.NameKey project) throws NoSuchProjectException {
-    return projectControlFactory.controlFor(project);
-  }
-
   boolean requestRunway(PushOne op) {
     synchronized (stateLock) {
       if (op.wasCanceled()) {
diff --git a/src/main/java/com/googlesource/gerrit/plugins/replication/DestinationFactory.java b/src/main/java/com/googlesource/gerrit/plugins/replication/DestinationFactory.java
index 83eab86..5e41e12 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/replication/DestinationFactory.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/replication/DestinationFactory.java
@@ -14,15 +14,18 @@
 
 package com.googlesource.gerrit.plugins.replication;
 
-import com.google.gerrit.common.EventDispatcher;
 import com.google.gerrit.extensions.registration.DynamicItem;
+import com.google.gerrit.server.CurrentUser;
 import com.google.gerrit.server.PluginUser;
 import com.google.gerrit.server.account.GroupBackend;
 import com.google.gerrit.server.account.GroupIncludeCache;
+import com.google.gerrit.server.events.EventDispatcher;
 import com.google.gerrit.server.git.GitRepositoryManager;
 import com.google.gerrit.server.permissions.PermissionBackend;
+import com.google.gerrit.server.project.ProjectCache;
 import com.google.inject.Inject;
 import com.google.inject.Injector;
+import com.google.inject.Provider;
 import com.google.inject.Singleton;
 
 @Singleton
@@ -32,6 +35,8 @@
   private final PluginUser pluginUser;
   private final GitRepositoryManager gitRepositoryManager;
   private final PermissionBackend permissionBackend;
+  private final Provider<CurrentUser> userProvider;
+  private final ProjectCache projectCache;
   private final GroupBackend groupBackend;
   private final ReplicationStateListener stateLog;
   private final GroupIncludeCache groupIncludeCache;
@@ -44,6 +49,8 @@
       PluginUser pluginUser,
       GitRepositoryManager gitRepositoryManager,
       PermissionBackend permissionBackend,
+      Provider<CurrentUser> userProvider,
+      ProjectCache projectCache,
       GroupBackend groupBackend,
       ReplicationStateListener stateLog,
       GroupIncludeCache groupIncludeCache,
@@ -53,6 +60,8 @@
     this.pluginUser = pluginUser;
     this.gitRepositoryManager = gitRepositoryManager;
     this.permissionBackend = permissionBackend;
+    this.userProvider = userProvider;
+    this.projectCache = projectCache;
     this.groupBackend = groupBackend;
     this.stateLog = stateLog;
     this.groupIncludeCache = groupIncludeCache;
@@ -67,6 +76,8 @@
         pluginUser,
         gitRepositoryManager,
         permissionBackend,
+        userProvider,
+        projectCache,
         groupBackend,
         stateLog,
         groupIncludeCache,
diff --git a/src/main/java/com/googlesource/gerrit/plugins/replication/OnStartStop.java b/src/main/java/com/googlesource/gerrit/plugins/replication/OnStartStop.java
index 227804d..363d350 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/replication/OnStartStop.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/replication/OnStartStop.java
@@ -15,10 +15,10 @@
 package com.googlesource.gerrit.plugins.replication;
 
 import com.google.common.util.concurrent.Atomics;
-import com.google.gerrit.common.EventDispatcher;
 import com.google.gerrit.extensions.events.LifecycleListener;
 import com.google.gerrit.extensions.registration.DynamicItem;
 import com.google.gerrit.extensions.systemstatus.ServerInformation;
+import com.google.gerrit.server.events.EventDispatcher;
 import com.google.inject.Inject;
 import com.googlesource.gerrit.plugins.replication.PushResultProcessing.GitUpdateProcessing;
 import java.util.concurrent.Future;
diff --git a/src/main/java/com/googlesource/gerrit/plugins/replication/PushOne.java b/src/main/java/com/googlesource/gerrit/plugins/replication/PushOne.java
index 28b5e6b..80be8c9 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/replication/PushOne.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/replication/PushOne.java
@@ -28,6 +28,7 @@
 import com.google.gerrit.metrics.Timer1;
 import com.google.gerrit.reviewdb.client.Project;
 import com.google.gerrit.reviewdb.client.RefNames;
+import com.google.gerrit.server.CurrentUser;
 import com.google.gerrit.server.git.GitRepositoryManager;
 import com.google.gerrit.server.git.PerThreadRequestScope;
 import com.google.gerrit.server.git.ProjectRunnable;
@@ -36,10 +37,11 @@
 import com.google.gerrit.server.permissions.PermissionBackend;
 import com.google.gerrit.server.permissions.PermissionBackendException;
 import com.google.gerrit.server.permissions.ProjectPermission;
-import com.google.gerrit.server.project.NoSuchProjectException;
-import com.google.gerrit.server.project.ProjectControl;
+import com.google.gerrit.server.project.ProjectCache;
+import com.google.gerrit.server.project.ProjectState;
 import com.google.gerrit.server.util.IdGenerator;
 import com.google.inject.Inject;
+import com.google.inject.Provider;
 import com.google.inject.assistedinject.Assisted;
 import com.googlesource.gerrit.plugins.replication.ReplicationState.RefPushResult;
 import com.jcraft.jsch.JSchException;
@@ -112,6 +114,8 @@
   private final int id;
   private final long createdAt;
   private final ReplicationMetrics metrics;
+  private final ProjectCache projectCache;
+  private final Provider<CurrentUser> userProvider;
   private final AtomicBoolean canceledWhileRunning;
 
   @Inject
@@ -127,6 +131,8 @@
       IdGenerator ig,
       ReplicationStateListener sl,
       ReplicationMetrics m,
+      ProjectCache pc,
+      Provider<CurrentUser> up,
       @Assisted Project.NameKey d,
       @Assisted URIish u) {
     gitManager = grm;
@@ -145,6 +151,8 @@
     stateLog = sl;
     createdAt = System.nanoTime();
     metrics = m;
+    projectCache = pc;
+    userProvider = up;
     canceledWhileRunning = new AtomicBoolean(false);
     maxRetries = p.getMaxRetries();
   }
@@ -468,17 +476,15 @@
 
   private List<RemoteRefUpdate> generateUpdates(Transport tn)
       throws IOException, PermissionBackendException {
-    ProjectControl pc;
-    try {
-      pc = pool.controlFor(projectName);
-    } catch (NoSuchProjectException e) {
+    ProjectState projectState = projectCache.checkedGet(projectName);
+    if (projectState == null) {
       return Collections.emptyList();
     }
 
     Map<String, Ref> local = git.getAllRefs();
     boolean filter;
     try {
-      permissionBackend.user(pc.getUser()).project(projectName).check(ProjectPermission.READ);
+      permissionBackend.user(userProvider).project(projectName).check(ProjectPermission.READ);
       filter = false;
     } catch (AuthException e) {
       filter = true;
@@ -497,7 +503,7 @@
         }
         local = n;
       }
-      local = refFilterFactory.create(pc.getProjectState(), git).filter(local, true);
+      local = refFilterFactory.create(projectState, git).filter(local, true);
     }
 
     return pushAllRefs ? doPushAll(tn, local) : doPushDelta(local);
diff --git a/src/main/java/com/googlesource/gerrit/plugins/replication/PushResultProcessing.java b/src/main/java/com/googlesource/gerrit/plugins/replication/PushResultProcessing.java
index 654cd1f..d9efa95 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/replication/PushResultProcessing.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/replication/PushResultProcessing.java
@@ -14,7 +14,7 @@
 
 package com.googlesource.gerrit.plugins.replication;
 
-import com.google.gerrit.common.EventDispatcher;
+import com.google.gerrit.server.events.EventDispatcher;
 import com.google.gerrit.server.events.RefEvent;
 import com.google.gerrit.server.permissions.PermissionBackendException;
 import com.google.gwtorm.server.OrmException;
diff --git a/src/main/java/com/googlesource/gerrit/plugins/replication/ReplicationQueue.java b/src/main/java/com/googlesource/gerrit/plugins/replication/ReplicationQueue.java
index 226c6fb..1c5d346 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/replication/ReplicationQueue.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/replication/ReplicationQueue.java
@@ -15,7 +15,6 @@
 package com.googlesource.gerrit.plugins.replication;
 
 import com.google.common.base.Strings;
-import com.google.gerrit.common.EventDispatcher;
 import com.google.gerrit.extensions.events.GitReferenceUpdatedListener;
 import com.google.gerrit.extensions.events.HeadUpdatedListener;
 import com.google.gerrit.extensions.events.LifecycleListener;
@@ -23,6 +22,7 @@
 import com.google.gerrit.extensions.events.ProjectDeletedListener;
 import com.google.gerrit.extensions.registration.DynamicItem;
 import com.google.gerrit.reviewdb.client.Project;
+import com.google.gerrit.server.events.EventDispatcher;
 import com.google.gerrit.server.git.WorkQueue;
 import com.google.inject.Inject;
 import com.googlesource.gerrit.plugins.replication.PushResultProcessing.GitUpdateProcessing;
diff --git a/src/test/java/com/googlesource/gerrit/plugins/replication/GitUpdateProcessingTest.java b/src/test/java/com/googlesource/gerrit/plugins/replication/GitUpdateProcessingTest.java
index 337bd1d..5fa7b98 100644
--- a/src/test/java/com/googlesource/gerrit/plugins/replication/GitUpdateProcessingTest.java
+++ b/src/test/java/com/googlesource/gerrit/plugins/replication/GitUpdateProcessingTest.java
@@ -22,8 +22,8 @@
 import static org.easymock.EasyMock.reset;
 import static org.easymock.EasyMock.verify;
 
-import com.google.gerrit.common.EventDispatcher;
 import com.google.gerrit.reviewdb.server.ReviewDb;
+import com.google.gerrit.server.events.EventDispatcher;
 import com.google.gerrit.server.permissions.PermissionBackendException;
 import com.google.gwtorm.client.KeyUtil;
 import com.google.gwtorm.server.OrmException;