1 files changed, 57 insertions, 0 deletions
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/project/PerRequestProjectControlCache.java b/gerrit-server/src/main/java/com/google/gerrit/server/project/PerRequestProjectControlCache.java
new file mode 100644
index 0000000000..19a42aee77
--- /dev/null
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/project/PerRequestProjectControlCache.java
@@ -0,0 +1,57 @@
+// Copyright (C) 2011 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package com.google.gerrit.server.project;
+
+import com.google.gerrit.reviewdb.client.Project;
+import com.google.gerrit.server.CurrentUser;
+import com.google.inject.Inject;
+import com.google.inject.servlet.RequestScoped;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/** Caches {@link ProjectControl} objects for the current user of the request. */
+@RequestScoped
+public class PerRequestProjectControlCache {
+  private final ProjectCache projectCache;
+  private final CurrentUser user;
+  private final Map<Project.NameKey, ProjectControl> controls;
+
+  @Inject
+  PerRequestProjectControlCache(ProjectCache projectCache,
+      CurrentUser userProvider) {
+    this.projectCache = projectCache;
+    this.user = userProvider;
+    this.controls = new HashMap<Project.NameKey, ProjectControl>();
+  }
+
+  ProjectControl get(Project.NameKey nameKey) throws NoSuchProjectException {
+    ProjectControl ctl = controls.get(nameKey);
+    if (ctl == null) {
+      ProjectState p = projectCache.get(nameKey);
+      if (p == null) {
+        throw new NoSuchProjectException(nameKey);
+      }
+      ctl = p.controlFor(user);
+      controls.put(nameKey, ctl);
+    }
+    return ctl;
+  }
+
+  public void evict(Project project) {
+    projectCache.evict(project);
+    controls.remove(project.getNameKey());
+  }
+}