1 files changed, 61 insertions, 0 deletions
diff --git a/gerrit-war/src/main/java/com/google/gerrit/httpd/SitePathFromSystemConfigProvider.java b/gerrit-war/src/main/java/com/google/gerrit/httpd/SitePathFromSystemConfigProvider.java
new file mode 100644
index 0000000000..b97df3f0b8
--- /dev/null
+++ b/gerrit-war/src/main/java/com/google/gerrit/httpd/SitePathFromSystemConfigProvider.java
@@ -0,0 +1,61 @@
+// Copyright (C) 2009 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.httpd;
+
+import com.google.gerrit.reviewdb.client.SystemConfig;
+import com.google.gerrit.reviewdb.server.ReviewDb;
+import com.google.gerrit.server.config.SitePath;
+import com.google.gwtorm.server.OrmException;
+import com.google.gwtorm.server.SchemaFactory;
+import com.google.inject.Inject;
+import com.google.inject.Provider;
+
+import java.io.File;
+import java.util.List;
+
+/** Provides {@link java.io.File} annotated with {@link SitePath}. */
+class SitePathFromSystemConfigProvider implements Provider<File> {
+  private final File path;
+
+  @Inject
+  SitePathFromSystemConfigProvider(SchemaFactory<ReviewDb> schemaFactory)
+      throws OrmException {
+    path = read(schemaFactory);
+  }
+
+  @Override
+  public File get() {
+    return path;
+  }
+
+  private static File read(SchemaFactory<ReviewDb> schemaFactory)
+      throws OrmException {
+    ReviewDb db = schemaFactory.open();
+    try {
+      List<SystemConfig> all = db.systemConfig().all().toList();
+      switch (all.size()) {
+        case 1:
+          return new File(all.get(0).sitePath);
+        case 0:
+          throw new OrmException("system_config table is empty");
+        default:
+          throw new OrmException("system_config must have exactly 1 row;"
+              + " found " + all.size() + " rows instead");
+      }
+    } finally {
+      db.close();
+    }
+  }
+}