1 files changed, 94 insertions, 0 deletions
diff --git a/java/com/google/gerrit/server/plugins/ServerPluginInfoModule.java b/java/com/google/gerrit/server/plugins/ServerPluginInfoModule.java
new file mode 100644
index 0000000000..639b2787f3
--- /dev/null
+++ b/java/com/google/gerrit/server/plugins/ServerPluginInfoModule.java
@@ -0,0 +1,94 @@
+// Copyright (C) 2015 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.plugins;
+
+import com.google.common.base.MoreObjects;
+import com.google.gerrit.extensions.annotations.PluginCanonicalWebUrl;
+import com.google.gerrit.extensions.annotations.PluginData;
+import com.google.gerrit.extensions.annotations.PluginName;
+import com.google.gerrit.lifecycle.LifecycleModule;
+import com.google.gerrit.metrics.MetricMaker;
+import com.google.gerrit.server.PluginUser;
+import com.google.inject.AbstractModule;
+import com.google.inject.Provides;
+import com.google.inject.ProvisionException;
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+
+class ServerPluginInfoModule extends AbstractModule {
+  private final ServerPlugin plugin;
+  private final Path dataDir;
+
+  private volatile boolean ready;
+  private final MetricMaker serverMetrics;
+
+  ServerPluginInfoModule(ServerPlugin plugin, MetricMaker serverMetrics) {
+    this.plugin = plugin;
+    this.dataDir = plugin.getDataDir();
+    this.serverMetrics = serverMetrics;
+  }
+
+  @Override
+  protected void configure() {
+    bind(PluginUser.class).toInstance(plugin.getPluginUser());
+    bind(String.class).annotatedWith(PluginName.class).toInstance(plugin.getName());
+    bind(String.class)
+        .annotatedWith(PluginCanonicalWebUrl.class)
+        .toInstance(plugin.getPluginCanonicalWebUrl());
+
+    install(
+        new LifecycleModule() {
+          @Override
+          public void configure() {
+            PluginMetricMaker metrics =
+                new PluginMetricMaker(
+                    serverMetrics,
+                    MoreObjects.firstNonNull(
+                        plugin.getMetricsPrefix(), String.format("plugins/%s/", plugin.getName())));
+            bind(MetricMaker.class).toInstance(metrics);
+            listener().toInstance(metrics);
+          }
+        });
+  }
+
+  @Provides
+  @PluginData
+  Path getPluginData() {
+    if (!ready) {
+      synchronized (dataDir) {
+        if (!ready) {
+          try {
+            Files.createDirectories(dataDir);
+          } catch (IOException e) {
+            throw new ProvisionException(
+                String.format(
+                    "Cannot create %s for plugin %s", dataDir.toAbsolutePath(), plugin.getName()),
+                e);
+          }
+          ready = true;
+        }
+      }
+    }
+    return dataDir;
+  }
+
+  @Provides
+  @PluginData
+  File getPluginDataAsFile(@PluginData Path pluginData) {
+    return pluginData.toFile();
+  }
+}