Index groups with in-memory test

Move the indexing of the initial groups when the
Gerrit server gets prepared and started.

Change-Id: Ida137c500426d6d5b32a938fcdfee947040f4a80

java/com/google/gerrit/acceptance/ReindexGroupsAtStartup.java

@@ -0,0 +1,79 @@
+// Copyright (C) 2019 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.acceptance;
+
+import com.google.gerrit.common.data.GroupReference;
+import com.google.gerrit.extensions.events.LifecycleListener;
+import com.google.gerrit.lifecycle.LifecycleModule;
+import com.google.gerrit.server.config.GerritServerConfig;
+import com.google.gerrit.server.group.db.Groups;
+import com.google.gerrit.server.index.group.GroupIndexer;
+import com.google.inject.Inject;
+import com.google.inject.Scopes;
+import java.io.IOException;
+import java.util.stream.Stream;
+import org.eclipse.jgit.errors.ConfigInvalidException;
+import org.eclipse.jgit.lib.Config;
+
+/** Reindex all groups at Gerrit daemon startup. */
+public class ReindexGroupsAtStartup implements LifecycleListener {
+  private final GroupIndexer groupIndexer;
+  private final Groups groups;
+  private final Config cfg;
+
+  public static class Module extends LifecycleModule {
+    @Override
+    protected void configure() {
+      listener().to(ReindexGroupsAtStartup.class).in(Scopes.SINGLETON);
+    }
+  }
+
+  @Inject
+  public ReindexGroupsAtStartup(
+      GroupIndexer groupIndexer, Groups groups, @GerritServerConfig Config cfg) {
+    this.groupIndexer = groupIndexer;
+    this.groups = groups;
+    this.cfg = cfg;
+  }
+
+  @Override
+  public void start() {
+    // Gerrit slaves without a reindex
+    if (cfg.getBoolean("container", "slave", false)
+        && !cfg.getBoolean("index", "scheduledIndexer", "runOnStartup", true)) {
+      return;
+    }
+
+    Stream<GroupReference> allGroupReferences;
+    try {
+      allGroupReferences = groups.getAllGroupReferences();
+    } catch (ConfigInvalidException | IOException e) {
+      throw new IllegalStateException("Unable to reindex groups, tests may fail", e);
+    }
+
+    allGroupReferences.forEach(
+        group -> {
+          try {
+            groupIndexer.index(group.getUUID());
+          } catch (IOException e) {
+            throw new IllegalStateException(
+                String.format("Unable to index %s, tests may fail", group), e);
+          }
+        });
+  }
+
+  @Override
+  public void stop() {}
+}