Add REST endpoint to reindex a single account

This may become handy to fix single accounts that are stale in the
index.

Change-Id: If4c1787a26a564c19d1c4c1896afa89120ef4813
Signed-off-by: Edwin Kempin <ekempin@google.com>

gerrit-server/src/main/java/com/google/gerrit/server/account/Index.java

@@ -0,0 +1,56 @@
+//Copyright (C) 2016 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.account;
+
+import com.google.gerrit.extensions.restapi.AuthException;
+import com.google.gerrit.extensions.restapi.Response;
+import com.google.gerrit.extensions.restapi.RestModifyView;
+import com.google.gerrit.server.CurrentUser;
+import com.google.gerrit.server.account.Index.Input;
+import com.google.gwtorm.server.OrmException;
+import com.google.inject.Inject;
+import com.google.inject.Provider;
+import com.google.inject.Singleton;
+
+import java.io.IOException;
+
+@Singleton
+public class Index implements RestModifyView<AccountResource, Input> {
+  public static class Input {
+  }
+
+  private final AccountCache accountCache;
+  private final Provider<CurrentUser> self;
+
+  @Inject
+  Index(AccountCache accountCache,
+      Provider<CurrentUser> self) {
+    this.accountCache = accountCache;
+    this.self = self;
+  }
+
+  @Override
+  public Response<?> apply(AccountResource rsrc, Input input)
+      throws IOException, AuthException, OrmException {
+    if (self.get() != rsrc.getUser()
+        && !self.get().getCapabilities().canModifyAccount()) {
+      throw new AuthException("not allowed to index account");
+    }
+
+    // evicting the account from the cache, reindexes the account
+    accountCache.evict(rsrc.getUser().getAccountId());
+    return Response.none();
+  }
+}

gerrit-server/src/main/java/com/google/gerrit/server/account/Module.java

@@ -40,6 +40,7 @@ public class Module extends RestApiModule {
     put(ACCOUNT_KIND).to(PutAccount.class);
     get(ACCOUNT_KIND).to(GetAccount.class);
     get(ACCOUNT_KIND, "detail").to(GetDetail.class);
+    post(ACCOUNT_KIND, "index").to(Index.class);
     get(ACCOUNT_KIND, "name").to(GetName.class);
     put(ACCOUNT_KIND, "name").to(PutName.class);
     delete(ACCOUNT_KIND, "name").to(PutName.class);

gerrit-server/src/main/java/com/google/gerrit/server/api/accounts/AccountApiImpl.java

@@ -47,6 +47,7 @@ import com.google.gerrit.server.account.GetEditPreferences;
 import com.google.gerrit.server.account.GetPreferences;
 import com.google.gerrit.server.account.GetSshKeys;
 import com.google.gerrit.server.account.GetWatchedProjects;
+import com.google.gerrit.server.account.Index;
 import com.google.gerrit.server.account.PostWatchedProjects;
 import com.google.gerrit.server.account.PutAgreement;
 import com.google.gerrit.server.account.SetDiffPreferences;
@@ -99,6 +100,7 @@ public class AccountApiImpl implements AccountApi {
   private final SshKeys sshKeys;
   private final GetAgreements getAgreements;
   private final PutAgreement putAgreement;
+  private final Index index;
 
   @Inject
   AccountApiImpl(AccountLoader.Factory ailf,
@@ -126,6 +128,7 @@ public class AccountApiImpl implements AccountApi {
       SshKeys sshKeys,
       GetAgreements getAgreements,
       PutAgreement putAgreement,
+      Index index,
       @Assisted AccountResource account) {
     this.account = account;
     this.accountLoaderFactory = ailf;
@@ -153,6 +156,7 @@ public class AccountApiImpl implements AccountApi {
     this.gpgApiAdapter = gpgApiAdapter;
     this.getAgreements = getAgreements;
     this.putAgreement = putAgreement;
+    this.index = index;
   }
 
   @Override
@@ -401,4 +405,12 @@ public class AccountApiImpl implements AccountApi {
     }
   }
 
+  @Override
+  public void index() throws RestApiException {
+    try {
+      index.apply(account, new Index.Input());
+    } catch (IOException | OrmException e) {
+      throw new RestApiException("Cannot index account", e);
+    }
+  }
 }