Merge "Add 'created on' field to groups"
diff --git a/gerrit-reviewdb/src/main/java/com/google/gerrit/reviewdb/client/AccountGroup.java b/gerrit-reviewdb/src/main/java/com/google/gerrit/reviewdb/client/AccountGroup.java
index c3b2908..66b1848 100644
--- a/gerrit-reviewdb/src/main/java/com/google/gerrit/reviewdb/client/AccountGroup.java
+++ b/gerrit-reviewdb/src/main/java/com/google/gerrit/reviewdb/client/AccountGroup.java
@@ -17,6 +17,7 @@
 import com.google.gwtorm.client.Column;
 import com.google.gwtorm.client.IntKey;
 import com.google.gwtorm.client.StringKey;
+import java.sql.Timestamp;
 
 /** Named group of one or more accounts, typically used for access controls. */
 public final class AccountGroup {
@@ -145,17 +146,22 @@
   @Column(id = 10)
   protected UUID ownerGroupUUID;
 
+  @Column(id = 11)
+  protected Timestamp createdOn;
+
   protected AccountGroup() {}
 
   public AccountGroup(
-      final AccountGroup.NameKey newName,
-      final AccountGroup.Id newId,
-      final AccountGroup.UUID uuid) {
+      AccountGroup.NameKey newName,
+      AccountGroup.Id newId,
+      AccountGroup.UUID uuid,
+      Timestamp createdOn) {
     name = newName;
     groupId = newId;
     visibleToAll = false;
     groupUUID = uuid;
     ownerGroupUUID = groupUUID;
+    this.createdOn = createdOn;
   }
 
   public AccountGroup.Id getId() {
@@ -205,4 +211,12 @@
   public void setGroupUUID(AccountGroup.UUID uuid) {
     groupUUID = uuid;
   }
+
+  public Timestamp getCreatedOn() {
+    return createdOn;
+  }
+
+  public void setCreatedOn(Timestamp createdOn) {
+    this.createdOn = createdOn;
+  }
 }
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/account/GroupCacheImpl.java b/gerrit-server/src/main/java/com/google/gerrit/server/account/GroupCacheImpl.java
index 5c8e3e9..b14491f 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/account/GroupCacheImpl.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/account/GroupCacheImpl.java
@@ -17,6 +17,7 @@
 import com.google.common.cache.CacheLoader;
 import com.google.common.cache.LoadingCache;
 import com.google.common.collect.ImmutableList;
+import com.google.gerrit.common.TimeUtil;
 import com.google.gerrit.reviewdb.client.AccountGroup;
 import com.google.gerrit.reviewdb.client.AccountGroupName;
 import com.google.gerrit.reviewdb.server.ReviewDb;
@@ -167,7 +168,7 @@
 
   private static AccountGroup missing(AccountGroup.Id key) {
     AccountGroup.NameKey name = new AccountGroup.NameKey("Deleted Group" + key);
-    return new AccountGroup(name, key, null);
+    return new AccountGroup(name, key, null, TimeUtil.nowTs());
   }
 
   static class ByIdLoader extends CacheLoader<AccountGroup.Id, Optional<AccountGroup>> {
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/group/CreateGroup.java b/gerrit-server/src/main/java/com/google/gerrit/server/group/CreateGroup.java
index 4d78a7d..d692e59 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/group/CreateGroup.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/group/CreateGroup.java
@@ -16,6 +16,7 @@
 
 import com.google.common.base.MoreObjects;
 import com.google.common.base.Strings;
+import com.google.gerrit.common.TimeUtil;
 import com.google.gerrit.common.data.GlobalCapability;
 import com.google.gerrit.common.data.GroupDescription;
 import com.google.gerrit.common.data.GroupDescriptions;
@@ -188,7 +189,8 @@
         GroupUUID.make(
             createGroupArgs.getGroupName(),
             self.get().newCommitterIdent(serverIdent.getWhen(), serverIdent.getTimeZone()));
-    AccountGroup group = new AccountGroup(createGroupArgs.getGroup(), groupId, uuid);
+    AccountGroup group =
+        new AccountGroup(createGroupArgs.getGroup(), groupId, uuid, TimeUtil.nowTs());
     group.setVisibleToAll(createGroupArgs.visibleToAll);
     if (createGroupArgs.ownerGroupId != null) {
       AccountGroup ownerGroup = groupCache.get(createGroupArgs.ownerGroupId);
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/index/group/GroupField.java b/gerrit-server/src/main/java/com/google/gerrit/server/index/group/GroupField.java
index 5e72327..70bdb3f 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/index/group/GroupField.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/index/group/GroupField.java
@@ -18,10 +18,12 @@
 import static com.google.gerrit.server.index.FieldDef.fullText;
 import static com.google.gerrit.server.index.FieldDef.integer;
 import static com.google.gerrit.server.index.FieldDef.prefix;
+import static com.google.gerrit.server.index.FieldDef.timestamp;
 
 import com.google.gerrit.reviewdb.client.AccountGroup;
 import com.google.gerrit.server.index.FieldDef;
 import com.google.gerrit.server.index.SchemaUtil;
+import java.sql.Timestamp;
 
 /** Secondary index schemas for groups. */
 public class GroupField {
@@ -37,6 +39,10 @@
   public static final FieldDef<AccountGroup, String> OWNER_UUID =
       exact("owner_uuid").build(g -> g.getOwnerGroupUUID().get());
 
+  /** Timestamp indicating when this group was created. */
+  public static final FieldDef<AccountGroup, Timestamp> CREATED_ON =
+      timestamp("created_on").build(AccountGroup::getCreatedOn);
+
   /** Group name. */
   public static final FieldDef<AccountGroup, String> NAME =
       exact("name").build(AccountGroup::getName);
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/index/group/GroupSchemaDefinitions.java b/gerrit-server/src/main/java/com/google/gerrit/server/index/group/GroupSchemaDefinitions.java
index 6ba46cb..b055539 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/index/group/GroupSchemaDefinitions.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/index/group/GroupSchemaDefinitions.java
@@ -32,7 +32,9 @@
           GroupField.DESCRIPTION,
           GroupField.IS_VISIBLE_TO_ALL);
 
-  static final Schema<AccountGroup> V2 = schema(V1);
+  @Deprecated static final Schema<AccountGroup> V2 = schema(V1);
+
+  static final Schema<AccountGroup> V3 = schema(V2, GroupField.CREATED_ON);
 
   public static final GroupSchemaDefinitions INSTANCE = new GroupSchemaDefinitions();
 
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/schema/SchemaCreator.java b/gerrit-server/src/main/java/com/google/gerrit/server/schema/SchemaCreator.java
index 62d0f42..26ff0d4 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/schema/SchemaCreator.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/schema/SchemaCreator.java
@@ -14,6 +14,7 @@
 
 package com.google.gerrit.server.schema;
 
+import com.google.gerrit.common.TimeUtil;
 import com.google.gerrit.common.data.GroupReference;
 import com.google.gerrit.reviewdb.client.AccountGroup;
 import com.google.gerrit.reviewdb.client.AccountGroupName;
@@ -124,7 +125,8 @@
     return new AccountGroup( //
         new AccountGroup.NameKey(name), //
         new AccountGroup.Id(c.nextAccountGroupId()), //
-        uuid);
+        uuid,
+        TimeUtil.nowTs());
   }
 
   private SystemConfig initSystemConfig(ReviewDb db) throws OrmException {
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/schema/SchemaVersion.java b/gerrit-server/src/main/java/com/google/gerrit/server/schema/SchemaVersion.java
index 76decec..b68c81a 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/schema/SchemaVersion.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/schema/SchemaVersion.java
@@ -35,7 +35,7 @@
 /** A version of the database schema. */
 public abstract class SchemaVersion {
   /** The current schema version. */
-  public static final Class<Schema_150> C = Schema_150.class;
+  public static final Class<Schema_151> C = Schema_151.class;
 
   public static int getBinaryVersion() {
     return guessVersion(C);
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/schema/Schema_151.java b/gerrit-server/src/main/java/com/google/gerrit/server/schema/Schema_151.java
new file mode 100644
index 0000000..48545f0
--- /dev/null
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/schema/Schema_151.java
@@ -0,0 +1,65 @@
+// Copyright (C) 2017 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.schema;
+
+import com.google.common.annotations.VisibleForTesting;
+import com.google.common.collect.Streams;
+import com.google.gerrit.reviewdb.client.AccountGroup;
+import com.google.gerrit.reviewdb.client.AccountGroupMemberAudit;
+import com.google.gerrit.reviewdb.client.AccountGroupMemberAudit.Key;
+import com.google.gerrit.reviewdb.server.ReviewDb;
+import com.google.gwtorm.server.OrmException;
+import com.google.gwtorm.server.ResultSet;
+import com.google.inject.Inject;
+import com.google.inject.Provider;
+import java.sql.Timestamp;
+import java.time.Instant;
+import java.time.LocalDateTime;
+import java.time.Month;
+import java.time.ZoneOffset;
+import java.util.Comparator;
+import java.util.List;
+import java.util.Optional;
+
+/** A schema which adds the 'created on' field to groups. */
+public class Schema_151 extends SchemaVersion {
+  @VisibleForTesting
+  static final Instant AUDIT_CREATION_INSTANT =
+      LocalDateTime.of(2009, Month.JUNE, 8, 19, 31).toInstant(ZoneOffset.UTC);
+
+  @Inject
+  protected Schema_151(Provider<Schema_150> prior) {
+    super(prior);
+  }
+
+  @Override
+  protected void migrateData(ReviewDb db, UpdateUI ui) throws OrmException {
+    List<AccountGroup> accountGroups = db.accountGroups().all().toList();
+    for (AccountGroup accountGroup : accountGroups) {
+      ResultSet<AccountGroupMemberAudit> groupMemberAudits =
+          db.accountGroupMembersAudit().byGroup(accountGroup.getId());
+      Optional<Timestamp> firstTimeMentioned =
+          Streams.stream(groupMemberAudits)
+              .map(AccountGroupMemberAudit::getKey)
+              .map(Key::getAddedOn)
+              .min(Comparator.naturalOrder());
+      Timestamp createdOn =
+          firstTimeMentioned.orElseGet(() -> Timestamp.from(AUDIT_CREATION_INSTANT));
+
+      accountGroup.setCreatedOn(createdOn);
+    }
+    db.accountGroups().update(accountGroups);
+  }
+}
diff --git a/gerrit-server/src/test/java/com/google/gerrit/server/schema/Schema_150_to_151_Test.java b/gerrit-server/src/test/java/com/google/gerrit/server/schema/Schema_150_to_151_Test.java
new file mode 100644
index 0000000..aea7857
--- /dev/null
+++ b/gerrit-server/src/test/java/com/google/gerrit/server/schema/Schema_150_to_151_Test.java
@@ -0,0 +1,177 @@
+// Copyright (C) 2017 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.schema;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import com.google.common.collect.ImmutableList;
+import com.google.gerrit.common.TimeUtil;
+import com.google.gerrit.extensions.api.groups.GroupInput;
+import com.google.gerrit.extensions.common.GroupInfo;
+import com.google.gerrit.extensions.restapi.TopLevelResource;
+import com.google.gerrit.lifecycle.LifecycleManager;
+import com.google.gerrit.reviewdb.client.Account;
+import com.google.gerrit.reviewdb.client.AccountGroup;
+import com.google.gerrit.reviewdb.client.AccountGroup.Id;
+import com.google.gerrit.reviewdb.client.AccountGroupMemberAudit;
+import com.google.gerrit.reviewdb.server.ReviewDb;
+import com.google.gerrit.server.CurrentUser;
+import com.google.gerrit.server.IdentifiedUser;
+import com.google.gerrit.server.account.AccountManager;
+import com.google.gerrit.server.account.AuthRequest;
+import com.google.gerrit.server.group.CreateGroup;
+import com.google.gerrit.server.util.RequestContext;
+import com.google.gerrit.server.util.ThreadLocalRequestContext;
+import com.google.gerrit.testutil.InMemoryDatabase;
+import com.google.gerrit.testutil.InMemoryModule;
+import com.google.gwtorm.server.OrmException;
+import com.google.gwtorm.server.ResultSet;
+import com.google.gwtorm.server.SchemaFactory;
+import com.google.gwtorm.server.StatementExecutor;
+import com.google.inject.Guice;
+import com.google.inject.Inject;
+import com.google.inject.Injector;
+import com.google.inject.Provider;
+import com.google.inject.util.Providers;
+import java.sql.Timestamp;
+import java.time.Instant;
+import java.time.LocalDateTime;
+import java.time.Month;
+import java.time.ZoneOffset;
+import java.util.List;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+public class Schema_150_to_151_Test {
+  @Inject private AccountManager accountManager;
+  @Inject private IdentifiedUser.GenericFactory userFactory;
+  @Inject private SchemaFactory<ReviewDb> schemaFactory;
+  @Inject private SchemaCreator schemaCreator;
+  @Inject private ThreadLocalRequestContext requestContext;
+  @Inject private Schema_151 schema151;
+  @Inject private CreateGroup.Factory createGroupFactory;
+
+  // Only for use in setting up/tearing down injector.
+  @Inject private InMemoryDatabase inMemoryDatabase;
+
+  private LifecycleManager lifecycle;
+  private ReviewDb db;
+
+  @Before
+  public void setUp() throws Exception {
+    Injector injector = Guice.createInjector(new InMemoryModule());
+    injector.injectMembers(this);
+    lifecycle = new LifecycleManager();
+    lifecycle.add(injector);
+    lifecycle.start();
+
+    try (ReviewDb underlyingDb = inMemoryDatabase.getDatabase().open()) {
+      schemaCreator.create(underlyingDb);
+    }
+    db = schemaFactory.open();
+    Account.Id userId = accountManager.authenticate(AuthRequest.forUser("user")).getAccountId();
+    IdentifiedUser user = userFactory.create(userId);
+
+    requestContext.setContext(
+        new RequestContext() {
+          @Override
+          public CurrentUser getUser() {
+            return user;
+          }
+
+          @Override
+          public Provider<ReviewDb> getReviewDbProvider() {
+            return Providers.of(db);
+          }
+        });
+  }
+
+  @After
+  public void tearDown() {
+    if (lifecycle != null) {
+      lifecycle.stop();
+    }
+    requestContext.setContext(null);
+    if (db != null) {
+      db.close();
+    }
+    InMemoryDatabase.drop(inMemoryDatabase);
+  }
+
+  @Test
+  public void createdOnIsPopulatedForGroupsCreatedAfterAudit() throws Exception {
+    Timestamp testStartTime = TimeUtil.nowTs();
+    AccountGroup.Id groupId = createGroup("Group for schema migration");
+    setCreatedOnToVeryOldTimestamp(groupId);
+
+    schema151.migrateData(db, new TestUpdateUI());
+
+    AccountGroup group = db.accountGroups().get(groupId);
+    assertThat(group.getCreatedOn()).isAtLeast(testStartTime);
+  }
+
+  @Test
+  public void createdOnIsPopulatedForGroupsCreatedBeforeAudit() throws Exception {
+    AccountGroup.Id groupId = createGroup("Ancient group for schema migration");
+    setCreatedOnToVeryOldTimestamp(groupId);
+    removeAuditEntriesFor(groupId);
+
+    schema151.migrateData(db, new TestUpdateUI());
+
+    AccountGroup group = db.accountGroups().get(groupId);
+    assertThat(group.getCreatedOn()).isEqualTo(Timestamp.from(Schema_151.AUDIT_CREATION_INSTANT));
+  }
+
+  private AccountGroup.Id createGroup(String name) throws Exception {
+    GroupInput groupInput = new GroupInput();
+    groupInput.name = name;
+    GroupInfo groupInfo =
+        createGroupFactory.create(name).apply(TopLevelResource.INSTANCE, groupInput);
+    return new Id(groupInfo.groupId);
+  }
+
+  private void setCreatedOnToVeryOldTimestamp(Id groupId) throws OrmException {
+    AccountGroup group = db.accountGroups().get(groupId);
+    Instant instant = LocalDateTime.of(1800, Month.JANUARY, 1, 0, 0).toInstant(ZoneOffset.UTC);
+    group.setCreatedOn(Timestamp.from(instant));
+    db.accountGroups().update(ImmutableList.of(group));
+  }
+
+  private void removeAuditEntriesFor(AccountGroup.Id groupId) throws Exception {
+    ResultSet<AccountGroupMemberAudit> groupMemberAudits =
+        db.accountGroupMembersAudit().byGroup(groupId);
+    db.accountGroupMembersAudit().delete(groupMemberAudits);
+  }
+
+  private static class TestUpdateUI implements UpdateUI {
+
+    @Override
+    public void message(String msg) {}
+
+    @Override
+    public boolean yesno(boolean def, String msg) {
+      return false;
+    }
+
+    @Override
+    public boolean isBatch() {
+      return false;
+    }
+
+    @Override
+    public void pruneSchema(StatementExecutor e, List<String> pruneList) throws OrmException {}
+  }
+}