Merge changes from topic "notedb-config"

* changes:
  Read NoteDb config first from notedb.config
  OnlineNoteDbMigrationIT: Use local disk
  MergeableFileBasedConfig: Add subsection values recursively

Documentation/note-db.txt

@@ -137,14 +137,23 @@ There are several use cases for trial mode:
 To continue with the full migration after running the trial migration, use
 either the online or offline migration steps as normal. To revert to
 ReviewDb-only, remove `noteDb.changes.read` and `noteDb.changes.write` from
-`gerrit.config` and restart Gerrit.
+`notedb.config` and restart Gerrit.
 
 == Configuration
 
-The migration process works by setting a configuration option in `gerrit.config`
+The migration process works by setting a configuration option in `notedb.config`
 for each step in the process, then performing the corresponding data migration.
-In general, users should not set these options manually; this section serves
+
-primarily as a reference.
+Config options are read from `notedb.config` first, falling back to
+`gerrit.config`. If editing config manually, you may edit either file, but the
+migration process itself only touches `notedb.config`. This means if your
+`gerrit.config` is managed with Puppet or a similar tool, it can overwrite
+`gerrit.config` without affecting the migration process. You should not manage
+`notedb.config` with Puppet, but you may copy values back into `gerrit.config`
+and delete `notedb.config` at some later point after completing the migration.
+
+In general, users should not set the options described below manually; this
+section serves primarily as a reference.
 
 - `noteDb.changes.write=true`: During a ReviewDb write, the state of the change
   in NoteDb is written to the `note_db_state` field in the `Change` entity.

gerrit-acceptance-framework/BUILD

@@ -1,6 +1,12 @@
 load("//tools/bzl:java.bzl", "java_library2")
+load("//tools/bzl:junit.bzl", "junit_tests")
 
-SRCS = glob(["src/test/java/com/google/gerrit/acceptance/*.java"])
+TEST_SRCS = ["src/test/java/com/google/gerrit/acceptance/MergeableFileBasedConfigTest.java"]
+
+SRCS = glob(
+    ["src/test/java/com/google/gerrit/acceptance/*.java"],
+    exclude = TEST_SRCS,
+)
 
 PROVIDED = [
     "//gerrit-common:annotations",
@@ -77,3 +83,14 @@ java_doc(
     title = "Gerrit Acceptance Test Framework Documentation",
     visibility = ["//visibility:public"],
 )
+
+junit_tests(
+    name = "acceptance_framework_tests",
+    srcs = TEST_SRCS,
+    deps = [
+        ":lib",
+        "//lib:guava",
+        "//lib:truth",
+        "//lib/jgit/org.eclipse.jgit:jgit",
+    ],
+)

gerrit-acceptance-framework/src/test/java/com/google/gerrit/acceptance/MergeableFileBasedConfig.java

@@ -40,7 +40,7 @@ public class MergeableFileBasedConfig extends FileBasedConfig {
     }
     for (String section : s.getSections()) {
       for (String subsection : s.getSubsections(section)) {
-        for (String name : s.getNames(section, subsection)) {
+        for (String name : s.getNames(section, subsection, true)) {
           setStringList(
               section,
               subsection,

gerrit-acceptance-framework/src/test/java/com/google/gerrit/acceptance/MergeableFileBasedConfigTest.java

@@ -0,0 +1,118 @@
+// 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.acceptance;
+
+import static com.google.common.truth.Truth.assertThat;
+import static java.nio.charset.StandardCharsets.UTF_8;
+
+import com.google.common.collect.ImmutableList;
+import java.io.File;
+import java.nio.file.Files;
+import org.eclipse.jgit.lib.Config;
+import org.eclipse.jgit.util.FS;
+import org.junit.Test;
+
+public class MergeableFileBasedConfigTest {
+  @Test
+  public void mergeNull() throws Exception {
+    MergeableFileBasedConfig cfg = newConfig();
+    cfg.setString("foo", null, "bar", "value");
+    String expected = "[foo]\n\tbar = value\n";
+    assertConfig(cfg, expected);
+    cfg.merge(null);
+    assertConfig(cfg, expected);
+  }
+
+  @Test
+  public void mergeFlatConfig() throws Exception {
+    MergeableFileBasedConfig cfg = newConfig();
+    cfg.setString("foo", null, "bar1", "value1");
+    cfg.setString("foo", null, "bar2", "value2");
+    cfg.setString("foo", "sub", "bar1", "value1");
+    cfg.setString("foo", "sub", "bar2", "value2");
+
+    assertConfig(
+        cfg,
+        "[foo]\n"
+            + "\tbar1 = value1\n"
+            + "\tbar2 = value2\n"
+            + "[foo \"sub\"]\n"
+            + "\tbar1 = value1\n"
+            + "\tbar2 = value2\n");
+
+    Config toMerge = new Config();
+    toMerge.setStringList("foo", null, "bar2", ImmutableList.of("merge1", "merge2"));
+    toMerge.setStringList("foo", "sub", "bar2", ImmutableList.of("merge1", "merge2"));
+    cfg.merge(toMerge);
+
+    assertConfig(
+        cfg,
+        "[foo]\n"
+            + "\tbar1 = value1\n"
+            + "\tbar2 = merge1\n"
+            + "\tbar2 = merge2\n"
+            + "[foo \"sub\"]\n"
+            + "\tbar1 = value1\n"
+            + "\tbar2 = merge1\n"
+            + "\tbar2 = merge2\n");
+  }
+
+  @Test
+  public void mergeStackedConfig() throws Exception {
+    MergeableFileBasedConfig cfg = newConfig();
+    cfg.setString("foo", null, "bar1", "value1");
+    cfg.setString("foo", null, "bar2", "value2");
+    cfg.setString("foo", "sub", "bar1", "value1");
+    cfg.setString("foo", "sub", "bar2", "value2");
+
+    assertConfig(
+        cfg,
+        "[foo]\n"
+            + "\tbar1 = value1\n"
+            + "\tbar2 = value2\n"
+            + "[foo \"sub\"]\n"
+            + "\tbar1 = value1\n"
+            + "\tbar2 = value2\n");
+
+    Config base = new Config();
+    Config toMerge = new Config(base);
+    base.setStringList("foo", null, "bar2", ImmutableList.of("merge1", "merge2"));
+    base.setStringList("foo", "sub", "bar2", ImmutableList.of("merge1", "merge2"));
+    cfg.merge(toMerge);
+
+    assertConfig(
+        cfg,
+        "[foo]\n"
+            + "\tbar1 = value1\n"
+            + "\tbar2 = merge1\n"
+            + "\tbar2 = merge2\n"
+            + "[foo \"sub\"]\n"
+            + "\tbar1 = value1\n"
+            + "\tbar2 = merge1\n"
+            + "\tbar2 = merge2\n");
+  }
+
+  private MergeableFileBasedConfig newConfig() throws Exception {
+    File f = File.createTempFile(getClass().getSimpleName(), ".config");
+    f.deleteOnExit();
+    return new MergeableFileBasedConfig(f, FS.detect());
+  }
+
+  private void assertConfig(MergeableFileBasedConfig cfg, String expected) throws Exception {
+    assertThat(cfg.toText()).isEqualTo(expected);
+    cfg.save();
+    assertThat(new String(Files.readAllBytes(cfg.getFile().toPath()), UTF_8)).isEqualTo(expected);
+  }
+}

gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/pgm/StandaloneNoteDbMigrationIT.java

@@ -61,6 +61,7 @@ import org.junit.Test;
 @NoHttpd
 public class StandaloneNoteDbMigrationIT extends StandaloneSiteTest {
   private StoredConfig gerritConfig;
+  private StoredConfig noteDbConfig;
 
   private Project.NameKey project;
   private Change.Id changeId;
@@ -69,10 +70,14 @@ public class StandaloneNoteDbMigrationIT extends StandaloneSiteTest {
   public void setUp() throws Exception {
     assume().that(NoteDbMode.get()).isEqualTo(NoteDbMode.OFF);
     gerritConfig = new FileBasedConfig(sitePaths.gerrit_config.toFile(), FS.detect());
+    // Unlike in the running server, for tests, we don't stack notedb.config on gerrit.config.
+    noteDbConfig = new FileBasedConfig(sitePaths.notedb_config.toFile(), FS.detect());
   }
 
   @Test
   public void rebuildOneChangeTrialMode() throws Exception {
+    assertNoAutoMigrateConfig(gerritConfig);
+    assertNoAutoMigrateConfig(noteDbConfig);
     assertNotesMigrationState(NotesMigrationState.REVIEW_DB);
     setUpOneChange();
 
@@ -101,6 +106,8 @@ public class StandaloneNoteDbMigrationIT extends StandaloneSiteTest {
 
   @Test
   public void migrateOneChange() throws Exception {
+    assertNoAutoMigrateConfig(gerritConfig);
+    assertNoAutoMigrateConfig(noteDbConfig);
     assertNotesMigrationState(NotesMigrationState.REVIEW_DB);
     setUpOneChange();
 
@@ -128,6 +135,8 @@ public class StandaloneNoteDbMigrationIT extends StandaloneSiteTest {
         assertThat(db.changes().get(id2)).isNull();
       }
     }
+    assertNoAutoMigrateConfig(gerritConfig);
+    assertAutoMigrateConfig(noteDbConfig, false);
   }
 
   @Test
@@ -151,6 +160,40 @@ public class StandaloneNoteDbMigrationIT extends StandaloneSiteTest {
 
   @Test
   public void onlineMigrationViaDaemon() throws Exception {
+    assertNoAutoMigrateConfig(gerritConfig);
+    assertNoAutoMigrateConfig(noteDbConfig);
+
+    testOnlineMigration(u -> startServer(u.module(), "--migrate-to-note-db", "true"));
+
+    assertNoAutoMigrateConfig(gerritConfig);
+    assertAutoMigrateConfig(noteDbConfig, false);
+  }
+
+  @Test
+  public void onlineMigrationViaConfig() throws Exception {
+    assertNoAutoMigrateConfig(gerritConfig);
+    assertNoAutoMigrateConfig(noteDbConfig);
+
+    testOnlineMigration(
+        u -> {
+          gerritConfig.setBoolean("noteDb", "changes", "autoMigrate", true);
+          gerritConfig.save();
+          return startServer(u.module());
+        });
+
+    // Auto-migration is turned off in notedb.config, which takes precedence, but is still on in
+    // gerrit.config. This means Puppet can continue overwriting gerrit.config without turning
+    // auto-migration back on.
+    assertAutoMigrateConfig(gerritConfig, true);
+    assertAutoMigrateConfig(noteDbConfig, false);
+  }
+
+  @FunctionalInterface
+  private interface StartServerWithMigration {
+    ServerContext start(IndexUpgradeController u) throws Exception;
+  }
+
+  private void testOnlineMigration(StartServerWithMigration start) throws Exception {
     assertNotesMigrationState(NotesMigrationState.REVIEW_DB);
     int prevVersion = ChangeSchemaDefinitions.INSTANCE.getPrevious().getVersion();
     int currVersion = ChangeSchemaDefinitions.INSTANCE.getLatest().getVersion();
@@ -166,7 +209,7 @@ public class StandaloneNoteDbMigrationIT extends StandaloneSiteTest {
     setOnlineUpgradeConfig(true);
 
     IndexUpgradeController u = new IndexUpgradeController(1);
-    try (ServerContext ctx = startServer(u.module(), "--migrate-to-note-db", "true")) {
+    try (ServerContext ctx = start.start(u)) {
       ChangeIndexCollection indexes = ctx.getInjector().getInstance(ChangeIndexCollection.class);
       assertThat(indexes.getSearchIndex().getSchema().getVersion()).isEqualTo(prevVersion);
 
@@ -199,8 +242,8 @@ public class StandaloneNoteDbMigrationIT extends StandaloneSiteTest {
   }
 
   private void assertNotesMigrationState(NotesMigrationState expected) throws Exception {
-    gerritConfig.load();
+    noteDbConfig.load();
-    assertThat(NotesMigrationState.forConfig(gerritConfig)).hasValue(expected);
+    assertThat(NotesMigrationState.forConfig(noteDbConfig)).hasValue(expected);
   }
 
   private ReviewDb openUnderlyingReviewDb(ServerContext ctx) throws Exception {
@@ -209,6 +252,17 @@ public class StandaloneNoteDbMigrationIT extends StandaloneSiteTest {
         .open();
   }
 
+  private static void assertNoAutoMigrateConfig(StoredConfig cfg) throws Exception {
+    cfg.load();
+    assertThat(cfg.getString("noteDb", "changes", "autoMigrate")).isNull();
+  }
+
+  private static void assertAutoMigrateConfig(StoredConfig cfg, boolean expected) throws Exception {
+    cfg.load();
+    assertThat(cfg.getString("noteDb", "changes", "autoMigrate")).isNotNull();
+    assertThat(cfg.getBoolean("noteDb", "changes", "autoMigrate", false)).isEqualTo(expected);
+  }
+
   private void setOnlineUpgradeConfig(boolean enable) throws Exception {
     gerritConfig.load();
     gerritConfig.setBoolean("index", null, "onlineUpgrade", enable);

gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/server/notedb/OnlineNoteDbMigrationIT.java

@@ -32,6 +32,7 @@ import com.google.gerrit.acceptance.GerritConfig;
 import com.google.gerrit.acceptance.NoHttpd;
 import com.google.gerrit.acceptance.PushOneCommit;
 import com.google.gerrit.acceptance.Sandboxed;
+import com.google.gerrit.acceptance.UseLocalDisk;
 import com.google.gerrit.reviewdb.client.Change;
 import com.google.gerrit.reviewdb.client.Project;
 import com.google.gerrit.reviewdb.client.RefNames;
@@ -65,6 +66,7 @@ import org.junit.Before;
 import org.junit.Test;
 
 @Sandboxed
+@UseLocalDisk
 @NoHttpd
 public class OnlineNoteDbMigrationIT extends AbstractDaemonTest {
   private static final String INVALID_STATE = "deadbeefdeadbeefdeadbeefdeadbeefdeadbeef";
@@ -85,12 +87,13 @@ public class OnlineNoteDbMigrationIT extends AbstractDaemonTest {
   @Inject private Provider<NoteDbMigrator.Builder> migratorBuilderProvider;
   @Inject private Sequences sequences;
 
-  private FileBasedConfig gerritConfig;
+  private FileBasedConfig noteDbConfig;
 
   @Before
   public void setUp() throws Exception {
     assume().that(NoteDbMode.get()).isEqualTo(NoteDbMode.OFF);
-    gerritConfig = new FileBasedConfig(sitePaths.gerrit_config.toFile(), FS.detect());
+    // Unlike in the running server, for tests, we don't stack notedb.config on gerrit.config.
+    noteDbConfig = new FileBasedConfig(sitePaths.notedb_config.toFile(), FS.detect());
     assertNotesMigrationState(REVIEW_DB);
   }
 
@@ -365,27 +368,27 @@ public class OnlineNoteDbMigrationIT extends AbstractDaemonTest {
 
     migrate(b -> b.setStopAtStateForTesting(WRITE));
     assertNotesMigrationState(WRITE);
-    assertThat(NoteDbMigrator.getAutoMigrate(gerritConfig)).isFalse();
+    assertThat(NoteDbMigrator.getAutoMigrate(noteDbConfig)).isFalse();
 
     migrate(b -> b.setAutoMigrate(true).setStopAtStateForTesting(READ_WRITE_NO_SEQUENCE));
     assertNotesMigrationState(READ_WRITE_NO_SEQUENCE);
-    assertThat(NoteDbMigrator.getAutoMigrate(gerritConfig)).isTrue();
+    assertThat(NoteDbMigrator.getAutoMigrate(noteDbConfig)).isTrue();
 
     migrate(b -> b);
     assertNotesMigrationState(NOTE_DB);
-    assertThat(NoteDbMigrator.getAutoMigrate(gerritConfig)).isFalse();
+    assertThat(NoteDbMigrator.getAutoMigrate(noteDbConfig)).isFalse();
   }
 
   private void assertNotesMigrationState(NotesMigrationState expected) throws Exception {
     assertThat(NotesMigrationState.forNotesMigration(notesMigration)).hasValue(expected);
-    gerritConfig.load();
+    noteDbConfig.load();
-    assertThat(NotesMigrationState.forConfig(gerritConfig)).hasValue(expected);
+    assertThat(NotesMigrationState.forConfig(noteDbConfig)).hasValue(expected);
   }
 
   private void setNotesMigrationState(NotesMigrationState state) throws Exception {
-    gerritConfig.load();
+    noteDbConfig.load();
-    state.setConfigValues(gerritConfig);
+    state.setConfigValues(noteDbConfig);
-    gerritConfig.save();
+    noteDbConfig.save();
     notesMigration.setFrom(state);
   }
 

gerrit-server/src/main/java/com/google/gerrit/server/config/GerritConfig.java

@@ -18,10 +18,12 @@ import com.google.gerrit.server.securestore.SecureStore;
 import org.eclipse.jgit.lib.Config;
 
 class GerritConfig extends Config {
+  private final Config gerritConfig;
   private final SecureStore secureStore;
 
-  GerritConfig(Config baseConfig, SecureStore secureStore) {
+  GerritConfig(Config noteDbConfigOverGerritConfig, Config gerritConfig, SecureStore secureStore) {
-    super(baseConfig);
+    super(noteDbConfigOverGerritConfig);
+    this.gerritConfig = gerritConfig;
     this.secureStore = secureStore;
   }
 
@@ -42,4 +44,11 @@ class GerritConfig extends Config {
     }
     return super.getStringList(section, subsection, name);
   }
+
+  @Override
+  public String toText() {
+    // Only show the contents of gerrit.config, hiding the implementation detail that some values
+    // may come from secure.config (or another secure store) and notedb.config.
+    return gerritConfig.toText();
+  }
 }

gerrit-server/src/main/java/com/google/gerrit/server/config/GerritServerConfigProvider.java

@@ -14,11 +14,18 @@
 
 package com.google.gerrit.server.config;
 
+import static java.util.stream.Collectors.joining;
+
+import com.google.gerrit.common.Nullable;
+import com.google.gerrit.server.notedb.NotesMigration;
 import com.google.gerrit.server.securestore.SecureStore;
 import com.google.inject.Inject;
 import com.google.inject.Provider;
 import com.google.inject.ProvisionException;
 import java.io.IOException;
+import java.nio.file.Path;
+import java.util.ArrayList;
+import java.util.List;
 import org.eclipse.jgit.errors.ConfigInvalidException;
 import org.eclipse.jgit.lib.Config;
 import org.eclipse.jgit.storage.file.FileBasedConfig;
@@ -41,19 +48,46 @@ class GerritServerConfigProvider implements Provider<Config> {
 
   @Override
   public Config get() {
-    FileBasedConfig cfg = new FileBasedConfig(site.gerrit_config.toFile(), FS.DETECTED);
+    FileBasedConfig baseConfig = loadConfig(null, site.gerrit_config);
-
+    if (!baseConfig.getFile().exists()) {
-    if (!cfg.getFile().exists()) {
       log.info("No " + site.gerrit_config.toAbsolutePath() + "; assuming defaults");
-      return new GerritConfig(cfg, secureStore);
     }
 
+    FileBasedConfig noteDbConfigOverBaseConfig = loadConfig(baseConfig, site.notedb_config);
+    checkNoteDbConfig(noteDbConfigOverBaseConfig);
+
+    return new GerritConfig(noteDbConfigOverBaseConfig, baseConfig, secureStore);
+  }
+
+  private static FileBasedConfig loadConfig(@Nullable Config base, Path path) {
+    FileBasedConfig cfg = new FileBasedConfig(base, path.toFile(), FS.DETECTED);
     try {
       cfg.load();
     } catch (IOException | ConfigInvalidException e) {
       throw new ProvisionException(e.getMessage(), e);
     }
+    return cfg;
+  }
 
-    return new GerritConfig(cfg, secureStore);
+  private static void checkNoteDbConfig(FileBasedConfig noteDbConfig) {
+    List<String> bad = new ArrayList<>();
+    for (String section : noteDbConfig.getSections()) {
+      if (section.equals(NotesMigration.SECTION_NOTE_DB)) {
+        continue;
+      }
+      for (String subsection : noteDbConfig.getSubsections(section)) {
+        noteDbConfig
+            .getNames(section, subsection, false)
+            .forEach(n -> bad.add(section + "." + subsection + "." + n));
+      }
+      noteDbConfig.getNames(section, false).forEach(n -> bad.add(section + "." + n));
+    }
+    if (!bad.isEmpty()) {
+      throw new ProvisionException(
+          "Non-NoteDb config options not allowed in "
+              + noteDbConfig.getFile()
+              + ":\n"
+              + bad.stream().collect(joining("\n")));
+    }
   }
 }

gerrit-server/src/main/java/com/google/gerrit/server/config/SitePaths.java

@@ -53,6 +53,7 @@ public final class SitePaths {
 
   public final Path gerrit_config;
   public final Path secure_config;
+  public final Path notedb_config;
 
   public final Path ssl_keystore;
   public final Path ssh_key;
@@ -100,6 +101,7 @@ public final class SitePaths {
 
     gerrit_config = etc_dir.resolve("gerrit.config");
     secure_config = etc_dir.resolve("secure.config");
+    notedb_config = etc_dir.resolve("notedb.config");
 
     ssl_keystore = etc_dir.resolve("keystore");
     ssh_key = etc_dir.resolve("ssh_host_key");

gerrit-server/src/main/java/com/google/gerrit/server/notedb/rebuild/NoteDbMigrator.java

@@ -320,6 +320,7 @@ public class NoteDbMigrator implements AutoCloseable {
   }
 
   private final FileBasedConfig gerritConfig;
+  private final FileBasedConfig noteDbConfig;
   private final SchemaFactory<ReviewDb> schemaFactory;
   private final GitRepositoryManager repoManager;
   private final AllProjectsName allProjects;
@@ -374,7 +375,6 @@ public class NoteDbMigrator implements AutoCloseable {
     this.userFactory = userFactory;
     this.globalNotesMigration = globalNotesMigration;
     this.primaryStorageMigrator = primaryStorageMigrator;
-    this.gerritConfig = new FileBasedConfig(sitePaths.gerrit_config.toFile(), FS.detect());
     this.executor = executor;
     this.projects = projects;
     this.changes = changes;
@@ -384,6 +384,11 @@ public class NoteDbMigrator implements AutoCloseable {
     this.forceRebuild = forceRebuild;
     this.sequenceGap = sequenceGap;
     this.autoMigrate = autoMigrate;
+
+    // Stack notedb.config over gerrit.config, in the same way as GerritServerConfigProvider.
+    this.gerritConfig = new FileBasedConfig(sitePaths.gerrit_config.toFile(), FS.detect());
+    this.noteDbConfig =
+        new FileBasedConfig(gerritConfig, sitePaths.notedb_config.toFile(), FS.detect());
   }
 
   @Override
@@ -564,9 +569,10 @@ public class NoteDbMigrator implements AutoCloseable {
   private Optional<NotesMigrationState> loadState() throws IOException {
     try {
       gerritConfig.load();
-      return NotesMigrationState.forConfig(gerritConfig);
+      noteDbConfig.load();
+      return NotesMigrationState.forConfig(noteDbConfig);
     } catch (ConfigInvalidException | IllegalArgumentException e) {
-      log.warn("error reading NoteDb migration options from " + gerritConfig.getFile(), e);
+      log.warn("error reading NoteDb migration options from " + noteDbConfig.getFile(), e);
       return Optional.empty();
     }
   }
@@ -597,9 +603,9 @@ public class NoteDbMigrator implements AutoCloseable {
                     ? "But found this state:\n" + actualOldState.get().toText()
                     : "But could not parse the current state"));
       }
-      newState.setConfigValues(gerritConfig);
+      newState.setConfigValues(noteDbConfig);
-      additionalUpdates.accept(gerritConfig);
+      additionalUpdates.accept(noteDbConfig);
-      gerritConfig.save();
+      noteDbConfig.save();
 
       // Only set in-memory state once it's been persisted to storage.
       globalNotesMigration.setFrom(newState);
@@ -610,9 +616,9 @@ public class NoteDbMigrator implements AutoCloseable {
 
   private void enableAutoMigrate() throws MigrationException {
     try {
-      gerritConfig.load();
+      noteDbConfig.load();
-      setAutoMigrate(gerritConfig, true);
+      setAutoMigrate(noteDbConfig, true);
-      gerritConfig.save();
+      noteDbConfig.save();
     } catch (ConfigInvalidException | IOException e) {
       throw new MigrationException("Error saving auto-migration config", e);
     }