Merge branch 'stable-3.0' into stable-3.1

* stable-3.0:
  Simplify Init for Elasticsearch
  Refactor reindexProjects in Init to be general
  Avoid auto-reindex of projects during init when unneeded

Change-Id: Id945a48cebe8408e86e3c4025fc6fbb1cb09bdc6

java/com/google/gerrit/pgm/Init.java

@@ -22,6 +22,7 @@ import com.google.common.collect.Sets;
 import com.google.gerrit.common.IoUtil;
 import com.google.gerrit.common.PageLinks;
 import com.google.gerrit.common.PluginData;
+import com.google.gerrit.index.SchemaDefinitions;
 import com.google.gerrit.index.project.ProjectSchemaDefinitions;
 import com.google.gerrit.pgm.init.BaseInit;
 import com.google.gerrit.pgm.init.Browser;
@@ -30,6 +31,10 @@ import com.google.gerrit.pgm.init.api.ConsoleUI;
 import com.google.gerrit.pgm.util.ErrorLogFile;
 import com.google.gerrit.server.config.GerritServerConfigModule;
 import com.google.gerrit.server.config.SitePath;
+import com.google.gerrit.server.index.GerritIndexStatus;
+import com.google.gerrit.server.index.account.AccountSchemaDefinitions;
+import com.google.gerrit.server.index.change.ChangeSchemaDefinitions;
+import com.google.gerrit.server.index.group.GroupSchemaDefinitions;
 import com.google.gerrit.server.ioutil.HostPlatform;
 import com.google.gerrit.server.securestore.SecureStoreClassName;
 import com.google.gerrit.server.util.ReplicaUtil;
@@ -60,9 +65,6 @@ public class Init extends BaseInit {
   @Option(name = "--no-auto-start", usage = "Don't automatically start daemon after init")
   private boolean noAutoStart;
 
-  @Option(name = "--no-reindex", usage = "Don't automatically reindex any entities")
-  private boolean noReindex;
-
   @Option(name = "--skip-plugins", usage = "Don't install plugins")
   private boolean skipPlugins;
 
@@ -91,6 +93,8 @@ public class Init extends BaseInit {
 
   @Inject Browser browser;
 
+  private GerritIndexStatus indexStatus;
+
   public Init() {
     super(new WarDistribution(), null);
   }
@@ -103,6 +107,7 @@ public class Init extends BaseInit {
 
   @Override
   protected boolean beforeInit(SiteInit init) throws Exception {
+    indexStatus = new GerritIndexStatus(init.site);
     ErrorLogFile.errorOnlyConsole();
 
     if (!skipPlugins) {
@@ -131,6 +136,12 @@ public class Init extends BaseInit {
 
   @Override
   protected void afterInit(SiteRun run) throws Exception {
+    List<SchemaDefinitions<?>> schemaDefs =
+        ImmutableList.of(
+            AccountSchemaDefinitions.INSTANCE,
+            ChangeSchemaDefinitions.INSTANCE,
+            GroupSchemaDefinitions.INSTANCE,
+            ProjectSchemaDefinitions.INSTANCE);
     List<Module> modules = new ArrayList<>();
     modules.add(
         new AbstractModule() {
@@ -146,7 +157,11 @@ public class Init extends BaseInit {
     modules.add(new GerritServerConfigModule());
     Guice.createInjector(modules).injectMembers(this);
     if (!ReplicaUtil.isReplica(run.flags.cfg)) {
-      reindexProjects();
+      for (SchemaDefinitions<?> schemaDef : schemaDefs) {
+        if (!indexStatus.exists(schemaDef.getName())) {
+          reindex(schemaDef);
+        }
+      }
     }
     start(run);
   }
@@ -259,11 +274,7 @@ public class Init extends BaseInit {
     }
   }
 
-  private void reindexProjects() throws Exception {
-    if (noReindex) {
-      return;
-    }
-    // Reindex all projects, so that we bootstrap the project index for new installations
+  private void reindex(SchemaDefinitions<?> schemaDef) throws Exception {
     List<String> reindexArgs =
         ImmutableList.of(
             "--site-path",
@@ -271,8 +282,9 @@ public class Init extends BaseInit {
             "--threads",
             Integer.toString(1),
             "--index",
-            ProjectSchemaDefinitions.NAME);
-    getConsoleUI().message("Init complete, reindexing projects with:");
+            schemaDef.getName());
+    getConsoleUI()
+        .message(String.format("Init complete, reindexing %s with:", schemaDef.getName()));
     getConsoleUI().message(" reindex " + reindexArgs.stream().collect(joining(" ")));
     Reindex reindexPgm = new Reindex();
     reindexPgm.main(reindexArgs.stream().toArray(String[]::new));