Metric for fresh user vs reregistration

// FREEBIE

src/main/java/org/whispersystems/textsecuregcm/controllers/AccountController.java

@@ -16,6 +16,10 @@
  */
 package org.whispersystems.textsecuregcm.controllers;
 
+import com.codahale.metrics.Meter;
+import com.codahale.metrics.MetricRegistry;
+import com.codahale.metrics.SharedMetricRegistries;
+import com.codahale.metrics.Timer;
 import com.codahale.metrics.annotation.Timed;
 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Optional;
@@ -38,8 +42,10 @@ import org.whispersystems.textsecuregcm.storage.AccountsManager;
 import org.whispersystems.textsecuregcm.storage.Device;
 import org.whispersystems.textsecuregcm.storage.MessagesManager;
 import org.whispersystems.textsecuregcm.storage.PendingAccountsManager;
+import org.whispersystems.textsecuregcm.util.Constants;
 import org.whispersystems.textsecuregcm.util.Util;
 import org.whispersystems.textsecuregcm.util.VerificationCode;
+import org.whispersystems.textsecuregcm.websocket.WebSocketConnection;
 
 import javax.validation.Valid;
 import javax.ws.rs.Consumes;
@@ -60,12 +66,15 @@ import java.security.NoSuchAlgorithmException;
 import java.security.SecureRandom;
 import java.util.Map;
 
+import static com.codahale.metrics.MetricRegistry.name;
 import io.dropwizard.auth.Auth;
 
 @Path("/v1/accounts")
 public class AccountController {
 
-  private final Logger logger = LoggerFactory.getLogger(AccountController.class);
+  private final Logger         logger         = LoggerFactory.getLogger(AccountController.class);
+  private final MetricRegistry metricRegistry = SharedMetricRegistries.getOrCreate(Constants.METRICS_NAME);
+  private final Meter          newUserMeter   = metricRegistry.meter(name(AccountController.class, "brand_new_user"));
 
   private final PendingAccountsManager                pendingAccounts;
   private final AccountsManager                       accounts;
@@ -318,7 +327,10 @@ public class AccountController {
     account.setNumber(number);
     account.addDevice(device);
 
-    accounts.create(account);
+    if (accounts.create(account)) {
+      newUserMeter.mark();
+    }
+
     messagesManager.clear(number);
     pendingAccounts.remove(number);
   }

src/main/java/org/whispersystems/textsecuregcm/storage/Accounts.java

@@ -53,11 +53,10 @@ public abstract class Accounts {
   private static final ObjectMapper mapper = SystemMapper.getMapper();
 
   @SqlUpdate("INSERT INTO accounts (" + NUMBER + ", " + DATA + ") VALUES (:number, CAST(:data AS json))")
-  @GetGeneratedKeys
-  abstract long insertStep(@AccountBinder Account account);
+  abstract void insertStep(@AccountBinder Account account);
 
   @SqlUpdate("DELETE FROM accounts WHERE " + NUMBER + " = :number")
-  abstract void removeAccount(@Bind("number") String number);
+  abstract int removeAccount(@Bind("number") String number);
 
   @SqlUpdate("UPDATE accounts SET " + DATA + " = CAST(:data AS json) WHERE " + NUMBER + " = :number")
   abstract void update(@AccountBinder Account account);
@@ -87,9 +86,11 @@ public abstract class Accounts {
   public abstract int getUnsignedKeysCount(@Bind("since") long since);
 
   @Transaction(TransactionIsolationLevel.SERIALIZABLE)
-  public long create(Account account) {
-    removeAccount(account.getNumber());
-    return insertStep(account);
+  public boolean create(Account account) {
+    int rows = removeAccount(account.getNumber());
+    insertStep(account);
+
+    return rows == 0;
   }
 
   @SqlUpdate("VACUUM accounts")

src/main/java/org/whispersystems/textsecuregcm/storage/AccountsManager.java

@@ -64,10 +64,12 @@ public class AccountsManager {
     return accounts.getAll();
   }
 
-  public void create(Account account) {
-    accounts.create(account);
+  public boolean create(Account account) {
+    boolean freshUser = accounts.create(account);
     memcacheSet(account.getNumber(), account);
     updateDirectory(account);
+
+    return freshUser;
   }
 
   public void update(Account account) {