Merge pull request #77 from ParsePlatform/grantland.authentication_controller

Implement ParseAuthenticationManager

Author: grantland

Parse/src/main/java/com/parse/AnonymousAuthenticationProvider.java

@@ -18,7 +18,7 @@
  * An authentication provider that generates a random UUID that will be used as
  * a key to identify this anonymous user until the user has been claimed.
  */
-/** package */ class AnonymousAuthenticationProvider extends ParseAuthenticationProvider {
+/** package */ class AnonymousAuthenticationProvider implements ParseAuthenticationProvider {
 
   @Override
   public Task<Map<String, String>> authenticateAsync() {
@@ -32,8 +32,9 @@ public Map<String, String> getAuthData() {
   }
 
   @Override
-  public void deauthenticate() {
+  public Task<Void> deauthenticateAsync() {
     // do nothing
+    return Task.forResult(null);
   }
 
   @Override

Parse/src/main/java/com/parse/CachedCurrentUserController.java

@@ -46,7 +46,7 @@ public Task<Void> setAsync(final ParseUser user) {
       public Task<Void> then(Task<Void> toAwait) throws Exception {
         return toAwait.continueWithTask(new Continuation<Void, Task<Void>>() {
           @Override
-          public Task<Void> then(Task<Void> ignored) throws Exception {
+          public Task<Void> then(Task<Void> task) throws Exception {
             ParseUser oldCurrentUser;
             synchronized (mutex) {
               oldCurrentUser = currentUser;
@@ -55,9 +55,13 @@ public Task<Void> then(Task<Void> ignored) throws Exception {
             if (oldCurrentUser != null && oldCurrentUser != user) {
               // We don't need to revoke the token since we're not explicitly calling logOut
               // We don't need to remove persisted files since we're overwriting them
-              oldCurrentUser.logOutInternal();
+              return oldCurrentUser.logOutAsync(false);
             }
-
+            return task;
+          }
+        }).continueWithTask(new Continuation<Void, Task<Void>>() {
+          @Override
+          public Task<Void> then(Task<Void> task) throws Exception {
             synchronized (user.mutex) {
               user.setIsCurrentUser(true);
               user.synchronizeAllAuthData();

Parse/src/main/java/com/parse/ParseAnonymousUtils.java

@@ -8,6 +8,9 @@
  */
 package com.parse;
 
+import java.util.Map;
+
+import bolts.Continuation;
 import bolts.Task;
 
 /**
@@ -62,7 +65,13 @@ public static boolean isLinked(ParseUser user) {
    * @return A Task that will be resolved when logging in is completed.
    */
   public static Task<ParseUser> logInInBackground() {
-    return getProvider().logInAsync();
+    final ParseAuthenticationProvider provider = getProvider();
+    return provider.authenticateAsync().onSuccessTask(new Continuation<Map<String, String>, Task<ParseUser>>() {
+      @Override
+      public Task<ParseUser> then(Task<Map<String, String>> task) throws Exception {
+        return ParseUser.logInWithAsync(provider.getAuthType(), task.getResult());
+      }
+    });
   }
 
   /**

Parse/src/main/java/com/parse/ParseAuthenticationManager.java

@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2015-present, Parse, LLC.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+package com.parse;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import bolts.Continuation;
+import bolts.Task;
+
+/*** package */ class ParseAuthenticationManager {
+
+  private final Object lock = new Object();
+  private final Map<String, ParseAuthenticationProvider> authenticationProviders = new HashMap<>();
+  private final ParseCurrentUserController controller;
+
+  public ParseAuthenticationManager(ParseCurrentUserController controller) {
+    this.controller = controller;
+  }
+
+  public void register(ParseAuthenticationProvider provider) {
+    final String authType = provider.getAuthType();
+    if (authType == null) {
+      throw new IllegalArgumentException("Invalid authType: " + null);
+    }
+
+    synchronized (lock) {
+      if (authenticationProviders.containsKey(authType)) {
+        throw new IllegalStateException("Another " + authType + " provider was already registered: "
+            + authenticationProviders.get(authType));
+      }
+      authenticationProviders.put(provider.getAuthType(), provider);
+    }
+
+    if (provider instanceof AnonymousAuthenticationProvider) {
+      // There's nothing to synchronize
+      return;
+    }
+
+    // Synchronize the current user with the auth provider.
+    controller.getAsync(false).onSuccess(new Continuation<ParseUser, Void>() {
+      @Override
+      public Void then(Task<ParseUser> task) throws Exception {
+        ParseUser user = task.getResult();
+        if (user != null) {
+          user.synchronizeAuthData(authType);
+        }
+        return null;
+      }
+    });
+  }
+
+  public boolean restoreAuthentication(String authType, Map<String, String> authData) {
+    ParseAuthenticationProvider provider;
+    synchronized (lock) {
+      provider = authenticationProviders.get(authType);
+    }
+    return provider == null || provider.restoreAuthentication(authData);
+  }
+
+  public Task<Void> deauthenticateAsync(String authType) {
+    ParseAuthenticationProvider provider;
+    synchronized (lock) {
+      provider = authenticationProviders.get(authType);
+    }
+    if (provider != null) {
+      return provider.deauthenticateAsync();
+    }
+    return Task.forResult(null);
+  }
+}

Parse/src/main/java/com/parse/ParseAuthenticationProvider.java

@@ -10,33 +10,32 @@
 
 import java.util.Map;
 
-import bolts.Continuation;
 import bolts.Task;
 
 /**
  * Provides a general interface for delegation of the authentication process.
  */
-/** package */ abstract class ParseAuthenticationProvider {
+/** package */ interface ParseAuthenticationProvider {
 
   /**
    * Provides a unique name for the type of authentication the provider does.
    * For example, the FacebookAuthenticationProvider would return "facebook".
    */
-  public abstract String getAuthType();
+  String getAuthType();
 
   /**
    * Begins the authentication process and invokes onSuccess() or onError() on
    * the callback upon completion. This call should not block.
    *
    * @return A task that will be resolved upon the completion of authentication.
    */
-  public abstract Task<Map<String, String>> authenticateAsync();
+  Task<Map<String, String>> authenticateAsync();
 
   /**
    * Deauthenticates (logs out) the user associated with this provider. This
    * call may block.
    */
-  public abstract void deauthenticate();
+  Task<Void> deauthenticateAsync();
 
   /**
    * Restores authentication that has been serialized, such as session keys,
@@ -49,35 +48,5 @@
    *         value indicates that the user should no longer be associated
    *         because of bad auth data.
    */
-  public abstract boolean restoreAuthentication(Map<String, String> authData);
-
-  public Task<ParseUser> logInAsync() {
-    return authenticateAsync().onSuccessTask(new Continuation<Map<String, String>, Task<ParseUser>>() {
-      @Override
-      public Task<ParseUser> then(Task<Map<String, String>> task) throws Exception {
-        return logInAsync(task.getResult());
-      }
-    });
-  }
-
-  public Task<ParseUser> logInAsync(Map<String, String> authData) {
-    return ParseUser.logInWithAsync(getAuthType(), authData);
-  }
-
-  public Task<Void> linkAsync(final ParseUser user) {
-    return authenticateAsync().onSuccessTask(new Continuation<Map<String, String>, Task<Void>>() {
-      @Override
-      public Task<Void> then(Task<Map<String, String>> task) throws Exception {
-        return linkAsync(user, task.getResult());
-      }
-    });
-  }
-
-  public Task<Void> linkAsync(ParseUser user, Map<String, String> authData) {
-    return user.linkWithAsync(getAuthType(), authData, user.getSessionToken());
-  }
-
-  public Task<Void> unlinkAsync(ParseUser user) {
-    return user.unlinkFromAsync(getAuthType());
-  }
+  boolean restoreAuthentication(Map<String, String> authData);
 }

Parse/src/main/java/com/parse/ParseCorePlugins.java

@@ -35,6 +35,9 @@ public static ParseCorePlugins getInstance() {
   private AtomicReference<ParseCurrentInstallationController> currentInstallationController =
       new AtomicReference<>();
 
+  private AtomicReference<ParseAuthenticationManager> authenticationController =
+      new AtomicReference<>();
+
   private AtomicReference<ParseQueryController> queryController = new AtomicReference<>();
   private AtomicReference<ParseFileController> fileController = new AtomicReference<>();
   private AtomicReference<ParseAnalyticsController> analyticsController = new AtomicReference<>();
@@ -59,6 +62,8 @@ private ParseCorePlugins() {
     currentUserController.set(null);
     currentInstallationController.set(null);
 
+    authenticationController.set(null);
+
     queryController.set(null);
     fileController.set(null);
     analyticsController.set(null);
@@ -285,6 +290,23 @@ public void registerCurrentInstallationController(ParseCurrentInstallationContro
     }
   }
 
+  public ParseAuthenticationManager getAuthenticationManager() {
+    if (authenticationController.get() == null) {
+      ParseAuthenticationManager controller =
+          new ParseAuthenticationManager(getCurrentUserController());
+      authenticationController.compareAndSet(null, controller);
+    }
+    return authenticationController.get();
+  }
+
+  public void registerAuthenticationManager(ParseAuthenticationManager manager) {
+    if (!authenticationController.compareAndSet(null, manager)) {
+      throw new IllegalStateException(
+          "Another authentication manager was already registered: " +
+              authenticationController.get());
+    }
+  }
+
   public ParseDefaultACLController getDefaultACLController() {
     if (defaultACLController.get() == null) {
       ParseDefaultACLController controller = new ParseDefaultACLController();