Prefer "app is ready" flag to "storage is ready" flag.

Signal/src/AppDelegate.m

@@ -946,7 +946,7 @@ static NSString *const kURLHostVerifyPrefix             = @"verify";
 
     DDLogInfo(@"%@ ensureRootViewController", self.logTag);
 
-    if (![OWSStorage isStorageReady] || self.hasInitialRootViewController) {
+    if (!AppReadiness.isAppReady || self.hasInitialRootViewController) {
         return;
     }
     self.hasInitialRootViewController = YES;

SignalServiceKit/src/Messages/OWSBatchMessageProcessor.m

@@ -4,6 +4,7 @@
 
 #import "OWSBatchMessageProcessor.h"
 #import "AppContext.h"
+#import "AppReadiness.h"
 #import "NSArray+OWS.h"
 #import "OWSBackgroundTask.h"
 #import "OWSMessageManager.h"
@@ -262,8 +263,8 @@ NSString *const OWSMessageContentJobFinderExtensionGroup = @"OWSMessageContentJo
     _isDrainingQueue = NO;
 
     [[NSNotificationCenter defaultCenter] addObserver:self
-                                             selector:@selector(storageIsReady)
+                                             selector:@selector(appIsReady)
-                                                 name:StorageIsReadyNotification
+                                                 name:AppIsReadyNotification
                                                object:nil];
 
     return self;
@@ -274,7 +275,7 @@ NSString *const OWSMessageContentJobFinderExtensionGroup = @"OWSMessageContentJo
     [[NSNotificationCenter defaultCenter] removeObserver:self];
 }
 
-- (void)storageIsReady
+- (void)appIsReady
 {
     [self drainQueue];
 }
@@ -307,7 +308,7 @@ NSString *const OWSMessageContentJobFinderExtensionGroup = @"OWSMessageContentJo
     }
 
     dispatch_async(self.serialQueue, ^{
-        if (![OWSStorage isStorageReady]) {
+        if (!AppReadiness.isAppReady) {
             // We don't want to process incoming messages until storage is ready.
             return;
         }

SignalServiceKit/src/Messages/OWSMessageReceiver.m

@@ -4,6 +4,7 @@
 
 #import "OWSMessageReceiver.h"
 #import "AppContext.h"
+#import "AppReadiness.h"
 #import "NSArray+OWS.h"
 #import "OWSBackgroundTask.h"
 #import "OWSBatchMessageProcessor.h"
@@ -242,8 +243,8 @@ NSString *const OWSMessageDecryptJobFinderExtensionGroup = @"OWSMessageProcessin
     _isDrainingQueue = NO;
 
     [[NSNotificationCenter defaultCenter] addObserver:self
-                                             selector:@selector(storageIsReady)
+                                             selector:@selector(appIsReady)
-                                                 name:StorageIsReadyNotification
+                                                 name:AppIsReadyNotification
                                                object:nil];
 
     return self;
@@ -254,7 +255,7 @@ NSString *const OWSMessageDecryptJobFinderExtensionGroup = @"OWSMessageProcessin
     [[NSNotificationCenter defaultCenter] removeObserver:self];
 }
 
-- (void)storageIsReady
+- (void)appIsReady
 {
     [self drainQueue];
 }
@@ -284,7 +285,7 @@ NSString *const OWSMessageDecryptJobFinderExtensionGroup = @"OWSMessageProcessin
     }
 
     dispatch_async(self.serialQueue, ^{
-        if (![OWSStorage isStorageReady]) {
+        if (!AppReadiness.isAppReady) {
             // We don't want to process incoming messages until storage is ready.
             return;
         }

SignalServiceKit/src/Messages/OWSReadReceiptManager.m

@@ -1,8 +1,9 @@
 //
-//  Copyright (c) 2017 Open Whisper Systems. All rights reserved.
+//  Copyright (c) 2018 Open Whisper Systems. All rights reserved.
 //
 
 #import "OWSReadReceiptManager.h"
+#import "AppReadiness.h"
 #import "NSNotificationCenter+OWS.h"
 #import "OWSLinkedDeviceReadReceipt.h"
 #import "OWSMessageSender.h"
@@ -177,8 +178,8 @@ NSString *const OWSReadReceiptManagerAreReadReceiptsEnabled = @"areReadReceiptsE
     OWSSingletonAssert();
 
     [[NSNotificationCenter defaultCenter] addObserver:self
-                                             selector:@selector(storageIsReady)
+                                             selector:@selector(appIsReady)
-                                                 name:StorageIsReadyNotification
+                                                 name:AppIsReadyNotification
                                                object:nil];
 
     // Try to start processing.
@@ -192,7 +193,7 @@ NSString *const OWSReadReceiptManagerAreReadReceiptsEnabled = @"areReadReceiptsE
     [[NSNotificationCenter defaultCenter] removeObserver:self];
 }
 
-- (void)storageIsReady
+- (void)appIsReady
 {
     [self scheduleProcessing];
 }
@@ -203,7 +204,7 @@ NSString *const OWSReadReceiptManagerAreReadReceiptsEnabled = @"areReadReceiptsE
     dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
         @synchronized(self)
         {
-            if (![OWSStorage isStorageReady]) {
+            if (!AppReadiness.isAppReady) {
                 DDLogInfo(@"%@ Deferring read receipt processing; storage not yet ready.", self.logTag);
                 return;
             }

SignalServiceKit/src/Util/AppReadiness.h

@@ -4,6 +4,8 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
+extern NSString *const AppIsReadyNotification;
+
 typedef void (^AppReadyBlock)(void);
 
 @interface AppReadiness : NSObject

SignalServiceKit/src/Util/AppReadiness.m

@@ -3,9 +3,12 @@
 //
 
 #import "AppReadiness.h"
+#import "NSNotificationCenter+OWS.h"
 
 NS_ASSUME_NONNULL_BEGIN
 
+NSString *const AppIsReadyNotification = @"AppIsReadyNotification";
+
 @interface AppReadiness ()
 
 @property (atomic) BOOL isAppReady;
@@ -82,6 +85,8 @@ NS_ASSUME_NONNULL_BEGIN
     self.isAppReady = YES;
 
     [self runAppReadyBlocks];
+
+    [[NSNotificationCenter defaultCenter] postNotificationNameAsync:AppIsReadyNotification object:nil userInfo:nil];
 }
 
 - (void)runAppReadyBlocks

SignalShareExtension/ShareViewController.swift

@@ -282,7 +282,7 @@ public class ShareViewController: UINavigationController, ShareViewDelegate, SAE
     private func ensureRootViewController() {
         Logger.debug("\(self.logTag) \(#function)")
 
-        guard OWSStorage.isStorageReady() else {
+        guard AppReadiness.isAppReady() else {
             return
         }
         guard !hasInitialRootViewController else {