improved app asset management and retrying to acquire

Limelight/Network/AppAssetManager.h

@@ -17,7 +17,7 @@
 
 @end
 
-@interface AppManager : NSObject
+@interface AppAssetManager : NSObject
 
 - (id) initWithCallback:(id<AppAssetCallback>)callback;
 - (void) retrieveAssets:(NSArray*)appList fromHost:(Host*)host;

Limelight/Network/AppAssetManager.m

@@ -0,0 +1,57 @@
+//
+//  AppManager.m
+//  Limelight
+//
+//  Created by Diego Waxemberg on 10/25/14.
+//  Copyright (c) 2014 Limelight Stream. All rights reserved.
+//
+
+#import "AppAssetManager.h"
+#import "CryptoManager.h"
+#import "Utils.h"
+#import "HttpResponse.h"
+#import "AppAssetRetriever.h"
+
+@implementation AppAssetManager {
+    NSOperationQueue* _opQueue;
+    id<AppAssetCallback> _callback;
+    Host* _host;
+    NSMutableDictionary* _imageCache;
+}
+
+- (id) initWithCallback:(id<AppAssetCallback>)callback {
+    self = [super init];
+    _callback = callback;
+    _opQueue = [[NSOperationQueue alloc] init];
+    _imageCache = [[NSMutableDictionary alloc] init];
+
+    return self;
+}
+
+- (void) retrieveAssets:(NSArray*)appList fromHost:(Host*)host {
+    Host* oldHost = _host;
+    _host = host;
+    BOOL useCache = [oldHost.uuid isEqualToString:_host.uuid];
+    NSLog(@"Using cached app images: %d", useCache);
+    if (!useCache) {
+        [_imageCache removeAllObjects];
+    }
+    for (App* app in appList) {
+        AppAssetRetriever* retriever = [[AppAssetRetriever alloc] init];
+        retriever.app = app;
+        retriever.host = _host;
+        retriever.callback = _callback;
+        retriever.cache = useCache ? _imageCache : nil;
+        [_opQueue addOperation:retriever];
+    }
+}
+
+- (void) stopRetrieving {
+    [_opQueue cancelAllOperations];
+}
+
+- (void) sendCallBackForApp:(App*)app {
+    [_callback receivedAssetForApp:app];
+}
+
+@end

Limelight/Network/AppAssetRetriever.h

@@ -0,0 +1,21 @@
+//
+//  AppAssetRetriever.h
+//  Limelight
+//
+//  Created by Diego Waxemberg on 1/31/15.
+//  Copyright (c) 2015 Limelight Stream. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+#import "Host.h"
+#import "App.h"
+#import "AppAssetManager.h"
+
+@interface AppAssetRetriever : NSOperation
+
+@property (nonatomic) Host* host;
+@property (nonatomic) App* app;
+@property (nonatomic) NSMutableDictionary* cache;
+@property (nonatomic) id<AppAssetCallback> callback;
+
+@end

Limelight/Network/AppAssetRetriever.m

@@ -0,0 +1,52 @@
+//
+//  AppAssetRetriever.m
+//  Limelight
+//
+//  Created by Diego Waxemberg on 1/31/15.
+//  Copyright (c) 2015 Limelight Stream. All rights reserved.
+//
+
+#import "AppAssetRetriever.h"
+#import "HttpManager.h"
+#import "CryptoManager.h"
+#import "HttpResponse.h"
+
+@implementation AppAssetRetriever
+static const double RETRY_DELAY = 1; // seconds
+
+
+- (void) main {
+    UIImage* appImage = nil;
+    while (![self isCancelled] && appImage == nil) {
+        if (self.cache) {
+            @synchronized(self.cache) {
+                UIImage* cachedImage = [self.cache objectForKey:self.app.appId];
+                if (cachedImage != nil) {
+                    appImage = cachedImage;
+                    self.app.appImage = appImage;
+                }
+            }
+        }
+        if (appImage == nil) {
+            HttpManager* hMan = [[HttpManager alloc] initWithHost:_host.address uniqueId:[CryptoManager getUniqueID] deviceName:deviceName cert:[CryptoManager readCertFromFile]];
+            HttpResponse* appAssetResp = [hMan executeRequestSynchronously:[hMan newAppAssetRequestWithAppId:self.app.appId]];
+            
+            appImage = [UIImage imageWithData:appAssetResp.responseData];
+            self.app.appImage = appImage;
+            if (appImage != nil) {
+                @synchronized(self.cache) {
+                    [self.cache setObject:appImage forKey:self.app.appId];
+                }
+            }
+        }
+
+        [NSThread sleepForTimeInterval:RETRY_DELAY];
+    }
+    [self performSelectorOnMainThread:@selector(sendCallbackForApp:) withObject:self.app waitUntilDone:NO];
+}
+
+- (void) sendCallbackForApp:(App*)app {
+    [self.callback receivedAssetForApp:app];
+}
+
+@end

Limelight/Network/AppManager.m

@@ -1,81 +0,0 @@
-//
-//  AppManager.m
-//  Limelight
-//
-//  Created by Diego Waxemberg on 10/25/14.
-//  Copyright (c) 2014 Limelight Stream. All rights reserved.
-//
-
-#import "AppManager.h"
-#import "CryptoManager.h"
-#import "Utils.h"
-#import "HttpResponse.h"
-
-@implementation AppManager {
-    NSOperationQueue* _opQueue;
-    id<AppAssetCallback> _callback;
-    Host* _host;
-    NSString* _uniqueId;
-    NSData* _cert;
-    NSMutableDictionary* _imageCache;
-}
-
-- (id) initWithCallback:(id<AppAssetCallback>)callback {
-    self = [super init];
-    _callback = callback;
-    _opQueue = [[NSOperationQueue alloc] init];
-    _imageCache = [[NSMutableDictionary alloc] init];
-    _uniqueId = [CryptoManager getUniqueID];
-    return self;
-}
-
-- (void) retrieveAssets:(NSArray*)appList fromHost:(Host*)host {
-    Host* oldHost = _host;
-    _host = host;
-    BOOL useCache = [oldHost.uuid isEqualToString:_host.uuid];
-    NSLog(@"Using cached app images: %d", useCache);
-    if (!useCache) {
-        [_imageCache removeAllObjects];
-    }
-    for (App* app in appList) {
-        [_opQueue addOperationWithBlock:^{
-            [self retrieveAssetForApp:app useCache:useCache];
-        }];
-    }
-}
-
-- (void) stopRetrieving {
-    [_opQueue cancelAllOperations];
-}
-
-- (void) retrieveAssetForApp:(App*)app useCache:(BOOL)useCache {
-    UIImage* appImage = nil;
-    if (useCache) {
-        @synchronized(_imageCache) {
-            UIImage* cachedImage = [_imageCache objectForKey:app.appId];
-            if (cachedImage != nil) {
-                appImage = cachedImage;
-                app.appImage = appImage;
-            }
-        }
-    }
-    if (appImage == nil) {
-        HttpManager* hMan = [[HttpManager alloc] initWithHost:_host.address uniqueId:_uniqueId deviceName:deviceName cert:_cert];
-        HttpResponse* appAssetResp = [hMan executeRequestSynchronously:[hMan newAppAssetRequestWithAppId:app.appId]];
-        
-        appImage = [UIImage imageWithData:appAssetResp.responseData];
-        app.appImage = appImage;
-        if (appImage != nil) {
-            @synchronized(_imageCache) {
-                [_imageCache setObject:appImage forKey:app.appId];
-            }
-        }
-    }
-    [self performSelectorOnMainThread:@selector(sendCallBackForApp:) withObject:app waitUntilDone:NO];
-}
-
-- (void) sendCallBackForApp:(App*)app {
-    [_callback receivedAssetForApp:app];
-}
-
-@end

Limelight/ViewControllers/MainFrameViewController.h

@@ -12,7 +12,7 @@
 #import "StreamConfiguration.h"
 #import "UIComputerView.h"
 #import "UIAppView.h"
-#import "AppManager.h"
+#import "AppAssetManager.h"
 #import "SWRevealViewController.h"
 
 @interface MainFrameViewController : UICollectionViewController <DiscoveryCallback, PairCallback, HostCallback, AppCallback, AppAssetCallback, NSURLConnectionDelegate, SWRevealViewControllerDelegate>

Limelight/ViewControllers/MainFrameViewController.m

@@ -27,7 +27,7 @@
     NSData* _cert;
     NSString* _currentGame;
     DiscoveryManager* _discMan;
-    AppManager* _appManager;
+    AppAssetManager* _appManager;
     UIAlertView* _pairAlert;
     UIScrollView* hostScrollView;
     int currentPosition;
@@ -311,8 +311,8 @@ static StreamConfiguration* streamConfig;
     [CryptoManager generateKeyPairUsingSSl];
     _uniqueId = [CryptoManager getUniqueID];
     _cert = [CryptoManager readCertFromFile];
-    
-    _appManager = [[AppManager alloc] initWithCallback:self];
+
+    _appManager = [[AppAssetManager alloc] initWithCallback:self];
     
     // Only initialize the host picker list once
     if (hostList == nil) {