/ModelManager-Broken.m
Created Oct 29, 2012
BROKEN example of concurrent code. This is for comparison ONLY
| // | |
| // ModelManager.m | |
| // ThreadingHell | |
| // | |
| // Created by Cory D. Wiles on 10/19/12. | |
| // Copyright (c) 2012 Cory D. Wiles. All rights reserved. | |
| // | |
| #import "ModelManager.h" | |
| #import "NSMutableString+CoryAdditions.h" | |
| static NSString* const wsRequestErrorDomain = @"net.epb.imf.im3.request.error"; | |
| static char const *imfQueueName = "net.epb.imf.im3.queue"; | |
| static dispatch_queue_t _imfDispatchQueue; | |
| @implementation ModelManager | |
| + (void)initialize { | |
| _imfDispatchQueue = dispatch_queue_create(imfQueueName, DISPATCH_QUEUE_CONCURRENT); | |
| } | |
| + (ModelManager *)sharedManager { | |
| static ModelManager *_sharedClient = nil; | |
| static dispatch_once_t onceToken; | |
| dispatch_once(&onceToken, ^{ | |
| _sharedClient = [[self alloc] init]; | |
| }); | |
| return _sharedClient; | |
| } | |
| - (void)getAccountDetailsForAccountNumber:(NSString* )accountNumber | |
| completionBlock:(IMFRequestCompletionBlock)completion { | |
| dispatch_sync(_imfDispatchQueue, ^{ | |
| NSLog(@"trying to fetch information for details"); | |
| NSMutableString *details = [NSMutableString randomStringWithCapacity:10]; | |
| [details appendFormat:@" details"]; | |
| NSLog(@"details string: %@", details); | |
| dispatch_async(dispatch_get_main_queue(), ^{ | |
| if (completion) { | |
| if (details) { | |
| completion(details, YES, nil); | |
| } else { | |
| NSString *errorMessage = [NSString stringWithFormat:@"Failed getting details for account: %@", accountNumber]; | |
| NSError *failerror = [NSError errorWithDomain:wsRequestErrorDomain | |
| code:1002 | |
| userInfo:[NSDictionary dictionaryWithObject:NSLocalizedString(errorMessage, nil) | |
| forKey:NSLocalizedDescriptionKey]]; | |
| completion(nil, NO, failerror); | |
| } | |
| } | |
| }); | |
| }); | |
| } | |
| - (void)getAccountListMetaInformation:(IMFRequestCompletionBlock)completion { | |
| __block NSMutableDictionary *accountList = [NSMutableDictionary new]; | |
| __block NSMutableArray *accountDetails = [NSMutableArray new]; | |
| NSArray *loginResponse = @[@"account1", @"account2"]; | |
| if (loginResponse) { | |
| NSLog(@"inside loginResponse"); | |
| dispatch_sync(_imfDispatchQueue, ^{ | |
| [loginResponse enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop){ | |
| NSLog(@"inside account loop for obj: %@", obj); | |
| [self getAccountDetailsForAccountNumber:obj completionBlock:^(id obj, BOOL success, NSError *error) { | |
| if (success) { | |
| NSLog(@"success account looop"); | |
| [accountDetails addObject:obj]; | |
| } else { | |
| NSLog(@"failed to get any accont details from account: %@ %@", obj, [error localizedDescription]); | |
| } | |
| }]; | |
| }]; | |
| dispatch_async(dispatch_get_main_queue(), ^{ | |
| NSLog(@"should be updating main queue"); | |
| if (completion) { | |
| if (accountDetails.count) { | |
| completion(accountList, YES, nil); | |
| } else { | |
| NSString *errorMessage = @"There was error getting your accounts. Please login again."; | |
| NSError *failerror = [NSError errorWithDomain:wsRequestErrorDomain | |
| code:1003 | |
| userInfo:[NSDictionary dictionaryWithObject:NSLocalizedString(errorMessage, nil) | |
| forKey:NSLocalizedDescriptionKey]]; | |
| completion(nil, NO, failerror); | |
| } | |
| } | |
| }); | |
| }); | |
| } | |
| } | |
| @end |
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