code.grnet.gr Git - pithos-macos/blob - pithos-macos/PithosSharingAccountsNode.m

   1 //
   2 //  PithosAccountNode.m
   3 //  pithos-macos
   4 //
   5 // Copyright 2011-2012 GRNET S.A. All rights reserved.
   6 //
   7 // Redistribution and use in source and binary forms, with or
   8 // without modification, are permitted provided that the following
   9 // conditions are met:
  10 //
  11 //   1. Redistributions of source code must retain the above
  12 //      copyright notice, this list of conditions and the following
  13 //      disclaimer.
  14 //
  15 //   2. Redistributions in binary form must reproduce the above
  16 //      copyright notice, this list of conditions and the following
  17 //      disclaimer in the documentation and/or other materials
  18 //      provided with the distribution.
  19 //
  20 // THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
  21 // OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  22 // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  23 // PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
  24 // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  27 // USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  28 // AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29 // LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  30 // ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  31 // POSSIBILITY OF SUCH DAMAGE.
  32 //
  33 // The views and conclusions contained in the software and
  34 // documentation are those of the authors and should not be
  35 // interpreted as representing official policies, either expressed
  36 // or implied, of GRNET S.A.
  37
  38 #import "PithosSharingAccountsNode.h"
  39 #import "PithosAccountNode.h"
  40 #import "ASIPithosRequest.h"
  41 #import "ASIPithos.h"
  42 #import "ASIPithosAccount.h"
  43 #import "ASIDownloadCache.h"
  44 #import "PithosUtilities.h"
  45 #import "PithosActivityFacility.h"
  46
  47 @implementation PithosSharingAccountsNode
  48 @synthesize pithos;
  49
  50 #pragma mark -
  51 #pragma mark Object Lifecycle
  52
  53 - (id)initWithPithos:(ASIPithos *)aPithos {
  54     if ((self = [super init])) {
  55         self.pithos = aPithos;
  56         self.sharingAccount = @"";
  57     }
  58     return self;
  59 }
  60
  61 - (void)dealloc {
  62     [sharingAccountsRequest clearDelegatesAndCancel];
  63     [sharingAccountsRequest release];
  64     [sharingAccounts release];
  65     [pithos release];
  66     [super dealloc];
  67 }
  68
  69 #pragma mark -
  70 #pragma mark Properties
  71
  72 - (void)setPithos:(ASIPithos *)aPithos {
  73     if (aPithos && ![aPithos isEqualTo:pithos]) {
  74         [pithos release];
  75         pithos = [aPithos retain];
  76         [url release];
  77         url = nil;
  78     }
  79 }
  80
  81 - (NSString *)url {
  82     if (url == nil)
  83         url = [pithos.storageURLPrefix copy];
  84     return url;
  85 }
  86
  87 - (NSArray *)children {
  88     @synchronized(self) {
  89         switch (freshness) {
  90             case PithosNodeStateFresh:
  91                 break;
  92             case PithosNodeStateRefreshNeeded:
  93                 freshness = PithosNodeStateRefreshing;
  94                 sharingAccountsRequest = [[ASIPithosRequest listSharingAccountsRequestWithPithos:pithos limit:0 marker:nil] retain];
  95                 sharingAccountsRequest.delegate = self;
  96                 sharingAccountsRequest.didFinishSelector = @selector(performRequestFinishedDelegateInBackground:);
  97                 sharingAccountsRequest.didFailSelector = @selector(performRequestFailedDelegateInBackground:);
  98                 sharingAccountsRequest.userInfo = [NSMutableDictionary dictionaryWithObjectsAndKeys:
  99                                                    [NSNumber numberWithInteger:NSOperationQueuePriorityVeryHigh], @"priority",
 100                                                    [NSNumber numberWithUnsignedInteger:10], @"retries",
 101                                                    NSStringFromSelector(@selector(sharingAccountsRequestFinished:)), @"didFinishSelector",
 102                                                    NSStringFromSelector(@selector(sharingAccountsRequestFailed:)), @"didFailSelector",
 103                                                    nil];
 104                 if (!forcedRefresh)
 105                     sharingAccountsRequest.downloadCache = [ASIDownloadCache sharedCache];
 106                 [[PithosUtilities prepareRequest:sharingAccountsRequest priority:NSOperationQueuePriorityVeryHigh] startAsynchronous];
 107                 break;
 108             case PithosNodeStateRefreshing:
 109                 break;
 110             case PithosNodeStateRefreshFinished:
 111                 if (newChildren) {
 112                     [children release];
 113                     children = newChildren;
 114                     newChildren = nil;
 115                 }
 116                 freshness = PithosNodeStateFresh;
 117             default:
 118                 break;
 119         }
 120         return children;
 121     }
 122 }
 123
 124 - (NSString *)displayName {
 125     if (displayName == nil)
 126         return [NSString stringWithString:@"sharing accounts"];
 127     return [[displayName copy] autorelease];
 128 }
 129
 130 #pragma mark -
 131 #pragma mark ASIHTTPRequestDelegate
 132
 133 - (void)sharingAccountsRequestFailed:(ASIPithosRequest *)request {
 134     NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
 135     NSUInteger retries = [[sharingAccountsRequest.userInfo objectForKey:@"retries"] unsignedIntegerValue];
 136     if (retries > 0) {
 137         ASIPithosRequest *newSharingAccountsRequest = (ASIPithosRequest *)[PithosUtilities copyRequest:sharingAccountsRequest];
 138         [(NSMutableDictionary *)(newSharingAccountsRequest.userInfo)setObject:[NSNumber numberWithUnsignedInteger:(--retries)] forKey:@"retries"];
 139         [sharingAccountsRequest release];
 140         sharingAccountsRequest = newSharingAccountsRequest;
 141         [[PithosUtilities prepareRequest:sharingAccountsRequest priority:[[sharingAccountsRequest.userInfo objectForKey:@"priority"] integerValue]] startAsynchronous];
 142     } else {
 143         NSString *message;
 144         NSError *error = [sharingAccountsRequest error];
 145         if (error)
 146             message = [NSString stringWithFormat:@"Sharing accounts listing failed: %@", error];
 147         else
 148             message = [NSString stringWithFormat:@"Sharing accounts listing failed: (%d) %@",
 149                        sharingAccountsRequest.responseStatusCode, sharingAccountsRequest.responseStatusMessage];
 150         dispatch_async(dispatch_get_main_queue(), ^{
 151             [[PithosActivityFacility defaultPithosActivityFacility] startAndEndActivityWithType:PithosActivityOther message:message];
 152         });
 153         [newChildren release];
 154         newChildren = nil;
 155         [sharingAccountsRequest release];
 156         sharingAccountsRequest = nil;
 157         [sharingAccounts release];
 158         sharingAccounts = nil;
 159         forcedRefresh = NO;
 160         @synchronized(self) {
 161             freshness = PithosNodeStateRefreshNeeded;
 162         }
 163     }
 164     [pool drain];
 165 }
 166
 167 - (void)sharingAccountsRequestFinished:(ASIPithosRequest *)request {
 168     NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
 169     NSLog(@"List sharing accounts finished: %@", [sharingAccountsRequest url]);
 170     NSLog(@"Cached: %d", [sharingAccountsRequest didUseCachedResponse]);
 171     if (sharingAccountsRequest.responseStatusCode == 200) {
 172         NSArray *someSharingAccounts = [sharingAccountsRequest sharingAccounts];
 173         if (sharingAccounts == nil) {
 174             sharingAccounts = [[NSMutableArray alloc] initWithArray:someSharingAccounts];
 175         } else {
 176             [sharingAccounts addObjectsFromArray:someSharingAccounts];
 177         }
 178         if ([someSharingAccounts count] < 10000) {
 179             if (!sharingAccountsRequest.didUseCachedResponse || ([sharingAccounts count] != [someSharingAccounts count]) || !children) {
 180                 // Save new children
 181                 NSLog(@"using newChildren");
 182                 newChildren = [[NSMutableArray alloc] init];
 183                 NSMutableIndexSet *keptNodes = [NSMutableIndexSet indexSet];
 184                 for (ASIPithosAccount *account in sharingAccounts) {
 185                     if (![account.name isEqualToString:pithos.authUser]) {
 186                         PithosAccountNode *node = [[[PithosAccountNode alloc] init] autorelease];
 187                         node.parent = self;
 188                         node.shared = shared;
 189                         node.sharingAccount = account.name;
 190                         if (children) {
 191                             NSUInteger oldIndex = [children indexOfObject:node];
 192                             if (oldIndex != NSNotFound) {
 193                                 // Use the same pointer value, if possible
 194                                 node = [children objectAtIndex:oldIndex];
 195                                 [keptNodes addIndex:oldIndex];
 196                             }
 197                         }
 198                         [newChildren addObject:node];
 199                     }
 200                 }
 201                 [[children objectsAtIndexes:
 202                   [[NSIndexSet indexSetWithIndexesInRange:NSMakeRange(0, [children count])] indexesPassingTest:^(NSUInteger idx, BOOL *stop){
 203                     if ([keptNodes containsIndex:idx])
 204                         return NO;
 205                     return YES;
 206                 }]] makeObjectsPerformSelector:@selector(pithosNodeWillBeRemoved)];
 207             }
 208             // Else cache was used and all results were fetched during this request, so existing children can be reused
 209             [sharingAccountsRequest release];
 210             sharingAccountsRequest = nil;
 211             [sharingAccounts release];
 212             sharingAccounts = nil;
 213             forcedRefresh = NO;
 214             @synchronized(self) {
 215                 freshness = PithosNodeStateRefreshFinished;
 216             }
 217             // Notify observers that children are updated
 218             [[NSNotificationCenter defaultCenter] postNotificationName:@"PithosSharingAccountsNodeChildrenUpdated" object:self];
 219         } else {
 220             [sharingAccountsRequest release];
 221             // Do an additional request to fetch more objects
 222             sharingAccountsRequest = [[ASIPithosRequest listSharingAccountsRequestWithPithos:pithos
 223                                                                                        limit:0
 224                                                                                       marker:[[someSharingAccounts lastObject] name]] retain];
 225             sharingAccountsRequest.delegate = self;
 226             sharingAccountsRequest.didFinishSelector = @selector(performRequestFinishedDelegateInBackground:);
 227             sharingAccountsRequest.didFailSelector = @selector(performRequestFailedDelegateInBackground:);
 228             sharingAccountsRequest.userInfo = [NSMutableDictionary dictionaryWithObjectsAndKeys:
 229                                                [NSNumber numberWithInteger:NSOperationQueuePriorityVeryHigh], @"priority",
 230                                                [NSNumber numberWithUnsignedInteger:10], @"retries",
 231                                                NSStringFromSelector(@selector(sharingAccountsRequestFinished:)), @"didFinishSelector",
 232                                                NSStringFromSelector(@selector(sharingAccountsRequestFailed:)), @"didFailSelector",
 233                                                nil];
 234             if (!forcedRefresh)
 235                 sharingAccountsRequest.downloadCache = [ASIDownloadCache sharedCache];
 236             [[PithosUtilities prepareRequest:sharingAccountsRequest priority:NSOperationQueuePriorityVeryHigh] startAsynchronous];
 237         }
 238     } else {
 239         [self sharingAccountsRequestFailed:sharingAccountsRequest];
 240     }
 241     [pool drain];
 242 }
 243
 244 @end