Synnefo » Pithos MacOS Client

//

//  PithosAccountNode.m

//  pithos-macos

//

// Copyright 2011-2012 GRNET S.A. All rights reserved.

//

// Redistribution and use in source and binary forms, with or

// without modification, are permitted provided that the following

// conditions are met:

// 

//   1. Redistributions of source code must retain the above

//      copyright notice, this list of conditions and the following

//      disclaimer.

// 

//   2. Redistributions in binary form must reproduce the above

//      copyright notice, this list of conditions and the following

//      disclaimer in the documentation and/or other materials

//      provided with the distribution.

// 

// THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

// OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

// USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

// AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

// POSSIBILITY OF SUCH DAMAGE.

// 

// The views and conclusions contained in the software and

// documentation are those of the authors and should not be

// interpreted as representing official policies, either expressed

// or implied, of GRNET S.A.

#import "PithosSharingAccountsNode.h"

#import "PithosAccountNode.h"

#import "ASIPithosRequest.h"

#import "ASIPithos.h"

#import "ASIPithosAccount.h"

#import "ASIDownloadCache.h"

#import "PithosUtilities.h"

#import "PithosActivityFacility.h"

@implementation PithosSharingAccountsNode

@synthesize pithos;

#pragma mark -

#pragma mark Object Lifecycle

- (id)initWithPithos:(ASIPithos *)aPithos {

    if ((self = [super init])) {

        pithos = aPithos;

        self.sharingAccount = @"";

    }

    return self;

}

- (void)dealloc {

    [sharingAccountsRequest clearDelegatesAndCancel];

}

#pragma mark -

#pragma mark Properties

- (void)setPithos:(ASIPithos *)aPithos {

    if (aPithos && ![aPithos isEqualTo:pithos]) {

        pithos = aPithos;

        url = nil;

        [sharingAccountsRequest clearDelegatesAndCancel];

        sharingAccountsRequest = nil;

        reset = YES;

    }

}

- (NSString *)url {

    if (url == nil) 

        url = [pithos.storageURLPrefix copy];

    return url;

}

- (NSArray *)children {

    @synchronized(self) {

        if (reset) {

            [sharingAccountsRequest clearDelegatesAndCancel];

            sharingAccountsRequest = nil;

            children = nil;

            newChildren = nil;

            freshness = PithosNodeStateRefreshNeeded;

            forcedRefresh = YES;

            reset = NO;

            [self postChildrenUpdatedNotificationName];

        }

        switch (freshness) {

            case PithosNodeStateFresh:

                break;

            case PithosNodeStateRefreshNeeded:

                freshness = PithosNodeStateRefreshing;

                sharingAccountsRequest = [ASIPithosRequest listSharingAccountsRequestWithPithos:pithos limit:0 marker:nil];

                sharingAccountsRequest.delegate = self;

                sharingAccountsRequest.didFinishSelector = @selector(performRequestFinishedDelegateInBackground:);

                sharingAccountsRequest.didFailSelector = @selector(performRequestFailedDelegateInBackground:);

                sharingAccountsRequest.userInfo = [NSMutableDictionary dictionaryWithObjectsAndKeys:

                                                   [NSNumber numberWithInteger:NSOperationQueuePriorityVeryHigh], @"priority", 

                                                   [NSNumber numberWithUnsignedInteger:10], @"retries", 

                                                   NSStringFromSelector(@selector(sharingAccountsRequestFinished:)), @"didFinishSelector", 

                                                   NSStringFromSelector(@selector(sharingAccountsRequestFailed:)), @"didFailSelector", 

                                                   nil];

//                if (!forcedRefresh)

//                    sharingAccountsRequest.downloadCache = [ASIDownloadCache sharedCache];

                [[PithosUtilities prepareRequest:sharingAccountsRequest priority:NSOperationQueuePriorityVeryHigh] startAsynchronous];

                break;

            case PithosNodeStateRefreshing:

                break;

            case PithosNodeStateRefreshFinished:

                if (newChildren) {

                    children = newChildren;

                    newChildren = nil;

                }

                freshness = PithosNodeStateFresh;

            default:

                break;

        }

        return children;

    }

}

- (NSString *)displayName {

    if (displayName == nil)

        return @"sharing accounts";

    return [displayName copy];

}

#pragma mark -

#pragma mark ASIHTTPRequestDelegate

- (void)sharingAccountsRequestFailed:(ASIPithosRequest *)request {

    @autoreleasepool {

        NSString *message;

        NSError *error = [sharingAccountsRequest error];

        if (error)

            message = [NSString stringWithFormat:@"Sharing accounts listing %@ failed: %@", 

                       sharingAccountsRequest.url, [error localizedDescription]];

        else

            message = [NSString stringWithFormat:@"Sharing accounts listing %@ failed: (%d) %@", 

                       sharingAccountsRequest.url, sharingAccountsRequest.responseStatusCode, sharingAccountsRequest.responseStatusMessage];

        dispatch_async(dispatch_get_main_queue(), ^{

            [[PithosActivityFacility defaultPithosActivityFacility] startAndEndActivityWithType:PithosActivityOther message:message];

        });

        NSUInteger retries = [[sharingAccountsRequest.userInfo objectForKey:@"retries"] unsignedIntegerValue];

        if (retries > 0) {

            ASIPithosRequest *newSharingAccountsRequest = (ASIPithosRequest *)[PithosUtilities copyRequest:sharingAccountsRequest];

            [(NSMutableDictionary *)(newSharingAccountsRequest.userInfo)setObject:[NSNumber numberWithUnsignedInteger:(--retries)] forKey:@"retries"];

            sharingAccountsRequest = newSharingAccountsRequest;

            [[PithosUtilities prepareRequest:sharingAccountsRequest priority:[[sharingAccountsRequest.userInfo objectForKey:@"priority"] integerValue]] startAsynchronous];

        } else {

            newChildren = nil;

            sharingAccountsRequest = nil;

            sharingAccounts = nil;

            forcedRefresh = NO;

            @synchronized(self) {

                freshness = PithosNodeStateRefreshNeeded;

            }

        }

    }

}

- (void)sharingAccountsRequestFinished:(ASIPithosRequest *)request {

    @autoreleasepool {

        DLog(@"List sharing accounts finished: %@", [sharingAccountsRequest url]);

        DLog(@"Cached: %d", [sharingAccountsRequest didUseCachedResponse]);

        if (sharingAccountsRequest.responseStatusCode == 200) {

            NSArray *someSharingAccounts = [sharingAccountsRequest sharingAccounts];

            if (sharingAccounts == nil) {

                sharingAccounts = [[NSMutableArray alloc] initWithArray:someSharingAccounts];

            } else {

                [sharingAccounts addObjectsFromArray:someSharingAccounts];

            }

            if ([someSharingAccounts count] < 10000) {

                if (!sharingAccountsRequest.didUseCachedResponse || ([sharingAccounts count] != [someSharingAccounts count]) || !children) {

                    // Save new children

                    DLog(@"using newChildren");

                    newChildren = [[NSMutableArray alloc] init];

                    NSMutableIndexSet *keptNodes = [NSMutableIndexSet indexSet];

                    for (ASIPithosAccount *account in sharingAccounts) {

                        if (![account.name isEqualToString:pithos.authUser]) {

                            PithosAccountNode *node = [[PithosAccountNode alloc] initWithPithos:pithos];

                            node.parent = self;

                            node.shared = shared;

                            node.sharingAccount = account.name;

                            node.inheritChildrenUpdatedNotificationName = inheritChildrenUpdatedNotificationName;

                            if (children) {

                                NSUInteger oldIndex = [children indexOfObject:node];

                                if (oldIndex != NSNotFound) {

                                    // Use the same pointer value, if possible

                                    node = [children objectAtIndex:oldIndex];

                                    [keptNodes addIndex:oldIndex];

                                }

                            }

                            [newChildren addObject:node];

                        }

                    }

                    [[children objectsAtIndexes:

                      [[NSIndexSet indexSetWithIndexesInRange:NSMakeRange(0, [children count])] indexesPassingTest:^(NSUInteger idx, BOOL *stop){

                        if ([keptNodes containsIndex:idx])

                            return NO;

                        return YES;

                    }]] makeObjectsPerformSelector:@selector(pithosNodeWillBeRemoved)];

                }

                // Else cache was used and all results were fetched during this request, so existing children can be reused

                sharingAccountsRequest = nil;

                sharingAccounts = nil;

                forcedRefresh = NO;

                @synchronized(self) {

                    freshness = PithosNodeStateRefreshFinished;

                }

                [self postChildrenUpdatedNotificationName];

            } else {

                // Do an additional request to fetch more objects

                sharingAccountsRequest = [ASIPithosRequest listSharingAccountsRequestWithPithos:pithos 

                                                                                           limit:0 

                                                                                          marker:[[someSharingAccounts lastObject] name]];

                sharingAccountsRequest.delegate = self;

                sharingAccountsRequest.didFinishSelector = @selector(performRequestFinishedDelegateInBackground:);

                sharingAccountsRequest.didFailSelector = @selector(performRequestFailedDelegateInBackground:);

                sharingAccountsRequest.userInfo = [NSMutableDictionary dictionaryWithObjectsAndKeys:

                                                   [NSNumber numberWithInteger:NSOperationQueuePriorityVeryHigh], @"priority", 

                                                   [NSNumber numberWithUnsignedInteger:10], @"retries", 

                                                   NSStringFromSelector(@selector(sharingAccountsRequestFinished:)), @"didFinishSelector", 

                                                   NSStringFromSelector(@selector(sharingAccountsRequestFailed:)), @"didFailSelector", 

                                                   nil];

//              if (!forcedRefresh)

//                  sharingAccountsRequest.downloadCache = [ASIDownloadCache sharedCache];

                [[PithosUtilities prepareRequest:sharingAccountsRequest priority:NSOperationQueuePriorityVeryHigh] startAsynchronous];

            }

        } else {

            [self sharingAccountsRequestFailed:sharingAccountsRequest];

        }

    }

}

@end