Synnefo » Pithos MacOS Client

//

//  PithosContainerNode.m

//  pithos-macos

//

// Copyright 2011 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 "PithosContainerNode.h"

#import "PithosObjectNode.h"

#import "PithosSubdirNode.h"

#import "ASIPithosContainerRequest.h"

#import "ASIPithosContainer.h"

#import "ASIPithosObject.h"

#import "ASIDownloadCache.h"

#import "PithosUtilities.h"

#import "PithosContainerNodeInfoController.h"

static NSImage *sharedIcon = nil;

@implementation PithosContainerNode

@synthesize pithosContainer, prefix;

@synthesize policyVersioning, policyQuota;

+ (void)initialize {

	if (self == [PithosContainerNode class])

        sharedIcon = [[[NSWorkspace sharedWorkspace] iconForFileType:NSFileTypeForHFSTypeCode(kGenericHardDiskIcon)] retain];

}

#pragma mark -

#pragma mark Object Lifecycle

- (id)initWithPithosContainer:(ASIPithosContainer *)aPithosContainer icon:(NSImage *)anIcon {

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

        self.pithosContainer = aPithosContainer;

        prefix = nil;

        self.icon = anIcon;

        childrenUpdatedNotificationName = @"PithosContainerNodeChildrenUpdated";

    }

    return self;

}

- (id)initWithPithosContainer:(ASIPithosContainer *)aPithosContainer {

    return [self initWithPithosContainer:aPithosContainer icon:nil];

}

- (id)initWithContainerName:(NSString *)aContainerName icon:(NSImage *)anIcon {

    ASIPithosContainer *container = [ASIPithosContainer container];

    container.name = aContainerName;

    return [self initWithPithosContainer:container icon:anIcon];

}

- (id)initWithContainerName:(NSString *)aContainerName {

    return [self initWithContainerName:aContainerName icon:nil];

}

- (void)dealloc {

    [containerRequest clearDelegatesAndCancel];

    [containerRequest release];

    [refreshMetadataContainerRequest clearDelegatesAndCancel];

    [refreshMetadataContainerRequest release];

    [applyMetadataContainerRequest clearDelegatesAndCancel];

    [applyMetadataContainerRequest release];

    [policyQuota release];

    [policyVersioning release];

    [childrenUpdatedNotificationName release];

    [prefix release];

    [objects release];

    [pithosContainer release];

    [super dealloc];

}

#pragma mark -

#pragma mark Properties

- (NSString *)url {

    if (url == nil)

        url = [[NSString alloc] initWithFormat:@"%@/%@%@", 

               (sharingAccount ? [ASIPithosRequest storageURLWithAuthUser:sharingAccount] : [ASIPithosRequest storageURL]), 

               pithosContainer.name, 

               (shared ? @"?shared" : @"")];

    return url;

}

- (NSArray *)children {

    @synchronized(self) {

        switch (freshness) {

            case PithosNodeStateFresh:

                break;

            case PithosNodeStateRefreshNeeded:

                freshness = PithosNodeStateRefreshing;

                containerRequest = [[ASIPithosContainerRequest listObjectsRequestWithContainerName:pithosContainer.name 

                                                                                             limit:0 

                                                                                            marker:nil 

                                                                                            prefix:prefix 

                                                                                         delimiter:@"/" 

                                                                                              path:nil 

                                                                                              meta:nil 

                                                                                            shared:shared 

                                                                                             until:nil] retain];

                if (sharingAccount)

                    [containerRequest setRequestUserFromDefaultTo:sharingAccount];

                containerRequest.delegate = self;

                containerRequest.didFinishSelector = @selector(containerRequestFinished:);

                containerRequest.didFailSelector = @selector(containerRequestFailed:);

                if (!forcedRefresh)

                    containerRequest.downloadCache = [ASIDownloadCache sharedCache];

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

                break;

            case PithosNodeStateRefreshing:

                break;

            case PithosNodeStateRefreshFinished:

                if (newChildren) {

                    [children release];

                    children = newChildren;

                    newChildren = nil;

                }

                freshness = PithosNodeStateFresh;

            default:

                break;

        }

        return children;

    }

}

- (NSString *)displayName {

    return [[pithosContainer.name copy] autorelease];

}

- (void)setDisplayName:(NSString *)aDisplayName {

}

- (NSImage *)icon {

    if (icon == nil) {

        if ([pithosContainer.name isEqualToString:@"pithos"])

            icon = [[[NSWorkspace sharedWorkspace] iconForFileType:NSFileTypeForHFSTypeCode(kToolbarHomeIcon)] retain];

        else if ([pithosContainer.name isEqualToString:@"trash"])

            icon = [[[NSWorkspace sharedWorkspace] iconForFileType:NSFileTypeForHFSTypeCode(kFullTrashIcon)] retain];

        else

            icon = [sharedIcon retain];

    }

    return icon;

}

- (void)setPithosContainer:(ASIPithosContainer *)aPithosContainer {

    if (![pithosContainer isEqualTo:aPithosContainer]) {

        [pithosContainer release];

        pithosContainer = [aPithosContainer retain];

    }

    if (pithosContainer.policy) {

        self.policyVersioning = [pithosContainer.policy objectForKey:@"versioning"];

        self.policyQuota = [NSNumber numberWithLongLong:[[pithosContainer.policy objectForKey:@"quota"] longLongValue]];

    } else {

        self.policyVersioning = @"manual";

        self.policyQuota = [NSNumber numberWithLongLong:0];

    }

}

#pragma mark -

#pragma mark ASIHTTPRequestDelegate

- (void)containerRequestFinished:(ASIPithosContainerRequest *)request {

    NSLog(@"URL: %@", [containerRequest url]);

    NSLog(@"cached: %d", [containerRequest didUseCachedResponse]);

    if ((pithosContainer.blockHash == nil) || (pithosContainer.blockSize == 0)) {

        pithosContainer.blockHash = [containerRequest blockHash];

        pithosContainer.blockSize = [containerRequest blockSize];

    }

    NSArray *someObjects = [containerRequest objects];

    if (objects == nil) {

        objects = [[NSMutableArray alloc] initWithArray:someObjects];

    } else {

        [objects addObjectsFromArray:someObjects];

    }

    if ([someObjects count] < 10000) {

        if (!containerRequest.didUseCachedResponse || ([objects count] != [someObjects count]) || !children) {

            // Save new children

            NSLog(@"using newChildren");

            newChildren = [[NSMutableArray alloc] init];

            NSArray *objectNames = [objects valueForKey:@"name"];

            NSMutableIndexSet *keptNodes = [NSMutableIndexSet indexSet];

            BOOL isSubdirNode = ([self class] == [PithosSubdirNode class]);

            for (ASIPithosObject *object in objects) {

                if (!isSubdirNode || 

                    [object.name hasPrefix:[((PithosSubdirNode *)self).prefix stringByAppendingString:@"/"]]) {

                    // The check above removes false objects due to trailing slash or same prefix

                    if (object.subdir) {

                        NSUInteger sameNameObjectIndex = [objectNames indexOfObject:[object.name substringToIndex:([object.name length] - 1)]];

                        if ((sameNameObjectIndex == NSNotFound) || 

                            ![PithosUtilities isContentTypeDirectory:[[objects objectAtIndex:sameNameObjectIndex] contentType]]) {

                            PithosSubdirNode *node = [[[PithosSubdirNode alloc] initWithPithosContainer:pithosContainer pithosObject:object] autorelease];

                            node.parent = self;

                            node.shared = shared;

                            node.sharingAccount = sharingAccount;

                            if (children) {

                                NSUInteger oldIndex = [children indexOfObject:node];

                                if (oldIndex != NSNotFound) {

                                    // Use the same pointer value, if possible

                                    node = [children objectAtIndex:oldIndex];

                                    node.pithosContainer = pithosContainer;

                                    node.pithosObject = object;

                                    [keptNodes addIndex:oldIndex];

                                }

                            }

                            if (sharingAccount)

                                node.pithosObject.allowedTo = [NSString stringWithString:@"read"];

                            [newChildren addObject:node];

                        }

                    } else if ([PithosUtilities isContentTypeDirectory:object.contentType]) {

                        PithosSubdirNode *node = [[[PithosSubdirNode alloc] initWithPithosContainer:pithosContainer pithosObject:object] autorelease];

                        node.parent = self;

                        node.shared = shared;

                        node.sharingAccount = sharingAccount;

                        if (children) {

                            NSUInteger oldIndex = [children indexOfObject:node];

                            if (oldIndex != NSNotFound) {

                                // Use the same pointer value, if possible

                                node = [children objectAtIndex:oldIndex];

                                node.pithosContainer = pithosContainer;

                                node.pithosObject = object;

                                [keptNodes addIndex:oldIndex];

                            }

                        }

                        [newChildren addObject:node];

                    } else {

                        PithosObjectNode *node = [[[PithosObjectNode alloc] initWithPithosContainer:pithosContainer pithosObject:object] autorelease];

                        node.parent = self;

                        node.shared = shared;

                        node.sharingAccount = sharingAccount;

                        if (children) {

                            NSUInteger oldIndex = [children indexOfObject:node];

                            if (oldIndex != NSNotFound) {

                                // Use the same pointer value, if possible

                                node = [children objectAtIndex:oldIndex];

                                node.pithosContainer = pithosContainer;

                                node.pithosObject = object;

                                [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

        [containerRequest release];

        containerRequest = nil;

        [objects release];

        objects = nil;

        forcedRefresh = NO;

        @synchronized(self) {

            freshness = PithosNodeStateRefreshFinished;

        }

        // Notify observers that children are updated

        [[NSNotificationCenter defaultCenter] postNotificationName:childrenUpdatedNotificationName object:self];

    } else {

        [containerRequest release];

        // Do an additional request to fetch more objects

        containerRequest = [[ASIPithosContainerRequest listObjectsRequestWithContainerName:pithosContainer.name 

                                                                                     limit:0 

                                                                                    marker:[[someObjects lastObject] name] 

                                                                                    prefix:prefix 

                                                                                 delimiter:@"/" 

                                                                                      path:nil 

                                                                                      meta:nil 

                                                                                    shared:shared 

                                                                                     until:nil] retain];

        if (sharingAccount)

            [containerRequest setRequestUserFromDefaultTo:sharingAccount];

        containerRequest.delegate = self;

        if (!forcedRefresh)

        containerRequest.downloadCache = [ASIDownloadCache sharedCache];

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

    }

}

- (void)containerRequestFailed:(ASIPithosContainerRequest *)request {

    [PithosUtilities httpRequestErrorAlertWithRequest:request];

    [newChildren release];

    newChildren = nil;

    [containerRequest release];

    containerRequest = nil;

    [objects release];

    objects = nil;

    forcedRefresh = NO;

    @synchronized(self) {

        freshness = PithosNodeStateRefreshNeeded;

    }

}

- (void)containerMetadataRequestFinished:(ASIPithosContainerRequest *)request {

    NSLog(@"URL: %@", [request url]);

    NSLog(@"cached: %d", [request didUseCachedResponse]);

    if ([request isEqualTo:applyMetadataContainerRequest]) {

        @synchronized(self) {

            [applyMetadataContainerRequest release];

            applyMetadataContainerRequest = nil;

        }

        [self refreshInfo];

    } else if ([request isEqualTo:refreshMetadataContainerRequest]) {

        [[pithosNodeInfoController window] makeFirstResponder:nil];

        self.pithosContainer = [refreshMetadataContainerRequest container];

        @synchronized(self) {

            [refreshMetadataContainerRequest release];

            refreshMetadataContainerRequest = nil;

        }

    }

}

- (void)containerMetadataRequestFailed:(ASIPithosContainerRequest *)request {

    if ([request isEqualTo:applyMetadataContainerRequest]) {

        [PithosUtilities httpRequestErrorAlertWithRequest:applyMetadataContainerRequest];

        @synchronized(self) {

            [applyMetadataContainerRequest release];

            applyMetadataContainerRequest = nil;

        }

    } else if ([request isEqualTo:refreshMetadataContainerRequest]) {

        [PithosUtilities httpRequestErrorAlertWithRequest:refreshMetadataContainerRequest];

        @synchronized(self) {

            [refreshMetadataContainerRequest release];

            refreshMetadataContainerRequest = nil;

        }

    }

}

#pragma mark -

#pragma mark Info

- (void)applyInfo {

    @synchronized(self) {

        if (applyMetadataContainerRequest == nil) {

            [[pithosNodeInfoController window] makeFirstResponder:nil];

            applyMetadataContainerRequest = [[ASIPithosContainerRequest updateContainerMetadataRequestWithContainerName:pithosContainer.name 

                                                                                                                 policy:[NSDictionary dictionaryWithObjectsAndKeys:

                                                                                                                         policyVersioning, @"versioning", 

                                                                                                                         [policyQuota stringValue], @"quota", 

                                                                                                                         nil] 

                                                                                                               metadata:pithosContainer.metadata 

                                                                                                                 update:NO] retain];

            applyMetadataContainerRequest.delegate = self;

            applyMetadataContainerRequest.didFinishSelector = @selector(containerMetadataRequestFinished:);

            applyMetadataContainerRequest.didFailSelector = @selector(containerMetadataRequestFailed:);

            [[PithosUtilities prepareRequest:applyMetadataContainerRequest priority:NSOperationQueuePriorityHigh] startAsynchronous];

        }

    }

}

- (void)refreshInfo {

    @synchronized(self) {

        if (refreshMetadataContainerRequest == nil) {

            refreshMetadataContainerRequest = [[ASIPithosContainerRequest containerMetadataRequestWithContainerName:pithosContainer.name] retain];

            refreshMetadataContainerRequest.delegate = self;

            refreshMetadataContainerRequest.didFinishSelector = @selector(containerMetadataRequestFinished:);

            refreshMetadataContainerRequest.didFailSelector = @selector(containerMetadataRequestFailed:);

            refreshMetadataContainerRequest.downloadCache = [ASIDownloadCache sharedCache];

            [[PithosUtilities prepareRequest:refreshMetadataContainerRequest priority:NSOperationQueuePriorityHigh] startAsynchronous];

        }

    }

}

#pragma mark -

#pragma mark Actions

- (void)showPithosNodeInfo:(id)sender {

    if (!pithosNodeInfoController)

        pithosNodeInfoController = [[PithosContainerNodeInfoController alloc] initWithPithosNode:self];

    [pithosNodeInfoController showWindow:sender];

    [[pithosNodeInfoController window] makeKeyAndOrderFront:sender];

    [NSApp activateIgnoringOtherApps:YES];

}

@end