Synnefo » Pithos MacOS Client

//

//  PithosActivityFacility.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 "PithosActivityFacility.h"

static PithosActivityFacility *defaultPithosActivityFacility = nil;

@implementation PithosActivityFacility

@synthesize delegate;

#pragma mark -

#pragma mark - Singleton

+ (id)defaultPithosActivityFacility {

	@synchronized(self) {

		if (!defaultPithosActivityFacility)

			[[self alloc] init]; // Assignment not done here

	}

	return defaultPithosActivityFacility;

}

+ (id)allocWithZone:(NSZone *)zone {

    @synchronized(self) {

        if (!defaultPithosActivityFacility) {

            defaultPithosActivityFacility = [super allocWithZone:zone];

            return defaultPithosActivityFacility;

        }

    }

    return nil;

}

- (id)copyWithZone:(NSZone *)zone {

    return self;

}

- (id)retain {

    return self;

}

- (NSUInteger)retainCount {

    return UINT_MAX; // Can not be released

}

- (void)release {

    // Do nothing

}

- (id)autorelease {

    return self;

}

#pragma mark -

#pragma mark Object Lifecycle

- (id)init {

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

        [self reset];

    }

    return self;

}

- (void)dealloc {

    [timer invalidate];

    [timer release];

    [runningActivities release];

    [endingActivities release];

    [super dealloc];

}

- (void)reset {

    @synchronized(self) {

        [timer invalidate];

        [timer release];

        [runningActivities release];

        runningActivities = [[NSMutableArray alloc] init];

        [endingActivities release];

        endingActivities = [[NSMutableArray alloc] init];

        totalUploadBytes = 0;

        currentUploadBytes = 0;

        totalDownloadBytes = 0;

        currentDownloadBytes = 0;

        pickedRunning = NO;

        timer = [[NSTimer scheduledTimerWithTimeInterval:0.5 target:self selector:@selector(update:) userInfo:nil repeats:YES] retain];

    }

}

- (NSString *)description {

    return [NSString stringWithFormat:@"running activities: %lu, ending activities: %lu, totalUploadBytes: %lu, currentUploadBytes: %lu, totalDownloadBytes: %lu, currentDownloadBytes: %lu", 

            [runningActivities count], [endingActivities count], totalUploadBytes, currentUploadBytes, totalDownloadBytes, currentDownloadBytes];

}

#pragma mark -

#pragma mark Timer

- (void)update:(NSTimer *)aTimer {

    NSMutableDictionary *info = [NSMutableDictionary dictionary];

    @synchronized(self) {

        PithosActivity *activity = nil;

        NSUInteger endingActivitiesCount = [endingActivities count];

        NSUInteger runningActivitiesCount = [runningActivities count];

        if ((pickedRunning || !runningActivitiesCount) && endingActivitiesCount) {

            NSUInteger index;

            for (index = 0 ; index < endingActivitiesCount; index++) {

                activity = [endingActivities objectAtIndex:index];

                switch (activity.type) {

                    case PithosActivityUpload:

                        totalUploadBytes -= activity.totalBytes;

                        currentUploadBytes -= activity.currentBytes;

                        break;

                    case PithosActivityDownload:

                        totalDownloadBytes -= activity.totalBytes;

                        currentDownloadBytes -= activity.currentBytes;

                        break;

                    default:

                        break;

                }

                [activity retain];

                if (activity.message)

                    break;

            }

            [endingActivities removeObjectsInRange:NSMakeRange(0, (index + 1))];

            pickedRunning = NO;

        } else if (runningActivitiesCount) {

            NSUInteger count;

            for (count = 0 ; count < runningActivitiesCount; count++) {

                activity = [runningActivities objectAtIndex:0];

                [runningActivities removeObjectAtIndex:0];

                [runningActivities addObject:activity];

                if (activity.message)

                    break;

            }

            [activity retain];

            pickedRunning = YES;

        }

        if (activity && activity.message)

            [info setObject:activity.message forKey:@"message"];

        [info setObject:[NSNumber numberWithUnsignedInteger:[runningActivities count]] forKey:@"runningActivitiesCount"];

        [info setObject:[NSNumber numberWithUnsignedInteger:[endingActivities count]] forKey:@"endingActivitiesCount"];

        [info setObject:[NSNumber numberWithUnsignedInteger:totalUploadBytes] forKey:@"totalUploadBytes"];

        [info setObject:[NSNumber numberWithUnsignedInteger:currentUploadBytes] forKey:@"currentUploadBytes"];

        [info setObject:[NSNumber numberWithUnsignedInteger:totalDownloadBytes] forKey:@"totalDownloadBytes"];

        [info setObject:[NSNumber numberWithUnsignedInteger:currentDownloadBytes] forKey:@"currentDownloadBytes"];

        [activity release];

        NSLog(@"PithosActivityFacility update: %@", info);

    }

    if (delegate) {

        [delegate activityUpdate:info];

    }

}

#pragma mark -

#pragma mark Activity Actions

- (PithosActivity *)startActivityWithType:(PithosActivityType)type 

                                  message:(NSString *)message 

                               totalBytes:(NSUInteger)totalBytes 

                               currentBytes:(NSUInteger)currentBytes {

    PithosActivity *activity = [[[PithosActivity alloc] initWithType:type] autorelease];

    activity.message = message;

    activity.totalBytes = totalBytes;

    activity.currentBytes = currentBytes;

    NSLog(@"PithosActivityFacility startedActivity %@", activity);

    switch (type) {

        case PithosActivityUpload:

            @synchronized(self) {

                totalUploadBytes += totalBytes;

                currentUploadBytes += currentBytes;

            }

            break;

        case PithosActivityDownload:

            @synchronized(self) {

                totalDownloadBytes += totalBytes;

                currentDownloadBytes += currentBytes;

            }

            break;

        default:

            break;

    }

    @synchronized(self) {

        [runningActivities addObject:activity];

    }

    NSLog(@"PithosActivityFacility %@", self);

    return activity;

}

- (PithosActivity *)startActivityWithType:(PithosActivityType)type 

                                  message:(NSString *)message {

    return [self startActivityWithType:type message:message totalBytes:0 currentBytes:0];

}

- (void)updateActivity:(PithosActivity *)activity 

           withMessage:(NSString *)message 

            totalBytes:(NSUInteger)totalBytes 

          currentBytes:(NSUInteger)currentBytes {

    if (!activity)

        return;

    NSLog(@"PithosActivityFacility updatedActivity %@", activity);

    @synchronized(self) {

        activity.message = message;

        switch (activity.type) {

            case PithosActivityUpload:

                totalUploadBytes += totalBytes - activity.totalBytes;

                activity.totalBytes = totalBytes;

                currentUploadBytes += currentBytes - activity.currentBytes;

                activity.currentBytes = currentBytes;

                break;

            case PithosActivityDownload:

                totalDownloadBytes += totalBytes - activity.totalBytes;

                activity.totalBytes = totalBytes;

                currentDownloadBytes += currentBytes - activity.currentBytes;

                activity.currentBytes = currentBytes;

                break;

            default:

                break;

        }

    }

    NSLog(@"PithosActivityFacility %@", self);

}

- (void)updateActivity:(PithosActivity *)activity 

           withMessage:(NSString *)message {

    [self updateActivity:activity withMessage:message totalBytes:activity.totalBytes currentBytes:activity.currentBytes];

}

- (void)endActivity:(PithosActivity *)activity 

        withMessage:(NSString *)message 

         totalBytes:(NSUInteger)totalBytes 

       currentBytes:(NSUInteger)currentBytes {

    if (!activity)

        return;

    @synchronized(self) {

        [runningActivities removeObject:activity];

        activity.message = message;

        switch (activity.type) {

            case PithosActivityUpload:

                totalUploadBytes += totalBytes - activity.totalBytes;

                activity.totalBytes = totalBytes;

                currentUploadBytes += currentBytes - activity.currentBytes;

                activity.currentBytes = currentBytes;

                break;

            case PithosActivityDownload:

                totalDownloadBytes += totalBytes - activity.totalBytes;

                activity.totalBytes = totalBytes;

                currentDownloadBytes += currentBytes - activity.currentBytes;

                activity.currentBytes = currentBytes;

                break;

            default:

                break;

        }

        [endingActivities addObject:activity];

    }

    NSLog(@"PithosActivityFacility endedActivity %@", activity);

    NSLog(@"PithosActivityFacility %@", self);

}

- (void)endActivity:(PithosActivity *)activity 

        withMessage:(NSString *)message {

    [self endActivity:activity withMessage:message totalBytes:activity.totalBytes currentBytes:activity.currentBytes];

}

@end