forked from kpopper/iOS-Multpart-File-Uploader
/
PartUploadTask.m
175 lines (143 loc) · 4.54 KB
/
PartUploadTask.m
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//
// PartUploadTask.m
// TestMultipartUpload
//
// Created by Ian Kynnersley on 04/09/2012.
// Copyright (c) 2012 Sidekick Studios. All rights reserved.
//
#import "PartUploadTask.h"
#import "Reachability.h"
@implementation PartUploadTask
@synthesize delegate=_delegate;
@synthesize partNumber=_partNumber;
@synthesize data=_data;
@synthesize s3=_s3;
@synthesize upload=_upload;
@synthesize percentageUploaded=_percentageUploaded;
- (id)initWithPartNumber:(NSInteger)partNumber dataToUpload:(NSData *)data s3Client:(AmazonS3Client *)s3 s3MultipartUpload:(S3MultipartUpload *)upload
{
self = [super init];
if( self )
{
[self setPartNumber:partNumber];
[self setData:data];
[self setS3:s3];
[self setUpload:upload];
isExecuting = NO;
isFinished = NO;
}
return self;
}
- (void)start
{
if ([self isCancelled] == YES)
{
NSLog(@"** OPERATION CANCELED **");
[self finish];
return;
}
NSLog(@"Uploader has started uploading part %d", [self partNumber]);
[self willChangeValueForKey:@"isExecuting"];
isExecuting = YES;
[self didChangeValueForKey:@"isExecuting"];
bool using3G = ![self isWifiAvailable];
S3UploadInputStream *stream = [S3UploadInputStream inputStreamWithData:[self data]];
if ( using3G ) {
// If connected via 3G "throttle" the stream.
stream.delay = 0.2; // In seconds
stream.packetSize = 16; // Number of 1K blocks
}
S3UploadPartRequest *upReq = [[S3UploadPartRequest alloc] initWithMultipartUpload:[self upload]];
upReq.partNumber = [self partNumber];
upReq.contentLength = [[self data] length];
upReq.stream = stream;
upReq.delegate = self;
[[self s3] uploadPart:upReq];
// This is a horrible hack. Without this the method returns immediately and the upload delegates never get called.
// Seems to be a threading thing.
// TODO: Find a more elegant solution
do {
[[NSRunLoop currentRunLoop] runMode:NSDefaultRunLoopMode beforeDate:[NSDate distantFuture]];
} while (!isFinished);
}
- (BOOL)isConcurrent
{
return YES;
}
- (BOOL)isExecuting
{
return isExecuting;
}
- (BOOL)isFinished
{
return isFinished;
}
-(BOOL)isWifiAvailable
{
Reachability *r = [Reachability reachabilityForLocalWiFi];
return !( [r currentReachabilityStatus] == NotReachable);
}
- (void)finish
{
[self willChangeValueForKey:@"isFinished"];
[self willChangeValueForKey:@"isExecuting"];
isExecuting = NO;
isFinished = YES;
[self didChangeValueForKey:@"isExecuting"];
[self didChangeValueForKey:@"isFinished"];
}
- (BOOL)isSignificantIncrease:(float)percentage
{
int mult = percentage * 100;
float rounded = mult / 100.0f;
if( rounded > [self percentageUploaded] )
{
[self setPercentageUploaded:rounded];
return YES;
}
return NO;
}
#pragma mark - AmazonServiceRequestDelegate
- (void)request:(AmazonServiceRequest *)request didFailWithError:(NSError *)error
{
[self finish];
if( [self delegate] && [[self delegate] respondsToSelector:@selector(partUploadTaskDidFail:)])
{
[[self delegate] partUploadTaskDidFail:self];
}
}
- (void)request:(AmazonServiceRequest *)request didFailWithServiceException:(NSException *)exception
{
[self finish];
if( [self delegate] )
{
[[self delegate] partUploadTaskDidFail:self];
}
}
- (void)request:(AmazonServiceRequest *)request didSendData:(NSInteger)bytesWritten totalBytesWritten:(NSInteger)totalBytesWritten totalBytesExpectedToWrite:(NSInteger)totalBytesExpectedToWrite
{
if(self.isCancelled) {
[request cancel];
[self finish];
return;
}
float percentage = (float)totalBytesWritten / (float)totalBytesExpectedToWrite;
if( ![self isSignificantIncrease:percentage] )
{
return;
}
if( [self delegate] && [[self delegate] respondsToSelector:@selector(partUploadTask:didUploadPercentage:)] )
{
[[self delegate] partUploadTask:self didUploadPercentage:percentage];
}
}
- (void)request:(AmazonServiceRequest *)request didCompleteWithResponse:(AmazonServiceResponse *)response
{
S3UploadPartResponse *partResponse = (S3UploadPartResponse *)response;
[self finish];
if( [self delegate] && [[self delegate] respondsToSelector:@selector(partUploadTask:didFinishUploadingPartNumber:etag:)] )
{
[[self delegate] partUploadTask:self didFinishUploadingPartNumber:[self partNumber] etag:[partResponse etag]];
}
}
@end