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Remove expired items from disk in background thread #54

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Remove expired items from disk in background thread #54

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5570bde
moved clearing expired items to background
pilot34 Nov 16, 2015
c69a634
spaces to tabs
pilot34 Nov 16, 2015
a8cfb4b
fixed init method
pilot34 Nov 18, 2015
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34 changes: 24 additions & 10 deletions EGOCache.m
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Original file line number Diff line number Diff line change
Expand Up @@ -70,16 +70,25 @@ + (instancetype)globalCache {
return instance;
}

- (void)removeOldCachesDirectory {
dispatch_async(_diskQueue, ^{
NSString* cachesDirectory = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0];
NSString* oldCachesDirectory = [[[cachesDirectory stringByAppendingPathComponent:[[NSProcessInfo processInfo] processName]] stringByAppendingPathComponent:@"EGOCache"] copy];

if([[NSFileManager defaultManager] fileExistsAtPath:oldCachesDirectory]) {
[[NSFileManager defaultManager] removeItemAtPath:oldCachesDirectory error:NULL];
}
});
}

- (instancetype)init {
NSString* cachesDirectory = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0];
NSString* oldCachesDirectory = [[[cachesDirectory stringByAppendingPathComponent:[[NSProcessInfo processInfo] processName]] stringByAppendingPathComponent:@"EGOCache"] copy];

if([[NSFileManager defaultManager] fileExistsAtPath:oldCachesDirectory]) {
[[NSFileManager defaultManager] removeItemAtPath:oldCachesDirectory error:NULL];
NSString* egoCacheDirectory = [[[cachesDirectory stringByAppendingPathComponent:[[NSBundle mainBundle] bundleIdentifier]] stringByAppendingPathComponent:@"EGOCache"] copy];
self = [self initWithCacheDirectory:egoCacheDirectory];
if (self) {
[self removeOldCachesDirectory];
}

cachesDirectory = [[[cachesDirectory stringByAppendingPathComponent:[[NSBundle mainBundle] bundleIdentifier]] stringByAppendingPathComponent:@"EGOCache"] copy];
return [self initWithCacheDirectory:cachesDirectory];
return self;
}

- (instancetype)initWithCacheDirectory:(NSString*)cacheDirectory {
Expand All @@ -104,20 +113,25 @@ - (instancetype)initWithCacheDirectory:(NSString*)cacheDirectory {
if(!_cacheInfo) {
_cacheInfo = [[NSMutableDictionary alloc] init];
}

[[NSFileManager defaultManager] createDirectoryAtPath:_directory withIntermediateDirectories:YES attributes:nil error:NULL];

dispatch_async(_diskQueue, ^{
[[NSFileManager defaultManager] createDirectoryAtPath:_directory withIntermediateDirectories:YES attributes:nil error:NULL];
});

NSTimeInterval now = [[NSDate date] timeIntervalSinceReferenceDate];
NSMutableArray* removedKeys = [[NSMutableArray alloc] init];

for(NSString* key in _cacheInfo) {
if([_cacheInfo[key] timeIntervalSinceReferenceDate] <= now) {
[[NSFileManager defaultManager] removeItemAtPath:cachePathForKey(_directory, key) error:NULL];
dispatch_async(_diskQueue, ^{
[[NSFileManager defaultManager] removeItemAtPath:cachePathForKey(_directory, key) error:NULL];
});
[removedKeys addObject:key];
}
}

[_cacheInfo removeObjectsForKeys:removedKeys];

self.frozenCacheInfo = _cacheInfo;
[self setDefaultTimeoutInterval:86400];
}
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