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Allows to keep the set image operation key to downstream component like downloader or cacher, used for tracing

This commit is contained in:
DreamPiggy 2020-04-17 15:51:19 +08:00
parent e5adec920b
commit 64b13dc346
1 changed files with 15 additions and 1 deletions
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16
SDWebImage/Core/UIView+WebCache.m
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@ -52,10 +52,19 @@ const int64_t SDWebImageProgressUnitCountUnknown = 1LL;
setImageBlock:(nullable SDSetImageBlock)setImageBlock
progress:(nullable SDImageLoaderProgressBlock)progressBlock
completed:(nullable SDInternalCompletionBlock)completedBlock {
context = [context copy]; // copy to avoid mutable object
if (context) {
// copy to avoid mutable object
context = [context copy];
} else {
context = [NSDictionary dictionary];
}
NSString *validOperationKey = context[SDWebImageContextSetImageOperationKey];
if (!validOperationKey) {
// pass through the operation key to downstream, which can used for tracing operation or image view class
validOperationKey = NSStringFromClass([self class]);
SDWebImageMutableContext *mutableContext = [context mutableCopy];
mutableContext[SDWebImageContextSetImageOperationKey] = validOperationKey;
context = [mutableContext copy];
}
self.sd_latestOperationKey = validOperationKey;
[self sd_cancelImageLoadOperationWithKey:validOperationKey];
@ -83,6 +92,11 @@ const int64_t SDWebImageProgressUnitCountUnknown = 1LL;
SDWebImageManager *manager = context[SDWebImageContextCustomManager];
if (!manager) {
manager = [SDWebImageManager sharedManager];
} else {
// remove this manager to avoid retain cycle (manger -> loader -> operation -> context -> manager)
SDWebImageMutableContext *mutableContext = [context mutableCopy];
mutableContext[SDWebImageContextCustomManager] = nil;
context = [mutableContext copy];
}
SDImageLoaderProgressBlock combinedProgressBlock = ^(NSInteger receivedSize, NSInteger expectedSize, NSURL * _Nullable targetURL) {