Feature - Task Metrics #1492
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Feature - Task Metrics #1492
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| @@ -154,6 +183,8 @@ public struct DownloadResponse<Value> { | |||
| /// The timeline of the complete lifecycle of the request. | |||
| public let timeline: Timeline | |||
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| var _metrics: AnyObject? | |||
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Why is this AnyObject and not URLSessionTaskMetrics?
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Just so the internal variable didn't need be behind an availability check?
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Yep...you can't store a URLSessionTaskMetrics as a stored property b/c it's not available on the older OS's. This is the only valid workaround I've found to the problem yet. It's nasty, but it does work.
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You can't put the whole stored property behind an availability check?
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Looks good. |
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Awesome, thanks @jshier. I'm going to go ahead and move this through. |
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This PR adds support for the awesome new
URLSessionTaskMetricstatistical tracking. This is essentially what we always wanted theTimelineto be, but we didn't have access to the same internal APIs to compute all these data points. Thanks Apple!This shouldn't be a difficult feature to build, but it most definitely was due to the complexity of compiling against 4 platforms with only three of the latest actually supporting new APIs. Therefore, I had to get pretty creative with the new
Responseprotocol and extension in combination withAnyObjectabstraction while moving the metrics through the various objects.Overall, I'm VERY happy with how this turned out. I wish it wasn't so complicated to support so many platforms, but unfortunately, it is. I abstracted the complexity away into the single
Responseprotocol and implementation, so that certainly helps isolate all the platform complexity to a single area.