Android log reader reads any recent logs#45743
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blasten merged 1 commit intoflutter:masterfrom Nov 28, 2019
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| test('Can parse adb shell dumpsys info', () { |
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we should probably also have a real devicelab test that verifies that we're not getting old logs when you run flutter run or flutter logs
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Hixie
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Nov 28, 2019
| final String lastTimestamp = device.lastLogcatTimestamp; | ||
| // Start the adb logcat process and filter the most recent logs since `lastTimestamp`. | ||
| final List<String> args = <String>['logcat', '-v', 'time', '-T', lastTimestamp]; | ||
| processUtils.start(device.adbCommandForDevice(args)).then<void>((Process process) { |
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this looks a lot simpler than the code used to look; why was the old code more complicated?
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I'm not sure. I was trying to see in which version the -T flag was introduced.
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Approach sounds reasonable to me. |
This was referenced Feb 10, 2020
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This was referenced Mar 20, 2020
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Description
After #45307, the Android log reader doesn't filter older logs. Instead, it filters by tag and the protocol discovery class throttles the logs to discover the most recent observatory URI. The intention with this change was to allow
flutter attachto attach to an app already running on the device. However, this implementation detail is used by the microbenchmarks test to extract the benchmark data.This PR reverts to the old behavior. Going forward, we can have two factories for the Android log reader such the one that filters by tags is explicitly injected in the
flutter attachflow and the other one is injected influtter run/logsflows. cc @xsterRelated Issues
Fixes #45732
Tests
I added the following tests: Unit test
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