[Xamarin.Android.Build.Tasks] The "ConvertResourcesCases" task failed unexpectedly. #1371
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… unexpectedly. DevDiv Issue 571365 We have a report that `ConvertResourcesCases` is failing with the follow error. error MSB4018: The "ConvertResourcesCases" task failed unexpectedly. Android/Xamarin.Android.Common.targets(1334,2): error MSB4018: System.IO.FileNotFoundException: <some path>/design_layout_snackbar.xml.tmp does not exist This is completely weird, especially as the Task is not called in parallel. What I susepct is happening is VSForMac is running is UpdateResources task at the same time the user is doing a build. Because the name of the temp files we are just `foo.xml.tmp` it is highly possible that one instance of the task is deleting the file while the other instance is still running. This is difficult to replicate. This change uses System.IO.Path.GetFileName (System.IO.Path.GetTempFileName ()); to generate a random temp file name for the temp file. This should stop filename collisions.
jonpryor
reviewed
Mar 6, 2018
| Log.LogDebugMessage (" Processing: {0}", file); | ||
| var srcmodifiedDate = File.GetLastWriteTimeUtc (file); | ||
| var tmpdest = file + ".tmp"; | ||
| var tmpdest = file + "_" + Path.GetFileName (Path.GetTempFileName ()); |
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Fair idea, not-quite-write implementation.
Did you know that Path.GetTempFileName() creates the file?
This method creates a temporary file with a .TMP file extension.
For example:
var p = Path.GetTempFileName();
// p == e.g. "/var/folders/1y/wwmg3hv5685ft661f5q2w2100000gn/T/tmpa1d2e05.tmp"
File.Exists(p); // is trueAs such, Path.GetFileName(Path.GetTempFileName()) will "litter" the user's %TMPDIR% directory with temporary files which are never deleted.
Instead, we should just do:
var tempest = Path.GetTempFileName ();We'll properly delete this file in the finally block below.
Contributor
|
The macOS+xbuild PR Build is failing: |
Contributor
Author
Contributor
|
@dean: sounds like we should crib the |
jonpryor
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that referenced
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Mar 9, 2018
… unexpectedly. (#1371) Fixes? https://devdiv.visualstudio.com/DevDiv/_workitems/edit/571365 We have a report that `ConvertResourcesCases` is failing with the following error: error MSB4018: The "ConvertResourcesCases" task failed unexpectedly. Android/Xamarin.Android.Common.targets(1334,2): error MSB4018: System.IO.FileNotFoundException: <some path>/design_layout_snackbar.xml.tmp does not exist This is completely weird, especially as the Task is not being called concurrently (or so we hope & assume). What I suspect is happening is Visual Studio for Mac is running the `UpdateAndroidResources` target at the same time the user started a build. Because the name of the temp files was just `foo.xml.tmp` it is highly possible that one instance of the task is deleting the file while another instance is still running. This is difficult to replicate. Attempt to "fix" things by using `System.IO.Path.GetTempFileName()` instead of appending `.tmp` to the filename. This should avoid filename collisions. However, if our suspicion is correct that the `UpdateAndroidResources` target is concurrently executing alongside a Build, this patch will *not* fix the concurrent target execution scenario.
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DevDiv Issue 571365
We have a report that
ConvertResourcesCasesis failing with the followerror.
This is completely weird, especially as the Task is not called in
parallel. What I susepct is happening is VSForMac is running is
UpdateResources task at the same time the user is doing a build.
Because the name of the temp files we are just
foo.xml.tmpitis highly possible that one instance of the task is deleting the
file while the other instance is still running. This is difficult
to replicate.
This change uses
to generate a random temp file name for the temp file. This should
stop filename collisions since the file will end up in the
/tmpdirectory.