Windows Log Stream Support

[jfenger-rescale]

Hello,

I am relying on the Mezmo agent in Windows and have been encountering issues with the agent (3.9 & 3.10) being able to read a file that is being written to like the following:

& .\script.ps1 | Out-File -Append -Encoding utf8 -Filepath C:\example.log 2>&1

If I run an ls example.log on the system, then the contents of the file are detected by the Mezmo agent and successfully sent. I would basically have to keep spamming ls in order for the agent to detect newer logs being pushed to the file.

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Version 1.6.2 of the Mezmo agent works fine so this hurting my ability to upgrade from 1.6.2 to 3.9.0.50 unless I change how I write to my log file in my scripts.

[jakedipity]

logdna-agent-v1 uses constant polling to track the state of files whereas v2 relies on file events from the operating system to trigger state updates.

I believe this is a known issue where logs are being written into an in-memory buffer and are not immediately written to disk, hence the agent doesn't get any updates. This is currently a won't fix issue.

You can try rewriting your output logic to manually flush every handful of lines