[pkg/stanza] Delete after read deletes partially read files

[cpheps]

Component(s)

pkg/stanza

What happened?

Description

When the collector is shutdown while still in progress reading a file it will delete the file even though it's not fully been read.

Steps to Reproduce

Setup the filelog receiver with delete_after_read enabled and target a large file. Start the collector then immediately stop it. The file will be deleted even though the collector didn't finish reading it.

Expected Result

File is left intact until fully read.

Actual Result

File is deleted on shutdown when only partially read.

Collector version

v0.71.0

Environment information

Environment

OS: macOS 13.2.1
Compiler(if manually compiled): go 1.20.1

OpenTelemetry Collector configuration

receivers:
  filelog:
    include: ["/tmp/logs/*.log"]
    start_at: beginning
    delete_after_read: true
exporters:
  logging:

service:
  pipelines:
    logs:
      receivers: [filelog]
      exporters: [logging]

Log output

No response

Additional context

No response

[cpheps]

I'll volunteer to work on this.

[github-actions]

Pinging code owners:

• pkg/stanza: @djaglowski

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