WIP: Replace brittle string split with regex for timestamp extraction for OCP-39845

[MrSanketkumar]

Problem

OCP-39845 test fails with error:

string length (279) exceeds the limit 128 (ArgumentError)
./features/step_definitions/file.rb:41:in 'parse'

Root Cause:
The test parses machineset-controller logs using .split("Watching") which assumes "Watching" keyword exists in logs. In 4.15/ARM64 builds, this keyword is missing or in a different location, causing the split to return 279 characters of log content instead of a timestamp.

Solution

• Replace brittle .split("Watching") logic with regex that directly extracts ISO8601 timestamps
• Add debug logging to help diagnose failures in Prow job console output
• Improved error messages showing actual vs expected values

Debug Output

The fix includes debug logging that will appear in Prow job console:

DEBUG: split1_old length=279 (shows the problem)
DEBUG: regex match1 found: 2026-06-11T04:10:20Z (shows the fix works)
DEBUG: Time difference = 45 seconds (shows actual timing)

[openshift-ci-robot]

@MrSanketkumar: No Jira issue with key OCP-39845 exists in the tracker at https://redhat.atlassian.net.
Once a valid jira issue is referenced in the title of this pull request, request a refresh with /jira refresh.

Details

In response to this:

Problem

OCP-39845 test fails with error:

string length (279) exceeds the limit 128 (ArgumentError)
./features/step_definitions/file.rb:41:in 'parse'

Root Cause:
The test parses machineset-controller logs using .split("Watching") which assumes "Watching" keyword exists in logs. In 4.15/ARM64 builds, this keyword is missing or in a different location, causing the split to return 279 characters of log content instead of a timestamp.

Solution

• Replace brittle .split("Watching") logic with regex that directly extracts ISO8601 timestamps
• Add debug logging to help diagnose failures in Prow job console output
• Improved error messages showing actual vs expected values

Debug Output

The fix includes debug logging that will appear in Prow job console:

DEBUG: split1_old length=279 (shows the problem)
DEBUG: regex match1 found: 2026-06-11T04:10:20Z (shows the fix works)
DEBUG: Time difference = 45 seconds (shows actual timing)

Testing

Will verify fix by checking debug output in next Prow job run of affected tests.

Fixes test failures in:

• 4.15 ARM64 upgrade jobs
• Private cluster + STS configurations
• Jobs with basecap-none

Related: OCP-39845 ClusterInfrastructure test

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[MrSanketkumar]

/hold

[MrSanketkumar]

/unhold

[miyadav]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: miyadav
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Details

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[openshift-ci]

@MrSanketkumar: all tests passed!

Full PR test history. Your PR dashboard.

Details

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