Added Log Group Cleanup to Clean up Action

[okankoAMZ]

Description of Changes

This pull request introduces a new job to the GitHub Actions workflow for cleaning up old AWS CloudWatch log groups. The key changes include:

Workflow Changes

• File: .github/workflows/clean-aws-resources.yml
  • Added a new job clean-log-groups to clean old CloudWatch log groups.

New Feature

• File: tool/clean/clean_log_group/clean_log_group.go
  • Implemented a new Go script to clean old CloudWatch log groups.
  • The script deletes log groups that are older than a specified threshold and have been inactive for a defined period. By default is will delete any log group created 3 days ago which have not received a log in a day.
  • It also has a exception list that if a string there is found in a log group name it will ignore it.
  • Configurable via command-line flags for threshold days, inactive days, and dry-run mode.

Dependency Updates

• File: tool/clean/go.mod
  • Updated Go version to 1.22 and added a toolchain for Go 1.23.6.
  • Upgraded dependencies including github.com/aws/aws-sdk-go-v2 and added new dependencies for cloudwatchlogs.

License

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

Tests

• Verified workflows on GitHub Actions: Latest Run details
• Added unit tests and ran: go test ./clean_log_group -v

\=== RUN   TestGetLastLogEventTime
    clean_log_group_test.go:84: PASS:   DescribeLogStreams(string,*cloudwatchlogs.DescribeLogStreamsInput,string)
    clean_log_group_test.go:84: PASS:   DescribeLogStreams(string,*cloudwatchlogs.DescribeLogStreamsInput,string)
--- PASS: TestGetLastLogEventTime (0.00s)
=== RUN   TestHandleLogGroup
=== RUN   TestHandleLogGroup/expired-test-log-group
2025/03/03 12:15:05 🚨 Worker: 1| Old & Inactive Log Group: expired-test-log-group (Created: 57121-08-18 15:37:59 -0400 EDT, Last Event: 57121-08-18 15:37:59 -0400 EDT)
2025/03/03 12:15:05 🛑 Dry-Run: Would delete log group: expired-test-log-group
2025/03/03 12:15:05 🔍 Processed 1 log groups so far
=== RUN   TestHandleLogGroup/fresh-test-log-group
=== RUN   TestHandleLogGroup/old-test-log-group
--- PASS: TestHandleLogGroup (3.00s)
    --- PASS: TestHandleLogGroup/expired-test-log-group (1.00s)
    --- PASS: TestHandleLogGroup/fresh-test-log-group (1.00s)
    --- PASS: TestHandleLogGroup/old-test-log-group (1.00s)
=== RUN   TestDeleteLogGroups
=== RUN   TestDeleteLogGroups/expired-test-log-group
2025/03/03 12:15:08 👷 Creating 15 workers
2025/03/03 12:15:08 🔍 Described 0 times | Found 1 log groups
2025/03/03 12:15:08 🚨 Worker: 1| Old & Inactive Log Group: expired-test-log-group (Created: 57121-08-18 16:28:04 -0400 EDT, Last Event: 57121-08-18 16:28:04 -0400 EDT)
2025/03/03 12:15:08 🛑 Dry-Run: Would delete log group: expired-test-log-group
2025/03/03 12:15:08 🔍 Processed 1 log groups so far
=== RUN   TestDeleteLogGroups/fresh-test-log-group
2025/03/03 12:15:08 👷 Creating 15 workers
2025/03/03 12:15:08 🔍 Described 0 times | Found 1 log groups
=== RUN   TestDeleteLogGroups/old-test-log-group
2025/03/03 12:15:08 👷 Creating 15 workers
2025/03/03 12:15:08 🔍 Described 0 times | Found 1 log groups
=== RUN   TestDeleteLogGroups/exceptional-test-log-group
2025/03/03 12:15:08 👷 Creating 15 workers
2025/03/03 12:15:08 🔍 Described 0 times | Found 1 log groups
--- PASS: TestDeleteLogGroups (0.00s)
    --- PASS: TestDeleteLogGroups/expired-test-log-group (0.00s)
    --- PASS: TestDeleteLogGroups/fresh-test-log-group (0.00s)
    --- PASS: TestDeleteLogGroups/old-test-log-group (0.00s)
    --- PASS: TestDeleteLogGroups/exceptional-test-log-group (0.00s)
PASS
ok      github.com/aws/amazon-cloudwatch-agent/tool/clean/clean_log_group       3.211s

Requirements

Before committing the code, please complete the following steps:

1. Run make fmt and make fmt-sh.
2. Run make lint.

---

[the-mann]

This is huge for cost savings! would be nice to see some unit tests here, but other than that look sgood

[Paramadon]

LGTM!