fix: add loop control for options list task in otelwinreg

[alanbty]

Description:
Fixing an issue - Add a loop control for loop task "Get Splunk OpenTelemetry Collector options list" in otel_win_reg.yml.
This fix prevents a potentially sensitive value from being displayed.

Testing:

TASK [signalfx.splunk_otel_collector.collector : Get Splunk OpenTelemetry Collector options list]
**********************************************************************************************************************************
skipping: [hostA] => (item=KEYOFMYSECRETVALUE) 
skipping: [hostA]

[github-actions]

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[alanbty]

I have read the CLA Document and I hereby sign the CLA

[hughesjj]

I note in your example you have item=KEYOFMYSECRETVALUE, so wanted to double check that we indeed want item.key.

In general I'm for adding the loop control + label

[hughesjj]

relevant parts of code for other reviewers:

• ansible docs
• splunk_otel_collector_options

  •   SPLUNK_ACCESS_TOKEN: "{{ splunk_access_token }}"
      SPLUNK_API_URL: "{{ splunk_api_url }}"
      GOMEMLIMIT: "{{ gomemlimit if gomemlimit != '' else omit }}"
      SPLUNK_BUNDLE_DIR: >-
        {{ splunk_bundle_dir if splunk_bundle_dir != '' else
        '{{ansible_env.ProgramFiles}}\Splunk\OpenTelemetry Collector\agent-bundle' }}
      SPLUNK_COLLECTD_DIR: "{{ splunk_collectd_dir if splunk_collectd_dir != '' else omit }}"
      SPLUNK_CONFIG: >-
        {{ splunk_otel_collector_config if splunk_otel_collector_config != '' else
        '{{ ansible_env.ProgramData }}\Splunk\OpenTelemetry Collector\agent_config.yaml' }}
      SPLUNK_INGEST_URL: "{{ splunk_ingest_url }}"
      SPLUNK_HEC_TOKEN: "{{ splunk_hec_token }}"
      SPLUNK_HEC_URL: "{{ splunk_hec_url }}"
      SPLUNK_LISTEN_INTERFACE: "{{ splunk_listen_interface if splunk_listen_interface != '' else omit }}"
      SPLUNK_MEMORY_TOTAL_MIB: "{{ splunk_memory_total_mib }}"
      SPLUNK_REALM: "{{ splunk_realm }}"
      SPLUNK_TRACE_URL: "{{ splunk_trace_url }}"
    

• splunk_otel_collector_additional_env_vars (looks empty from defaults)

[jeffreyc-splunk]

I'm not too familiar, but the output from our CI tests still shows the values:

TASK [signalfx.splunk_otel_collector.collector : Get Splunk OpenTelemetry Collector options list] ***
ok: [2016] => (item=SPLUNK_ACCESS_TOKEN) => {"ansible_facts": {"splunk_otel_collector_options_list": ["SPLUNK_ACCESS_TOKEN=fake-token"]}, "ansible_loop_var": "item", "changed": false, "item": {"key": "SPLUNK_ACCESS_TOKEN", "value": "fake-token"}}
...

According to the note for label:

This is for making console output more readable, not protecting sensitive data. If there is sensitive data in `loop`, set `no_log: true` on the task to prevent disclosure.

So if the goal is hide the sensitive data, then maybe we should try no_log: true instead of loop_control?

[alanbty]

I'm not too familiar, but the output from our CI tests still shows the values:

TASK [signalfx.splunk_otel_collector.collector : Get Splunk OpenTelemetry Collector options list] ***
ok: [2016] => (item=SPLUNK_ACCESS_TOKEN) => {"ansible_facts": {"splunk_otel_collector_options_list": ["SPLUNK_ACCESS_TOKEN=fake-token"]}, "ansible_loop_var": "item", "changed": false, "item": {"key": "SPLUNK_ACCESS_TOKEN", "value": "fake-token"}}
...

According to the note for label:

This is for making console output more readable, not protecting sensitive data. If there is sensitive data in `loop`, set `no_log: true` on the task to prevent disclosure.

So if the goal is hide the sensitive data, then maybe we should try no_log: true instead of loop_control?

Hello @jeffreyc-splunk,

Sorry for the late response.

I think your tests have the Ansible verbosity parameter enabled, that's why the pipeline shows values.

You're right, no log: true is the best solution to hide sensitive values. But it also remove error messages if there is an issue on this task.
So, as you wish, either you want to avoid displaying sensitive values and use no log: true, or you use loop_control and allow sensitive values to be displayed ONLY with Ansible verbose parameter.

[hughesjj]

Let's go with no log: true for now, and if needed we can modify it or come back in the future to properly redact the token with loop_control.

Alternatively, if you want to modify loop_control to not log the credential (regardless of verbosity, maybe truncated on verbose or just log <REDACTED> if it's non-empty?)

credential log issue