Do not log into zowe.runtimeDirectory

[Martin-Zeithaml]

Proposed changes

This PR addresses Issue: zowe/zowe-install-packaging#3495

This PR depends upon the following PRs:

Type of change

• Refactor the code
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

PR Checklist

Please delete options that are not relevant.

• If the changes in this PR are meant for the next release / mainline, this PR targets the "staging" branch.
• My code follows the style guidelines of this project (see: Contributing guideline)
• Relevant update to CHANGELOG.md
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works, or describe a test method below

Testing

zowe.logDirectory not used in config:

No log directory. Logging disabled.     
ZWED_NODE_LOG_FILE=/dev/null            
...
No log directory. Logging disabled.    
ZWES_LOG_FILE=/dev/null                

zowe.logDirectory set to /zowe/logs/

ZWED_NODE_LOG_FILE=/zowe/logs/appServer-2024-08-27-07-39.log  
ZWES_LOG_FILE=/zowe/logs/zssServer-2024-08-27-07-39.log   

[1000TurquoisePogs]

You say "ommiting zowe.logDirectory forces the zss to log into the zowe.runtimeDirectory"
But that was by design.
It's intended for development: if you don't have a log directory, where should we log? We decided to log in the same location.

So yes you can change this behavior, but it sounds like the bug to me is actually: why does a user not have zowe.logDirectory ?
Sounds like something the schema should prevent?

[Martin-Zeithaml]

1. The zowe.logDirectory is not mandatory and it is not in defaults.yaml. If you simply delete/comment out logDirectory line from config, it is valid from the schema point of view and app-server and zss are logging into zowe.runtimeDirectory.
2. I have created this issue to warn users from using zowe.runtimeDirectory.
   a) If this check will be implemented, we might check (just for sure) all directories. It is possible, some new users locate certificates into zowe.runtimeDirectory.
3. Making zowe.logDirectory mandatory in schema validation is too aggressive - you must have logDirectory for every zwe command.
4. I don't know, if schema is capable of such complicated check, what we really need is to compare "os.realpath(*Directory) vs os.realpath(runtimeDirectory)" - you can define there symbolic links, relative/absolute path and who knows what else.
5. At this point, you can define zowe.logDirectory and later comment it out - this check is better to do during the startup

Possible solution in launcher?

We make it the same as for zowe.workspaceDirectory:

• zowe.workspaceDirectory is not mandatory, but you cannot run zowe without it:

ZWESVUSR INFO ZWEL0069I Configuration is valid             
ZWESVUSR ERROR ZWEL0059E failed to get WORKSPACE_DIR dir   

• We could possibly set /dev/null as default
  • By default, the logging is off, if you want to log, specify the directory.
  • Edit: Internal start prepare is trying to create /dev/null and fails, this should be already checked, since setting zowe.logDirectory=/dev/null is allowed
• Launcher could do the realpath check and either issue warning or stop if the extensionDirectory | workspaceDirectory | logDirectory is nested in runtimeDirectory
• Following setting will be illegal/not recommended:

  logDirectory: ${{ zowe.runtimeDirectory }}/logs
  workspaceDirectory: ${{ zowe.runtimeDirectory }}/workspace
  extensionDirectory: ${{ zowe.runtimeDirectory }}/extension

[JoeNemo]

Approved.