Deprecate AppCookie (App session) based stickiness type policy for Virtual Router

[sureshanaparti]

Description

This PR deprecates AppCookie (App session) based stickiness type policy for Virtual Router, and some code improvements.

Fixes #3253

Types of changes

• Breaking change (fix or feature that would cause existing functionality to change)
• New feature (non-breaking change which adds functionality)
• Bug fix (non-breaking change which fixes an issue)
• Enhancement (improves an existing feature and functionality)
• Cleanup (Code refactoring and cleanup, that may add test cases)
• Build/CI
• Test (unit or integration test code)

Feature/Enhancement Scale or Bug Severity

Feature/Enhancement Scale

• Major
• Minor

Bug Severity

• BLOCKER
• Critical
• Major
• Minor
• Trivial

Screenshots (if appropriate):

How Has This Been Tested?

• Create VPC, network tier(s) and deploy instance on it.
• Acquire public IP and configure load balancing rule.
• On load balancing rule, configure sticky policy with 'AppCookie' method (this should fail with error).

How did you try to break this feature and the system with this change?

[sureshanaparti]

@blueorangutan package

[blueorangutan]

@sureshanaparti a [SL] Jenkins job has been kicked to build packages. It will be bundled with KVM, XenServer and VMware SystemVM templates. I'll keep you posted as I make progress.

[codecov]

Codecov Report

❌ Patch coverage is 25.00000% with 15 lines in your changes missing coverage. Please review.
✅ Project coverage is 16.26%. Comparing base (357186d) to head (723bcac).
⚠️ Report is 1 commits behind head on 4.20.

Files with missing lines	Patch %	Lines
...esource/virtualnetwork/VirtualRoutingResource.java	0.00%	13 Missing ⚠️
...ain/java/com/cloud/network/element/OvsElement.java	0.00%	1 Missing ⚠️
...loud/network/lb/LoadBalancingRulesManagerImpl.java	66.66%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               4.20   #13315      +/-   ##
============================================
- Coverage     16.26%   16.26%   -0.01%     
+ Complexity    13436    13434       -2     
============================================
  Files          5666     5666              
  Lines        500645   500638       -7     
  Branches      60801    60803       +2     
============================================
- Hits          81429    81408      -21     
- Misses       410106   410123      +17     
+ Partials       9110     9107       -3     

Flag	Coverage Δ
uitests	4.14% <ø> (ø)
unittests	17.11% <25.00%> (-0.01%)	⬇️

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[weizhouapache]

I think, a simple solution might be

cloudstack/server/src/main/java/com/cloud/network/router/NetworkHelperImpl.java

Line 997 in 7308dad

} else if (LbStickinessMethod.StickinessMethodType.AppCookieBased.getName().equalsIgnoreCase(stickinessPolicy.getMethodName())) {

throwing an exception after this line

[blueorangutan]

Packaging result [SF]: ✔️ el8 ✔️ el9 ✔️ el10 ✔️ debian ✔️ suse15. SL-JID 18115

[sureshanaparti]

I think, a simple solution might be

cloudstack/server/src/main/java/com/cloud/network/router/NetworkHelperImpl.java

Line 997 in 7308dad

} else if (LbStickinessMethod.StickinessMethodType.AppCookieBased.getName().equalsIgnoreCase(stickinessPolicy.getMethodName())) {

throwing an exception after this line

let me check it @weizhouapache