deal with NPE during host reconnect

[DaanHoogland]

Description

This PR is to investigate and solve #10154

log to see what command is being processed

Fixes: #10154

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?

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

[DaanHoogland]

@blueorangutan package

[blueorangutan]

@DaanHoogland 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.

[blueorangutan]

Packaging result [SF]: ✖️ el8 ✖️ el9 ✖️ debian ✖️ suse15. SL-JID 11972

[codecov]

Codecov Report

Attention: Patch coverage is 25.00000% with 12 lines in your changes missing coverage. Please review.

Project coverage is 15.13%. Comparing base (5c01cff) to head (321b329).
Report is 26 commits behind head on 4.19.

Files with missing lines	Patch %	Lines
...java/com/cloud/agent/manager/AgentManagerImpl.java	25.00%	10 Missing and 2 partials ⚠️

Additional details and impacted files

@@ Coverage Diff @@## 4.19 #10158 +/- ##
=========================================
Coverage 15.12% 15.13% - Complexity 11264 11267 +3 
=========================================
Files 5408 5408 Lines 473899 473900 +1 Branches 57791 57790 -1 =========================================
+ Hits 71691 71706 +15 + Misses 394208 394192 -16 - Partials 8000 8002 +2 

Flag	Coverage Δ
uitests	4.30% <ø> (ø)
unittests	15.85% <25.00%> (+<0.01%)	⬆️

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[blueorangutan]

Packaging result [SF]: ✔️ el8 ✔️ el9 ✔️ debian ✔️ suse15. SL-JID 11973

[yadvr]

@blueorangutan help

[blueorangutan]

@rohityadavcloud [SL] I understand these words: "help", "hello", "thanks", "package", "test"
Test command usage: test [mgmt os] [hypervisor] [keepEnv] [qemuEv] [basicZone|securityGroups]
Mgmt OS options: ['ol8', 'ol9', 'debian12', 'rocky8', 'alma9', 'suse15', 'centos7', 'centos6', 'alma8', 'ubuntu18', 'ubuntu22', 'ubuntu20', 'ubuntu24']
Hypervisor options: ['kvm-centos6', 'kvm-centos7', 'kvm-rocky8', 'kvm-ol8', 'kvm-ol9', 'kvm-alma8', 'kvm-alma9', 'kvm-ubuntu18', 'kvm-ubuntu20', 'kvm-ubuntu22', 'kvm-ubuntu24', 'kvm-debian12', 'kvm-suse15', 'vmware-55u3', 'vmware-60u2', 'vmware-65u2', 'vmware-67u3', 'vmware-70u1', 'vmware-70u2', 'vmware-70u3', 'vmware-80', 'vmware-80u1', 'vmware-80u2', 'vmware-80u3', 'xenserver-65sp1', 'xenserver-71', 'xenserver-74', 'xcpng74', 'xcpng76', 'xcpng80', 'xcpng81', 'xcpng82']
Note: when keepEnv is passed, you need to specify mgmt server os and hypervisor or use the matrix command.
when qemuEv is passed, it will deploy KVM hyperviosr hosts with qemu-kvm-ev, else it will default to stock qemu.
When basicZone and/or securityGroups are passed it will create a zone of the last type specified (default is Advanced)
Package command usage: package [all(default value),kvm,xen,vmware,hyperv,ovm] - a comma separated list can be passed with package command to bundle the required hypervisor's systemVM templates. Not passing any argument will bundle all - kvm,xen and vmware templates.

Blessed contributors for kicking Trillian test jobs: ['rohityadavcloud', 'shwstppr', 'vishesh92', 'Pearl1594', 'harikrishna-patnala', 'nvazquez', 'DaanHoogland', 'weizhouapache', 'borisstoyanov', 'vladimirpetrov', 'kiranchavala', 'andrijapanicsb', 'NuxRo', 'rajujith', 'alexandremattioli', 'sureshanaparti', 'abh1sar']

[DaanHoogland]

@blueorangutan test

[blueorangutan]

@DaanHoogland a [SL] Trillian-Jenkins test job (ol8 mgmt + kvm-ol8) has been kicked to run smoke tests

[blueorangutan]

[SF] Trillian test result (tid-12082)
Environment: kvm-ol8 (x2), Advanced Networking with Mgmt server ol8
Total time taken: 48409 seconds
Marvin logs: https://github.com/blueorangutan/acs-prs/releases/download/trillian/pr10158-t12082-kvm-ol8.zip
Smoke tests completed. 133 look OK, 0 have errors, 0 did not run
Only failed and skipped tests results shown below:

Test	Result	Time (s)	Test File

[harikrishna-patnala]

code LGTM

[DaanHoogland]

removed the needs tasting label as it proves not to be reproduced. Has been regression tested at least.

[shwstppr]

Code lgtm