improvement: externalize timeout for hypervisor/agent commands

[shwstppr]

As discussed in #8502 (comment) it could be useful to externalize the wait timeouts for hypervisor/agent commands like ModifyStoragePoolCommand.
The downside of introducing new global configurations for each of these commands is having too many configurations so maybe a generic solution can be implemented.

[shwstppr]

Moving to 4.19.1.0 milestone for possible work on a generic solution for externalizing command timeouts

[GutoVeronezi]

Hey @DaanHoogland @vishesh92

I did not have time to elaborate on the proposal until now, but here is the draft.

For some edge cases, we have "wait"/"timeout" hardcoded values or values that come from global settings to set the commands timeout, like for GetAutoScaleMetricsCommand and for MigrateCommand. Currently, we have 385 classes that extend com.cloud.agent.api.Command (I skipped classes that extend com.cloud.agent.api.Answer); therefore, externalizing global settings for each command to provide flexibility is not feasible; however, we can reach flexibility by other means.

Currently, if we do not set a wait to the command, AgentManagerImpl will fallback to the wait global setting:

cloudstack/engine/orchestration/src/main/java/com/cloud/agent/manager/AgentManagerImpl.java

Lines 441 to 443 in af8a582

	if (timeout <= 0) {
	timeout = Wait.value();
	}

I propose to create a table of command_timeout in which we would store the classpath of the command and its wait/timeout. Then, instead of fall backing directly to the wait global setting, we would check if there is an entry of the command in this table. If it exists, then we use the entry's value; otherwise, we fall back to the wait global setting. Thus, we can change the commands wait/timeout on demand and in a flexible way.

The first step of the proposal would be creating the table and changing AgentManagerImpl to check the table. We could already create some entries for hardcoded values, like for the GetAutoScaleMetricsCommand.

Then, as a second step, we could create APIs to allow operators to list, persist, and remove the wait/timeouts. We could also create an annotation to describe the commands and create an API to allow operators to list the annotated commands; thus, making it clear to them which processes they can manage the timeout.

As a third and final step, we could extend this feature to be managed via GUI.

I will create a POC of this proposal; meanwhile, let me know your thoughts about the proposal.

Note: this proposal cover the common cases; eventually we will discuss the edge cases.

---

Following there is the code I used to retrieve the classes that extend com.cloud.agent.api.Command:

import com.cloud.agent.api.Answer;
import com.cloud.agent.api.Command;
import org.reflections.Reflections;
import java.util.HashSet;
import java.util.Set;
import java.util.stream.Collectors;

class ClassMapper {

    public static void main(String[] args) {
        Set<Class<?>> classesToIterateThrough = new HashSet<>(new Reflections("org.apache", "com.cloud").getSubTypesOf(Command.class));
        classesToIterateThrough = classesToIterateThrough.stream().filter(klazz -> !Answer.class.isAssignableFrom(klazz)).collect(Collectors.toSet());
        System.out.println("Count: " + classesToIterateThrough.size());
        for (Class<?> cmd: classesToIterateThrough) {
            System.out.println(cmdClass);
        }

    }
}

To execute it, run java -cp <path-to-cloud-client.jar> <path-to-file-with-the-above-code>.

Following there are the classes retrieved by the script:

Classes that extend com.cloud.agent.api.Command

org.apache.cloudstack.diagnostics.DeleteFileInVrCommand
org.apache.cloudstack.network.tungsten.agent.api.AssignTungstenFloatingIpCommand
com.cloud.agent.api.FindL2GatewayServiceCommand
com.cloud.agent.api.GetStorageStatsCommand
com.cloud.agent.api.storage.DestroyCommand
com.cloud.agent.api.GetVmNetworkStatsCommand
com.cloud.agent.api.PingRoutingCommand
com.cloud.agent.api.CreateVolumeFromSnapshotCommand
com.cloud.agent.api.CreateStoragePoolCommand
com.cloud.agent.api.ExternalNetworkResourceUsageCommand
com.cloud.agent.api.CheckOnHostCommand
org.apache.cloudstack.network.tungsten.agent.api.CreateTungstenApplicationPolicySetCommand
com.cloud.agent.api.PropagateResourceEventCommand
org.apache.cloudstack.network.tungsten.agent.api.ApplyTungstenNetworkPolicyCommand
com.cloud.agent.api.storage.ResizeVolumeCommand
com.cloud.agent.api.routing.SetPortForwardingRulesCommand
com.cloud.agent.api.CleanupNetworkRulesCmd
com.cloud.agent.api.DeleteBcfSegmentCommand
com.cloud.agent.api.FindLogicalSwitchPortCommand
com.cloud.agent.api.ReadyCommand
com.cloud.agent.api.storage.AbstractUploadCommand
org.apache.cloudstack.network.tungsten.agent.api.DeleteTungstenNetworkPolicyCommand
com.cloud.agent.api.SecStorageVMSetupCommand
com.cloud.agent.api.storage.CreateDatadiskTemplateCommand
com.cloud.agent.api.NetworkUsageCommand
com.cloud.agent.api.NetworkRulesVmSecondaryIpCommand
com.cloud.agent.api.CreateBcfSegmentCommand
org.apache.cloudstack.network.tungsten.agent.api.GetTungstenFabricNetworkCommand
com.cloud.agent.api.DisassociateMacFromNetworkCommand
org.apache.cloudstack.network.tungsten.agent.api.CreateTungstenTagTypeCommand
com.cloud.agent.api.GetVmVncTicketCommand
com.cloud.agent.api.UnregisterVMCommand
com.cloud.agent.api.storage.CreateEntityDownloadURLCommand
org.apache.cloudstack.network.tungsten.agent.api.UpdateTungstenLoadBalancerMemberCommand
org.apache.cloudstack.network.tungsten.agent.api.ListTungstenPolicyRuleCommand
org.apache.cloudstack.network.tungsten.agent.api.DeleteTungstenFirewallRuleCommand
org.apache.cloudstack.network.tungsten.agent.api.CreateTungstenNetworkPolicyCommand
org.apache.cloudstack.ca.SetupCertificateCommand
org.apache.cloudstack.network.tungsten.agent.api.ListTungstenTagCommand
org.apache.cloudstack.network.tungsten.agent.api.ListTungstenApplicationPolicySetCommand
com.cloud.agent.api.routing.SetIpv6FirewallRulesCommand
org.apache.cloudstack.network.opendaylight.agent.commands.ConfigurePortCommand
com.cloud.agent.api.routing.SetStaticRouteCommand
com.cloud.agent.api.storage.CheckStorageAvailabilityCommand
org.apache.cloudstack.network.tungsten.agent.api.ListTungstenFirewallPolicyCommand
com.cloud.agent.api.GetControllerDataCommand
com.cloud.agent.api.routing.SavePasswordCommand
org.apache.cloudstack.network.tungsten.agent.api.CreateTungstenPolicyCommand
org.apache.cloudstack.network.tungsten.agent.api.CreateTungstenAddressGroupCommand
com.cloud.agent.api.PingTestCommand
org.apache.cloudstack.network.tungsten.agent.api.RemoveTungstenSecurityGroupRuleCommand
com.cloud.agent.api.storage.SsCommand
org.apache.cloudstack.network.tungsten.agent.api.CreateTungstenDomainCommand
org.apache.cloudstack.shutdown.command.TriggerShutdownManagementServerHostCommand
com.cloud.agent.api.OvsSetTagAndFlowCommand
org.apache.cloudstack.network.tungsten.agent.api.CreateTungstenServiceGroupCommand
com.cloud.agent.api.ValidateVcenterDetailsCommand
com.cloud.agent.api.RollingMaintenanceCommand
com.cloud.agent.api.RebootCommand
com.cloud.agent.api.PlugNicCommand
com.cloud.agent.api.GetVmDiskStatsCommand
org.apache.cloudstack.storage.command.CreatePrimaryDataStoreCmd
com.cloud.agent.api.ConfigurePortForwardingRulesOnLogicalRouterCommand
org.apache.cloudstack.storage.command.MoveVolumeCommand
com.cloud.agent.api.DeleteLogicalRouterCommand
org.apache.cloudstack.network.tungsten.agent.api.RemoveTungstenPolicyCommand
com.cloud.agent.api.CreateBcfAttachmentCommand
org.apache.cloudstack.storage.command.SnapshotAndCopyCommand
com.cloud.agent.api.PingRoutingWithOvsCommand
com.cloud.agent.api.GetDomRVersionCmd
org.apache.cloudstack.network.tungsten.agent.api.DeleteTungstenVRouterPortCommand
com.cloud.agent.api.proxy.WatchConsoleProxyLoadCommand
com.cloud.agent.api.AgentControlCommand
com.cloud.agent.api.FreezeThawVMCommand
com.cloud.agent.api.DeleteSnapshotsDirCommand
com.cloud.agent.api.CheckStateCommand
com.cloud.agent.api.CopyRemoteVolumeCommand
org.apache.cloudstack.network.tungsten.agent.api.ReleaseTungstenFloatingIpCommand
com.cloud.agent.api.routing.RemoteAccessVpnCfgCommand
org.apache.cloudstack.network.tungsten.agent.api.ListTungstenVmCommand
com.cloud.agent.api.routing.SetFirewallRulesCommand
org.apache.cloudstack.agent.directdownload.HttpsDirectDownloadCommand
com.cloud.agent.api.CreateBcfStaticNatCommand
org.apache.cloudstack.network.tungsten.agent.api.DeleteTungstenApplicationPolicySetCommand
org.apache.cloudstack.network.tungsten.agent.api.UpdateTungstenDefaultSecurityGroupCommand
com.cloud.agent.api.SnapshotCommand
org.apache.cloudstack.network.tungsten.agent.api.CreateTungstenFloatingIpPoolCommand
com.cloud.agent.api.baremetal.PreparePxeServerCommand
com.cloud.agent.api.routing.LoadRouterHealthChecksConfigCommand
com.cloud.agent.api.routing.SetPortForwardingRulesVpcCommand
com.cloud.agent.api.PrepareForMigrationCommand
org.apache.cloudstack.network.tungsten.agent.api.AddTungstenPolicyRuleCommand
org.apache.cloudstack.network.tungsten.agent.api.DeleteTungstenTagCommand
com.cloud.agent.api.OvsDestroyBridgeCommand
com.cloud.agent.api.PvlanSetupCommand
org.apache.cloudstack.network.tungsten.agent.api.CreateTungstenFloatingIpCommand
com.cloud.agent.api.storage.ListVolumeCommand
com.cloud.agent.api.DeleteStoragePoolCommand
com.cloud.agent.api.ScaleVmCommand
com.cloud.agent.api.routing.GetRouterAlertsCommand
org.apache.cloudstack.network.tungsten.agent.api.GetTungstenLoadBalancerCommand
com.cloud.agent.api.GetStoragePoolCapabilitiesCommand
org.apache.cloudstack.storage.command.QuerySnapshotZoneCopyCommand
org.apache.cloudstack.network.tungsten.agent.api.CreateTungstenLogicalRouterCommand
com.cloud.agent.api.routing.IpAssocVpcCommand
com.cloud.agent.api.routing.IpAssocCommand
com.cloud.agent.api.storage.GetDatadisksCommand
org.apache.cloudstack.storage.command.CopyCommand
com.cloud.agent.api.routing.LoadBalancerConfigCommand
org.apache.cloudstack.network.tungsten.agent.api.TungstenCommand
com.cloud.agent.api.OvsDestroyTunnelCommand
org.apache.cloudstack.network.tungsten.agent.api.CreateTungstenSecurityGroupCommand
com.cloud.agent.api.PrepareOCFS2NodesCommand
org.apache.cloudstack.network.tungsten.agent.api.RemoveTungstenVmFromSecurityGroupCommand
com.cloud.agent.api.UpdateBcfAttachmentCommand
com.cloud.agent.api.PerformanceMonitorCommand
com.cloud.agent.api.RestoreVMSnapshotCommand
com.cloud.agent.api.GetVmIpAddressCommand
org.apache.cloudstack.storage.command.DownloadProgressCommand
com.cloud.agent.api.OvsVpcRoutingPolicyConfigCommand
com.cloud.agent.api.routing.HealthCheckLBConfigCommand
com.cloud.agent.api.GetGPUStatsCommand
com.cloud.agent.api.ConfigureStaticNatRulesOnLogicalRouterCommand
com.cloud.agent.api.ModifySshKeysCommand
com.cloud.agent.api.FindLogicalRouterPortCommand
com.cloud.agent.api.PingRoutingWithNwGroupsCommand
org.apache.cloudstack.network.opendaylight.agent.commands.DestroyNetworkCommand
org.apache.cloudstack.network.tungsten.agent.api.ListTungstenFirewallRuleCommand
com.cloud.agent.api.routing.VpnUsersCfgCommand
com.cloud.agent.api.ModifyStoragePoolCommand
org.apache.cloudstack.ca.SetupKeyStoreCommand
com.cloud.agent.api.StartupBrocadeVcsCommand
com.cloud.agent.api.CheckNetworkCommand
org.apache.cloudstack.network.tungsten.agent.api.SetupTungstenVRouterCommand
org.apache.cloudstack.network.tungsten.agent.api.DeleteTungstenServiceGroupCommand
com.cloud.agent.api.CheckVMActivityOnStoragePoolCommand
com.cloud.agent.api.proxy.AllowConsoleAccessCommand
com.cloud.agent.api.RevertToVMSnapshotCommand
com.cloud.agent.api.SetupGuestNetworkCommand
com.cloud.agent.api.baremetal.IpmiBootorResetCommand
com.cloud.agent.api.ManageSnapshotCommand
com.cloud.agent.api.CancelCommand
org.apache.cloudstack.network.tungsten.agent.api.DeleteTungstenDomainCommand
org.apache.cloudstack.storage.command.DettachCommand
org.apache.cloudstack.network.tungsten.agent.api.UpdateTungstenLoadbalancerStatsCommand
org.apache.cloudstack.storage.command.DeleteCommand
org.apache.cloudstack.network.tungsten.agent.api.UpdateTungstenLoadBalancerListenerCommand
org.apache.cloudstack.diagnostics.DiagnosticsCommand
com.cloud.agent.api.SetupCommand
com.cloud.agent.api.SecStorageFirewallCfgCommand
com.cloud.agent.api.CheckS2SVpnConnectionsCommand
org.apache.cloudstack.agent.directdownload.CheckUrlCommand
org.apache.cloudstack.network.tungsten.agent.api.RemoveTungstenNetworkSubnetCommand
com.cloud.agent.api.ShutdownCommand
com.cloud.agent.api.proxy.ProxyCommand
com.cloud.agent.api.MigrateCommand
com.cloud.agent.api.routing.GetRouterMonitorResultsCommand
com.cloud.agent.api.HandleConfigDriveIsoCommand
org.apache.cloudstack.storage.command.DownloadCommand
org.apache.cloudstack.network.tungsten.agent.api.CreateTungstenVirtualMachineCommand
org.apache.cloudstack.network.tungsten.agent.api.DeleteTungstenNetworkCommand
org.apache.cloudstack.network.tungsten.agent.api.CreateTungstenNetworkLoadbalancerCommand
com.cloud.agent.api.CreateNetworkCommand
org.apache.cloudstack.network.tungsten.agent.api.StartupTungstenCommand
com.cloud.agent.api.storage.ListTemplateCommand
com.cloud.agent.api.storage.StorageCommand
org.apache.cloudstack.network.tungsten.agent.api.ListTungstenNicCommand
com.cloud.agent.api.storage.CreateVolumeOVACommand
com.cloud.agent.api.storage.UploadProgressCommand
com.cloud.agent.api.StopCommand
com.cloud.agent.api.ConsoleAccessAuthenticationCommand
org.apache.cloudstack.network.opendaylight.agent.commands.ConfigureNetworkCommand
org.apache.cloudstack.network.tungsten.agent.api.RemoveTungstenTagCommand
org.apache.cloudstack.storage.command.ForgetObjectCmd
com.cloud.agent.api.GetControllerHostsCommand
com.cloud.agent.api.VMSnapshotBaseCommand
org.apache.cloudstack.ca.PostCertificateRenewalCommand
com.cloud.agent.api.BcfCommand
com.cloud.agent.api.CleanupPersistentNetworkResourceCommand
org.apache.cloudstack.network.tungsten.agent.api.CreateTungstenFirewallPolicyCommand
org.apache.cloudstack.network.tungsten.agent.api.ListTungstenRoutingLogicalRouterCommand
com.cloud.agent.api.UpdateBcfRouterCommand
com.cloud.agent.api.DeleteLogicalSwitchPortCommand
org.apache.cloudstack.network.tungsten.agent.api.UpdateLoadBalancerServiceInstanceCommand
com.cloud.agent.api.storage.UploadCommand
com.cloud.agent.api.storage.StorageNfsVersionCommand
org.apache.cloudstack.agent.directdownload.RevokeDirectDownloadCertificateCommand
com.cloud.agent.api.OvsSetupBridgeCommand
com.cloud.agent.api.MigrateWithStorageSendCommand
com.cloud.agent.api.routing.DnsMasqConfigCommand
com.cloud.agent.api.DeleteLogicalRouterPortCommand
org.apache.cloudstack.network.tungsten.agent.api.ListTungstenConnectedNetworkFromLogicalRouterCommand
com.cloud.agent.api.DeleteNetworkCommand
org.apache.cloudstack.storage.command.RevertSnapshotCommand
org.apache.cloudstack.shutdown.command.BaseShutdownManagementServerHostCommand
com.cloud.agent.api.StartCommand
com.cloud.agent.api.PrepareUnmanageVMInstanceCommand
com.cloud.agent.api.ScheduleHostScanTaskCommand
com.cloud.agent.api.storage.CreateCommand
com.cloud.agent.api.BumpUpPriorityCommand
com.cloud.agent.api.GetHostStatsCommand
com.cloud.agent.api.NetworkRulesSystemVmCommand
com.cloud.agent.api.MigrateWithStorageCommand
org.apache.cloudstack.network.tungsten.agent.api.AddTungstenNetworkSubnetCommand
com.cloud.agent.api.BadCommand
com.cloud.agent.api.UnregisterNicCommand
com.cloud.agent.api.routing.NetworkElementCommand
com.cloud.agent.api.GetUnmanagedInstancesCommand
com.cloud.agent.api.ConvertInstanceCommand
org.apache.cloudstack.network.tungsten.agent.api.CreateTungstenNetworkCommand
com.cloud.agent.api.routing.SetMonitorServiceCommand
com.cloud.agent.api.RecurringNetworkUsageCommand
com.cloud.agent.api.DirectNetworkUsageCommand
com.cloud.agent.api.MigrateWithStorageCompleteCommand
com.cloud.agent.api.OvsVpcPhysicalTopologyConfigCommand
com.cloud.agent.api.baremetal.PrepareCreateTemplateCommand
com.cloud.agent.api.storage.AbstractDownloadCommand
org.apache.cloudstack.network.tungsten.agent.api.GetTungstenSecurityGroupCommand
com.cloud.agent.api.StartupBigSwitchBcfCommand
org.apache.cloudstack.network.tungsten.agent.api.GetTungstenNetworkDnsCommand
com.cloud.baremetal.networkservice.PrepareKickstartPxeServerCommand
org.apache.cloudstack.network.tungsten.agent.api.GetTungstenPolicyCommand
com.cloud.agent.api.TransferAgentCommand
org.apache.cloudstack.network.tungsten.agent.api.ListTungstenServiceGroupCommand
com.cloud.agent.api.GetVmConfigCommand
org.apache.cloudstack.network.tungsten.agent.api.DeleteTungstenFirewallPolicyCommand
com.cloud.agent.api.storage.PrepareOVAPackingCommand
org.apache.cloudstack.network.opendaylight.agent.commands.StartupOpenDaylightControllerCommand
com.cloud.agent.api.routing.SetNetworkACLCommand
com.cloud.agent.api.GetVmStatsCommand
org.apache.cloudstack.network.tungsten.agent.api.DeleteTungstenFloatingIpPoolCommand
com.cloud.agent.api.UpdateLogicalSwitchPortCommand
org.apache.cloudstack.network.tungsten.agent.api.RemoveTungstenPolicyRuleCommand
org.apache.cloudstack.network.tungsten.agent.api.CreateTungstenProjectCommand
com.cloud.agent.api.CheckGuestOsMappingCommand
com.cloud.agent.api.ConfigureSharedNetworkVlanIdCommand
com.cloud.agent.api.routing.Site2SiteVpnCfgCommand
org.apache.cloudstack.agent.directdownload.SetupDirectDownloadCertificateCommand
com.cloud.agent.api.routing.CreateLoadBalancerApplianceCommand
com.cloud.agent.api.CreateVMSnapshotCommand
org.apache.cloudstack.network.tungsten.agent.api.DeleteTungstenVmCommand
com.cloud.agent.api.routing.DhcpEntryCommand
com.cloud.agent.api.FenceCommand
com.cloud.agent.api.routing.DestroyLoadBalancerApplianceCommand
com.cloud.agent.api.OvsCreateTunnelCommand
com.cloud.agent.api.MigrateWithStorageReceiveCommand
com.cloud.agent.api.ModifyVmNicConfigCommand
org.apache.cloudstack.network.tungsten.agent.api.DeleteTungstenFloatingIpCommand
com.cloud.agent.api.GetHypervisorGuestOsNamesCommand
org.apache.cloudstack.storage.command.IntroduceObjectCmd
org.apache.cloudstack.network.tungsten.agent.api.DeleteTungstenTagTypeCommand
com.cloud.agent.api.CheckRouterCommand
com.cloud.agent.api.SecStorageSetupCommand
com.cloud.agent.api.routing.CreateIpAliasCommand
com.cloud.agent.api.SecurityGroupRulesCmd
com.cloud.agent.api.routing.GetAutoScaleMetricsCommand
org.apache.cloudstack.agent.directdownload.NfsDirectDownloadCommand
com.cloud.agent.api.AttachIsoCommand
com.cloud.agent.api.storage.CopyVolumeCommand
org.apache.cloudstack.network.tungsten.agent.api.ApplyTungstenPortForwardingCommand
org.apache.cloudstack.diagnostics.PrepareFilesCommand
com.cloud.agent.api.StartupRoutingCommand
org.apache.cloudstack.storage.command.AttachCommand
org.apache.cloudstack.storage.command.CreateObjectCommand
com.cloud.agent.api.StartupExternalLoadBalancerCommand
com.cloud.agent.api.DeleteBcfAttachmentCommand
org.apache.cloudstack.network.tungsten.agent.api.SetTungstenNetworkGatewayCommand
com.cloud.agent.api.ConfigureSharedNetworkUuidCommand
com.cloud.agent.api.routing.SetStaticNatRulesCommand
com.cloud.agent.api.StartupTrafficMonitorCommand
com.cloud.agent.api.CreateVolumeFromVMSnapshotCommand
org.apache.cloudstack.agent.lb.SetupMSListCommand
org.apache.cloudstack.network.tungsten.agent.api.AddTungstenNetworkGatewayToLogicalRouterCommand
com.cloud.agent.api.CacheBcfTopologyCommand
com.cloud.agent.api.DeleteBcfStaticNatCommand
com.cloud.agent.api.routing.DeleteIpAliasCommand
org.apache.cloudstack.network.tungsten.agent.api.AddTungstenVmToSecurityGroupCommand
org.apache.cloudstack.network.tungsten.agent.api.AddTungstenSecurityGroupRuleCommand
com.cloud.agent.api.GetRemoteVmsCommand
org.apache.cloudstack.network.tungsten.agent.api.DeleteTungstenAddressGroupCommand
com.cloud.agent.api.AssociateMacToNetworkCommand
org.apache.cloudstack.network.tungsten.agent.api.UpdateTungstenVrouterConfigCommand
org.apache.cloudstack.agent.directdownload.DirectDownloadCommand
org.apache.cloudstack.network.tungsten.agent.api.DeleteTungstenObjectCommand
com.cloud.agent.api.StartupExternalDhcpCommand
org.apache.cloudstack.network.tungsten.agent.api.RemoveTungstenSecondaryIpAddressCommand
com.cloud.agent.api.ConsoleProxyLoadReportCommand
org.apache.cloudstack.network.tungsten.agent.api.GetTungstenFloatingIpsCommand
com.cloud.agent.api.DeleteLogicalSwitchCommand
com.cloud.agent.api.BackupSnapshotCommand
org.apache.cloudstack.network.tungsten.agent.api.DeleteTungstenRoutingLogicalRouterCommand
org.apache.cloudstack.storage.command.ResignatureCommand
com.cloud.agent.api.ValidateSnapshotCommand
com.cloud.agent.api.SetupPersistentNetworkCommand
org.apache.cloudstack.network.tungsten.agent.api.DeleteTungstenLoadBalancerCommand
org.apache.cloudstack.network.tungsten.agent.api.ClearTungstenNetworkGatewayCommand
com.cloud.agent.api.CreatePrivateTemplateFromSnapshotCommand
com.cloud.agent.api.CheckVirtualMachineCommand
org.apache.cloudstack.network.tungsten.agent.api.CreateTungstenFirewallRuleCommand
com.cloud.agent.api.check.CheckSshCommand
com.cloud.agent.api.CreateBcfRouterCommand
com.cloud.agent.api.StartupCommand
com.cloud.agent.api.CheckHealthCommand
org.apache.cloudstack.diagnostics.CopyToSecondaryStorageCommand
com.cloud.agent.api.DeleteVMSnapshotCommand
org.apache.cloudstack.network.tungsten.agent.api.UpdateTungstenLoadbalancerSslCommand
com.cloud.agent.api.StartupProxyCommand
com.cloud.agent.api.routing.VmDataCommand
com.cloud.agent.api.storage.PrimaryStorageDownloadCommand
org.apache.cloudstack.network.tungsten.agent.api.ListTungstenTagTypeCommand
com.cloud.agent.api.storage.DeleteEntityDownloadURLCommand
com.cloud.agent.api.CreateLogicalRouterCommand
org.apache.cloudstack.network.tungsten.agent.api.ApplyTungstenTagCommand
com.cloud.agent.api.ModifyTargetsCommand
com.cloud.agent.api.CreateLogicalSwitchCommand
com.cloud.agent.api.GetVolumeStatsCommand
org.apache.cloudstack.network.tungsten.agent.api.DeleteTungstenProjectCommand
org.apache.cloudstack.network.tungsten.agent.api.ListTungstenAddressGroupCommand
com.cloud.agent.api.CheckVolumeCommand
com.cloud.agent.api.MaintainCommand
com.cloud.agent.api.GetVncPortCommand
org.apache.cloudstack.network.tungsten.agent.api.GetTungstenNatIpCommand
com.cloud.agent.api.ConfigurePublicIpsOnLogicalRouterCommand
com.cloud.agent.api.CreateLogicalSwitchPortCommand
org.apache.cloudstack.storage.command.browser.ListDataStoreObjectsCommand
org.apache.cloudstack.agent.directdownload.HttpDirectDownloadCommand
org.apache.cloudstack.network.tungsten.agent.api.SetupTfRouteCommand
com.cloud.agent.api.RebootRouterCommand
com.cloud.agent.api.NetScalerImplementNetworkCommand
com.cloud.agent.api.UnPlugNicCommand
org.apache.cloudstack.network.tungsten.agent.api.CreateTungstenDefaultProjectCommand
org.apache.cloudstack.network.tungsten.agent.api.ListTungstenPolicyCommand
com.cloud.agent.api.StartupSecondaryStorageCommand
com.cloud.agent.api.PingStorageCommand
com.cloud.agent.api.routing.AggregationControlCommand
org.apache.cloudstack.storage.command.SyncVolumePathCommand
com.cloud.agent.api.CreateBcfRouterInterfaceCommand
com.cloud.agent.api.OvsFetchInterfaceCommand
org.apache.cloudstack.network.tungsten.agent.api.DeleteTungstenLoadBalancerListenerCommand
org.apache.cloudstack.shutdown.command.CancelShutdownManagementServerHostCommand
com.cloud.agent.api.StartupStorageCommand
com.cloud.agent.api.ChangeAgentCommand
com.cloud.agent.api.UpdateHostPasswordCommand
org.apache.cloudstack.storage.command.AttachPrimaryDataStoreCmd
com.cloud.agent.api.storage.MigrateVolumeCommand
org.apache.cloudstack.network.opendaylight.agent.commands.AddHypervisorCommand
com.cloud.agent.api.ClusterVMMetaDataSyncCommand
com.cloud.agent.api.baremetal.IpmISetBootDevCommand
org.apache.cloudstack.agent.directdownload.MetalinkDirectDownloadCommand
com.cloud.agent.api.StartupNiciraNvpCommand
org.apache.cloudstack.shutdown.command.PrepareForShutdownManagementServerHostCommand
org.apache.cloudstack.network.tungsten.agent.api.DeleteTungstenPolicyCommand
org.apache.cloudstack.storage.command.StorageSubSystemCommand
com.cloud.agent.api.PingCommand
org.apache.cloudstack.network.opendaylight.agent.commands.DestroyPortCommand
com.cloud.agent.api.OvsCreateGreTunnelCommand
com.cloud.agent.api.CreatePrivateTemplateFromVolumeCommand
org.apache.cloudstack.network.tungsten.agent.api.UpdateTungstenLoadBalancerHealthMonitorCommand
org.apache.cloudstack.network.tungsten.agent.api.CreateTungstenTagCommand
com.cloud.agent.api.UpgradeSnapshotCommand
org.apache.cloudstack.network.tungsten.agent.api.UpdateTungstenLoadBalancerPoolCommand
org.apache.cloudstack.network.tungsten.agent.api.DeleteTungstenSecurityGroupCommand
org.apache.cloudstack.network.tungsten.agent.api.ListTungstenNetworkCommand
com.cloud.agent.api.routing.SetSourceNatCommand
com.cloud.agent.api.proxy.StartConsoleProxyAgentHttpHandlerCommand
com.cloud.agent.api.SyncBcfTopologyCommand
com.cloud.agent.api.MigrateVmToPoolCommand
com.cloud.agent.api.OvsDeleteFlowCommand
org.apache.cloudstack.network.tungsten.agent.api.DeleteTungstenVmInterfaceCommand
org.apache.cloudstack.network.tungsten.agent.api.CreateTungstenRoutingLogicalRouterCommand
com.cloud.agent.api.PatchSystemVmCommand
com.cloud.agent.api.routing.UpdateNetworkCommand
com.cloud.agent.api.ReplugNicCommand
com.cloud.agent.api.routing.GlobalLoadBalancerConfigCommand
org.apache.cloudstack.network.tungsten.agent.api.RemoveTungstenNetworkGatewayFromLogicalRouterCommand
com.cloud.agent.api.ComputeChecksumCommand
org.apache.cloudstack.storage.command.CheckDataStoreStoragePolicyComplainceCommand
com.cloud.agent.api.proxy.CheckConsoleProxyLoadCommand
com.cloud.agent.api.StartupPxeServerCommand
com.cloud.agent.api.StartupExternalFirewallCommand
org.apache.cloudstack.network.tungsten.agent.api.AddTungstenSecondaryIpAddressCommand
com.cloud.agent.api.AttachOrDettachConfigDriveCommand
com.cloud.agent.api.StartupOvsCommand
org.apache.cloudstack.storage.command.UploadStatusCommand
com.cloud.agent.api.SetHostParamsCommand

[GutoVeronezi]

@DaanHoogland @vishesh92 I've created PR #8605 to address the POC I'd mentioned .