mirror of
https://code.dumpstack.io/tools/appvm.git
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116 lines
3.0 KiB
Go
116 lines
3.0 KiB
Go
package main
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import "fmt"
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// You may think that you want to rewrite to proper golang structures.
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// Believe me, you shouldn't.
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func generateXML(vmName string, network networkModel, gui bool,
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vmNixPath, reginfo, img, sharedDir string) string {
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devices := ""
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if gui {
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devices = guiDevices
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}
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qemuParams := qemuParamsDefault
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if network == networkQemu {
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qemuParams = qemuParamsWithNetwork
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} else if network == networkLibvirt {
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devices += netDevices
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}
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return fmt.Sprintf(xmlTmpl, vmName, vmNixPath, vmNixPath, vmNixPath,
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reginfo, img, sharedDir, sharedDir, sharedDir, devices, qemuParams)
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}
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var qemuParamsDefault = `
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<qemu:commandline>
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<qemu:arg value='-snapshot'/>
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</qemu:commandline>
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`
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var qemuParamsWithNetwork = `
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<qemu:commandline>
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<qemu:arg value='-device'/>
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<qemu:arg value='e1000,netdev=net0'/>
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<qemu:arg value='-netdev'/>
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<qemu:arg value='user,id=net0'/>
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<qemu:arg value='-snapshot'/>
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</qemu:commandline>
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`
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var netDevices = `
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<interface type='network'>
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<source network='default'/>
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</interface>
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`
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var guiDevices = `
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<!-- Graphical console -->
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<graphics type='spice' autoport='yes'>
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<listen type='address'/>
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<image compression='off'/>
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</graphics>
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<!-- Guest additionals support -->
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<channel type='spicevmc'>
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<target type='virtio' name='com.redhat.spice.0'/>
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</channel>
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<video>
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<model type='qxl' ram='524288' vram='524288' vgamem='262144' heads='1' primary='yes'/>
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<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
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</video>
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`
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var xmlTmpl = `
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<domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>
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<name>%s</name>
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<memory unit='GiB'>2</memory>
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<currentMemory unit='GiB'>1</currentMemory>
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<vcpu>4</vcpu>
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<os>
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<type arch='x86_64'>hvm</type>
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<kernel>%s/kernel</kernel>
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<initrd>%s/initrd</initrd>
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<cmdline>loglevel=4 init=%s/init %s</cmdline>
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</os>
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<features>
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<acpi></acpi>
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</features>
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<clock offset='utc'/>
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<on_poweroff>destroy</on_poweroff>
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<on_reboot>restart</on_reboot>
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<on_crash>destroy</on_crash>
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<devices>
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<!-- Fake (because -snapshot) writeback image -->
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<disk type='file' device='disk'>
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<driver name='qemu' type='qcow2' cache='writeback' error_policy='report'/>
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<source file='%s'/>
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<target dev='vda' bus='virtio'/>
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</disk>
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<!-- filesystems -->
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<filesystem type='mount' accessmode='passthrough'>
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<source dir='/nix/store'/>
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<target dir='store'/>
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<readonly/>
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</filesystem>
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<filesystem type='mount' accessmode='mapped'>
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<source dir='%s'/>
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<target dir='xchg'/> <!-- workaround for nixpkgs/nixos/modules/virtualisation/qemu-vm.nix -->
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</filesystem>
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<filesystem type='mount' accessmode='mapped'>
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<source dir='%s'/>
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<target dir='shared'/> <!-- workaround for nixpkgs/nixos/modules/virtualisation/qemu-vm.nix -->
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</filesystem>
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<filesystem type='mount' accessmode='mapped'>
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<source dir='%s'/>
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<target dir='home'/>
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</filesystem>
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%s
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</devices>
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%s
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</domain>
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`
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