111 lines
3.5 KiB
Go
111 lines
3.5 KiB
Go
// Copyright 2016 The go-qemu Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package main
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import (
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"fmt"
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"log"
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"github.com/digitalocean/go-qemu/hypervisor"
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"github.com/digitalocean/go-qemu/qemu"
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)
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// get the list of domains from libvirt
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func pollHypervisor(hv *hypervisor.Hypervisor) string {
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var out string
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// fmt.Printf("\n**********Domains**********\n")
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domains, err := hv.Domains()
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if err != nil {
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log.Fatalf("Unable to get domains from hypervisor: %v", err)
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}
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for _, dom := range domains {
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var name string
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var err error
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var drives []string
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var status qemu.Status
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name = dom.Name
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// fmt.Printf("%s\n", dom.Name)
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status, err = dom.Status()
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if err != nil {
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fmt.Println(name, status, err)
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continue
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}
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// fmt.Printf("\nStatus: %s\n", status)
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/*
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if status == qemu.StatusRunning {
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// getBlockDevices(dom)
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// fmt.Println(name, status, err)
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}
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*/
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blockDevices, err := dom.BlockDevices()
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for _, blockDevice := range blockDevices {
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drives = append(drives, blockDevice.Device)
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drives = append(drives, blockDevice.Inserted.Driver)
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drives = append(drives, blockDevice.Inserted.File)
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// fmt.Printf("%20s %8s %30s\n",
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// blockDevice.Device, blockDevice.Inserted.Driver, blockDevice.Inserted.File)
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}
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if status == qemu.StatusRunning {
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fmt.Println("ON ", name, drives)
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out += "ON " + name + "\n"
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} else {
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fmt.Println("OFF", status, name, drives)
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out += "OFF " + name + "\n"
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}
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// Close the domain to clean up its resources and underlying monitor.
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// todo: store dom and reuse it? not closing it hangs libvirt eventually because it leaves dangling
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// connects that rack up and all block in virNetSocketReadWire:1781
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// probably this doesn't matter because NOTHING HERE IS DONE IN HIGH FREQUENCY EVER.
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// domU changes hardly ever happen
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if err := dom.Close(); err != nil {
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log.Fatalf("failed to close domain: %v", err)
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}
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}
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return out
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}
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/*
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func displayBlockDevices(domain *qemu.Domain) {
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// var []blks string
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blockDevices, err := domain.BlockDevices()
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if err != nil {
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log.Fatalf("Error getting blockDevices: %v\n", blockDevices)
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}
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fmt.Printf("\n[ BlockDevices ]\n")
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fmt.Printf("========================================================================\n")
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fmt.Printf("%20s %8s %30s\n", "Device", "Driver", "File")
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fmt.Printf("========================================================================\n")
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for _, blockDevice := range blockDevices {
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fmt.Printf("%20s %8s %30s\n",
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blockDevice.Device, blockDevice.Inserted.Driver, blockDevice.Inserted.File)
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}
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}
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func displayPCIDevices(domain *qemu.Domain) {
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pciDevices, err := domain.PCIDevices()
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if err != nil {
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log.Fatalf("Error getting PCIDevices: %v\n", pciDevices)
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}
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fmt.Printf("\n[ PCIDevices ]\n")
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fmt.Printf("======================================\n")
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fmt.Printf("%10s %20s\n", "[ID]", "[Description]")
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fmt.Printf("======================================\n")
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for _, pciDevice := range pciDevices {
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fmt.Printf("[%10s] [%20s]\n", pciDevice.QdevID, pciDevice.ClassInfo.Desc)
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}
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}
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*/
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