Traitement des évènements
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179
cmd/qemu/events/lifecycle.go
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179
cmd/qemu/events/lifecycle.go
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package events
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import (
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"context"
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"fmt"
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"log"
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"strconv"
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"strings"
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"time"
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"deevirt.fr/compute/pkg/amqp"
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clientv3 "go.etcd.io/etcd/client/v3"
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"libvirt.org/go/libvirt"
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)
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func Lifecyle(c *libvirt.Connect, d *libvirt.Domain, e *libvirt.DomainEventLifecycle) {
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var detail, event string
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domainID, _ := d.GetUUIDString()
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// Read Etcd URI
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config, err := Config()
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if err != nil {
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log.Fatalf("Fail to read file: %v", err)
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}
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etcd, err := clientv3.New(clientv3.Config{
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Endpoints: strings.Split(config.Section("etcd").Key("uri").String(), ","),
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DialTimeout: 5 * time.Second,
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})
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if err != nil {
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log.Fatalf("Error connexion to etcd: %v", err)
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}
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defer etcd.Close()
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ctx, _ := context.WithTimeout(context.Background(), 5*time.Second)
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switch e.Event {
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case libvirt.DOMAIN_EVENT_DEFINED:
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event = "defined"
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etcd.Put(ctx, "/cluster/"+ClusterID()+"/host/"+MachineID()+"/qemu/"+domainID, "")
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switch libvirt.DomainEventDefinedDetailType(e.Detail) {
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case libvirt.DOMAIN_EVENT_DEFINED_ADDED:
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detail = "added"
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case libvirt.DOMAIN_EVENT_DEFINED_UPDATED:
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detail = "updated"
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case libvirt.DOMAIN_EVENT_DEFINED_RENAMED:
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detail = "renamed"
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case libvirt.DOMAIN_EVENT_DEFINED_FROM_SNAPSHOT:
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detail = "snapshot"
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default:
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detail = "unknown"
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}
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case libvirt.DOMAIN_EVENT_UNDEFINED:
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event = "undefined"
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etcd.Delete(ctx, "/cluster/"+ClusterID()+"/host/"+MachineID()+"/qemu/"+domainID)
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switch libvirt.DomainEventUndefinedDetailType(e.Detail) {
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case libvirt.DOMAIN_EVENT_UNDEFINED_REMOVED:
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detail = "removed"
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case libvirt.DOMAIN_EVENT_UNDEFINED_RENAMED:
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detail = "renamed"
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default:
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detail = "unknown"
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}
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case libvirt.DOMAIN_EVENT_STARTED:
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event = "started"
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etcd.Put(ctx, "/cluster/"+ClusterID()+"/domain/"+domainID+"/state", "2")
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switch libvirt.DomainEventStartedDetailType(e.Detail) {
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case libvirt.DOMAIN_EVENT_STARTED_BOOTED:
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detail = "booted"
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case libvirt.DOMAIN_EVENT_STARTED_MIGRATED:
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detail = "migrated"
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case libvirt.DOMAIN_EVENT_STARTED_RESTORED:
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detail = "restored"
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case libvirt.DOMAIN_EVENT_STARTED_FROM_SNAPSHOT:
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detail = "snapshot"
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case libvirt.DOMAIN_EVENT_STARTED_WAKEUP:
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detail = "wakeup"
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default:
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detail = "unknown"
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}
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case libvirt.DOMAIN_EVENT_SUSPENDED:
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event = "suspended"
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etcd.Put(ctx, "/cluster/"+ClusterID()+"/domain/"+domainID+"/state", "3")
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switch libvirt.DomainEventSuspendedDetailType(e.Detail) {
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case libvirt.DOMAIN_EVENT_SUSPENDED_PAUSED:
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detail = "paused"
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case libvirt.DOMAIN_EVENT_SUSPENDED_MIGRATED:
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detail = "migrated"
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case libvirt.DOMAIN_EVENT_SUSPENDED_IOERROR:
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detail = "I/O error"
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case libvirt.DOMAIN_EVENT_SUSPENDED_WATCHDOG:
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detail = "watchdog"
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case libvirt.DOMAIN_EVENT_SUSPENDED_RESTORED:
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detail = "restored"
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case libvirt.DOMAIN_EVENT_SUSPENDED_FROM_SNAPSHOT:
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detail = "snapshot"
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case libvirt.DOMAIN_EVENT_SUSPENDED_API_ERROR:
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detail = "api error"
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case libvirt.DOMAIN_EVENT_SUSPENDED_POSTCOPY:
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detail = "postcopy"
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case libvirt.DOMAIN_EVENT_SUSPENDED_POSTCOPY_FAILED:
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detail = "postcopy failed"
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default:
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detail = "unknown"
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}
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case libvirt.DOMAIN_EVENT_RESUMED:
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event = "resumed"
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etcd.Put(ctx, "/cluster/"+ClusterID()+"/domain/"+domainID+"/state", "4")
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switch libvirt.DomainEventResumedDetailType(e.Detail) {
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case libvirt.DOMAIN_EVENT_RESUMED_UNPAUSED:
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detail = "unpaused"
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case libvirt.DOMAIN_EVENT_RESUMED_MIGRATED:
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detail = "migrated"
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case libvirt.DOMAIN_EVENT_RESUMED_FROM_SNAPSHOT:
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detail = "snapshot"
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case libvirt.DOMAIN_EVENT_RESUMED_POSTCOPY:
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detail = "postcopy"
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case libvirt.DOMAIN_EVENT_RESUMED_POSTCOPY_FAILED:
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detail = "postcopy failed"
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default:
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detail = "unknown"
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}
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case libvirt.DOMAIN_EVENT_STOPPED:
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event = "stopped"
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etcd.Put(ctx, "/cluster/"+ClusterID()+"/domain/"+domainID+"/state", "5")
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switch libvirt.DomainEventStoppedDetailType(e.Detail) {
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case libvirt.DOMAIN_EVENT_STOPPED_SHUTDOWN:
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detail = "shutdown"
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case libvirt.DOMAIN_EVENT_STOPPED_DESTROYED:
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detail = "destroyed"
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case libvirt.DOMAIN_EVENT_STOPPED_CRASHED:
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detail = "crashed"
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case libvirt.DOMAIN_EVENT_STOPPED_MIGRATED:
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detail = "migrated"
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case libvirt.DOMAIN_EVENT_STOPPED_SAVED:
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detail = "saved"
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case libvirt.DOMAIN_EVENT_STOPPED_FAILED:
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detail = "failed"
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case libvirt.DOMAIN_EVENT_STOPPED_FROM_SNAPSHOT:
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detail = "snapshot"
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default:
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detail = "unknown"
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}
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case libvirt.DOMAIN_EVENT_SHUTDOWN:
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event = "shutdown"
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etcd.Put(ctx, "/cluster/"+ClusterID()+"/domain/"+domainID+"/state", "6")
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switch libvirt.DomainEventShutdownDetailType(e.Detail) {
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case libvirt.DOMAIN_EVENT_SHUTDOWN_FINISHED:
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detail = "finished"
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case libvirt.DOMAIN_EVENT_SHUTDOWN_GUEST:
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detail = "guest"
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case libvirt.DOMAIN_EVENT_SHUTDOWN_HOST:
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detail = "host"
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default:
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detail = "unknown"
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}
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default:
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event = "unknown"
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}
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// AMQP
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amqp.Publisher([]byte(strconv.FormatInt(int64(e.Event), 10)))
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fmt.Printf("Domain event=%q detail=%q\n", event, detail)
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}
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74
cmd/qemu/events/server.go
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74
cmd/qemu/events/server.go
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@ -0,0 +1,74 @@
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package events
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import (
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"encoding/hex"
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"fmt"
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"log"
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"os"
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"github.com/denisbrodbeck/machineid"
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"gopkg.in/ini.v1"
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"libvirt.org/go/libvirt"
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)
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func Config() (*ini.File, error) {
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return ini.Load("/etc/deevirt/config.ini")
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}
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var ClusterID = func() string {
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config, _ := Config()
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return config.Section("").Key("id").String()
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}
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var MachineID = func() string {
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id, err := machineid.ID()
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if err != nil {
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log.Fatal(err)
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}
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u, _ := hex.DecodeString(id)
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return fmt.Sprintf("%x-%x-%x-%x-%x\n", u[:4], u[4:6], u[6:8], u[8:10], u[10:])
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}
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func agentLifecycle(c *libvirt.Connect, d *libvirt.Domain, event *libvirt.DomainEventAgentLifecycle) {
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println(event.State)
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println(event.Reason)
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}
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func graphics(c *libvirt.Connect, d *libvirt.Domain, event *libvirt.DomainEventGraphics) {
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println(event.String())
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}
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func reboot(c *libvirt.Connect, d *libvirt.Domain) {
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}
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func watchdog(c *libvirt.Connect, d *libvirt.Domain, event *libvirt.DomainEventWatchdog) {
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println(event.String())
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}
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func Server() {
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err := libvirt.EventRegisterDefaultImpl()
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if err != nil {
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log.Fatalf("Échec d'EventRegisterDefaultImpl: %v", err)
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os.Exit(0)
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}
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conn, err := libvirt.NewConnect("qemu:///system")
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if err != nil {
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log.Println("Connexion Error")
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}
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defer conn.Close()
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conn.SetKeepAlive(5, 3)
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conn.DomainEventAgentLifecycleRegister(nil, agentLifecycle)
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conn.DomainEventGraphicsRegister(nil, graphics)
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conn.DomainEventLifecycleRegister(nil, Lifecyle)
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conn.DomainEventRebootRegister(nil, reboot)
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conn.DomainEventWatchdogRegister(nil, watchdog)
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for {
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libvirt.EventRunDefaultImpl()
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}
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}
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