111 lines
2.5 KiB
Go
111 lines
2.5 KiB
Go
package main
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import (
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"errors"
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"fmt"
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"os"
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"path/filepath"
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"time"
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pb "go.wit.com/lib/protobuf/virtbuf"
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"go.wit.com/log"
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)
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var ErrorNoFile error = errors.New("missing file")
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var ErrorParse error = errors.New("invalid json")
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// something is wrong somewhere and sometimes the
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// protobuf json files get written out with garbage
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func cfgfile() {
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err := readConfigFile("virtigo.json")
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if err == nil {
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return
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}
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if err == ErrorParse {
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os.Exit(-1)
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}
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err = readConfigFile("virtigo.json.last")
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if err == nil {
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log.Info("read json failed", err)
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os.Exit(-1)
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}
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if err == ErrorNoFile {
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log.Info("no config file created yet", err)
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os.Exit(-1)
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}
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}
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func readConfigFile(filename string) error {
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me.cluster = new(pb.Cluster)
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fullname := filepath.Join(os.Getenv("VIRTIGO_HOME"), filename)
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pfile, err := os.ReadFile(fullname)
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if err != nil {
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log.Info("open config file :", err)
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return ErrorNoFile
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}
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err = me.cluster.UnmarshalJSON(pfile)
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if err != nil {
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log.Info("read json failed", err)
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os.Exit(-1)
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return ErrorParse
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}
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// initialize each hypervisor
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for _, pbh := range me.cluster.Hypervisors {
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h := findHypervisor(pbh.Hostname)
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if h != nil {
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continue
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}
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// this is a new unknown droplet (not in the config file)
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h = new(HyperT)
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h.pb = pbh
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h.lastpoll = time.Now()
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me.hypers = append(me.hypers, h)
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log.Log(EVENT, "config new hypervisors", h.pb.Hostname)
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}
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// initialize values for each droplet
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for _, pbd := range me.cluster.Droplets {
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d := findDroplet(pbd.Hostname)
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if d != nil {
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continue
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}
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// this is a new unknown droplet (not in the config file)
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d = new(DropletT)
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d.pb = pbd
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me.droplets = append(me.droplets, d)
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log.Log(EVENT, "config new droplet", d.pb.Hostname, d.pb.StartState, d.pb.PreferredHypervisor)
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}
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return nil
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}
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func writeConfigFile() {
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fullname := filepath.Join(os.Getenv("VIRTIGO_HOME"), "virtigo.json")
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cfgfile, err := os.OpenFile(fullname, os.O_RDWR|os.O_CREATE, 0666)
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defer cfgfile.Close()
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if err != nil {
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log.Info("open config file :", err)
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return
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}
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json := me.cluster.FormatJSON()
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fmt.Fprintln(cfgfile, json)
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log.Info("Write:", fullname, "OK")
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}
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func writeConfigFileDroplets() {
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fullname := filepath.Join(os.Getenv("VIRTIGO_HOME"), "droplets.text")
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cfgfile, err := os.OpenFile(fullname, os.O_RDWR|os.O_CREATE, 0666)
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defer cfgfile.Close()
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if err != nil {
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log.Info("open config file :", err)
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return
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}
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// text := me.cluster.Droplets.FormatTEXT()
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text := me.cluster.FormatTEXT()
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fmt.Fprintln(cfgfile, text)
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log.Info("Write:", fullname, "OK")
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}
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