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7 changed files with 165 additions and 110 deletions

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@ -9,7 +9,7 @@ REDOMOD = $(shell if [ -e go.sum ]; then echo go.sum exists; else GO111MODULE=
all: build
./zood --version
./zood test
./zood
build: goimports
GO111MODULE=off go build -v -x \

2
README
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@ -1,3 +1 @@
This is the zookeeper daemon.
It is simple. It's just designed to keep packages up to date.

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@ -16,15 +16,11 @@ import (
var argv args
type args struct {
Test *EmptyCmd `arg:"subcommand:test" help:"New to forge? This is for you.'"`
Daemon bool `arg:"--daemon" default:"false" help:"run in daemon mode"`
Port int `arg:"--port" default:"2521" help:"port to run on"`
URL string `arg:"--url" help:"url to use"`
}
type EmptyCmd struct {
}
func (args) Version() string {
return "zood " + VERSION + " Built on: " + BUILDTIME
}

119
http.go Normal file
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@ -0,0 +1,119 @@
// Copyright 2017-2025 WIT.COM Inc. All rights reserved.
// Use of this source code is governed by the GPL 3.0
package main
import (
"fmt"
"io/ioutil"
"net/http"
"os"
"strings"
"go.wit.com/log"
)
// remove '?' part and trailing '/'
func cleanURL(url string) string {
url = "/" + strings.Trim(url, "/")
return url
}
func okHandler(w http.ResponseWriter, r *http.Request) {
log.Info("Got URL Path: ", r.URL.Path)
route := cleanURL(r.URL.Path)
domname := r.URL.Query().Get("domain")
flag := r.URL.Query().Get("flag")
msg, err := ioutil.ReadAll(r.Body) // Read the body as []byte
if err != nil {
fmt.Fprintln(w, "ReadAll() error =", err)
return
}
log.Info("Got URL msg:", string(msg))
if route == "/" {
fmt.Fprintln(w, "OK")
return
}
// exit the virtigo daemon & have systemd restart it
// this can happen & when it does, access to
// to libvirtd will hang (aka: virsh list will hang)
// One way to trigger this is to not properly close
// domain sockets opened from go-qemu/hypervisor
// it's a good idea in any case so leave it here
if route == "/kill" {
log.Warn("KILLED")
fmt.Fprintln(w, "KILLED")
os.Exit(-1)
return
}
// curl http://localhost:2520/import?domain=foo.bar.com
if route == "/import" {
fmt.Fprint(w, "import domain:", domname)
return
}
// toggle logging flags
if route == "/flag" {
log.HttpMode(w)
defer log.HttpMode(nil)
log.Info("going to toggle flag:", flag)
switch flag {
case "PING":
if PING.Enabled() {
log.Log(NOW, "toogle PING false")
PING.SetBool(false)
} else {
log.Log(NOW, "toogle PING true")
PING.SetBool(true)
}
default:
log.Info("unknown looging flag:", flag)
}
return
}
if route == "/favicon.ico" {
writeFile(w, "ipv6.png")
return
}
log.Warn("BAD URL =", route)
}
func writeFile(w http.ResponseWriter, filename string) {
// fmt.Fprintln(w, "GOT TEST?")
fullname := "resources/" + filename
pfile, err := resources.ReadFile(fullname)
if err != nil {
log.Println("ERROR:", err)
// w.Write(pfile)
return
}
var repohtml string
repohtml = string(pfile)
if filename == "goReference.svg" {
w.Header().Set("Content-Type", "image/svg+xml")
}
fmt.Fprintln(w, repohtml)
log.Println("writeFile() found internal file:", filename)
}
// starts and sits waiting for HTTP requests
func startHTTP() {
http.HandleFunc("/", okHandler)
p := fmt.Sprintf(":%d", argv.Port)
log.Println("Running on port", p)
err := http.ListenAndServe(p, nil)
if err != nil {
log.Println("Error starting server:", err)
}
}

92
main.go
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@ -5,12 +5,11 @@ package main
import (
"embed"
"fmt"
"os"
"time"
"go.wit.com/dev/alexflint/arg"
"go.wit.com/lib/hostname"
"go.wit.com/lib/protobuf/forgepb"
"go.wit.com/lib/protobuf/zoopb"
"go.wit.com/log"
)
@ -22,94 +21,35 @@ var BUILDTIME string
var resources embed.FS
func main() {
me = new(zoodStruct)
me.pp = arg.MustParse(&argv)
var pp *arg.Parser
pp = arg.MustParse(&argv)
if me.pp == nil {
me.pp.WriteHelp(os.Stdout)
if pp == nil {
pp.WriteHelp(os.Stdout)
os.Exit(0)
}
if argv.Daemon {
// turn off timestamps for STDOUT (systemd adds them)
log.DaemonMode(true)
me.machine, me.fullpath = zoopb.InitDaemon()
} else {
me.machine, me.fullpath = zoopb.InitMachine()
}
if err := testZoo(); err != nil {
log.Info("FAILED TO CONNECT TO ZOOKEEPER: ", err)
log.Info("sleeping for 3 minutes")
time.Sleep(3 * time.Minute)
os.Exit(0)
me = new(stuff)
me.urlbase = "http://zookeeper.grid.wit.com:8080"
if argv.URL != "" {
log.Info("USING ARGV URL:", argv.URL)
me.urlbase = argv.URL
}
me.pollDelay = 3 * time.Second
me.failcountmax = 20 // die every minute if zookeeper can't be found
if argv.Test != nil {
testURL(me.urlbase, me.machine)
os.Exit(0)
}
// me.machine.ConfigLoad()
zood() // talks to zookeeper
}
me.forge = forgepb.InitPB()
me.machine = zoopb.InitMachine()
func testZoo() error {
var err error
if argv.URL != "" {
log.Info("USING ARGV URL:", argv.URL)
if err = testURL(argv.URL, me.machine); err == nil {
me.urlbase = argv.URL
return nil
}
}
go NewWatchdog()
zooname := findZookeeper()
url := fmt.Sprintf("http://%s:8080/", zooname)
if err = testURL(url, me.machine); err == nil {
me.urlbase = url
return nil
}
url = fmt.Sprintf("https://%s/", zooname)
if err = testURL(url, me.machine); err == nil {
me.urlbase = url
return nil
}
url = "http://zookeeper.wit.com:8080/"
if err = testURL(url, me.machine); err == nil {
me.urlbase = url
return nil
}
url = "https://zookeeper.wit.com/"
if err = testURL(url, me.machine); err == nil {
me.urlbase = url
return nil
}
return err
}
func findZookeeper() string {
hname, dname, err := hostname.GetDomainname()
if err != nil {
log.Info("error with os.Hostname()", hname, dname, err)
}
if dname == "" {
return "zookeeper.wit.com"
}
return hostname.Join("zookeeper", dname)
}
func testURL(urlbase string, pb *zoopb.Machine) error {
newpb, wsPB, err := pb.HttpPost(urlbase, "test")
if err != nil {
log.Info("got error:", err)
return err
}
wsPB.DumpClient()
newpb.Dump()
log.Info("got error:", err)
return err
startHTTP()
}

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@ -6,21 +6,20 @@ package main
import (
"time"
"go.wit.com/dev/alexflint/arg"
"go.wit.com/lib/protobuf/forgepb"
"go.wit.com/lib/protobuf/zoopb"
)
var me *zoodStruct
var me *stuff
// this app's variables
type zoodStruct struct {
type stuff struct {
urlbase string // the dns name for the zookeeper
hostname string // my hostname
pollDelay time.Duration // how often to report our status
dog *time.Ticker // the watchdog timer
machine *zoopb.Machine // populated from protobuf based zoopb
forge *forgepb.Forge // handle to forge
failcount int // how many times we've failed to contact the zookeeper
failcountmax int // after this, exit and let systemd restart the daemon
fullpath string // where to save the machine PB file
pp *arg.Parser // from go-args
}

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@ -16,26 +16,10 @@ func TimeFunction(f func()) time.Duration {
return time.Since(startTime) // Calculate the elapsed time
}
// sends updates to zookeeper
func zood() {
func NewWatchdog() {
me.dog = time.NewTicker(me.pollDelay)
defer me.dog.Stop()
done := make(chan bool)
for {
select {
case <-done:
fmt.Println("Done!")
return
case _ = <-me.dog.C:
s := me.machine.UpdatePackages()
me.failcount += 1
sendMachine(s)
if me.failcount > 20 {
os.Exit(0)
}
}
}
/*
// this example would exit/destroy the ticker in 10 seconds
go func() {
@ -43,4 +27,23 @@ func zood() {
done <- true
}()
*/
for {
select {
case <-done:
fmt.Println("Done!")
return
case _ = <-me.dog.C:
// log.Info("Watchdog() ticked", me.zookeeper, "Current time: ", t)
s := me.machine.UpdatePackages()
// pingStatus()
me.failcount += 1
sendMachine(s)
if me.failcount > 20 {
os.Exit(0)
}
// h.pollHypervisor()
// h.Scan()
}
}
}