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73
main.go
73
main.go
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@ -5,12 +5,10 @@ package main
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import (
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import (
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"embed"
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"embed"
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"fmt"
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"os"
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"os"
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"time"
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"time"
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"go.wit.com/dev/alexflint/arg"
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"go.wit.com/dev/alexflint/arg"
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"go.wit.com/lib/hostname"
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"go.wit.com/lib/protobuf/zoopb"
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"go.wit.com/lib/protobuf/zoopb"
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"go.wit.com/log"
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"go.wit.com/log"
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)
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)
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@ -22,32 +20,31 @@ var BUILDTIME string
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var resources embed.FS
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var resources embed.FS
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func main() {
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func main() {
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me = new(zoodStruct)
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var pp *arg.Parser
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me.pp = arg.MustParse(&argv)
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pp = arg.MustParse(&argv)
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if me.pp == nil {
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if pp == nil {
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me.pp.WriteHelp(os.Stdout)
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pp.WriteHelp(os.Stdout)
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os.Exit(0)
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os.Exit(0)
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}
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}
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if argv.Daemon {
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if argv.Daemon {
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// turn off timestamps for STDOUT (systemd adds them)
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// turn off timestamps for STDOUT (systemd adds them)
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log.DaemonMode(true)
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log.DaemonMode(true)
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me.machine, me.fullpath = zoopb.InitDaemon()
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} else {
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me.machine, me.fullpath = zoopb.InitMachine()
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}
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}
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if err := testZoo(); err != nil {
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me = new(stuff)
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log.Info("FAILED TO CONNECT TO ZOOKEEPER: ", err)
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me.urlbase = "http://zookeeper.chap.wit.com:8080"
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log.Info("sleeping for 3 minutes")
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if argv.URL != "" {
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time.Sleep(3 * time.Minute)
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log.Info("USING ARGV URL:", argv.URL)
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os.Exit(0)
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me.urlbase = argv.URL
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}
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}
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me.pollDelay = 3 * time.Second
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me.pollDelay = 3 * time.Second
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me.failcountmax = 20 // die every minute if zookeeper can't be found
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me.failcountmax = 20 // die every minute if zookeeper can't be found
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me.machine = zoopb.InitMachine()
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if argv.Test != nil {
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if argv.Test != nil {
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testURL(me.urlbase, me.machine)
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testURL(me.urlbase, me.machine)
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os.Exit(0)
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os.Exit(0)
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@ -56,52 +53,6 @@ func main() {
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zood() // talks to zookeeper
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zood() // talks to zookeeper
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}
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}
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func testZoo() error {
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var err error
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if argv.URL != "" {
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log.Info("USING ARGV URL:", argv.URL)
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if err = testURL(argv.URL, me.machine); err == nil {
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me.urlbase = argv.URL
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return nil
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}
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}
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zooname := findZookeeper()
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url := fmt.Sprintf("http://%s:8080/", zooname)
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if err = testURL(url, me.machine); err == nil {
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me.urlbase = url
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return nil
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}
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url = fmt.Sprintf("https://%s/", zooname)
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if err = testURL(url, me.machine); err == nil {
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me.urlbase = url
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return nil
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}
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url = "http://zookeeper.wit.com:8080/"
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if err = testURL(url, me.machine); err == nil {
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me.urlbase = url
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return nil
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}
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url = "https://zookeeper.wit.com/"
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if err = testURL(url, me.machine); err == nil {
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me.urlbase = url
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return nil
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}
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return err
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}
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func findZookeeper() string {
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hname, dname, err := hostname.GetDomainname()
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if err != nil {
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log.Info("error with os.Hostname()", hname, dname, err)
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}
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if dname == "" {
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return "zookeeper.wit.com"
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}
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return hostname.Join("zookeeper", dname)
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}
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func testURL(urlbase string, pb *zoopb.Machine) error {
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func testURL(urlbase string, pb *zoopb.Machine) error {
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newpb, wsPB, err := pb.HttpPost(urlbase, "test")
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newpb, wsPB, err := pb.HttpPost(urlbase, "test")
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if err != nil {
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if err != nil {
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@ -6,14 +6,13 @@ package main
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import (
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import (
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"time"
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"time"
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"go.wit.com/dev/alexflint/arg"
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"go.wit.com/lib/protobuf/zoopb"
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"go.wit.com/lib/protobuf/zoopb"
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)
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)
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var me *zoodStruct
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var me *stuff
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// this app's variables
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// this app's variables
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type zoodStruct struct {
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type stuff struct {
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urlbase string // the dns name for the zookeeper
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urlbase string // the dns name for the zookeeper
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hostname string // my hostname
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hostname string // my hostname
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pollDelay time.Duration // how often to report our status
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pollDelay time.Duration // how often to report our status
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@ -21,6 +20,4 @@ type zoodStruct struct {
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machine *zoopb.Machine // populated from protobuf based zoopb
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machine *zoopb.Machine // populated from protobuf based zoopb
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failcount int // how many times we've failed to contact the zookeeper
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failcount int // how many times we've failed to contact the zookeeper
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failcountmax int // after this, exit and let systemd restart the daemon
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failcountmax int // after this, exit and let systemd restart the daemon
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fullpath string // where to save the machine PB file
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pp *arg.Parser // from go-args
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}
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}
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