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gm_alerter.go
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gm_alerter.go
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package main
import (
"fmt"
"os"
"log"
"time"
"syscall"
"os/signal"
"errors"
"strings"
"regexp"
"strconv"
"encoding/json"
"flag"
"github.com/gomodule/redigo/redis"
"github.com/marcsauter/single"
w "github.com/jimlawless/whereami"
// "github.com/davecgh/go-spew/spew"
"github.com/fatih/color"
. "github.com/ShyLionTjmn/mapaux"
. "github.com/ShyLionTjmn/gomapper_aux"
)
const CONFIG_CHECK_INTERVAL=60
const SMS_QUEUE="/var/smsqueue"
const MAIL_QUEUE="/var/mymapper/mail_queue"
const TELEGRAM_QUEUE="/var/mymapper/telegram_queue"
const ERROR_SLEEP= 10
const NORMAL_SLEEP= 1
const REDIS_SOCKET="/tmp/redis.sock"
const REDIS_DB="0"
var red_db string=REDIS_DB
//var globalMutex = &sync.RWMutex{}
//locks this maps:
var data = make(M)
var opt_v int
var opt_1 bool
var opt_m bool
var opt_t bool
var opt_s bool
var opt_q bool
var opt_i int
const NO_i_opt = int(1000000000)
var phone_regex *regexp.Regexp
var power_regex *regexp.Regexp
func init() {
phone_regex = regexp.MustCompile(`^9\d{9}$`)
power_regex = regexp.MustCompile(`(?i)power.*sensor`)
w.WhereAmI()
errors.New("")
strconv.Itoa(0)
color.Unset()
flag.IntVar(&opt_v, "v", 0, "set verbosity level")
flag.BoolVar(&opt_1, "1", false, "run once, for debugging or running from cron, default if -q not set")
flag.BoolVar(&opt_m, "m", false, "send mail, use in production")
flag.BoolVar(&opt_t, "t", false, "send telegram, use in production")
flag.BoolVar(&opt_s, "s", false, "send SMS, use in production")
flag.BoolVar(&opt_q, "q", false, "consume alert queue, use in production")
flag.IntVar(&opt_i, "i", NO_i_opt, "process alert with redis index (0 = oldest, 1 = second oldest, -1 = most recent, -2 = second recent, etc) , implies -1, can combine with -q")
flag.Parse()
if !opt_q { opt_1 = true }
if opt_i != NO_i_opt { opt_1 = true }
}
func parseConfig(redmap map[string]string) (ret M, ret_err error) {
ret = make(M)
alert_keys := make([]string, 0)
defer func() {
r := recover()
if r != nil {
ret = nil
ret_err = errors.New("JSON config structure error")
}
} ()
for key, val := range redmap {
dotpos := strings.Index(key, ".")
if dotpos > 0 && key[:dotpos] == "rule" && len(key[dotpos+1:]) > 0 {
ak, err := ParseAlertRule(val)
if err != nil { return nil, err }
ret.MkM("rules")[ key[dotpos+1:] ] = val
for _, k := range ak {
if IndexOf(alert_keys, k) < 0 {
alert_keys = append(alert_keys, k)
}
}
} else if dotpos > 0 && key[:dotpos] == "group" && len(key[dotpos+1:]) > 0 {
ak, err := ParseAlertRule(val)
if err != nil { return nil, err }
ret.MkM("group_rules")[ key[dotpos+1:] ] = val
for _, k := range ak {
if IndexOf(alert_keys, k) < 0 {
alert_keys = append(alert_keys, k)
}
}
} else if key == "time" {
//skip
} else if key == "config" {
var j interface{}
err := json.Unmarshal([]byte(val), &j)
if err != nil { return nil, err }
root := j.(map[string]interface{})
for l0_key, l0_i := range root {
l0_map := l0_i.(map[string]interface{})
for l1_key, l1_i := range l0_map {
if l1_key == "persons" {
l1_map := l1_i.(map[string]interface{})
for l2_key, l2_i := range l1_map {
l2_map := l2_i.(map[string]interface{})
if v, ok := l2_map["email"]; ok { ret.MkM("user_groups", l0_key, l1_key /*persons*/, l2_key /*userid*/)["email"] = v.(string) }
if v, ok := l2_map["phone"]; ok { ret.MkM("user_groups", l0_key, l1_key /*persons*/, l2_key /*userid*/)["phone"] = v.(string) }
if v, ok := l2_map["telegram"]; ok { ret.MkM("user_groups", l0_key, l1_key /*persons*/, l2_key /*userid*/)["telegram"] = v.(string) }
if v, ok := l2_map["name"]; ok { ret.MkM("user_groups", l0_key, l1_key /*persons*/, l2_key /*userid*/)["name"] = v.(string) }
}
} else if l1_key == "sms_alerts" || l1_key == "mail_alerts" || l1_key == "telegram_alerts" {
l1_slice := l1_i.([]interface{})
ret.MkM("user_groups", l0_key)[l1_key] = make([]M, 0)
for _, l2_i := range l1_slice {
l2_map := l2_i.(map[string]interface{})
g, g_ok := l2_map["group"]
r, r_ok := l2_map["rule"]
a, a_ok := l2_map["action"]
if g_ok && r_ok {
ag := make(M)
ag["group"] = g.(string)
ag["rule"] = r.(string)
if a_ok { ag["action"] = a.(string) }
ret.MkM("user_groups", l0_key)[l1_key] = append(ret.MkM("user_groups", l0_key)[l1_key].([]M), ag)
} else {
return nil, errors.New("Incomplete JSON alerts key "+l0_key+"->"+l1_key)
}
}
} else {
return nil, errors.New("Unknown JSON config key "+l1_key)
}
}
}
} else {
return nil, errors.New("Unknown config key "+key)
}
}
if !ret.EvM("user_groups") { return nil, errors.New("No user groups defined in JSON") }
//check if mentioned groups and rules exists
for _, ug_i := range ret.VM("user_groups") {
ug_h := ug_i.(M)
if ag_i, ok := ug_h.VAe("sms_alerts"); ok {
ag_s := ag_i.([]M)
for _, ag_h := range ag_s {
if ag_h.Vs("group") != "*" && !ret.Evs("group_rules", ag_h.Vs("group")) {
return nil, errors.New("Reference to unknown group rule "+ag_h.Vs("group"))
}
if !ret.Evs("rules", ag_h.Vs("rule")) {
return nil, errors.New("Reference to unknown rule "+ag_h.Vs("rule"))
}
}
}
if ag_i, ok := ug_h.VAe("mail_alerts"); ok {
ag_s := ag_i.([]M)
for _, ag_h := range ag_s {
if ag_h.Vs("group") != "*" && !ret.Evs("group_rules", ag_h.Vs("group")) {
return nil, errors.New("Reference to unknown group rule "+ag_h.Vs("group"))
}
if !ret.Evs("rules", ag_h.Vs("rule")) {
return nil, errors.New("Reference to unknown rule "+ag_h.Vs("rule"))
}
}
}
if ag_i, ok := ug_h.VAe("telegram_alerts"); ok {
ag_s := ag_i.([]M)
for _, ag_h := range ag_s {
if ag_h.Vs("group") != "*" && !ret.Evs("group_rules", ag_h.Vs("group")) {
return nil, errors.New("Reference to unknown group rule "+ag_h.Vs("group"))
}
if !ret.Evs("rules", ag_h.Vs("rule")) {
return nil, errors.New("Reference to unknown rule "+ag_h.Vs("rule"))
}
}
}
}
ret["alert_keys"] = alert_keys
return ret, nil
}
func getMessageText(a map[string]string) (mailSubj string, longMessage string, smsMessage string) {
defer func() {
recover() //just ignore type assertions
} ()
if a["alert_type"] == "dev" {
if a["alert_key"] == "overall_status" {
switch a["overall_status"] {
case "ok":
mailSubj = "Устройство на связи"
longMessage = "Устройство на связи:"
smsMessage = "Устройство на связи"
case "warn":
mailSubj = "Устройство НЕ на связи более 5 минут"
longMessage = "Устройство НЕ на связи более 5 минут:"
smsMessage = "Устройство на связи более 5 минут"
case "error":
mailSubj = "Устройство НЕ на связи более 5 минут"
longMessage = "Устройство НЕ на связи более 5 минут:"
smsMessage = "Устройство на связи более 5 минут"
default:
mailSubj = "Устройство НЕ на связи, статус "+strings.ToUpper(a["overall_status"])
longMessage = "Устройство НЕ на связи, статус "+strings.ToUpper(a["overall_status"])+":"
smsMessage = "Устройство НЕ на связи, статус "+strings.ToUpper(a["overall_status"])
}
} else if a["alert_key"] == "powerState" {
if a["new"] != "1" {
mailSubj = "АВАРИЯ ПИТАНИЯ"
longMessage = "АВАРИЯ ПИТАНИЯ:"
smsMessage = "АВАРИЯ ПИТАНИЯ"
} else {
mailSubj = "Восстановление питания"
longMessage = "Восстановление питания:"
smsMessage = "Восстановление питания"
}
} else {
mailSubj = a["alert_key"]+": "+a["new"]
longMessage = a["alert_key"]+": "+a["new"]+"\nPrev: "+a["old"]
smsMessage = a["alert_key"]+": "+a["new"]
}
} else if a["alert_type"] == "int" {
if a["alert_key"] == "ifOperStatus" {
if power_regex.MatchString(a["ifAlias"]) {
if a["new"] == "1" {
mailSubj = "Восстановление питания (сенсор)"
longMessage = "Восстановление питания (сенсор):"
smsMessage = "Восстановление питания (сенсор)"
} else if a["new"] == "2" {
mailSubj = "АВАРИЯ ПИТАНИЯ (сенсор)"
longMessage = "АВАРИЯ ПИТАНИЯ (сенсор):"
smsMessage = "АВАРИЯ ПИТАНИЯ (сенсор)"
}
} else {
if a["new"] == "1" {
mailSubj = "Интерфейс включился"
longMessage = "Интерфейс включился:"
smsMessage = "Интерфейс включился"
} else if a["new"] == "2" {
mailSubj = "Интерфейс ОТКЛЮЧИЛСЯ"
longMessage = "Интерфейс ОТКЛЮЧИЛСЯ:"
smsMessage = "Интерфейс ОТКЛЮЧИЛСЯ"
}
}
} else {
mailSubj = a["alert_key"]+": "+a["new"]
longMessage = a["alert_key"]+": "+a["new"]+"\nPrev: "+a["old"]
smsMessage = a["alert_key"]+": "+a["new"]
}
mailSubj += " "+a["ifName"]
longMessage += "\nИнтерфейс: "+a["ifName"]
smsMessage += " "+a["ifName"]
if a["ifAlias"] != "" {
mailSubj += " ("+a["ifAlias"]+")"
longMessage += " ("+a["ifAlias"]+")"
smsMessage += " ("+a["ifAlias"]+")"
}
}
mailSubj += " @ "+a["short_name"]+" ("+a["sysLocation"]+")"
longMessage += "\nУстройство: "+a["short_name"]+" ("+a["sysLocation"]+")"
longMessage += "\nDevID: "+a["id"]+" ("+a["data_ip"]+")"
i, err := strconv.ParseInt(a["last_seen"], 10, 64)
if err == nil {
longMessage += "\nБыл доступен: "+time.Unix(i, 0).Format("Mon, 2006 Jan 2 15:04:05 ")
}
i, err = strconv.ParseInt(a["time"], 10, 64)
if err == nil {
longMessage += "\nTimestamp: "+time.Unix(i, 0).Format("Mon, 2006 Jan 2 15:04:05 ")
}
smsMessage += " @ "+a["short_name"]+" ("+a["sysLocation"]+")"
return
}
func mailAlert(emails []string, a map[string]string) {
defer func() {
recover() //just ignore type assertions
} ()
subj, body, _ := getMessageText(a)
if opt_v > 1 {
fmt.Println()
fmt.Println(emails)
fmt.Println("Mail:", subj)
fmt.Println(body)
}
if opt_m {
if _, e := os.Stat(MAIL_QUEUE+"/pause"); e != nil && os.IsNotExist(e) {
for _, email := range emails {
file_name_prefix := MAIL_QUEUE+"/mail."
suffix_i := time.Now().UnixNano()
var fd *os.File
var err error
for {
file_name := file_name_prefix+strconv.FormatInt(suffix_i, 10)
fd, err = os.OpenFile(file_name, os.O_WRONLY|os.O_CREATE|os.O_EXCL, 0600)
if err != nil && os.IsExist(err) {
suffix_i++
} else {
break
}
}
if err != nil {
if opt_v > 0 {
fmt.Println(err.Error())
}
return
}
fmt.Fprintln(fd, email)
fmt.Fprintln(fd, subj)
fmt.Fprintln(fd, body)
fd.Close()
}
}
}
}
func telegramAlert(userids []string, a map[string]string) {
defer func() {
recover() //just ignore type assertions
} ()
_, body, _ := getMessageText(a)
if opt_v > 1 {
fmt.Println()
fmt.Println(userids)
fmt.Println("Telegram:")
fmt.Println(body)
}
if opt_t {
if _, e := os.Stat(TELEGRAM_QUEUE+"/pause"); e != nil && os.IsNotExist(e) {
for _, userid := range userids {
file_name_prefix := TELEGRAM_QUEUE+"/"+userid+"."
suffix_i := time.Now().UnixNano()
var fd *os.File
var err error
for {
file_name := file_name_prefix+strconv.FormatInt(suffix_i, 10)
fd, err = os.OpenFile(file_name, os.O_WRONLY|os.O_CREATE|os.O_EXCL, 0600)
if err != nil && os.IsExist(err) {
suffix_i++
} else {
break
}
}
if err != nil {
if opt_v > 0 {
fmt.Println(err.Error())
}
return
}
fmt.Fprintln(fd, body)
fd.Close()
}
}
}
}
func smsAlert(phones []string, a map[string]string) {
defer func() {
recover() //just ignore type assertions
} ()
_, _, text := getMessageText(a)
if opt_v > 1 {
fmt.Println()
fmt.Println(phones)
fmt.Println("SMS:", text)
}
if opt_s {
if _, e := os.Stat(SMS_QUEUE+"/pause"); e != nil && os.IsNotExist(e) {
for _, phone := range phones {
if phone_regex.MatchString(phone) {
file_name_prefix := SMS_QUEUE+"/"+phone+"."
suffix_i := time.Now().UnixNano()
var fd *os.File
var err error
for {
file_name := file_name_prefix+strconv.FormatInt(suffix_i, 10)
fd, err = os.OpenFile(file_name, os.O_WRONLY|os.O_CREATE|os.O_EXCL, 0600)
if err != nil && os.IsExist(err) {
suffix_i++
} else {
break
}
}
if err != nil {
if opt_v > 0 {
fmt.Println(err.Error())
}
return
}
fmt.Fprintln(fd, text)
fd.Close()
}
}
}
}
}
func processAlert(alert_json string) error {
defer func() {
recover() //just ignore type assertions
} ()
var a map[string]string
jerr := json.Unmarshal([]byte(alert_json), &a)
if jerr != nil { return jerr }
if opt_v > 3 {
j, _ := json.MarshalIndent(a, " ", " ")
fmt.Println()
fmt.Println("Alert:", string(j))
}
//skip pausing or adding new devs
if a["alert_type"] == "dev" && a["alert_key"] == "overall_status" {
if (a["new"] == "ok" && a["old"] == "") ||
(a["new"] == "ok" && a["old"] == "paused") ||
(a["new"] == "paused") ||
false {
//if
if opt_v > 1 {
fmt.Println()
fmt.Println("Ignore by status change: "+a["alert_type"]+" "+a["ifName"]+" @ "+a["short_name"]+" "+a["alert_key"]+" "+a["old"]+" -> "+a["new"]+" time: "+a["time"])
}
return nil
}
} else if a["alert_type"] == "int" && a["overall_status"] != "ok" {
//skip changes with not running devices
if opt_v > 1 {
fmt.Println()
fmt.Println("Ignore by bad dev status: "+a["alert_type"]+" "+a["ifName"]+" @ "+a["short_name"]+" "+a["alert_key"]+" "+a["old"]+" -> "+a["new"]+" time: "+a["time"])
}
return nil
}
host_groups := make([]string, 0)
alert_emails := make([]string, 0)
alert_phones := make([]string, 0)
alert_userids := make([]string, 0)
if group_rules, ok := data.VMe("config", "group_rules"); ok {
for group, rule_i := range group_rules {
if opt_v > 4 {
fmt.Println("Matching against group rule", group, ":")
fmt.Println(rule_i.(string))
fmt.Println()
}
match, err := MatchAlertRule(rule_i.(string), a)
//fmt.Println(match, rule_i.(string))
if err == nil && match {
if opt_v > 4 {
fmt.Println("Matched!")
}
host_groups = append(host_groups, group)
} else {
if opt_v > 4 {
fmt.Println("NOT matched")
}
}
if opt_v > 4 {
fmt.Println()
}
}
}
if opt_v > 3 {
fmt.Println("Host matched groups:", host_groups)
}
if user_groups, ok := data.VMe("config", "user_groups"); ok {
if opt_v > 4 {
fmt.Println("Processing user groups")
}
for ug_id, ug_m := range user_groups {
if opt_v > 4 {
fmt.Println("user group:", ug_id)
}
ug_h := ug_m.(M)
if opt_v > 5 {
fmt.Println("user group config:")
j, _ := json.MarshalIndent(ug_h, " ", " ")
fmt.Println(string(j))
}
if persons_h, ok := ug_h.VMe("persons"); ok {
emails := make([]string, 0)
phones := make([]string, 0)
userids := make([]string, 0)
for _, p_m := range persons_h {
if email, ok := p_m.(M).Vse("email"); ok && IndexOf(emails, email) < 0 {
emails = append(emails, email)
}
if phone, ok := p_m.(M).Vse("phone"); ok && IndexOf(phones, phone) < 0 {
phones = append(phones, phone)
}
if userid, ok := p_m.(M).Vse("telegram"); ok && IndexOf(userids, userid) < 0 {
userids = append(userids, userid)
}
}
if ags_i, ok := data.VAe("config", "user_groups", ug_id, "mail_alerts"); ok && len(emails) > 0 {
if opt_v > 2 {
fmt.Println("Method: mail_alerts")
}
for _, ag_h := range ags_i.([]M) {
if opt_v > 4 {
fmt.Println("Method group/rule pair:")
j, _ := json.MarshalIndent(ag_h, " ", " ")
fmt.Println(string(j))
}
if ag_h.Vs("action") != "ignore" {
if rule, ok := data.Vse("config", "rules", ag_h.Vs("rule")); ok && (ag_h.Vs("group") == "*" || IndexOf(host_groups, ag_h.Vs("group")) >= 0) {
if opt_v > 4 {
fmt.Println("Matching against rule:", rule)
}
match, err := MatchAlertRule(rule, a)
if match && err == nil {
if opt_v > 2 {
fmt.Println("Matched:", ug_id, "mail_alerts", ag_h.Vs("group"), ag_h.Vs("rule"))
}
for _, email := range emails {
alert_emails = StrAppendOnce(alert_emails, email)
}
} else {
if opt_v > 4 {
fmt.Println("NOT matched")
}
}
if ag_h.Vs("action") == "stop" {
if opt_v > 4 {
fmt.Println("break method rules")
}
break
}
} else {
if opt_v > 1 {
fmt.Println("SKIP method group/rule pair")
}
}
}
}
}
if ags_i, ok := data.VAe("config", "user_groups", ug_id, "telegram_alerts"); ok && len(userids) > 0 {
if opt_v > 2 {
fmt.Println("Method: telegram_alerts")
}
for _, ag_h := range ags_i.([]M) {
if opt_v > 4 {
fmt.Println("Method group/rule pair:")
j, _ := json.MarshalIndent(ag_h, " ", " ")
fmt.Println(string(j))
}
if ag_h.Vs("action") != "ignore" {
if rule, ok := data.Vse("config", "rules", ag_h.Vs("rule")); ok && (ag_h.Vs("group") == "*" || IndexOf(host_groups, ag_h.Vs("group")) >= 0) {
if opt_v > 4 {
fmt.Println("Matching against rule:", rule)
}
match, err := MatchAlertRule(rule, a)
if match && err == nil {
if opt_v > 2 {
fmt.Println("Matched:", ug_id, "telegram_alerts", ag_h.Vs("group"), ag_h.Vs("rule"))
}
for _, userid := range userids {
alert_userids = StrAppendOnce(alert_userids, userid)
}
} else {
if opt_v > 4 {
fmt.Println("NOT matched")
}
}
if ag_h.Vs("action") == "stop" {
if opt_v > 4 {
fmt.Println("break method rules")
}
break
}
} else {
if opt_v > 1 {
fmt.Println("SKIP method group/rule pair")
}
}
}
}
}
if ags_i, ok := data.VAe("config", "user_groups", ug_id, "sms_alerts"); ok && len(phones) > 0 {
if opt_v > 2 {
fmt.Println("Method: sms_alerts")
}
for _, ag_h := range ags_i.([]M) {
if opt_v > 4 {
fmt.Println("Method group/rule pair:")
j, _ := json.MarshalIndent(ag_h, " ", " ")
fmt.Println(string(j))
}
if ag_h.Vs("action") != "ignore" {
if rule, ok := data.Vse("config", "rules", ag_h.Vs("rule")); ok && (ag_h.Vs("group") == "*" || IndexOf(host_groups, ag_h.Vs("group")) >= 0) {
if opt_v > 4 {
fmt.Println("Matching against rule:", rule)
}
match, err := MatchAlertRule(rule, a)
if match && err == nil {
if opt_v > 2 {
fmt.Println("Matched:", ug_id, "sms_alerts", ag_h.Vs("group"), ag_h.Vs("rule"))
}
for _, phone := range phones {
alert_phones = StrAppendOnce(alert_phones, phone)
}
} else {
if opt_v > 4 {
fmt.Println("NOT matched")
}
}
if ag_h.Vs("action") == "stop" {
if opt_v > 4 {
fmt.Println("break method rules")
}
break
}
} else {
if opt_v > 1 {
fmt.Println("SKIP method group/rule pair")
}
}
}
}
}
}
if opt_v > 4 {
fmt.Println("")
}
}
}
if len(alert_phones) > 0 { smsAlert(alert_phones, a) }
if len(alert_emails) > 0 { mailAlert(alert_emails, a) }
if len(alert_userids) > 0 { telegramAlert(alert_userids, a) }
if len(alert_phones) == 0 && len(alert_emails) == 0 && len(alert_userids) == 0 {
if opt_v > 1 {
fmt.Println()
fmt.Println("Ignore by no alert methods selected: "+a["alert_type"]+" "+a["ifName"]+" @ "+a["short_name"]+" "+a["alert_key"]+" "+a["old"]+" -> "+a["new"]+" time: "+a["time"])
}
}
return nil
}
func main() {
var err error
single_run := single.New("gm_alerter."+red_db) // add redis_db here later
if err = single_run.CheckLock(); err != nil && err == single.ErrAlreadyRunning {
log.Fatal("another instance of the app is already running, exiting")
} else if err != nil {
// Another error occurred, might be worth handling it as well
log.Fatalf("failed to acquire exclusive app lock: %v", err)
}
defer single_run.TryUnlock()
sig_ch := make(chan os.Signal, 1)
signal.Notify(sig_ch, syscall.SIGHUP)
signal.Notify(sig_ch, syscall.SIGINT)
signal.Notify(sig_ch, syscall.SIGTERM)
signal.Notify(sig_ch, syscall.SIGQUIT)
var red redis.Conn
var config_check_time int64
var config_time string
defer func() { if red != nil { red.Close() } } ()
configState := NewSomeState("config")
redState := NewSomeState("redis")
MAIN_LOOP:
for {
red, err = RedisCheck(red, "unix", REDIS_SOCKET, red_db)
redState.State(red != nil && err == nil, err)
if red != nil && (config_check_time + CONFIG_CHECK_INTERVAL) < time.Now().Unix() {
config_check_time = time.Now().Unix()
var redstr string
redstr, err = redis.String(red.Do("HGET", "alert_config", "time"))
if err == nil && redstr != config_time {
var redmap map[string]string
redmap, err = redis.StringMap(red.Do("HGETALL", "alert_config"))
if err == nil {
var config M
config, err = parseConfig(redmap)
if err == nil {
data["config"] = config
config_time = redstr
}
}
} else if err == redis.ErrNil {
err = errors.New("alert_config or its time is missing")
}
configState.State(err == nil, err)
}
if red != nil && config_time != "" {
var queue_len int
queue_len, err = redis.Int(red.Do("LLEN", "alert"))
if err == nil && queue_len > 0 {
var alert_json string
if opt_i != NO_i_opt {
alert_json, err = redis.String(red.Do("LINDEX", "alert", opt_i))
if err == nil {
err = processAlert(alert_json)
if err == nil && opt_q {
_, err = red.Do("LSET", "alert", opt_i, "DELETE")
if err == nil {
_, err = red.Do("LREM", "alert", 0, "DELETE")
}
}
}
} else if !opt_q {
for i := 0; i < queue_len; i++ {
alert_json, err = redis.String(red.Do("LINDEX", "alert", i))
if err != nil { break }
err = processAlert(alert_json)
if err != nil { break }
}
} else {
for alert_json, err = redis.String(red.Do("LPOP", "alert")); err == nil; alert_json, err = redis.String(red.Do("LPOP", "alert")) {
err = processAlert(alert_json)
if err != nil { break }
}
}
}
if err != nil && err != redis.ErrNil {
if opt_v > 0 {
fmt.Println(err)
}
} else if err == redis.ErrNil {
err = nil
}
}
if opt_1 { break MAIN_LOOP }
sleep_time := time.Duration(NORMAL_SLEEP)*time.Second
if err != nil { sleep_time = time.Duration(ERROR_SLEEP)*time.Second }
if opt_v > 6 {
fmt.Println("Sleep", sleep_time, "seconds")
}
main_timer := time.NewTimer(sleep_time)
select {
case s := <-sig_ch:
main_timer.Stop()
if opt_v > 0 {
fmt.Println("\nmain got signal")
}
if s != syscall.SIGHUP && s != syscall.SIGUSR1 {
break MAIN_LOOP
}
continue MAIN_LOOP
case <- main_timer.C:
continue MAIN_LOOP
}
} //MAIN_LOOP
if !opt_1 {
fmt.Println("main done")
}
}