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|
package main
import (
"bytes"
"flag"
"fmt"
"gopkg.in/yaml.v3"
"os"
"time"
"riedstra.dev/go/checkup"
)
var Version = "Development"
// jobResponse lets us return a bit more info from each of the jobs
// and track how the response has changed
type jobResponse struct {
Id string
Message string
Err error
Time time.Time
}
type Config struct {
RocketChatURL string `yaml:"RocketChatURL"`
DiscordURL string `yaml:"DiscordURL"`
DefaultCertPort string `yaml:"DefaultCertPort"`
CertWindow int `yaml:"CertWindow"`
CheckCerts map[string]*string `yaml:"CheckCerts"`
ExpectedStatusCode int `yaml:"ExpectedStatusCode"`
StatusChecks map[string]*int `yaml:"StatusChecks"`
StatusChecksNoRdr map[string]*int `yaml:"StatusChecksNoRedirect"`
Workers int `yaml:"Workers"`
Interval int `yaml:"Interval"`
RenotifyInterval int `yaml:"RenotifyInterval"`
HTTPTimeout int `yaml:"HTTPTimeout"`
}
func ReadConfig(fn string, conf *Config) error {
fh, err := os.Open(fn)
if err != nil {
return err
}
dec := yaml.NewDecoder(fh)
err = dec.Decode(conf)
return err
}
func jobNotifyDedup(conf *Config, prevJobs, newJobs map[string]*jobResponse) {
buf := &bytes.Buffer{}
for id, resp := range newJobs {
oldresp, ok := prevJobs[id]
if !ok {
buf.Write([]byte(resp.Message))
buf.Write([]byte{'\n'})
continue
}
if oldresp.Message == resp.Message {
// This isn't new, adjust accordingly
newJobs[id] = prevJobs[id]
if time.Now().After(
oldresp.Time.Add(time.Duration(conf.RenotifyInterval) * time.Second)) {
// Reset the time
newJobs[id] = resp
buf.Write([]byte(
"still active --> " + resp.Message,
))
buf.Write([]byte{'\n'})
}
continue
}
buf.Write([]byte(
oldresp.Message + " now --> " + resp.Message,
))
buf.Write([]byte{'\n'})
}
for id, resp := range prevJobs {
_, ok := newJobs[id]
if !ok {
buf.Write([]byte(
"[CLEARED]: " + resp.Message + "\n",
))
}
}
fmt.Print(string(buf.Bytes()))
notify(conf, buf.Bytes())
}
func jobNotify(conf *Config, jobs map[string]*jobResponse) {
buf := &bytes.Buffer{}
for _, resp := range jobs {
buf.Write([]byte(resp.Message))
buf.Write([]byte{'\n'})
}
notify(conf, buf.Bytes())
}
func notify(conf *Config, b []byte) {
if len(b) >= 1 {
if conf.RocketChatURL != "" {
err := checkup.SendRocketChatAlert(conf.RocketChatURL, string(b))
if err != nil {
fmt.Fprintln(os.Stderr, string(b))
fmt.Fprintf(os.Stderr,
"When sending webhook for rocketchat: %s\n", err)
}
}
if conf.DiscordURL != "" {
err := checkup.SendDiscordAlert(conf.DiscordURL, string(b))
if err != nil {
fmt.Fprintln(os.Stderr, string(b))
fmt.Fprintf(os.Stderr,
"When sending webhook for discord: %s\n", err)
}
}
}
}
func main() {
fl := flag.NewFlagSet("checkup", flag.ExitOnError)
confFn := fl.String("c", "config.yml", "Configuration file path")
version := fl.Bool("v", false, "Print version and exit")
once := fl.Bool("o", false, "Run once then exit")
debug := fl.Bool("d", false, "Dump the config to stderr")
_ = fl.Parse(os.Args[1:])
if *version {
fmt.Println(Version)
os.Exit(0)
}
// Defaults to be overridden by config
conf := &Config{
Workers: 1,
DefaultCertPort: "443",
CertWindow: 15,
ExpectedStatusCode: 200,
Interval: 60,
RenotifyInterval: 900,
}
err := ReadConfig(*confFn, conf)
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
if *debug {
enc := yaml.NewEncoder(os.Stderr)
err := enc.Encode(conf)
if err != nil {
panic(err)
}
}
if *once {
jobNotify(conf, checkCerts(conf))
jobNotify(conf, checkStatus(conf, conf.StatusChecks, checkup.HttpStatusOK))
jobNotify(conf, checkStatus(conf, conf.StatusChecksNoRdr, checkup.HttpNoRedirectStatusOK))
os.Exit(0)
}
certsPrev := map[string]*jobResponse{}
statusPrev := map[string]*jobResponse{}
statusPrevNoRdr := map[string]*jobResponse{}
for {
cert := checkCerts(conf)
status := checkStatus(conf, conf.StatusChecks, checkup.HttpStatusOK)
statusNoRdr := checkStatus(conf, conf.StatusChecksNoRdr, checkup.HttpNoRedirectStatusOK)
jobNotifyDedup(conf, certsPrev, cert)
jobNotifyDedup(conf, statusPrev, status)
jobNotifyDedup(conf, statusPrevNoRdr, statusNoRdr)
certsPrev = cert
statusPrev = status
statusPrevNoRdr = statusNoRdr
time.Sleep(time.Duration(conf.Interval) * time.Second)
}
}
|
