uptime-kuma/extra/healthcheck.go

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/*
* If changed, have to run `npm run build-docker-builder-go`.
* This script should be run after a period of time (180s), because the server may need some time to prepare.
*/
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package main
import (
"crypto/tls"
"io/ioutil"
"log"
"net/http"
"os"
"runtime"
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"strings"
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"time"
)
func main() {
isFreeBSD := runtime.GOOS == "freebsd"
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// Is K8S + uptime-kuma as the container name
// See #2083
isK8s := strings.HasPrefix(os.Getenv("UPTIME_KUMA_PORT"), "tcp://")
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// process.env.NODE_TLS_REJECT_UNAUTHORIZED = "0";
http.DefaultTransport.(*http.Transport).TLSClientConfig = &tls.Config{
InsecureSkipVerify: true,
}
client := http.Client{
Timeout: 28 * time.Second,
}
sslKey := os.Getenv("UPTIME_KUMA_SSL_KEY")
if len(sslKey) == 0 {
sslKey = os.Getenv("SSL_KEY")
}
sslCert := os.Getenv("UPTIME_KUMA_SSL_CERT")
if len(sslCert) == 0 {
sslCert = os.Getenv("SSL_CERT")
}
hostname := os.Getenv("UPTIME_KUMA_HOST")
if len(hostname) == 0 && !isFreeBSD {
hostname = os.Getenv("HOST")
}
if len(hostname) == 0 {
hostname = "127.0.0.1"
}
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port := ""
// UPTIME_KUMA_PORT is override by K8S unexpectedly,
if !isK8s {
port = os.Getenv("UPTIME_KUMA_PORT")
}
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if len(port) == 0 {
port = os.Getenv("PORT")
}
if len(port) == 0 {
port = "3001"
}
protocol := ""
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if len(sslKey) != 0 && len(sslCert) != 0 {
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protocol = "https"
} else {
protocol = "http"
}
url := protocol + "://" + hostname + ":" + port
log.Println("Checking " + url)
resp, err := client.Get(url)
if err != nil {
log.Fatalln(err)
}
defer resp.Body.Close()
_, err = ioutil.ReadAll(resp.Body)
if err != nil {
log.Fatalln(err)
}
log.Printf("Health Check OK [Res Code: %d]\n", resp.StatusCode)
}