Update main.go (#2)

* Update main.go

* Update alertmanager-receiver-46elks.service

* Delete api.go.tmpl

* Update main.go

* Create alertmanager-receiver-46elks.env

* Create README.md

* mod stuff

* Update README.md

README.md

@@ -0,0 +1,12 @@
+# alertmanager-receiver-46elks
+SMS sender using the 46elks API for Prometheus Alertmanager
+
+* compile program using 1.19 or better: go build main.go
+* copy program to /usr/local/bin/
+* copy env file to /etc/sysconfig
+* alter env file to suide your needs
+* copy servicefile to /etc/systemd/system/
+* reload system do to read service file: systemctl daemon-reload
+* enable service: systemctl enable alertmanager-receiver-46elks.service
+* start service: systemctl start alertmanager-receiver-46elks.service
+

alertmanager-receiver-46elks.env

@@ -0,0 +1,4 @@
+API_PORT=1025
+API_SENDER=sms_sender_name
+API_USERNAME=your_username
+API_PASSWORD=your_password

alertmanager-receiver-46elks.service

@@ -5,6 +5,7 @@ Description=Alertmanager Receiver 46elks
 ExecStart=/usr/local/bin/alertmanager-receiver-46elks
 User=nobody
 WorkingDirectory=/tmp
+EnvironmentFile=/etc/sysconfig/alertmanager-receiver-46elks.env
 
 [Install]
 WantedBy=multi-user.target

go.mod

@@ -0,0 +1,5 @@
+module main.go
+
+go 1.19
+
+require gopkg.in/yaml.v2 v2.4.0

go.sum

@@ -0,0 +1,4 @@
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
+gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=

main.go

@@ -34,6 +34,11 @@ import (
 
 var (
 	m = sync.Mutex{}
+	username = ""
+	password = ""
+	sender = ""
+	port = ""
+
 )
 
 type Alert struct {
@@ -122,15 +127,15 @@ func handleAlert(w http.ResponseWriter, r *http.Request, alert *Alert) {
 	log.Printf("Message: %s", message)
 
 	data := url.Values{
-		"from":    {"KamelNet"},
+		"from":    {sender},
 		"to":      {to},
 		"message": {message},
 	}
 
 	req, err := http.NewRequest("POST", "https://api.46elks.com/a1/sms", bytes.NewBufferString(data.Encode()))
 	req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
 	req.Header.Add("Content-Length", strconv.Itoa(len(data.Encode())))
-	req.SetBasicAuth(apiUsername, apiPassword)
+	req.SetBasicAuth(username, password)
 
 	client := &http.Client{}
 	resp, err := client.Do(req)
@@ -157,6 +162,27 @@ func handleAlert(w http.ResponseWriter, r *http.Request, alert *Alert) {
 
 func main() {
 	log.Printf("Running")
+
+	// Read environment variables for username and password
+	username := os.Getenv("API_USERNAME")
+	if username == "" {
+		log.Fatal("Environment variable API_USERNAME is not set")
+	}
+	password := os.Getenv("API_PASSWORD")
+	if password == "" {
+		log.Fatal("Environment variable API_PASSWORD is not set")
+	}
+	sender := os.Getenv("API_SENDER")
+	if sender == "" {
+		log.Fatal("Environment variable API_SENDER is not set")
+	}
+
+	// Read the environment variable for port, and use the default port 1025 if not set
+	port := os.Getenv("API_PORT")
+	if port == "" {
+		port = "1025"
+	}
+
 	// Ask soundgoof why the port 1025 was chosen
-	log.Fatal(http.ListenAndServe(":1025", http.HandlerFunc(handle)))
+	log.Fatal(http.ListenAndServe(":"+port, http.HandlerFunc(handle)))
 }