tank/alertmanager.go

72 lines
1.8 KiB
Go

package main
import (
"bytes"
"encoding/json"
"fmt"
tTemplate "text/template"
"github.com/gofiber/fiber/v2"
"github.com/prometheus/alertmanager/template"
"maunium.net/go/mautrix"
"maunium.net/go/mautrix/event"
"maunium.net/go/mautrix/format"
"maunium.net/go/mautrix/id"
)
func HandleAlertmanagerPayloadPost(c *fiber.Ctx) error {
payload := template.Data{}
if err := c.BodyParser(&payload); err != nil {
fmt.Println("Failed to parse payload", err)
return err
}
fmt.Println("Got alertmanager payload")
fmt.Printf("%d alerts recieved\n", len(payload.Alerts))
for _, alert := range payload.Alerts {
s, _ := json.MarshalIndent(alert, "", "\t")
fmt.Println(string(s))
message := ""
var rendered bytes.Buffer
at, _ := tTemplate.New("AlertMessage").Parse(alert.Annotations["description"])
at.Execute(&rendered, alert)
if alert.Status == "firing" {
switch alert.Labels["severity"] {
case "warning":
message = fmt.Sprintf("⚠️ %s", rendered.String())
case "notify":
message = fmt.Sprintf("@room - %s", rendered.String())
}
} else {
message = fmt.Sprintf("✅ %s", rendered.String())
}
if serviceURL, ok := alert.Annotations["service_url"]; ok {
message += "<br>Service URL: " + serviceURL
}
if alert.GeneratorURL != "" {
message += "<br>URL: " + alert.GeneratorURL
}
_, err := matrixClient.SendMessageEvent(
id.RoomID(getRoom(c.Query("room", *defaultRoom))),
event.EventMessage,
format.RenderMarkdown(message, true, true),
)
if err != nil {
fmt.Println("Failed sending to Matrix", err)
if httpErr, ok := err.(mautrix.HTTPError); ok {
return c.Status(httpErr.Response.StatusCode).SendString(httpErr.RespError.Err)
}
return fiber.ErrInternalServerError
}
}
return c.SendStatus(fiber.StatusOK)
}