127 lines
2.7 KiB
Go
127 lines
2.7 KiB
Go
package main
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import (
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"context"
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"crypto/tls"
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"encoding/json"
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"errors"
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"fmt"
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"log"
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"time"
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rabbitmq "github.com/rabbitmq/amqp091-go"
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)
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func failOnError(err error, msg string) {
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if err != nil {
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log.Panicf("%s: %s\n", err, msg)
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}
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}
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type Message struct {
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Topic string
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Body []byte
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}
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var messageQueue chan Message
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func PublishMessage(giteaOrg, giteaWebhookType, action string, data []byte) error {
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if messageQueue == nil {
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return fmt.Errorf("Queue not initialized")
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}
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if !json.Valid(data) {
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return errors.New("Invalid JSON in request")
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}
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var msg Message
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if len(action) > 0 {
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msg = Message{
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Topic: fmt.Sprintf("opensuse.gitea.%s.%s.%s", giteaOrg, giteaWebhookType, action),
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Body: data,
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}
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} else {
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msg = Message{
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Topic: fmt.Sprintf("opensuse.gitea.%s.%s", giteaOrg, giteaWebhookType),
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Body: data,
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}
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}
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select {
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case messageQueue <- msg:
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default:
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return errors.New("Unable to queue message. Possibly queue full.")
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}
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return nil
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}
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func ConnectToExchangeForPublish(host, username, password string) {
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defer func() {
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if r := recover(); r != nil {
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log.Print("recovering... reconnecting...\n")
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time.Sleep(5 * time.Second)
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go ConnectToExchangeForPublish(host, username, password)
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}
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}()
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if messageQueue == nil {
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messageQueue = make(chan Message, 10240)
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}
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auth := ""
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if len(username) > 0 && len(password) > 0 {
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auth = username + ":" + password + "@"
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}
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connection, err := rabbitmq.DialTLS("amqps://"+auth+host, &tls.Config{
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ServerName: host,
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})
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failOnError(err, "Cannot connect to rabbit.opensuse.org")
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defer connection.Close()
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ch, err := connection.Channel()
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failOnError(err, "Cannot create a channel")
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defer ch.Close()
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err = ch.ExchangeDeclarePassive("pubsub", "topic", true, false, false, false, nil)
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failOnError(err, "Cannot find pubsub exchange")
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for {
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msg, ok := <-messageQueue
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if !ok {
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log.Println("Shutdown ...")
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return
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}
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ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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err = ch.PublishWithContext(ctx, "pubsub", msg.Topic, false, false, rabbitmq.Publishing{
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ContentType: "application/json",
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AppId: AppName,
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Body: []byte(msg.Body),
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Timestamp: time.Now(),
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DeliveryMode: 2,
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ContentEncoding: "application/json",
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})
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if err != nil {
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if ch.IsClosed() || connection.IsClosed() {
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select {
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case messageQueue <- msg:
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log.Println("requeued ...")
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default:
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log.Println("queue full... message lost")
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}
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// reconnect
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log.Println("reconnecting...")
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time.Sleep(5 * time.Second)
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go ConnectToExchangeForPublish(host, username, password)
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return
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} else {
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log.Printf("Error sending request. %v\n", err)
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}
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}
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}
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}
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