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298 lines (257 loc) · 7.1 KB
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package main
import (
"encoding/json"
"os"
"sync"
"time"
"github.com/rabbitmq/amqp091-go"
"github.com/rs/zerolog/log"
)
var (
rabbitConn *amqp091.Connection
rabbitChannel *amqp091.Channel
rabbitEnabled bool
rabbitOnce sync.Once
rabbitQueue string
)
const (
maxRetries = 10
retryInterval = 3 * time.Second
)
// Call this in main() or initialization
func InitRabbitMQ() {
rabbitURL := os.Getenv("RABBITMQ_URL")
rabbitQueue = os.Getenv("RABBITMQ_QUEUE")
if rabbitQueue == "" {
rabbitQueue = "whatsapp_events" // default queue
}
if rabbitURL == "" {
rabbitEnabled = false
log.Info().Msg("RABBITMQ_URL is not set. RabbitMQ publishing disabled.")
return
}
// Attempt to connect with retry
for attempt := 1; attempt <= maxRetries; attempt++ {
log.Info().
Int("attempt", attempt).
Int("max_retries", maxRetries).
Msg("Attempting to connect to RabbitMQ")
conn, err := amqp091.Dial(rabbitURL)
if err != nil {
log.Warn().
Err(err).
Int("attempt", attempt).
Int("max_retries", maxRetries).
Msg("Failed to connect to RabbitMQ")
if attempt < maxRetries {
log.Info().
Dur("retry_in", retryInterval).
Msg("Retrying RabbitMQ connection")
time.Sleep(retryInterval)
continue
}
// Last attempt failed
rabbitEnabled = false
log.Error().
Err(err).
Msg("Could not connect to RabbitMQ after all retries. RabbitMQ disabled.")
return
}
// Connection successful, attempt to open channel
channel, err := conn.Channel()
if err != nil {
conn.Close()
log.Warn().
Err(err).
Int("attempt", attempt).
Msg("Failed to open RabbitMQ channel")
if attempt < maxRetries {
log.Info().
Dur("retry_in", retryInterval).
Msg("Retrying RabbitMQ connection")
time.Sleep(retryInterval)
continue
}
// Last attempt failed
rabbitEnabled = false
log.Error().
Err(err).
Msg("Could not open RabbitMQ channel after all retries. RabbitMQ disabled.")
return
}
// Success!
rabbitConn = conn
rabbitChannel = channel
rabbitEnabled = true
log.Info().
Str("queue", rabbitQueue).
Int("attempt", attempt).
Msg("RabbitMQ connection established successfully")
// Setup handler for automatic reconnection on errors
go handleConnectionErrors()
return
}
}
// Monitor connection errors and attempt reconnection
func handleConnectionErrors() {
notifyClose := rabbitConn.NotifyClose(make(chan *amqp091.Error))
for err := range notifyClose {
log.Error().
Err(err).
Msg("RabbitMQ connection closed unexpectedly. Attempting reconnection...")
rabbitEnabled = false
// Attempt to reconnect
for attempt := 1; attempt <= maxRetries; attempt++ {
log.Info().
Int("attempt", attempt).
Msg("Reconnecting to RabbitMQ")
time.Sleep(retryInterval)
rabbitURL := os.Getenv("RABBITMQ_URL")
conn, err := amqp091.Dial(rabbitURL)
if err != nil {
log.Warn().
Err(err).
Int("attempt", attempt).
Msg("Reconnection failed")
continue
}
channel, err := conn.Channel()
if err != nil {
conn.Close()
log.Warn().
Err(err).
Int("attempt", attempt).
Msg("Failed to open channel on reconnection")
continue
}
// Reconnection successful
rabbitConn = conn
rabbitChannel = channel
rabbitEnabled = true
log.Info().Msg("RabbitMQ reconnected successfully")
// Restart monitoring
go handleConnectionErrors()
return
}
log.Error().Msg("Failed to reconnect to RabbitMQ after all retries")
return
}
}
// Optionally, allow overriding the queue per message
func PublishToRabbit(data []byte, queueOverride ...string) error {
if !rabbitEnabled {
return nil
}
queueName := rabbitQueue
if len(queueOverride) > 0 && queueOverride[0] != "" {
queueName = queueOverride[0]
}
// Declare queue (idempotent)
_, err := rabbitChannel.QueueDeclare(
queueName,
true, // durable
false, // auto-delete
false, // exclusive
false, // no-wait
nil, // arguments
)
if err != nil {
log.Error().Err(err).Str("queue", queueName).Msg("Could not declare RabbitMQ queue")
return err
}
err = rabbitChannel.Publish(
"", // exchange (default)
queueName, // routing key = queue
false, // mandatory
false, // immediate
amqp091.Publishing{
ContentType: "application/json",
Body: data,
DeliveryMode: amqp091.Persistent,
},
)
if err != nil {
log.Error().Err(err).Str("queue", queueName).Msg("Could not publish to RabbitMQ")
} else {
log.Debug().Str("queue", queueName).Msg("Published message to RabbitMQ")
}
return err
}
func sendToGlobalRabbit(jsonData []byte, token string, userID string, queueName ...string) {
if !rabbitEnabled {
// Check if RabbitMQ is configured but disabled due to connection issues
rabbitURL := os.Getenv("RABBITMQ_URL")
rabbitQueueEnv := os.Getenv("RABBITMQ_QUEUE")
if rabbitURL != "" || rabbitQueueEnv != "" {
urlSet := "no"
if rabbitURL != "" {
urlSet = "yes"
}
queueSet := "no"
if rabbitQueueEnv != "" {
queueSet = "yes"
}
log.Error().
Str("rabbitmq_url_set", urlSet).
Str("rabbitmq_queue_set", queueSet).
Msg("RabbitMQ is configured but disabled due to connection failure. Event not published to queue.")
} else {
log.Debug().Msg("RabbitMQ not configured. Event not published to queue.")
}
return
}
// Extract instance information
instance_name := ""
userinfo, found := userinfocache.Get(token)
if found {
instance_name = userinfo.(Values).Get("Name")
}
// Parse the original JSON into a map
var originalData map[string]interface{}
err := json.Unmarshal(jsonData, &originalData)
if err != nil {
log.Error().Err(err).Msg("Failed to unmarshal original JSON data for RabbitMQ")
return
}
// Add the new fields directly to the original data
originalData["userID"] = userID
originalData["instanceName"] = instance_name
// Marshal back to JSON
enhancedJSON, err := json.Marshal(originalData)
if err != nil {
log.Error().Err(err).Msg("Failed to marshal enhanced data for RabbitMQ")
return
}
err = PublishToRabbit(enhancedJSON, queueName...)
if err != nil {
log.Error().Err(err).Msg("Failed to publish to RabbitMQ")
}
}
func PublishFileErrorToQueue(payload WebhookFileErrorPayload) {
queueName := *webhookErrorQueueName
body, err := json.Marshal(payload)
if err != nil {
log.Error().Err(err).Msg("Failed to marshal file error payload for RabbitMQ")
return
}
err = PublishToRabbit(body, queueName)
if err != nil {
log.Error().Str("queue", queueName).Msg("Failed to publish file error payload to queue")
} else {
log.Info().Str("queue", queueName).Msg("File error payload successfully published to queue")
}
}
func PublishDataErrorToQueue(payload WebhookErrorPayload) {
queueName := *webhookErrorQueueName
body, err := json.Marshal(payload)
if err != nil {
log.Error().Err(err).Msg("Failed to marshal data error payload for RabbitMQ")
return
}
err = PublishToRabbit(body, queueName)
if err != nil {
log.Error().Str("queue", queueName).Msg("Failed to publish data error payload to queue")
} else {
log.Info().Str("queue", queueName).Msg("Data error payload successfully published to queue")
}
}