/
router.go
96 lines (78 loc) · 2.36 KB
/
router.go
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package rabbitmq
import (
"encoding/json"
"github.com/ccthomas/gridiron/pkg/logger"
amqp "github.com/rabbitmq/amqp091-go"
"go.uber.org/zap"
)
func NewRouter(ch *amqp.Channel) *RabbitMqRouter {
logger.Get().Debug("New RabbitMQ Router.")
return &RabbitMqRouter{
Channel: ch,
Exchanges: map[string]bool{},
}
}
func (r *RabbitMqRouter) HandleFunc(exchange string, key string, f func(body RabbitMqBody)) {
go r.handleFuncAsync(exchange, key, f)
}
func (r *RabbitMqRouter) handleFuncAsync(exchange string, key string, f func(body RabbitMqBody)) {
logger.Get().Debug("Handle Func Async.")
if _, ok := r.Exchanges[exchange]; !ok {
logger.Get().Debug("Declaring exchange.")
err := DeclareExchange(r.Channel, exchange, "fanout")
if err != nil {
logger.Get().Fatal("Failed to declare exchange.")
}
r.Exchanges[exchange] = true
}
logger.Get().Debug("Declaring queue.")
q, err := DeclareQueue(r.Channel, "")
if err != nil {
logger.Get().Fatal("Failed to declare queue.")
}
logger.Get().Debug("Binding queue.")
err = QueueBind(r.Channel, q, key, exchange)
if err != nil {
logger.Get().Fatal("Failed to bind queue.")
}
logger.Get().Debug("Consume message.")
msgs, err := Consume(r.Channel, q)
if err != nil {
logger.Get().Fatal("Failed to consume from queue.")
}
var forever chan struct{}
go func() {
for d := range msgs {
logger.Get().Debug("Message received from queue.", zap.String("Exchange", exchange), zap.String("Key", key))
logger.Get().Debug("Unmarshal rabbit mq body")
var body RabbitMqBody
err := json.Unmarshal(d.Body, &body)
if err != nil {
logger.Get().Error("Failed to parse message", zap.Error(err))
return
}
logger.Get().Debug("Invoking handler")
f(body)
}
}()
logger.Get().Debug("Waiting to process message.", zap.String("Exchange", exchange), zap.String("Key", key))
<-forever
}
func (r *RabbitMqRouter) PublishMessage(exchange string, key string, bodies []RabbitMqBody) error {
logger.Get().Debug("Publish Message.")
if _, ok := r.Exchanges[exchange]; !ok {
logger.Get().Debug("Declaring exchange.")
err := DeclareExchange(r.Channel, exchange, "fanout")
if err != nil {
logger.Get().Fatal("Failed to declare exchange.")
}
r.Exchanges[exchange] = true
}
for _, body := range bodies {
err := Publish(r.Channel, exchange, key, body)
if err != nil {
return err
}
}
return nil
}