104 lines
1.8 KiB
Go
104 lines
1.8 KiB
Go
package rabbitmq
|
|
|
|
import (
|
|
"time"
|
|
|
|
"code.google.com/p/go-uuid/uuid"
|
|
"github.com/myodc/go-micro/broker"
|
|
c "github.com/myodc/go-micro/context"
|
|
"github.com/streadway/amqp"
|
|
"golang.org/x/net/context"
|
|
)
|
|
|
|
type rbroker struct {
|
|
conn *rabbitMQConn
|
|
addrs []string
|
|
}
|
|
|
|
type subscriber struct {
|
|
topic string
|
|
ch *rabbitMQChannel
|
|
}
|
|
|
|
func (s *subscriber) Topic() string {
|
|
return s.topic
|
|
}
|
|
|
|
func (s *subscriber) Unsubscribe() error {
|
|
return s.ch.Close()
|
|
}
|
|
|
|
func (r *rbroker) Publish(ctx context.Context, topic string, body []byte) error {
|
|
header, _ := c.GetMetadata(ctx)
|
|
|
|
msg := amqp.Publishing{
|
|
MessageId: uuid.NewUUID().String(),
|
|
Timestamp: time.Now().UTC(),
|
|
Body: body,
|
|
Headers: amqp.Table{},
|
|
}
|
|
|
|
for k, v := range header {
|
|
msg.Headers[k] = v
|
|
}
|
|
|
|
return r.conn.Publish("", topic, msg)
|
|
}
|
|
|
|
func (r *rbroker) Subscribe(topic string, function func(context.Context, *broker.Message)) (broker.Subscriber, error) {
|
|
ch, sub, err := r.conn.Consume(topic)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
fn := func(msg amqp.Delivery) {
|
|
header := make(map[string]string)
|
|
for k, v := range msg.Headers {
|
|
header[k], _ = v.(string)
|
|
}
|
|
ctx := c.WithMetadata(context.Background(), header)
|
|
function(ctx, &broker.Message{
|
|
Id: msg.MessageId,
|
|
Timestamp: msg.Timestamp.Unix(),
|
|
Topic: topic,
|
|
Body: msg.Body,
|
|
})
|
|
}
|
|
|
|
go func() {
|
|
for d := range sub {
|
|
go fn(d)
|
|
}
|
|
}()
|
|
|
|
return &subscriber{ch: ch, topic: topic}, nil
|
|
}
|
|
|
|
func (r *rbroker) Address() string {
|
|
if len(r.addrs) > 0 {
|
|
return r.addrs[0]
|
|
}
|
|
return ""
|
|
}
|
|
|
|
func (r *rbroker) Init() error {
|
|
return nil
|
|
}
|
|
|
|
func (r *rbroker) Connect() error {
|
|
<-r.conn.Init()
|
|
return nil
|
|
}
|
|
|
|
func (r *rbroker) Disconnect() error {
|
|
r.conn.Close()
|
|
return nil
|
|
}
|
|
|
|
func NewBroker(addrs []string, opt ...broker.Option) broker.Broker {
|
|
return &rbroker{
|
|
conn: newRabbitMQConn("", addrs),
|
|
addrs: addrs,
|
|
}
|
|
}
|