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