106 lines
2.1 KiB
Go
106 lines
2.1 KiB
Go
package rabbit
|
|
|
|
import (
|
|
"fmt"
|
|
amqp "github.com/rabbitmq/amqp091-go"
|
|
"log"
|
|
"os"
|
|
"sync"
|
|
"time"
|
|
)
|
|
|
|
type Client struct {
|
|
mutex *sync.Mutex
|
|
queueName string
|
|
logger *log.Logger
|
|
connection *amqp.Connection
|
|
Channel *amqp.Channel
|
|
done chan bool
|
|
notifyConnClose chan *amqp.Error
|
|
notifyChanClose chan *amqp.Error
|
|
notifyConfirm chan amqp.Confirmation
|
|
isReady bool
|
|
opts options
|
|
connected chan struct{}
|
|
}
|
|
|
|
type options struct {
|
|
connectTimeout time.Duration
|
|
reconnectDelay time.Duration
|
|
reInitDelay time.Duration
|
|
resendDelay time.Duration
|
|
consumerRateLimit time.Duration
|
|
consumerBurstSize int
|
|
}
|
|
|
|
func NewClient(addr, queueName string, opts ...Option) (*Client, error) {
|
|
if addr == "" {
|
|
log.Fatal(errNoAddr)
|
|
}
|
|
|
|
if queueName == "" {
|
|
log.Fatal(errNoQueue)
|
|
}
|
|
|
|
client := Client{
|
|
mutex: &sync.Mutex{},
|
|
logger: log.New(os.Stdout, "", log.LstdFlags),
|
|
queueName: queueName,
|
|
done: make(chan bool),
|
|
connected: make(chan struct{}),
|
|
}
|
|
|
|
o := options{
|
|
connectTimeout: 15 * time.Second,
|
|
reconnectDelay: 5,
|
|
reInitDelay: 2,
|
|
resendDelay: 5,
|
|
consumerRateLimit: time.Millisecond * 500,
|
|
consumerBurstSize: 10,
|
|
}
|
|
|
|
for _, opt := range opts {
|
|
opt(&o)
|
|
}
|
|
|
|
if err := client.connectAndSignal(addr, o.connectTimeout); err != nil {
|
|
return nil, fmt.Errorf("failed to connect: %w", err)
|
|
}
|
|
|
|
go client.handleReconnect(addr)
|
|
|
|
return &client, nil
|
|
}
|
|
|
|
func NewPublisher(client *Client) Publisher {
|
|
return &pubHandler{client: client}
|
|
}
|
|
|
|
func NewConsumer(client *Client) Consumer {
|
|
return &consumeHandler{client: client}
|
|
}
|
|
|
|
func (c *Client) connectAndSignal(addr string, timeout time.Duration) error {
|
|
type result struct {
|
|
conn *amqp.Connection
|
|
err error
|
|
}
|
|
resCh := make(chan result, 1)
|
|
|
|
go func() {
|
|
conn, err := amqp.Dial(addr)
|
|
resCh <- result{conn, err}
|
|
}()
|
|
|
|
select {
|
|
case <-time.After(timeout):
|
|
return fmt.Errorf("connection timeout after %v", timeout)
|
|
case res := <-resCh:
|
|
if res.err != nil {
|
|
return res.err
|
|
}
|
|
c.connection = res.conn
|
|
close(c.connected)
|
|
return nil
|
|
}
|
|
}
|