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connection.go
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connection.go
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package leanstreams
import (
"crypto/tls"
"sync"
"time"
)
type Connection struct {
clientConfig *TCPClientConfig
client *TCPClient
done chan struct{}
sync.Mutex
}
func NewConnection(addr string, tlsConfig *tls.Config, maxPayloadSizeInBytes int) *Connection {
clientConfig := &TCPClientConfig{
MaxMessageSize: maxPayloadSizeInBytes,
Address: addr,
TLSConfig: tlsConfig,
}
return &Connection{
clientConfig: clientConfig,
client: nil,
done: make(chan struct{}),
}
}
func (c *Connection) Connect() {
select {
case <-c.done:
return
default:
}
c.Lock()
defer c.Unlock()
var err error
for {
c.client, err = DialTCP(c.clientConfig)
if err != nil {
// waiting for remote node to start listening
// TODO: do this better
time.Sleep(100 * time.Millisecond)
continue
}
break
}
}
func (c *Connection) Client() *TCPClient {
if c.client == nil {
c.Connect()
}
return c.client
}
func (c *Connection) Close() error {
close(c.done)
c.Lock()
defer c.Unlock()
if c.client != nil {
return c.client.Close()
}
return nil
}