// New returns a new Pool structure.
func New(setters ...Configurator) (*Pool, error) {
pc := &config{
size: DefaultSize,
}
for _, setter := range setters {
if err := setter(pc); err != nil {
return nil, err
}
}
if pc.address == "" {
return nil, errors.New("cannot create pool with empty address")
}
pool, err := gopool.New(
gopool.Size(pc.size),
gopool.Close(func(conn interface{}) error {
return conn.(io.ReadWriteCloser).Close()
}),
gopool.Factory(func() (interface{}, error) {
if pc.printer != nil {
return goperconn.New(goperconn.Address(pc.address), goperconn.Logger(pc.printer))
}
return goperconn.New(goperconn.Address(pc.address))
}),
)
if err != nil {
return nil, err
}
return &Pool{pool: pool}, nil
}
func main() {
printer := log.New(os.Stderr, "WARNING: ", 0)
// NOTE: Address is required, but all other parameters have defaults.
conn, err := goperconn.New(goperconn.Address("echo-server.example.com:7"),
goperconn.DialTimeout(5*time.Second),
goperconn.Logger(printer),
goperconn.RetryMin(time.Second),
goperconn.RetryMax(30*time.Second))
if err != nil {
log.Fatal(err)
}
// later ...
_, err = conn.Write([]byte("hello, world"))
if err != nil {
log.Fatal(err)
}
buf := make([]byte, 512)
_, err = conn.Read(buf)
if err != nil {
log.Fatal(err)
}
}