/
manager.go
51 lines (44 loc) · 1.07 KB
/
manager.go
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package transport
import (
"net/http"
"net/url"
)
// Transport is a transport which can creates base.Conn
type Transport interface {
Name() string
Accept(w http.ResponseWriter, r *http.Request) (Conn, error)
Dial(u *url.URL, requestHeader http.Header) (Conn, error)
}
// Manager is a manager of transports.
type Manager struct {
order []string
transports map[string]Transport
}
// NewManager creates a new manager.
func NewManager(transports []Transport) *Manager {
tranMap := make(map[string]Transport)
names := make([]string, len(transports))
for i, t := range transports {
names[i] = t.Name()
tranMap[t.Name()] = t
}
return &Manager{
order: names,
transports: tranMap,
}
}
// UpgradeFrom returns a name list of transports which can upgrade from given
// name.
func (m *Manager) UpgradeFrom(name string) []string {
for i, n := range m.order {
if n == name {
return m.order[i+1:]
}
}
return nil
}
// Get returns the transport with given name.
func (m *Manager) Get(name string) (Transport, bool) {
t, ok := m.transports[name]
return t, ok
}