traefik/pkg/server/service/tcp/service.go
2019-05-09 14:30:06 +02:00

76 lines
1.9 KiB
Go

package tcp
import (
"context"
"fmt"
"net"
"github.com/containous/traefik/pkg/config"
"github.com/containous/traefik/pkg/log"
"github.com/containous/traefik/pkg/server/internal"
"github.com/containous/traefik/pkg/tcp"
)
// Manager is the TCPHandlers factory
type Manager struct {
configs map[string]*config.TCPService
}
// NewManager creates a new manager
func NewManager(configs map[string]*config.TCPService) *Manager {
return &Manager{
configs: configs,
}
}
// BuildTCP Creates a tcp.Handler for a service configuration.
func (m *Manager) BuildTCP(rootCtx context.Context, serviceName string) (tcp.Handler, error) {
serviceQualifiedName := internal.GetQualifiedName(rootCtx, serviceName)
ctx := internal.AddProviderInContext(rootCtx, serviceQualifiedName)
ctx = log.With(ctx, log.Str(log.ServiceName, serviceName))
conf, ok := m.configs[serviceQualifiedName]
if !ok {
return nil, fmt.Errorf("the service %q does not exits", serviceQualifiedName)
}
if conf.LoadBalancer == nil {
return nil, fmt.Errorf("the service %q doesn't have any TCP load balancer", serviceQualifiedName)
}
logger := log.FromContext(ctx)
// FIXME Check if the service is declared multiple times with different types
loadBalancer := tcp.NewRRLoadBalancer()
for _, server := range conf.LoadBalancer.Servers {
if _, err := parseIP(server.Address); err != nil {
logger.Errorf("Invalid IP address for a %q server %q: %v", serviceQualifiedName, server.Address, err)
continue
}
handler, err := tcp.NewProxy(server.Address)
if err != nil {
logger.Errorf("In service %q server %q: %v", serviceQualifiedName, server.Address, err)
continue
}
loadBalancer.AddServer(handler)
}
return loadBalancer, nil
}
func parseIP(s string) (string, error) {
ip, _, err := net.SplitHostPort(s)
if err == nil {
return ip, nil
}
ipNoPort := net.ParseIP(s)
if ipNoPort == nil {
return "", fmt.Errorf("invalid IP Address %s", ipNoPort)
}
return ipNoPort.String(), nil
}