traefik/pkg/server/service/tcp/service.go

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package tcp
import (
"context"
"fmt"
"net"
"github.com/containous/traefik/pkg/config/dynamic"
2019-03-15 08:42:03 +00:00
"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]*dynamic.TCPServiceInfo
}
// NewManager creates a new manager
func NewManager(conf *dynamic.RuntimeConfiguration) *Manager {
return &Manager{
configs: conf.TCPServices,
}
}
// 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))
// FIXME Check if the service is declared multiple times with different types
conf, ok := m.configs[serviceQualifiedName]
if !ok {
return nil, fmt.Errorf("the service %q does not exist", serviceQualifiedName)
}
if conf.LoadBalancer == nil {
conf.Err = fmt.Errorf("the service %q doesn't have any TCP load balancer", serviceQualifiedName)
return nil, conf.Err
}
logger := log.FromContext(ctx)
loadBalancer := tcp.NewRRLoadBalancer()
for name, server := range conf.LoadBalancer.Servers {
if _, _, err := net.SplitHostPort(server.Address); err != nil {
logger.Errorf("In service %q: %v", serviceQualifiedName, 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)
logger.WithField(log.ServerName, name).Debugf("Creating TCP server %d at %s", name, server.Address)
}
return loadBalancer, nil
}