traefik/pkg/server/router/udp/router.go
mpl 115d42e0f0
UDP support
Co-authored-by: Julien Salleyron <julien.salleyron@gmail.com>
2020-02-11 01:26:04 +01:00

87 lines
2.4 KiB
Go

package udp
import (
"context"
"errors"
"github.com/containous/traefik/v2/pkg/config/runtime"
"github.com/containous/traefik/v2/pkg/log"
"github.com/containous/traefik/v2/pkg/server/provider"
udpservice "github.com/containous/traefik/v2/pkg/server/service/udp"
"github.com/containous/traefik/v2/pkg/udp"
)
// NewManager Creates a new Manager
func NewManager(conf *runtime.Configuration,
serviceManager *udpservice.Manager,
) *Manager {
return &Manager{
serviceManager: serviceManager,
conf: conf,
}
}
// Manager is a route/router manager
type Manager struct {
serviceManager *udpservice.Manager
conf *runtime.Configuration
}
func (m *Manager) getUDPRouters(ctx context.Context, entryPoints []string) map[string]map[string]*runtime.UDPRouterInfo {
if m.conf != nil {
return m.conf.GetUDPRoutersByEntryPoints(ctx, entryPoints)
}
return make(map[string]map[string]*runtime.UDPRouterInfo)
}
// BuildHandlers builds the handlers for the given entrypoints
func (m *Manager) BuildHandlers(rootCtx context.Context, entryPoints []string) map[string]udp.Handler {
entryPointsRouters := m.getUDPRouters(rootCtx, entryPoints)
entryPointHandlers := make(map[string]udp.Handler)
for _, entryPointName := range entryPoints {
entryPointName := entryPointName
routers := entryPointsRouters[entryPointName]
ctx := log.With(rootCtx, log.Str(log.EntryPointName, entryPointName))
handler, err := m.buildEntryPointHandler(ctx, routers)
if err != nil {
log.FromContext(ctx).Error(err)
continue
}
entryPointHandlers[entryPointName] = handler
}
return entryPointHandlers
}
func (m *Manager) buildEntryPointHandler(ctx context.Context, configs map[string]*runtime.UDPRouterInfo) (udp.Handler, error) {
logger := log.FromContext(ctx)
if len(configs) > 1 {
logger.Warn("Warning: config has more than one udp router for a given entrypoint")
}
for routerName, routerConfig := range configs {
ctxRouter := log.With(provider.AddInContext(ctx, routerName), log.Str(log.RouterName, routerName))
logger := log.FromContext(ctxRouter)
if routerConfig.Service == "" {
err := errors.New("the service is missing on the udp router")
routerConfig.AddError(err, true)
logger.Error(err)
continue
}
handler, err := m.serviceManager.BuildUDP(ctxRouter, routerConfig.Service)
if err != nil {
routerConfig.AddError(err, true)
logger.Error(err)
continue
}
return handler, nil
}
return nil, nil
}