traefik/pkg/config/runtime/runtime_udp.go

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package runtime
import (
"context"
"errors"
"fmt"
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"slices"
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"github.com/rs/zerolog/log"
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"github.com/traefik/traefik/v3/pkg/config/dynamic"
"github.com/traefik/traefik/v3/pkg/logs"
)
// GetUDPRoutersByEntryPoints returns all the UDP routers by entry points name and routers name.
func (c *Configuration) GetUDPRoutersByEntryPoints(ctx context.Context, entryPoints []string) map[string]map[string]*UDPRouterInfo {
entryPointsRouters := make(map[string]map[string]*UDPRouterInfo)
for rtName, rt := range c.UDPRouters {
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logger := log.Ctx(ctx).With().Str(logs.RouterName, rtName).Logger()
eps := rt.EntryPoints
if len(eps) == 0 {
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logger.Debug().Msgf("No entryPoint defined for this router, using the default one(s) instead: %+v", entryPoints)
eps = entryPoints
}
entryPointsCount := 0
for _, entryPointName := range eps {
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if !slices.Contains(entryPoints, entryPointName) {
rt.AddError(fmt.Errorf("entryPoint %q doesn't exist", entryPointName), false)
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logger.Error().Str(logs.EntryPointName, entryPointName).
Msg("EntryPoint doesn't exist")
continue
}
if _, ok := entryPointsRouters[entryPointName]; !ok {
entryPointsRouters[entryPointName] = make(map[string]*UDPRouterInfo)
}
entryPointsCount++
rt.Using = append(rt.Using, entryPointName)
entryPointsRouters[entryPointName][rtName] = rt
}
if entryPointsCount == 0 {
rt.AddError(errors.New("no valid entryPoint for this router"), true)
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logger.Error().Msg("No valid entryPoint for this router")
}
}
return entryPointsRouters
}
// UDPRouterInfo holds information about a currently running UDP router.
type UDPRouterInfo struct {
*dynamic.UDPRouter // dynamic configuration
Err []string `json:"error,omitempty"` // initialization error
// Status reports whether the router is disabled, in a warning state, or all good (enabled).
// If not in "enabled" state, the reason for it should be in the list of Err.
// It is the caller's responsibility to set the initial status.
Status string `json:"status,omitempty"`
Using []string `json:"using,omitempty"` // Effective entry points used by that router.
}
// AddError adds err to r.Err, if it does not already exist.
// If critical is set, r is marked as disabled.
func (r *UDPRouterInfo) AddError(err error, critical bool) {
for _, value := range r.Err {
if value == err.Error() {
return
}
}
r.Err = append(r.Err, err.Error())
if critical {
r.Status = StatusDisabled
return
}
// only set it to "warning" if not already in a worse state
if r.Status != StatusDisabled {
r.Status = StatusWarning
}
}
// UDPServiceInfo holds information about a currently running UDP service.
type UDPServiceInfo struct {
*dynamic.UDPService // dynamic configuration
Err []string `json:"error,omitempty"` // initialization error
// Status reports whether the service is disabled, in a warning state, or all good (enabled).
// If not in "enabled" state, the reason for it should be in the list of Err.
// It is the caller's responsibility to set the initial status.
Status string `json:"status,omitempty"`
UsedBy []string `json:"usedBy,omitempty"` // list of routers using that service
}
// AddError adds err to s.Err, if it does not already exist.
// If critical is set, s is marked as disabled.
func (s *UDPServiceInfo) AddError(err error, critical bool) {
for _, value := range s.Err {
if value == err.Error() {
return
}
}
s.Err = append(s.Err, err.Error())
if critical {
s.Status = StatusDisabled
return
}
// only set it to "warning" if not already in a worse state
if s.Status != StatusDisabled {
s.Status = StatusWarning
}
}