traefik/pkg/config/runtime/runtime_http.go
2019-09-02 02:38:04 -07:00

202 lines
5.7 KiB
Go

package runtime
import (
"context"
"fmt"
"sort"
"sync"
"github.com/containous/traefik/v2/pkg/config/dynamic"
"github.com/containous/traefik/v2/pkg/log"
)
// GetRoutersByEntryPoints returns all the http routers by entry points name and routers name.
func (c *Configuration) GetRoutersByEntryPoints(ctx context.Context, entryPoints []string, tls bool) map[string]map[string]*RouterInfo {
entryPointsRouters := make(map[string]map[string]*RouterInfo)
for rtName, rt := range c.Routers {
if (tls && rt.TLS == nil) || (!tls && rt.TLS != nil) {
continue
}
logger := log.FromContext(log.With(ctx, log.Str(log.RouterName, rtName)))
eps := rt.EntryPoints
if len(eps) == 0 {
logger.Debugf("No entryPoint defined for this router, using the default one(s) instead: %+v", entryPoints)
eps = entryPoints
}
entryPointsCount := 0
for _, entryPointName := range eps {
if !contains(entryPoints, entryPointName) {
rt.AddError(fmt.Errorf("entryPoint %q doesn't exist", entryPointName), false)
logger.WithField(log.EntryPointName, entryPointName).
Errorf("entryPoint %q doesn't exist", entryPointName)
continue
}
if _, ok := entryPointsRouters[entryPointName]; !ok {
entryPointsRouters[entryPointName] = make(map[string]*RouterInfo)
}
entryPointsCount++
rt.Using = append(rt.Using, entryPointName)
entryPointsRouters[entryPointName][rtName] = rt
}
if entryPointsCount == 0 {
rt.AddError(fmt.Errorf("no valid entryPoint for this router"), true)
logger.Error("no valid entryPoint for this router")
}
rt.Using = unique(rt.Using)
}
return entryPointsRouters
}
func unique(src []string) []string {
var uniq []string
set := make(map[string]struct{})
for _, v := range src {
if _, exist := set[v]; !exist {
set[v] = struct{}{}
uniq = append(uniq, v)
}
}
sort.Strings(uniq)
return uniq
}
// RouterInfo holds information about a currently running HTTP router.
type RouterInfo struct {
*dynamic.Router // dynamic configuration
// Err contains all the errors that occurred during router's creation.
Err []string `json:"error,omitempty"`
// 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 *RouterInfo) 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
}
}
// MiddlewareInfo holds information about a currently running middleware.
type MiddlewareInfo struct {
*dynamic.Middleware // dynamic configuration
// Err contains all the errors that occurred during service creation.
Err []string `json:"error,omitempty"`
Status string `json:"status,omitempty"`
UsedBy []string `json:"usedBy,omitempty"` // list of routers and services using that middleware.
}
// AddError adds err to s.Err, if it does not already exist.
// If critical is set, m is marked as disabled.
func (m *MiddlewareInfo) AddError(err error, critical bool) {
for _, value := range m.Err {
if value == err.Error() {
return
}
}
m.Err = append(m.Err, err.Error())
if critical {
m.Status = StatusDisabled
return
}
// only set it to "warning" if not already in a worse state
if m.Status != StatusDisabled {
m.Status = StatusWarning
}
}
// ServiceInfo holds information about a currently running service.
type ServiceInfo struct {
*dynamic.Service // dynamic configuration
// Err contains all the errors that occurred during service creation.
Err []string `json:"error,omitempty"`
// 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
serverStatusMu sync.RWMutex
serverStatus map[string]string // keyed by server URL
}
// AddError adds err to s.Err, if it does not already exist.
// If critical is set, s is marked as disabled.
func (s *ServiceInfo) 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
}
}
// UpdateServerStatus sets the status of the server in the ServiceInfo.
// It is the responsibility of the caller to check that s is not nil.
func (s *ServiceInfo) UpdateServerStatus(server string, status string) {
s.serverStatusMu.Lock()
defer s.serverStatusMu.Unlock()
if s.serverStatus == nil {
s.serverStatus = make(map[string]string)
}
s.serverStatus[server] = status
}
// GetAllStatus returns all the statuses of all the servers in ServiceInfo.
// It is the responsibility of the caller to check that s is not nil
func (s *ServiceInfo) GetAllStatus() map[string]string {
s.serverStatusMu.RLock()
defer s.serverStatusMu.RUnlock()
if len(s.serverStatus) == 0 {
return nil
}
allStatus := make(map[string]string, len(s.serverStatus))
for k, v := range s.serverStatus {
allStatus[k] = v
}
return allStatus
}