traefik/pkg/api/handler_http.go
2019-09-02 02:38:04 -07:00

242 lines
6.7 KiB
Go

package api
import (
"encoding/json"
"fmt"
"net/http"
"sort"
"strconv"
"strings"
"github.com/containous/traefik/v2/pkg/config/runtime"
"github.com/containous/traefik/v2/pkg/log"
"github.com/gorilla/mux"
)
type routerRepresentation struct {
*runtime.RouterInfo
Name string `json:"name,omitempty"`
Provider string `json:"provider,omitempty"`
}
func newRouterRepresentation(name string, rt *runtime.RouterInfo) routerRepresentation {
return routerRepresentation{
RouterInfo: rt,
Name: name,
Provider: getProviderName(name),
}
}
type serviceRepresentation struct {
*runtime.ServiceInfo
ServerStatus map[string]string `json:"serverStatus,omitempty"`
Name string `json:"name,omitempty"`
Provider string `json:"provider,omitempty"`
Type string `json:"type,omitempty"`
}
func newServiceRepresentation(name string, si *runtime.ServiceInfo) serviceRepresentation {
return serviceRepresentation{
ServiceInfo: si,
Name: name,
Provider: getProviderName(name),
ServerStatus: si.GetAllStatus(),
Type: strings.ToLower(extractType(si.Service)),
}
}
type middlewareRepresentation struct {
*runtime.MiddlewareInfo
Name string `json:"name,omitempty"`
Provider string `json:"provider,omitempty"`
Type string `json:"type,omitempty"`
}
func newMiddlewareRepresentation(name string, mi *runtime.MiddlewareInfo) middlewareRepresentation {
return middlewareRepresentation{
MiddlewareInfo: mi,
Name: name,
Provider: getProviderName(name),
Type: strings.ToLower(extractType(mi.Middleware)),
}
}
func (h Handler) getRouters(rw http.ResponseWriter, request *http.Request) {
results := make([]routerRepresentation, 0, len(h.runtimeConfiguration.Routers))
criterion := newSearchCriterion(request.URL.Query())
for name, rt := range h.runtimeConfiguration.Routers {
if keepRouter(name, rt, criterion) {
results = append(results, newRouterRepresentation(name, rt))
}
}
sort.Slice(results, func(i, j int) bool {
return results[i].Name < results[j].Name
})
rw.Header().Set("Content-Type", "application/json")
pageInfo, err := pagination(request, len(results))
if err != nil {
writeError(rw, err.Error(), http.StatusBadRequest)
return
}
rw.Header().Set(nextPageHeader, strconv.Itoa(pageInfo.nextPage))
err = json.NewEncoder(rw).Encode(results[pageInfo.startIndex:pageInfo.endIndex])
if err != nil {
log.FromContext(request.Context()).Error(err)
writeError(rw, err.Error(), http.StatusInternalServerError)
}
}
func (h Handler) getRouter(rw http.ResponseWriter, request *http.Request) {
routerID := mux.Vars(request)["routerID"]
rw.Header().Set("Content-Type", "application/json")
router, ok := h.runtimeConfiguration.Routers[routerID]
if !ok {
writeError(rw, fmt.Sprintf("router not found: %s", routerID), http.StatusNotFound)
return
}
result := newRouterRepresentation(routerID, router)
err := json.NewEncoder(rw).Encode(result)
if err != nil {
log.FromContext(request.Context()).Error(err)
writeError(rw, err.Error(), http.StatusInternalServerError)
}
}
func (h Handler) getServices(rw http.ResponseWriter, request *http.Request) {
results := make([]serviceRepresentation, 0, len(h.runtimeConfiguration.Services))
criterion := newSearchCriterion(request.URL.Query())
for name, si := range h.runtimeConfiguration.Services {
if keepService(name, si, criterion) {
results = append(results, newServiceRepresentation(name, si))
}
}
sort.Slice(results, func(i, j int) bool {
return results[i].Name < results[j].Name
})
rw.Header().Set("Content-Type", "application/json")
pageInfo, err := pagination(request, len(results))
if err != nil {
writeError(rw, err.Error(), http.StatusBadRequest)
return
}
rw.Header().Set(nextPageHeader, strconv.Itoa(pageInfo.nextPage))
err = json.NewEncoder(rw).Encode(results[pageInfo.startIndex:pageInfo.endIndex])
if err != nil {
log.FromContext(request.Context()).Error(err)
writeError(rw, err.Error(), http.StatusInternalServerError)
}
}
func (h Handler) getService(rw http.ResponseWriter, request *http.Request) {
serviceID := mux.Vars(request)["serviceID"]
rw.Header().Add("Content-Type", "application/json")
service, ok := h.runtimeConfiguration.Services[serviceID]
if !ok {
writeError(rw, fmt.Sprintf("service not found: %s", serviceID), http.StatusNotFound)
return
}
result := newServiceRepresentation(serviceID, service)
err := json.NewEncoder(rw).Encode(result)
if err != nil {
log.FromContext(request.Context()).Error(err)
writeError(rw, err.Error(), http.StatusInternalServerError)
}
}
func (h Handler) getMiddlewares(rw http.ResponseWriter, request *http.Request) {
results := make([]middlewareRepresentation, 0, len(h.runtimeConfiguration.Middlewares))
criterion := newSearchCriterion(request.URL.Query())
for name, mi := range h.runtimeConfiguration.Middlewares {
if keepMiddleware(name, mi, criterion) {
results = append(results, newMiddlewareRepresentation(name, mi))
}
}
sort.Slice(results, func(i, j int) bool {
return results[i].Name < results[j].Name
})
rw.Header().Set("Content-Type", "application/json")
pageInfo, err := pagination(request, len(results))
if err != nil {
writeError(rw, err.Error(), http.StatusBadRequest)
return
}
rw.Header().Set(nextPageHeader, strconv.Itoa(pageInfo.nextPage))
err = json.NewEncoder(rw).Encode(results[pageInfo.startIndex:pageInfo.endIndex])
if err != nil {
log.FromContext(request.Context()).Error(err)
writeError(rw, err.Error(), http.StatusInternalServerError)
}
}
func (h Handler) getMiddleware(rw http.ResponseWriter, request *http.Request) {
middlewareID := mux.Vars(request)["middlewareID"]
rw.Header().Set("Content-Type", "application/json")
middleware, ok := h.runtimeConfiguration.Middlewares[middlewareID]
if !ok {
writeError(rw, fmt.Sprintf("middleware not found: %s", middlewareID), http.StatusNotFound)
return
}
result := newMiddlewareRepresentation(middlewareID, middleware)
err := json.NewEncoder(rw).Encode(result)
if err != nil {
log.FromContext(request.Context()).Error(err)
writeError(rw, err.Error(), http.StatusInternalServerError)
}
}
func keepRouter(name string, item *runtime.RouterInfo, criterion *searchCriterion) bool {
if criterion == nil {
return true
}
return criterion.withStatus(item.Status) && criterion.searchIn(item.Rule, name)
}
func keepService(name string, item *runtime.ServiceInfo, criterion *searchCriterion) bool {
if criterion == nil {
return true
}
return criterion.withStatus(item.Status) && criterion.searchIn(name)
}
func keepMiddleware(name string, item *runtime.MiddlewareInfo, criterion *searchCriterion) bool {
if criterion == nil {
return true
}
return criterion.withStatus(item.Status) && criterion.searchIn(name)
}