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httpHandler.go
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httpHandler.go
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package httpserver
import (
"github.com/gorilla/mux"
"golang.org/x/net/websocket"
"lll.github.com/llleaas/cmd/hermes/app/options"
"lll.github.com/llleaas/pkg/common/log"
"lll.github.com/llleaas/pkg/hermes/faasmanager"
"net/http"
"net/http/httputil"
"net/url"
"strings"
)
type HttpHandler struct {
Name string
Router *mux.Router
FaasManager faasmanager.FaaSManager
Option *options.HermesOption
Connections map[string] *websocket.Conn
FaasProxy *httputil.ReverseProxy
}
const HERMES_PATH = "/hermes"
func startFaasManager(name string, option *options.HermesOption) faasmanager.FaaSManager {
faasmgr := faasmanager.NewWebsocketManager(name, option)
err := faasmgr.Start(HERMES_PATH)
if err != nil {
log.GetLogger().Fatalf("http handler start faas manager error: %v", err)
panic(err)
}
return faasmgr
}
func NewHttpHandler(name string, option *options.HermesOption) (*HttpHandler) {
faasmgr := startFaasManager(name, option)
return &HttpHandler{
Name: name,
Option: option,
Router: mux.NewRouter(),
FaasManager: faasmgr,
Connections: make(map[string] *websocket.Conn),
FaasProxy: nil,
}
}
func (h *HttpHandler)Start() error {
// create reverse proxy to default faas
faasUrl, err := url.Parse(h.Option.DefaultFaasUrl)
if err != nil {
log.GetLogger().Errorf("hermes http handler start default faas url parse error: %v", err)
return err
}
h.FaasProxy = httputil.NewSingleHostReverseProxy(faasUrl)
return nil
}
func (h *HttpHandler)ServeHTTP(w http.ResponseWriter,r *http.Request) {
if strings.HasPrefix(r.URL.Path, HERMES_PATH) {
// hermes path
h.FaasManager.ServeHTTP(w, r)
return
}
// faas maanger path
h.FaasProxy.ServeHTTP(w, r)
}