*ApiTokenCache
}
+type IndexHandler struct {
+ *keepclient.KeepClient
+ *ApiTokenCache
+}
+
type InvalidPathHandler struct{}
type OptionsHandler struct{}
rest.Handle(`/{locator:[0-9a-f]{32}\+.*}`,
GetBlockHandler{kc, t}).Methods("GET", "HEAD")
rest.Handle(`/{locator:[0-9a-f]{32}}`, GetBlockHandler{kc, t}).Methods("GET", "HEAD")
+
+ // List all blocks
+ rest.Handle(`/index`, IndexHandler{kc, t}).Methods("GET")
+
+ // List blocks whose hash has the given prefix
+ rest.Handle(`/index/{prefix:[0-9a-f]{0,32}}`, IndexHandler{kc, t}).Methods("GET")
}
if enable_put {
status = http.StatusBadGateway
}
}
+
+// ServeHTTP implementation for IndexHandler
+// Supports only GET requests for /index/{prefix:[0-9a-f]{0,32}}
+// For each keep server found in LocalRoots:
+// Invokes GetIndex using keepclient
+// Expects "complete" response (terminating with blank new line)
+// Aborts on any errors
+// Concatenates responses from all those keep servers and returns
+func (handler IndexHandler) ServeHTTP(resp http.ResponseWriter, req *http.Request) {
+ SetCorsHeaders(resp)
+
+ prefix := mux.Vars(req)["prefix"]
+ var err error
+ var status int
+
+ defer func() {
+ if status != http.StatusOK {
+ http.Error(resp, err.Error(), status)
+ }
+ }()
+
+ kc := *handler.KeepClient
+
+ ok, token := CheckAuthorizationHeader(kc, handler.ApiTokenCache, req)
+ if !ok {
+ status, err = http.StatusForbidden, BadAuthorizationHeader
+ return
+ }
+
+ // Copy ArvadosClient struct and use the client's API token
+ arvclient := *kc.Arvados
+ arvclient.ApiToken = token
+ kc.Arvados = &arvclient
+
+ // Only GET method is supported
+ if req.Method != "GET" {
+ status, err = http.StatusNotImplemented, MethodNotSupported
+ return
+ }
+
+ // Get index from all LocalRoots and write to resp
+ var reader io.Reader
+ for uuid := range kc.LocalRoots() {
+ reader, err = kc.GetIndex(uuid, prefix)
+ if err != nil {
+ status = http.StatusBadGateway
+ return
+ }
+
+ _, err = io.Copy(resp, reader)
+ if err != nil {
+ status = http.StatusBadGateway
+ return
+ }
+ }
+
+ // Got index from all the keep servers and wrote to resp
+ status = http.StatusOK
+ resp.Write([]byte("\n"))
+}