lib/controller/router/router.go

   1 // Copyright (C) The Arvados Authors. All rights reserved.
   2 //
   3 // SPDX-License-Identifier: AGPL-3.0
   4
   5 package router
   6
   7 import (
   8         "context"
   9         "fmt"
  10         "net/http"
  11         "strings"
  12
  13         "git.curoverse.com/arvados.git/lib/controller/federation"
  14         "git.curoverse.com/arvados.git/sdk/go/arvados"
  15         "git.curoverse.com/arvados.git/sdk/go/auth"
  16         "git.curoverse.com/arvados.git/sdk/go/ctxlog"
  17         "git.curoverse.com/arvados.git/sdk/go/httpserver"
  18         "github.com/julienschmidt/httprouter"
  19         "github.com/sirupsen/logrus"
  20 )
  21
  22 type router struct {
  23         mux *httprouter.Router
  24         fed federation.Interface
  25 }
  26
  27 func New(cluster *arvados.Cluster) *router {
  28         rtr := &router{
  29                 mux: httprouter.New(),
  30                 fed: federation.New(cluster),
  31         }
  32         rtr.addRoutes(cluster)
  33         return rtr
  34 }
  35
  36 func (rtr *router) addRoutes(cluster *arvados.Cluster) {
  37         for _, route := range []struct {
  38                 endpoint    arvados.APIEndpoint
  39                 defaultOpts func() interface{}
  40                 exec        func(ctx context.Context, opts interface{}) (interface{}, error)
  41         }{
  42                 {
  43                         arvados.EndpointCollectionCreate,
  44                         func() interface{} { return &arvados.CreateOptions{} },
  45                         func(ctx context.Context, opts interface{}) (interface{}, error) {
  46                                 return rtr.fed.CollectionCreate(ctx, *opts.(*arvados.CreateOptions))
  47                         },
  48                 },
  49                 {
  50                         arvados.EndpointCollectionUpdate,
  51                         func() interface{} { return &arvados.UpdateOptions{} },
  52                         func(ctx context.Context, opts interface{}) (interface{}, error) {
  53                                 return rtr.fed.CollectionUpdate(ctx, *opts.(*arvados.UpdateOptions))
  54                         },
  55                 },
  56                 {
  57                         arvados.EndpointCollectionGet,
  58                         func() interface{} { return &arvados.GetOptions{} },
  59                         func(ctx context.Context, opts interface{}) (interface{}, error) {
  60                                 return rtr.fed.CollectionGet(ctx, *opts.(*arvados.GetOptions))
  61                         },
  62                 },
  63                 {
  64                         arvados.EndpointCollectionList,
  65                         func() interface{} { return &arvados.ListOptions{Limit: -1} },
  66                         func(ctx context.Context, opts interface{}) (interface{}, error) {
  67                                 return rtr.fed.CollectionList(ctx, *opts.(*arvados.ListOptions))
  68                         },
  69                 },
  70                 {
  71                         arvados.EndpointCollectionProvenance,
  72                         func() interface{} { return &arvados.GetOptions{} },
  73                         func(ctx context.Context, opts interface{}) (interface{}, error) {
  74                                 return rtr.fed.CollectionProvenance(ctx, *opts.(*arvados.GetOptions))
  75                         },
  76                 },
  77                 {
  78                         arvados.EndpointCollectionUsedBy,
  79                         func() interface{} { return &arvados.GetOptions{} },
  80                         func(ctx context.Context, opts interface{}) (interface{}, error) {
  81                                 return rtr.fed.CollectionUsedBy(ctx, *opts.(*arvados.GetOptions))
  82                         },
  83                 },
  84                 {
  85                         arvados.EndpointCollectionDelete,
  86                         func() interface{} { return &arvados.DeleteOptions{} },
  87                         func(ctx context.Context, opts interface{}) (interface{}, error) {
  88                                 return rtr.fed.CollectionDelete(ctx, *opts.(*arvados.DeleteOptions))
  89                         },
  90                 },
  91                 {
  92                         arvados.EndpointContainerCreate,
  93                         func() interface{} { return &arvados.CreateOptions{} },
  94                         func(ctx context.Context, opts interface{}) (interface{}, error) {
  95                                 return rtr.fed.ContainerCreate(ctx, *opts.(*arvados.CreateOptions))
  96                         },
  97                 },
  98                 {
  99                         arvados.EndpointContainerUpdate,
 100                         func() interface{} { return &arvados.UpdateOptions{} },
 101                         func(ctx context.Context, opts interface{}) (interface{}, error) {
 102                                 return rtr.fed.ContainerUpdate(ctx, *opts.(*arvados.UpdateOptions))
 103                         },
 104                 },
 105                 {
 106                         arvados.EndpointContainerGet,
 107                         func() interface{} { return &arvados.GetOptions{} },
 108                         func(ctx context.Context, opts interface{}) (interface{}, error) {
 109                                 return rtr.fed.ContainerGet(ctx, *opts.(*arvados.GetOptions))
 110                         },
 111                 },
 112                 {
 113                         arvados.EndpointContainerList,
 114                         func() interface{} { return &arvados.ListOptions{Limit: -1} },
 115                         func(ctx context.Context, opts interface{}) (interface{}, error) {
 116                                 return rtr.fed.ContainerList(ctx, *opts.(*arvados.ListOptions))
 117                         },
 118                 },
 119                 {
 120                         arvados.EndpointContainerDelete,
 121                         func() interface{} { return &arvados.DeleteOptions{} },
 122                         func(ctx context.Context, opts interface{}) (interface{}, error) {
 123                                 return rtr.fed.ContainerDelete(ctx, *opts.(*arvados.DeleteOptions))
 124                         },
 125                 },
 126                 {
 127                         arvados.EndpointContainerLock,
 128                         func() interface{} {
 129                                 return &arvados.GetOptions{Select: []string{"uuid", "state", "priority", "auth_uuid", "locked_by_uuid"}}
 130                         },
 131                         func(ctx context.Context, opts interface{}) (interface{}, error) {
 132                                 return rtr.fed.ContainerLock(ctx, *opts.(*arvados.GetOptions))
 133                         },
 134                 },
 135                 {
 136                         arvados.EndpointContainerUnlock,
 137                         func() interface{} {
 138                                 return &arvados.GetOptions{Select: []string{"uuid", "state", "priority", "auth_uuid", "locked_by_uuid"}}
 139                         },
 140                         func(ctx context.Context, opts interface{}) (interface{}, error) {
 141                                 return rtr.fed.ContainerUnlock(ctx, *opts.(*arvados.GetOptions))
 142                         },
 143                 },
 144                 {
 145                         arvados.EndpointSpecimenCreate,
 146                         func() interface{} { return &arvados.CreateOptions{} },
 147                         func(ctx context.Context, opts interface{}) (interface{}, error) {
 148                                 return rtr.fed.SpecimenCreate(ctx, *opts.(*arvados.CreateOptions))
 149                         },
 150                 },
 151                 {
 152                         arvados.EndpointSpecimenUpdate,
 153                         func() interface{} { return &arvados.UpdateOptions{} },
 154                         func(ctx context.Context, opts interface{}) (interface{}, error) {
 155                                 return rtr.fed.SpecimenUpdate(ctx, *opts.(*arvados.UpdateOptions))
 156                         },
 157                 },
 158                 {
 159                         arvados.EndpointSpecimenGet,
 160                         func() interface{} { return &arvados.GetOptions{} },
 161                         func(ctx context.Context, opts interface{}) (interface{}, error) {
 162                                 return rtr.fed.SpecimenGet(ctx, *opts.(*arvados.GetOptions))
 163                         },
 164                 },
 165                 {
 166                         arvados.EndpointSpecimenList,
 167                         func() interface{} { return &arvados.ListOptions{Limit: -1} },
 168                         func(ctx context.Context, opts interface{}) (interface{}, error) {
 169                                 return rtr.fed.SpecimenList(ctx, *opts.(*arvados.ListOptions))
 170                         },
 171                 },
 172                 {
 173                         arvados.EndpointSpecimenDelete,
 174                         func() interface{} { return &arvados.DeleteOptions{} },
 175                         func(ctx context.Context, opts interface{}) (interface{}, error) {
 176                                 return rtr.fed.SpecimenDelete(ctx, *opts.(*arvados.DeleteOptions))
 177                         },
 178                 },
 179         } {
 180                 route := route
 181                 methods := []string{route.endpoint.Method}
 182                 if route.endpoint.Method == "PATCH" {
 183                         methods = append(methods, "PUT")
 184                 }
 185                 for _, method := range methods {
 186                         rtr.mux.HandlerFunc(method, "/"+route.endpoint.Path, func(w http.ResponseWriter, req *http.Request) {
 187                                 logger := ctxlog.FromContext(req.Context())
 188                                 params, err := rtr.loadRequestParams(req, route.endpoint.AttrsKey)
 189                                 if err != nil {
 190                                         logger.WithField("req", req).WithField("route", route).WithError(err).Debug("error loading request params")
 191                                         rtr.sendError(w, err)
 192                                         return
 193                                 }
 194                                 opts := route.defaultOpts()
 195                                 err = rtr.transcode(params, opts)
 196                                 if err != nil {
 197                                         logger.WithField("params", params).WithError(err).Debugf("error transcoding params to %T", opts)
 198                                         rtr.sendError(w, err)
 199                                         return
 200                                 }
 201                                 respOpts, err := rtr.responseOptions(opts)
 202                                 if err != nil {
 203                                         logger.WithField("opts", opts).WithError(err).Debugf("error getting response options from %T", opts)
 204                                         rtr.sendError(w, err)
 205                                         return
 206                                 }
 207
 208                                 creds := auth.CredentialsFromRequest(req)
 209                                 if rt, _ := params["reader_tokens"].([]interface{}); len(rt) > 0 {
 210                                         for _, t := range rt {
 211                                                 if t, ok := t.(string); ok {
 212                                                         creds.Tokens = append(creds.Tokens, t)
 213                                                 }
 214                                         }
 215                                 }
 216                                 ctx := req.Context()
 217                                 ctx = context.WithValue(ctx, auth.ContextKeyCredentials, creds)
 218                                 ctx = arvados.ContextWithRequestID(ctx, req.Header.Get("X-Request-Id"))
 219                                 logger.WithFields(logrus.Fields{
 220                                         "apiEndpoint": route.endpoint,
 221                                         "apiOptsType": fmt.Sprintf("%T", opts),
 222                                         "apiOpts":     opts,
 223                                 }).Debug("exec")
 224                                 resp, err := route.exec(ctx, opts)
 225                                 if err != nil {
 226                                         logger.WithError(err).Debugf("returning error type %T", err)
 227                                         rtr.sendError(w, err)
 228                                         return
 229                                 }
 230                                 rtr.sendResponse(w, resp, respOpts)
 231                         })
 232                 }
 233         }
 234         rtr.mux.NotFound = http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
 235                 httpserver.Errors(w, []string{"API endpoint not found"}, http.StatusNotFound)
 236         })
 237 }
 238
 239 func (rtr *router) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 240         switch strings.SplitN(strings.TrimLeft(r.URL.Path, "/"), "/", 2)[0] {
 241         case "login", "logout", "auth":
 242         default:
 243                 w.Header().Set("Access-Control-Allow-Origin", "*")
 244                 w.Header().Set("Access-Control-Allow-Methods", "GET, HEAD, PUT, POST, DELETE")
 245                 w.Header().Set("Access-Control-Allow-Headers", "Authorization, Content-Type")
 246                 w.Header().Set("Access-Control-Max-Age", "86486400")
 247         }
 248         if r.Method == "OPTIONS" {
 249                 return
 250         }
 251         r.ParseForm()
 252         if m := r.FormValue("_method"); m != "" {
 253                 r2 := *r
 254                 r = &r2
 255                 r.Method = m
 256         }
 257         rtr.mux.ServeHTTP(w, r)
 258 }