UnmarshalJSON takes the json data (a server) and unmarshals it to the struct.
(data []byte)
| 347 | |
| 348 | // UnmarshalJSON takes the json data (a server) and unmarshals it to the struct. |
| 349 | func (sc *ServerConfig) UnmarshalJSON(data []byte) error { |
| 350 | server := serverConfigJSON{} |
| 351 | if err := json.Unmarshal(data, &server); err != nil { |
| 352 | return fmt.Errorf("xds: failed to JSON unmarshal server configuration during bootstrap: %v, config:\n%s", err, string(data)) |
| 353 | } |
| 354 | |
| 355 | sc.serverURI = server.ServerURI |
| 356 | sc.channelCreds = server.ChannelCreds |
| 357 | sc.callCredsConfigs = server.CallCredsConfigs |
| 358 | sc.serverFeatures = server.ServerFeatures |
| 359 | |
| 360 | for _, cc := range server.ChannelCreds { |
| 361 | // We stop at the first credential type that we support. |
| 362 | c := bootstrap.GetChannelCredentials(cc.Type) |
| 363 | if c == nil { |
| 364 | continue |
| 365 | } |
| 366 | bundle, cancel, err := c.Build(cc.Config) |
| 367 | if err != nil { |
| 368 | return fmt.Errorf("failed to build credentials bundle from bootstrap for %q: %v", cc.Type, err) |
| 369 | } |
| 370 | sc.selectedChannelCreds = cc |
| 371 | sc.credsDialOption = grpc.WithCredentialsBundle(bundle) |
| 372 | if d, ok := bundle.(extraDialOptions); ok { |
| 373 | sc.extraDialOptions = d.DialOptions() |
| 374 | } |
| 375 | sc.cleanups = append(sc.cleanups, cancel) |
| 376 | break |
| 377 | } |
| 378 | |
| 379 | if envconfig.XDSBootstrapCallCredsEnabled { |
| 380 | // Process call credentials - unlike channel creds, we use ALL supported |
| 381 | // types. Also, call credentials are optional as per gRFC A97. |
| 382 | for _, cfg := range server.CallCredsConfigs { |
| 383 | c := bootstrap.GetCallCredentials(cfg.Type) |
| 384 | if c == nil { |
| 385 | // Skip unsupported call credential types (don't fail bootstrap). |
| 386 | continue |
| 387 | } |
| 388 | callCreds, cancel, err := c.Build(cfg.Config) |
| 389 | if err != nil { |
| 390 | // Call credential validation failed - this should fail bootstrap. |
| 391 | return fmt.Errorf("failed to build call credentials from bootstrap for %q: %v", cfg.Type, err) |
| 392 | } |
| 393 | sc.selectedCallCreds = append(sc.selectedCallCreds, callCreds) |
| 394 | sc.extraDialOptions = append(sc.extraDialOptions, grpc.WithPerRPCCredentials(callCreds)) |
| 395 | sc.cleanups = append(sc.cleanups, cancel) |
| 396 | } |
| 397 | } |
| 398 | |
| 399 | if sc.serverURI == "" { |
| 400 | return fmt.Errorf("xds: `server_uri` field in server config cannot be empty: %s", string(data)) |
| 401 | } |
| 402 | if sc.credsDialOption == nil { |
| 403 | return fmt.Errorf("xds: `channel_creds` field in server config cannot be empty: %s", string(data)) |
| 404 | } |
| 405 | return nil |
| 406 | } |