| /* |
| * |
| * Copyright 2022 gRPC authors. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| |
| // Package bootstrap provides the functionality to register possible options |
| // for aspects of the xDS client through the bootstrap file. |
| // |
| // # Experimental |
| // |
| // Notice: This package is EXPERIMENTAL and may be changed or removed |
| // in a later release. |
| package bootstrap |
| |
| import ( |
| "encoding/json" |
| |
| "google.golang.org/grpc/credentials" |
| ) |
| |
| // registry is a map from credential type name to Credential builder. |
| var registry = make(map[string]Credentials) |
| |
| // Credentials interface encapsulates a credentials.Bundle builder |
| // that can be used for communicating with the xDS Management server. |
| type Credentials interface { |
| // Build returns a credential bundle associated with this credential. |
| Build(config json.RawMessage) (credentials.Bundle, error) |
| // Name returns the credential name associated with this credential. |
| Name() string |
| } |
| |
| // RegisterCredentials registers Credentials used for connecting to the xds |
| // management server. |
| // |
| // NOTE: this function must only be called during initialization time (i.e. in |
| // an init() function), and is not thread-safe. If multiple credentials are |
| // registered with the same name, the one registered last will take effect. |
| func RegisterCredentials(c Credentials) { |
| registry[c.Name()] = c |
| } |
| |
| // GetCredentials returns the credentials associated with a given name. |
| // If no credentials are registered with the name, nil will be returned. |
| func GetCredentials(name string) Credentials { |
| if c, ok := registry[name]; ok { |
| return c |
| } |
| |
| return nil |
| } |