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"use strict";
/*
* Copyright 2019 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.
*
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.registerResolver = registerResolver;
exports.registerDefaultScheme = registerDefaultScheme;
exports.createResolver = createResolver;
exports.getDefaultAuthority = getDefaultAuthority;
exports.mapUriDefaultScheme = mapUriDefaultScheme;
const uri_parser_1 = require("./uri-parser");
const registeredResolvers = {};
let defaultScheme = null;
/**
* Register a resolver class to handle target names prefixed with the `prefix`
* string. This prefix should correspond to a URI scheme name listed in the
* [gRPC Name Resolution document](https://github.com/grpc/grpc/blob/master/doc/naming.md)
* @param prefix
* @param resolverClass
*/
function registerResolver(scheme, resolverClass) {
registeredResolvers[scheme] = resolverClass;
}
/**
* Register a default resolver to handle target names that do not start with
* any registered prefix.
* @param resolverClass
*/
function registerDefaultScheme(scheme) {
defaultScheme = scheme;
}
/**
* Create a name resolver for the specified target, if possible. Throws an
* error if no such name resolver can be created.
* @param target
* @param listener
*/
function createResolver(target, listener, options) {
if (target.scheme !== undefined && target.scheme in registeredResolvers) {
return new registeredResolvers[target.scheme](target, listener, options);
}
else {
throw new Error(`No resolver could be created for target ${(0, uri_parser_1.uriToString)(target)}`);
}
}
/**
* Get the default authority for the specified target, if possible. Throws an
* error if no registered name resolver can parse that target string.
* @param target
*/
function getDefaultAuthority(target) {
if (target.scheme !== undefined && target.scheme in registeredResolvers) {
return registeredResolvers[target.scheme].getDefaultAuthority(target);
}
else {
throw new Error(`Invalid target ${(0, uri_parser_1.uriToString)(target)}`);
}
}
function mapUriDefaultScheme(target) {
if (target.scheme === undefined || !(target.scheme in registeredResolvers)) {
if (defaultScheme !== null) {
return {
scheme: defaultScheme,
authority: undefined,
path: (0, uri_parser_1.uriToString)(target),
};
}
else {
return null;
}
}
return target;
}
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