59 lines
1.7 KiB
TypeScript
59 lines
1.7 KiB
TypeScript
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/*
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* Copyright 2019 gRPC authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import {
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Resolver,
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ResolverListener,
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registerResolver,
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registerDefaultResolver,
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} from './resolver';
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import { SubchannelAddress } from './subchannel';
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function getUdsName(target: string): string {
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/* Due to how this resolver is registered, it should only be constructed
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* with strings that start with 'unix:'. Other strings may result in
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* nonsensical output. If the string starts with 'unix://' that entire
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* prefix needs to be ignored */
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if (target.startsWith('unix://')) {
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return target.substring(7);
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} else {
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return target.substring(5);
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}
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}
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class UdsResolver implements Resolver {
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private addresses: SubchannelAddress[] = [];
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constructor(target: string, private listener: ResolverListener) {
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this.addresses = [{ path: getUdsName(target) }];
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}
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updateResolution(): void {
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process.nextTick(
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this.listener.onSuccessfulResolution,
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this.addresses,
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null,
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null
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);
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}
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static getDefaultAuthority(target: string): string {
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return 'localhost';
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}
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}
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export function setup() {
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registerResolver('unix:', UdsResolver);
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}
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