Jonas Koch
5 months ago
5 changed files with 182 additions and 5 deletions
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///
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/// Copyright © 2016-2026 The Thingsboard 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 { AccessToken, ClientCredentials } from 'simple-oauth2' |
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interface OauthBearerProviderOptions { |
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clientId: string; |
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clientSecret: string; |
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host: string; |
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refreshThresholdMs: number; |
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} |
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export const oauthBearerProvider = (options: OauthBearerProviderOptions) => { |
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const client = new ClientCredentials({ |
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client: { |
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id: options.clientId, |
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secret: options.clientSecret |
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}, |
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auth: { |
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tokenHost: options.host |
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} |
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}); |
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let tokenPromise: Promise<string>; |
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let accessToken: AccessToken; |
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async function refreshToken():Promise<string>{ |
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try { |
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if (accessToken == null) { |
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accessToken = await client.getToken({}) |
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} |
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if (accessToken.expired(options.refreshThresholdMs / 1000)) { |
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accessToken = await accessToken.refresh() |
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} |
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let expires_in = typeof accessToken.token.expires_in === "number" ? accessToken.token.expires_in : 0; //throw exception
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const nextRefresh = expires_in * 1000 - options.refreshThresholdMs; |
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setTimeout(() => { |
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tokenPromise = refreshToken() |
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}, nextRefresh); |
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let access_token = typeof accessToken.token.access_token === "string" ? accessToken.token.access_token : ""; //throw exception
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return access_token; |
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} catch (error) { |
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throw error; |
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} |
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} |
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tokenPromise = refreshToken(); |
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return async function () { |
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return { |
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value: await tokenPromise |
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} |
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} |
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}; |
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