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64 changes: 64 additions & 0 deletions
64
packages/timeline-state-resolver/src/integrations/httpSend/AuthenticatedHTTPSendDevice.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| import { HTTPSendOptions } from 'timeline-state-resolver-types' | ||
| import { HTTPSendDevice, HttpSendDeviceCommand } from '.' | ||
| import { AccessToken, ClientCredentials } from 'simple-oauth2' | ||
|
|
||
| export class AuthenticatedHTTPSendDevice extends HTTPSendDevice { | ||
| private tokenPromise: Promise<AccessToken> | undefined | ||
| private authOptions: { clientId: string; clientSecret: string; tokenHost: string; audience?: string } | undefined | ||
|
|
||
| async init(options: HTTPSendOptions): Promise<boolean> { | ||
| if (options.oauthClientId && options.oauthClientSecret && options.oauthTokenHost) { | ||
| this.authOptions = { | ||
| clientId: options.oauthClientId, | ||
| clientSecret: options.oauthClientSecret, | ||
| audience: options.oauthAudience, | ||
| tokenHost: options.oauthTokenHost, | ||
| } | ||
| const promise = this.requestAccessToken() | ||
| promise.catch( | ||
| (e) => { | ||
| this.emit('error', 'AuthenticatedHTTPSendDevice', e) | ||
| } | ||
| // retry | ||
| ) | ||
| this.tokenPromise = promise | ||
| } | ||
| return super.init(options) | ||
| } | ||
|
|
||
| async requestAccessToken(): Promise<AccessToken> { | ||
| if (!this.authOptions) { | ||
| throw Error('authOptions missing') | ||
| } | ||
| const token = await new ClientCredentials({ | ||
| client: { | ||
| id: this.authOptions.clientId, | ||
| secret: this.authOptions.clientSecret, | ||
| }, | ||
| auth: { | ||
| tokenHost: this.authOptions.tokenHost, | ||
| }, | ||
| }).getToken({}) | ||
| return token | ||
| } | ||
|
|
||
| async sendCommand({ tlObjId, context, command }: HttpSendDeviceCommand): Promise<void> { | ||
| if (this.options) { | ||
| const bearerToken = await this.tokenPromise | ||
| if (bearerToken) { | ||
| if (bearerToken.expired()) { | ||
| // todo: this should happen only once | ||
| this.tokenPromise = bearerToken.refresh() | ||
| } | ||
| command = { | ||
| ...command, | ||
| content: { | ||
| ...command.content, | ||
| headers: { ...command.content.headers, ['Authorization']: `Bearer ${bearerToken.token.access_token}` }, | ||
| }, | ||
| } | ||
| } | ||
| } | ||
| return super.sendCommand({ tlObjId, context, command }) | ||
| } | ||
| } |
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