88 lines
2.5 KiB
TypeScript
88 lines
2.5 KiB
TypeScript
import { metrics } from "@opentelemetry/api"
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import { revalidateTag, unstable_cache } from "next/cache"
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import { env } from "@/env/server"
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import { generateServiceTokenTag } from "@/utils/generateTag"
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import { ServiceTokenResponse } from "@/types/tokens"
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// OpenTelemetry metrics: Service token
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const meter = metrics.getMeter("trpc.context.serviceToken")
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const fetchServiceTokenCounter = meter.createCounter(
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"trpc.context.serviceToken.fetch-new-token"
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)
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const fetchTempServiceTokenCounter = meter.createCounter(
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"trpc.context.serviceToken.fetch-temporary"
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)
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const fetchServiceTokenFailCounter = meter.createCounter(
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"trpc.context.serviceToken.fetch-fail"
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)
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async function fetchServiceToken(scopes: string[]) {
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fetchServiceTokenCounter.add(1)
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const response = await fetch(`${env.CURITY_ISSUER_USER}/oauth/v2/token`, {
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method: "POST",
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headers: {
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"Content-Type": "application/x-www-form-urlencoded",
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Accept: "application/json",
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},
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body: new URLSearchParams({
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grant_type: "client_credentials",
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client_id: env.CURITY_CLIENT_ID_SERVICE,
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client_secret: env.CURITY_CLIENT_SECRET_SERVICE,
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scope: scopes.join(" "),
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}),
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})
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if (!response.ok) {
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fetchServiceTokenFailCounter.add(1, {
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error_type: "http_error",
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error: JSON.stringify({
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status: response.status,
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statusText: response.statusText,
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}),
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})
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throw new Error("Failed to obtain service token")
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}
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return response.json()
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}
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export async function getServiceToken(): Promise<ServiceTokenResponse> {
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try {
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const scopes = ["profile", "hotel", "booking"]
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const tag = generateServiceTokenTag(scopes)
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const getCachedJwt = unstable_cache(
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async (scopes) => {
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const jwt = await fetchServiceToken(scopes)
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const expiresAt = Date.now() + jwt.expires_in * 1000
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return { expiresAt, jwt }
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},
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[tag],
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{ tags: [tag] }
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)
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const cachedJwt = await getCachedJwt(scopes)
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if (cachedJwt.expiresAt < Date.now()) {
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console.log(
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"trpc.context.serviceToken: Service token expired, revalidating tag"
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)
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revalidateTag(tag)
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console.log(
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"trpc.context.serviceToken: Fetching new temporary service token."
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)
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fetchTempServiceTokenCounter.add(1)
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const newToken = await fetchServiceToken(scopes)
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return newToken
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}
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return cachedJwt.jwt
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} catch (error) {
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console.error("Error fetching service token:", error)
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throw error
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}
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}
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