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import * as core from "@actions/core";
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import * as fs from "fs";
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import { BearerCredentialHandler } from "typed-rest-client/Handlers";
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import { HttpClient } from "typed-rest-client/HttpClient";
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import { IHttpClientResponse } from "typed-rest-client/Interfaces";
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import { IRequestOptions, RestClient } from "typed-rest-client/RestClient";
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import { ArtifactCacheEntry } from "./contracts";
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function getCacheUrl(): string {
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// Ideally we just use ACTIONS_CACHE_URL
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const cacheUrl: string = (
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process.env["ACTIONS_CACHE_URL"] ||
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process.env["ACTIONS_RUNTIME_URL"] ||
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""
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).replace("pipelines", "artifactcache");
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if (!cacheUrl) {
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throw new Error(
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"Cache Service Url not found, unable to restore cache."
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);
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}
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core.debug(`Cache Url: ${cacheUrl}`);
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return cacheUrl;
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}
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function createAcceptHeader(type: string, apiVersion: string): string {
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return `${type};api-version=${apiVersion}`;
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}
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function getRequestOptions(): IRequestOptions {
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const requestOptions: IRequestOptions = {
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acceptHeader: createAcceptHeader("application/json", "5.2-preview.1")
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};
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return requestOptions;
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}
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export async function getCacheEntry(
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keys: string[]
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): Promise<ArtifactCacheEntry | null> {
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const cacheUrl = getCacheUrl();
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const token = process.env["ACTIONS_RUNTIME_TOKEN"] || "";
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const bearerCredentialHandler = new BearerCredentialHandler(token);
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const resource = `_apis/artifactcache/cache?keys=${encodeURIComponent(
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keys.join(",")
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)}`;
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const restClient = new RestClient("actions/cache", cacheUrl, [
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bearerCredentialHandler
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]);
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const response = await restClient.get<ArtifactCacheEntry>(
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resource,
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getRequestOptions()
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);
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if (response.statusCode === 204) {
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return null;
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}
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if (response.statusCode !== 200) {
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throw new Error(`Cache service responded with ${response.statusCode}`);
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}
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const cacheResult = response.result;
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core.debug(`Cache Result:`);
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core.debug(JSON.stringify(cacheResult));
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if (!cacheResult || !cacheResult.archiveLocation) {
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throw new Error("Cache not found.");
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}
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return cacheResult;
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}
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async function pipeResponseToStream(
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response: IHttpClientResponse,
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stream: NodeJS.WritableStream
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): Promise<void> {
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return new Promise(resolve => {
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response.message.pipe(stream).on("close", () => {
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resolve();
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});
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});
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}
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export async function downloadCache(
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cacheEntry: ArtifactCacheEntry,
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archivePath: string
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): Promise<void> {
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const stream = fs.createWriteStream(archivePath);
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const httpClient = new HttpClient("actions/cache");
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// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
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const downloadResponse = await httpClient.get(cacheEntry.archiveLocation!);
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await pipeResponseToStream(downloadResponse, stream);
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}
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export async function saveCache(
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stream: NodeJS.ReadableStream,
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key: string
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): Promise<void> {
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const cacheUrl = getCacheUrl();
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const token = process.env["ACTIONS_RUNTIME_TOKEN"] || "";
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const bearerCredentialHandler = new BearerCredentialHandler(token);
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const resource = `_apis/artifactcache/cache/${encodeURIComponent(key)}`;
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const postUrl = cacheUrl + resource;
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const restClient = new RestClient("actions/cache", undefined, [
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bearerCredentialHandler
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]);
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const requestOptions = getRequestOptions();
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requestOptions.additionalHeaders = {
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"Content-Type": "application/octet-stream"
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};
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const response = await restClient.uploadStream<void>(
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"POST",
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postUrl,
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stream,
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requestOptions
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);
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if (response.statusCode !== 200) {
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throw new Error(`Cache service responded with ${response.statusCode}`);
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}
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core.info("Cache saved successfully");
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}
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