trap-caching.js

"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
exports.getTotalCacheSize = exports.getLanguagesSupportingCaching = exports.uploadTrapCaches = exports.downloadTrapCaches = exports.getTrapCachingExtractorConfigArgsForLang = exports.getTrapCachingExtractorConfigArgs = void 0;
const fs = __importStar(require("fs"));
const path = __importStar(require("path"));
const util_1 = require("util");
const cache = __importStar(require("@actions/cache"));
const get_folder_size_1 = __importDefault(require("get-folder-size"));
const actionsUtil = __importStar(require("./actions-util"));
const codeql_1 = require("./codeql");
const util_2 = require("./util");
// This constant should be bumped if we make a breaking change
// to how the CodeQL Action stores or retrieves the TRAP cache,
// and will invalidate previous caches. We don't need to bump
// this for CLI/extractor changes, since the CLI version also
// goes into the cache key.
const CACHE_VERSION = 1;
// This constant sets the size of each TRAP cache in megabytes.
const CACHE_SIZE_MB = 1024;
async function getTrapCachingExtractorConfigArgs(config) {
    const result = [];
    for (const language of config.languages)
        result.push(await getTrapCachingExtractorConfigArgsForLang(config, language));
    return result.flat();
}
exports.getTrapCachingExtractorConfigArgs = getTrapCachingExtractorConfigArgs;
async function getTrapCachingExtractorConfigArgsForLang(config, language) {
    const cacheDir = config.trapCaches[language];
    if (cacheDir === undefined)
        return [];
    const write = await actionsUtil.isAnalyzingDefaultBranch();
    return [
        `-O=${language}.trap.cache.dir=${cacheDir}`,
        `-O=${language}.trap.cache.bound=${CACHE_SIZE_MB}`,
        `-O=${language}.trap.cache.write=${write}`,
    ];
}
exports.getTrapCachingExtractorConfigArgsForLang = getTrapCachingExtractorConfigArgsForLang;
/**
 * Download TRAP caches from the Actions cache.
 * @param codeql The CodeQL instance to use.
 * @param languages The languages being analyzed.
 * @param logger A logger to record some informational messages to.
 * @returns A partial map from languages to TRAP cache paths on disk, with
 * languages for which we shouldn't use TRAP caching omitted.
 */
async function downloadTrapCaches(codeql, languages, logger) {
    var _a, _b;
    const result = {};
    const languagesSupportingCaching = await getLanguagesSupportingCaching(codeql, languages, logger);
    logger.info(`Found ${languagesSupportingCaching.length} languages that support TRAP caching`);
    if (languagesSupportingCaching.length === 0)
        return result;
    const cachesDir = path.join(actionsUtil.getTemporaryDirectory(), "trapCaches");
    for (const language of languagesSupportingCaching) {
        const cacheDir = path.join(cachesDir, language);
        fs.mkdirSync(cacheDir, { recursive: true });
        result[language] = cacheDir;
    }
    if (await actionsUtil.isAnalyzingDefaultBranch()) {
        logger.info("Analyzing default branch. Skipping downloading of TRAP caches.");
        return result;
    }
    let baseSha = "unknown";
    const eventPath = process.env.GITHUB_EVENT_PATH;
    if (process.env.GITHUB_EVENT_NAME === "pull_request" &&
        eventPath !== undefined) {
        const event = JSON.parse(fs.readFileSync(path.resolve(eventPath), "utf-8"));
        baseSha = ((_b = (_a = event.pull_request) === null || _a === void 0 ? void 0 : _a.base) === null || _b === void 0 ? void 0 : _b.sha) || baseSha;
    }
    for (const language of languages) {
        const cacheDir = result[language];
        if (cacheDir === undefined)
            continue;
        // The SHA from the base of the PR is the most similar commit we might have a cache for
        const preferredKey = await cacheKey(codeql, language, baseSha);
        logger.info(`Looking in Actions cache for TRAP cache with key ${preferredKey}`);
        const found = await cache.restoreCache([cacheDir], preferredKey, [
            await cachePrefix(codeql, language), // Fall back to any cache with the right key prefix
        ]);
        if (found === undefined) {
            // We didn't find a TRAP cache in the Actions cache, so the directory on disk is
            // still just an empty directory. There's no reason to tell the extractor to use it,
            // so let's unset the entry in the map so we don't set any extractor options.
            logger.info(`No TRAP cache found in Actions cache for ${language}`);
            result[language] = undefined;
        }
    }
    return result;
}
exports.downloadTrapCaches = downloadTrapCaches;
/**
 * Possibly upload TRAP caches to the Actions cache.
 * @param codeql The CodeQL instance to use.
 * @param config The configuration for this workflow.
 * @param logger A logger to record some informational messages to.
 * @returns Whether the TRAP caches were uploaded.
 */
async function uploadTrapCaches(codeql, config, logger) {
    if (!(await actionsUtil.isAnalyzingDefaultBranch()))
        return false; // Only upload caches from the default branch
    const toAwait = [];
    for (const language of config.languages) {
        const cacheDir = config.trapCaches[language];
        if (cacheDir === undefined)
            continue;
        const key = await cacheKey(codeql, language, process.env.GITHUB_SHA || "unknown");
        logger.info(`Uploading TRAP cache to Actions cache with key ${key}`);
        toAwait.push(cache.saveCache([cacheDir], key));
    }
    await Promise.all(toAwait);
    return true;
}
exports.uploadTrapCaches = uploadTrapCaches;
async function getLanguagesSupportingCaching(codeql, languages, logger) {
    var _a, _b, _c, _d;
    const result = [];
    if (!(await (0, util_2.codeQlVersionAbove)(codeql, codeql_1.CODEQL_VERSION_BETTER_RESOLVE_LANGUAGES)))
        return result;
    const resolveResult = await codeql.betterResolveLanguages();
    outer: for (const lang of languages) {
        if (resolveResult.extractors[lang].length !== 1)
            continue;
        const extractor = resolveResult.extractors[lang][0];
        const trapCacheOptions = (_d = (_c = (_b = (_a = extractor.extractor_options) === null || _a === void 0 ? void 0 : _a.trap) === null || _b === void 0 ? void 0 : _b.properties) === null || _c === void 0 ? void 0 : _c.cache) === null || _d === void 0 ? void 0 : _d.properties;
        if (trapCacheOptions === undefined) {
            logger.info(`${lang} does not support TRAP caching (missing option group)`);
            continue;
        }
        for (const requiredOpt of ["dir", "bound", "write"]) {
            if (!(requiredOpt in trapCacheOptions)) {
                logger.info(`${lang} does not support TRAP caching (missing ${requiredOpt} option)`);
                continue outer;
            }
        }
        result.push(lang);
    }
    return result;
}
exports.getLanguagesSupportingCaching = getLanguagesSupportingCaching;
async function getTotalCacheSize(trapCaches, logger) {
    try {
        const sizes = await Promise.all(Object.values(trapCaches).map(async (cacheDir) => {
            return (0, util_1.promisify)(get_folder_size_1.default)(cacheDir);
        }));
        return sizes.reduce((a, b) => a + b, 0);
    }
    catch (e) {
        logger.warning(`Encountered an error while getting TRAP cache size: ${e}`);
        return 0;
    }
}
exports.getTotalCacheSize = getTotalCacheSize;
async function cacheKey(codeql, language, baseSha) {
    return `${await cachePrefix(codeql, language)}${baseSha}`;
}
async function cachePrefix(codeql, language) {
    return `codeql-trap-${CACHE_VERSION}-${await codeql.getVersion()}-${language}-`;
}
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