Method new

src/config.ts:56–295

* Constructs a [`CacheConfig`] with all the paths and keys. * * This will read the action `input`s, and read and persist `state` as necessary.

()

   * This will read the action `input`s, and read and persist `state` as necessary.
   */
  static async new(): Promise<CacheConfig> {
    const self = new CacheConfig();

    let cmdFormat = core.getInput("cmd-format");
    if (cmdFormat) {
      const placeholderMatches = cmdFormat.match(/\{0\}/g);
      if (!placeholderMatches || placeholderMatches.length !== 1) {
        cmdFormat = "{0}";
      }
    } else {
      cmdFormat = "{0}";
    }
    self.cmdFormat = cmdFormat;

    // Construct key prefix:
    // This uses either the `shared-key` input,
    // or the `key` input combined with the `job` key.

    let key = core.getInput("prefix-key") || "v0-rust";

    const sharedKey = core.getInput("shared-key");
    if (sharedKey) {
      key += `-${sharedKey}`;
    } else {
      const inputKey = core.getInput("key");
      if (inputKey) {
        key += `-${inputKey}`;
      }

      const job = process.env.GITHUB_JOB;
      if (job && core.getInput("add-job-id-key").toLowerCase() == "true") {
        key += `-${job}`;
      }
    }

    // Add runner OS and CPU architecture to the key to avoid cross-contamination of cache
    const runnerOS = os.type();
    const runnerArch = os.arch();
    key += `-${runnerOS}-${runnerArch}`;

    self.keyPrefix = key;

    // Construct environment portion of the key:
    // This consists of a hash that considers the rust version
    // as well as all the environment variables as given by a default list
    // and the `env-vars` input.
    // The env vars are sorted, matched by prefix and hashed into the
    // resulting environment hash.

    let hasher = crypto.createHash("sha1");
    const rustVersions = Array.from(await getRustVersions(cmdFormat));
    // Doesn't matter how they're sorted, just as long as it's deterministic.
    rustVersions.sort();

    for (const rustVersion of rustVersions) {
      const { release, host, "commit-hash": commitHash } = rustVersion;
      const keyRust = `${release} ${host} ${commitHash}`;
      hasher.update(keyRust);