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<div class="content" data-ice="content"><h1 data-ice="title">src/component/cache/s3-unpacked-driver.js</h1>
<pre class="source-code line-number raw-source-code"><code class="prettyprint linenums" data-ice="content">&apos;use strict&apos;;

const fs = require(&apos;fs-extra&apos;);
const path = require(&apos;path&apos;);
const S3Driver = require(&apos;./s3-driver&apos;);
const { findFilesByPattern } = require(&apos;../../helper/util&apos;);

/**
 * AWS S3 (unpacked) cache driver
 */
class S3UnpackedDriver extends S3Driver {
  /**
   * @param {String} cacheDir
   * @param {String} baseDir
   * @param {String} s3path
   * @param {Object} s3options
   */
  constructor(cacheDir, baseDir, s3path, s3options) {
    super(cacheDir, s3path, s3options, false);

    this._baseDir = baseDir;
  }

  /**
   * @returns {String}
   */
  get name() {
    return &apos;s3-unpacked&apos;;
  }

  /**
   * @returns {String}
   * @private
   */
  get _packagePath() {
    return this.cacheDir;
  }

  /**
   * @returns {Promise}
   * @private
   */
  _download() {
    const { Bucket, Key } = this._s3Location(this.path);

    return this.client.then(S3 =&gt; {
      return S3.listObjectsV2({ Bucket: Bucket, Prefix: Key }).promise();
    }).then(listRes =&gt; {
      let keys = listRes.Contents.filter(item =&gt; item.Size).map(item =&gt; item.Key);

      return Promise.all(keys.map(key =&gt; {
        return this._getAndSaveS3Object(key, key.replace(Key, this.cacheDir));
      }));
    });
  }

  /**
   * @returns {Promise}
   * @private
   */
  _unpack() {
    return Promise.resolve();
  }

  /**
   * @returns {Promise}
   * @private
   */
  _pack() {
    return Promise.resolve();
  }

  /**
   * @returns {Promise}
   * @private
   */
  _removePackageFile() {
    return Promise.resolve();
  }

  /**
   * @returns {Promise}
   * @private
   */
  _upload() {
    const { Bucket, Key } = this._s3Location(this.path);
    const list = findFilesByPattern(this.cacheDir, /.*/);

    return Promise.all(
      list.map(filePath =&gt; {
        const stream = fs.createReadStream(filePath);
        const tfResource = Key.split(&apos;/&apos;).pop();
        const additionalKey = filePath.substring(filePath.lastIndexOf(tfResource) + tfResource.length);
        const fullS3Key = path.normalize(`${Key}/${additionalKey}`);

        return this.client.then(S3 =&gt; {
          return S3.upload({ Bucket: Bucket, Key: fullS3Key, Body: stream }).promise();
        });
      })
    );
  }

  /**
   * Get S3 object and save it to local path
   * @param {String} objectKey
   * @param {String} pathToSave
   * @returns {Promise}
   */
  _getAndSaveS3Object(objectKey, pathToSave) {
    return this.client.then(S3 =&gt; {
      const { Bucket } = this._s3Location(this.path);

      return S3.getObject({ Bucket: Bucket, Key: objectKey }).promise().then(content =&gt; {
        return fs.outputFile(pathToSave, content.Body);
      });
    });
  }
}

module.exports = S3UnpackedDriver;
</code></pre>

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