How to use

toString

method

in

org.apache.flink.runtime.blob.BlobKey

/**
 * Returns the path for the given blob key.
 *
 * <p>The returned path can be used with the state backend for recovery purposes.
 *
 * <p>This follows the same scheme as {@link #getStorageLocation(File, BlobKey)}
 * and is used for HA.
 */
static String getRecoveryPath(String basePath, BlobKey blobKey) {
  // format: $base/cache/blob_$key
  return String.format("%s/cache/%s%s", basePath, BLOB_FILE_PREFIX, blobKey.toString());
}

/**
 * Returns the (designated) physical storage location of the BLOB with the given key.
 *
 * @param key
 *        the key identifying the BLOB
 * @return the (designated) physical storage location of the BLOB
 */
static File getStorageLocation(File storageDir, BlobKey key) {
  return new File(getCacheDirectory(storageDir), BLOB_FILE_PREFIX + key.toString());
}

/**
 * Returns the path for the given blob key.
 *
 * <p>The returned path can be used with the (local or HA) BLOB store file system back-end for
 * recovery purposes and follows the same scheme as {@link #getStorageLocation(File, JobID,
 * BlobKey)}.
 *
 * @param storageDir
 *         storage directory used be the BLOB service
 * @param key
 *         the key identifying the BLOB
 * @param jobId
 *         ID of the job for the incoming files
 *
 * @return the path to the given BLOB
 */
static String getStorageLocationPath(
    String storageDir, @Nullable JobID jobId, BlobKey key) {
  if (jobId == null) {
    // format: $base/no_job/blob_$key
    return String.format("%s/%s/%s%s",
      storageDir, NO_JOB_DIR_PREFIX, BLOB_FILE_PREFIX, key.toString());
  } else {
    // format: $base/job_$jobId/blob_$key
    return String.format("%s/%s%s/%s%s",
      storageDir, JOB_DIR_PREFIX, jobId.toString(), BLOB_FILE_PREFIX, key.toString());
  }
}

/**
 * Returns the path for the given blob key.
 *
 * <p>The returned path can be used with the (local or HA) BLOB store file system back-end for
 * recovery purposes and follows the same scheme as {@link #getStorageLocation(File, JobID,
 * BlobKey)}.
 *
 * @param storageDir
 *         storage directory used be the BLOB service
 * @param key
 *         the key identifying the BLOB
 * @param jobId
 *         ID of the job for the incoming files
 *
 * @return the path to the given BLOB
 */
static String getStorageLocationPath(
    String storageDir, @Nullable JobID jobId, BlobKey key) {
  if (jobId == null) {
    // format: $base/no_job/blob_$key
    return String.format("%s/%s/%s%s",
      storageDir, NO_JOB_DIR_PREFIX, BLOB_FILE_PREFIX, key.toString());
  } else {
    // format: $base/job_$jobId/blob_$key
    return String.format("%s/%s%s/%s%s",
      storageDir, JOB_DIR_PREFIX, jobId.toString(), BLOB_FILE_PREFIX, key.toString());
  }
}

/**
 * Returns the path for the given blob key.
 *
 * <p>The returned path can be used with the (local or HA) BLOB store file system back-end for
 * recovery purposes and follows the same scheme as {@link #getStorageLocation(File, JobID,
 * BlobKey)}.
 *
 * @param storageDir
 *         storage directory used be the BLOB service
 * @param key
 *         the key identifying the BLOB
 * @param jobId
 *         ID of the job for the incoming files
 *
 * @return the path to the given BLOB
 */
static String getStorageLocationPath(
    String storageDir, @Nullable JobID jobId, BlobKey key) {
  if (jobId == null) {
    // format: $base/no_job/blob_$key
    return String.format("%s/%s/%s%s",
      storageDir, NO_JOB_DIR_PREFIX, BLOB_FILE_PREFIX, key.toString());
  } else {
    // format: $base/job_$jobId/blob_$key
    return String.format("%s/%s%s/%s%s",
      storageDir, JOB_DIR_PREFIX, jobId.toString(), BLOB_FILE_PREFIX, key.toString());
  }
}