Package de.iip_ecosphere.platform.deviceMgt.storage

Interface Storage

public interface Storage
A Storage grants access to different files/objects.
Author:
Dennis Pidun, University of Hildesheim

  • Method Summary

    Modifier and Type
    Method
    Description
    String
    generateDownloadUrl(String key)
    Generate a pre-signed URL, so one can download (GET) the desired data.
    String
    getPrefix()
    Get the prefix the storage is locked on.
    Set<String>
    list()
    Lists the content under the desired prefix.
    void
    storeFile(String key, File file)
    Stores a given file based on a given key.

  • Method Details

    • getPrefix

      String getPrefix()
      Get the prefix the storage is locked on. In filesystem terminology this would be the folder the data is lying in.
      Returns:
      the prefix

    • list

      Set<String> list()
      Lists the content under the desired prefix.
      Returns:
      a set of paths

    • generateDownloadUrl

      String generateDownloadUrl(String key)
      Generate a pre-signed URL, so one can download (GET) the desired data. Use, e.g., UriResolver to transparently download a remote URL.
      Parameters:
      key - the key, mapping to a file in a folder.
      Returns:
      pre-signed Download-URL (http-protocol)

    • storeFile

      void storeFile(String key, File file) throws IOException
      Stores a given file based on a given key.
      Parameters:
      key - the key to denote the storage location
      file - the file to store
      Throws:
      IOException