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NUG 2004 Grid File Yanker Demo Shreyas Cholia Mass Storage Group, NERSC 06/24/2004

Grid File Yanker is a demo application that allows users to browse and transfer files across different filesystems served by GridFTP servers directly from their web browser. It includes a reliable file transfer mechanism with the ability to restart failed transfer jobs, as well as a convenient interface for submitting and monitoring background file transfer jobs. The application consists of GFY Components, including GFY Server and GFY Client, which provide a SOAP service and a Java applet respectively. The applet offers a GUI filesystem interface for accessing GridFTP servers and transferring files between them without the need for carrying Grid credentials on client machines.

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NUG 2004 Grid File Yanker Demo Shreyas Cholia Mass Storage Group, NERSC 06/24/2004

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  1. NUG 2004 Grid File Yanker Demo Shreyas Cholia Mass Storage Group, NERSC 06/24/2004

  2. Grid File Yanker • Allows users to browse and transfer files, across filesystems served by GridFTP servers, directly from their web browser. • Includes a reliable file transfer mechanism, that attempts to restart failed transfer jobs. • Provides a convenient interface for submitting and monitoring background file transfer jobs.

  3. GFY Components • GFY Server: Java Servlet that runs as a SOAP Service. Users can invoke this via • The GFY Client Applet • Command line tools • Their own SOAP clients that can call the GFY Server API

  4. GFY Components (cont.) • GFY Client: This is a Java applet that can run on any web browser that supports Java 1.4.2 (or higher). • The applet provides a convenient GUI filesystem interface to access GridFTP servers and transfer files between them. • Users do not have to carry Grid credentials on their client machines. The Applet supplies a username / password combination to the GFY Server which uses this to grab Grid credentials from a MyProxy server.

  5. GFY Screen Shot

  6. How it Works … • GFY Client provides username/password combination to GFY Server • GFY Server uses combination to acquire a Grid Proxy Credential from a MyProxy Server, and returns a session identifier to the Client. • GFY Client makes SOAP request to GFY Server to perform Filesystem operation / File Transfer using the session identifier.

  7. How it Works … (cont.) • GFY Server talks to desired GridFTP server(s) with the acquired credential and either • performs the filesystem operation, or • spawns off a background transfer thread to manage the reliable third party transfer between two GridFTP servers. • Client can query the server for the state of current transfer jobs

  8. How it works …

  9. Upcoming Features • Recursive directory copy • Multiple File Transfer / Bulk File operations • Integration with NERSC Portal, including common login and credential sharing • Command line tools to submit transfer jobs to GFY service

  10. Acknowledgements • The GFY was made possible, thanks to the contributions of: • Matt Andrews (NERSC) • Nancy Johnston (NERSC) • Nancy Meyer (NERSC) • Steve Chan (NERSC) • Adam Megacz (XWT Foundation)

  11. Additional Information • FSG Homepage: http://www.nersc.gov/nusers/resources/HPSS • GFY Information: • Contact: • Shreyas Cholia (Mass Storage Group) • Email: scholia@lbl.gov • Phone: (510) 486-6552

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