Static Files

Introduction

In order to increase performance pre-generated derivatives will be cached and served via an http server such as varnish.

URLs

http://<environment URL>/static/<guid>/<file>

Files For the bookreader:

http://<environment URL>/static/<guid>/jp2/<guid>_<page number>.jpg

Examples:

http://bhl-test.nhm.ac.uk/static/a0hhmgs6/a0hhmgs6_mods.xml <-- test environment

http://www.bhl-europe.eu/static/a0hhmgs6/a0hhmgs6_mods.xml <-- production environment

http://www.bhl-europe.eu/static/a0hhmgs6/a0hhmgs6_olef.xml
http://www.bhl-europe.eu/static/a0hhmgs6/a0hhmgs6_bibtex.bib
http://www.bhl-europe.eu/static/a0hhmgs6/a0hhmgs6_endnote.end

http://www.bhl-europe.eu/static/a0hhmgs6/a0hhmgs6_thumbnail.jpg <-- more details below


http://www.bhl-europe.eu/static/a0hhmgs6/a0hhmgs6_full_pdf.pdf
http://www.bhl-europe.eu/static/a0hhmgs6/a0hhmgs6_full_jpg.zip
http://www.bhl-europe.eu/static/a0hhmgs6/a0hhmgs6_full_ocr.txt

Thumbnails:

Thumbnails are not be generated when the item is ingested, which means we should request the generation of thumbnails at the first time. From the Portal side, this should be broken into two steps:
1. Hit http://www.bhl-europe.eu/static/<guid>/<guid>_thumbnail.jpg to see whether the thumbnail is available.
2. If not (return 404 NOT FOUND), then try http://www.bhl-europe.eu/access/download/<guid>/thumbnail

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File Storage

The files will be stored on the fileshare. There is no limit to the number of folders in a folder in GPFS however in order to avoid too many sub-folders we store the files in some sort of tree like a pairtree.

File Schema

something like a pairtree

Examples

/mnt/nfs/production/access/items/a0/hh/mg/s6/a0hhmgs6/ <--> http://www.bhl-europe.eu/access/items/a0hhmgs6

Files For the bookreader:

/mnt/nfs/production/access/items/a0/hh/mg/s6/a0hhmgs6/jpg/a0hhmgs6_00001.jpg