bp_biofetch_genbank_proxy.pl - Caching BioFetch-compatible web proxy for GenBank
Install in cgi-bin directory of a Web server. Stand back.
This CGI script acts as the server side of the BioFetch protocol as described in
http://obda.open-bio.org/Specs/. It provides two database access services, one
for data source "genbank" (nucleotide entries) and the other for
data source "genpep" (protein entries).
This script works by forwarding its requests to NCBI's eutils script, which
lives at https://eutils.ncbi.nlm.nih.gov/entrez/eutils/efetch.fcgi. It then
reformats the output according to the BioFetch format so the sequences can be
processed and returned by the Bio::DB::BioFetch module. Returned entries are
temporarily cached on the Web server's file system, allowing
frequently-accessed entries to be retrieved without another round trip to
You must have the following installed in order to run this script:
2) the perl modules LWP and Cache::FileCache
3) a web server (Apache recommended)
To install this script, copy it into the web server's cgi-bin directory. You
might want to shorten its name; "dbfetch" is recommended.
There are several constants located at the top of the script that you may want
to adjust. These are:
This is the location on the filesystem where the cached files will be located.
The default is /usr/tmp/dbfetch_cache.
This is the maximum size that the cache can grow to. When the cache exceeds this
size older entries will be deleted automatically. The default setting is
100,000,000 bytes (100 MB).
Entries that haven't been accessed in this length of time will be removed from
the cache. The default is 1 week.
This constant specifies how often the cache will be purged for older entries.
The default is 1 hour.
To see if this script is performing as expected, you may test it with this
my $db = Bio::DB::BioFetch->new(-baseaddress=>'http://localhost/cgi-bin/dbfetch',
my $seq = $db->get_Seq_by_id('DDU63596');
This should print out a DNA sequence.
Lincoln Stein, <lstein-at-cshl.org>
Copyright (c) 2003 Cold Spring Harbor Laboratory
This library is free software; you can redistribute it and/or modify it under
the same terms as Perl itself. See DISCLAIMER.txt for disclaimers of