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DBD::Gofer::Transport:UsereContributed Perl DoDBD::Gofer::Transport::stream(3)

NAME
       DBD::Gofer::Transport::stream - DBD::Gofer transport for	stdio
       streaming

SYNOPSIS
	 DBI->connect('dbi:Gofer:transport=stream;url=ssh:username@host.example.com;dsn=dbi:...',...)

       or, enable by setting the DBI_AUTOPROXY environment variable:

	 export	DBI_AUTOPROXY='dbi:Gofer:transport=stream;url=ssh:username@host.example.com'

DESCRIPTION
       Without the "url=" parameter it launches	a subprocess as

	 perl -MDBI::Gofer::Transport::stream -e run_stdio_hex

       and feeds requests into it and reads responses from it. But that's not
       very useful.

       With a "url=ssh:username@host.example.com" parameter it uses ssh	to
       launch the subprocess on	a remote system. That's	much more useful!

       It gives	you secure remote access to DBI	databases on any system	you
       can login to.  Using ssh	also gives you optional	compression and	many
       other features (see the ssh manual for how to configure that and	many
       other options via ~/.ssh/config file).

       The actual command invoked is something like:

	 ssh -xq ssh:username@host.example.com bash -c $setup $run

       where $run is the command shown above, and $command is

	 . .bash_profile 2>/dev/null ||	. .bash_login 2>/dev/null || . .profile	2>/dev/null; exec "$@"

       which is	trying (in a limited and fairly	unportable way)	to setup the
       environment (PATH, PERL5LIB etc)	as it would be if you had logged in to
       that system.

       The ""perl"" used in the	command	will default to	the value of $^X when
       not using ssh.  On most systems that's the full path to the perl	that's
       currently executing.

PERSISTENCE
       Currently gofer stream connections persist (remain connected) after all
       database	handles	have been disconnected.	This makes later connections
       in the same process very	fast.

       Currently up to 5 different gofer stream	connections (based on url) can
       persist.	 If more than 5	are in the cache when a	new connection is made
       then the	cache is cleared before	adding the new connection. Simple but
       effective.

TO DO
       Document	go_perl	attribute

       Automatically reconnect (within reason) if there's a transport error.

       Decide on default for persistent	connection - on	or off?	limits?	ttl?

AUTHOR
       Tim Bunce, <http://www.tim.bunce.name>

LICENCE	AND COPYRIGHT
       Copyright (c) 2007, Tim Bunce, Ireland. All rights reserved.

       This module is free software; you can redistribute it and/or modify it
       under the same terms as Perl itself. See	perlartistic.

SEE ALSO
       DBD::Gofer::Transport::Base

       DBD::Gofer

perl v5.32.1			  2013-06-24  DBD::Gofer::Transport::stream(3)

NAME | SYNOPSIS | DESCRIPTION | PERSISTENCE | TO DO | AUTHOR | LICENCE AND COPYRIGHT | SEE ALSO

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