Okay, I've got the auction part of the dash adventure completed. In principle, the rest should be relatively easy. The code isn't vastly useful or commented so far, it's just a proof of concept really.
The script doesn't prune unlikely matches (e.g. socat+ssh when ssh is
already provided), because that doesn't work in the general case: say
there are two pipelines, a->b->c and a->c->b. If a->b->c fails, it
could be due to a problem in a, b, c, or some interaction between the
three. Without knowing more about the error, we can't assume that
a->c->b will fail. Here's a rough guide to the script:
* Right now, the script reads bids from remote_help.txt, but will
eventually take bids by polling a separate set of module scripts
* A module script is run with a to-be-decided set of command line
arguments. I'm currently thinking it'll be something like:
my-module.sh --want remote-shell --remoteuser andrew \
--remotehost example.com
this will have to be decided as modules are written - there'll
doubtless be some rules, some precedents, and some totally
protocol-specific things
* Modules that sub-contract part of the job will be assumed to handle
subcontracts internally (it's just a matter of calling remote_help.sh
again with the appropriate arguments)
* Every module is polled in every auction. Inapplicable scripts will
return no bids, bids with a variety of subcontractors will return
multiple bids
* A bid is a line printed on standard output, of the form:
<integer> <command line>
The integer is the bid, the remainder of the line is a command to pass
to /bin/sh
* The highest bidder is repeatedly run until a bidder returns
successfully (note: currently, all bids are run)
* This would have been a lot easier if I could rely on `sort` and `head`
existing!
How should we proceed with this? Set up some space on Sourceforge? Do
you have any better ideas for names than "remote help"?
- Andrew
remote_help.sh
Description: application/shellscript
-1 echo problem 3 /bin/false 2 echo foo 2 echo ' 2' 3 echo bar
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