From: Dan <dandiebolt@...>
Date: 2010-02-23T03:53:09+09:00
Subject: Ruby Idiom To Retry open() Upto N Times Before Giving Up

--0-241528343-1266864387=:62966
Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: quoted-printable

I write a lot of scripts that I run once or infrequently that uses open-rui=
. Occasionally I run into a web site that times out or is unavailable for a=
 period of time. My normal solution is to just rerun the script manually at=
 a later time and the problem goes away. What I would like to start doing i=
s rescuing the open() and retrying the open() after a delay. What would be =
the most idiomatic way to try opening a url say n times before giving up? H=
ere is my crude code for trying twice:

begin=A0=20
=A0=A0 open("http://www.example.com/foo.html")
=A0rescue=A0=20
=A0=A0 begin=A0=20
=A0=A0=A0=A0=A0 open("http://www.example.com/foo.html")
=A0=A0=A0 rescue=A0=20
=A0=A0=A0=A0=A0 #tried twice - giving up=A0=20
=A0=A0 end=A0=20
end=A0=20

I would like a more general approach using ruby idioms where I could specif=
y the maximum number of attempts and delay before giving up. Thanks for you=
r help.

--0-241528343-1266864387=:62966--