On 10/22/2010 10:54 AM, Jeff Honey wrote:
I am trying to create a function to plug into a restart script I'm creating. I
can't seem to successfully loop through making an http connection, if it fails
to retry, if it succeeds, to end and continue with its parent function.
I'm using the Fabric project's module and including my functions in fabfile.py.
the most rudimentary I've got right now is this:
<snip>
def is_ready():
with settings(
warn_only=True
):
try:
urllib2.urlopen('http://'+env.host_string+'\:8080')
except urllib2.URLError:
time.sleep(10)
urllib2.urlopen('http://'+env.host_string+'\:8080')
</snip>
I am trying to get the 'host_string' environment variable to plug in here but
not sure if the parent function will pass along that information nor if I can
call it like this.
I don't understand this part. Please clarify or show us the parent function.
Additionally, I have never used try/except so I don't know if this will just
try twice and quit. As it is now, it raises URLError and bombs out.
Whenever you want to repeat something you need either a loop or
recursion. A loop is appropriate here.
while True:
try:
urllib2.urlopen('http://'+env.host_string+'\:8080')
except urllib2.URLError:
time.sleep(10)
else:
break
--
Bob Gailer
919-636-4239
Chapel Hill NC
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