if network is down ...

[jeff <je...@yahoo.com>]

a request from another user ...

they are asking if there is a way to make ivy:install use from cache only ... for example, network goes down. in this case, ivy:install fails ... but the data is in the cache so theoretically it could just warn the user.

not even sure if this question makes sense ... ?



       
---------------------------------
Take the Internet to Go: Yahoo!Go puts the Internet in your pocket: mail, news, photos & more. 

Re: if network is down ...

[Xavier Hanin <xa...@gmail.com>]

On 5/18/07, jeff <je...@yahoo.com> wrote:
>
> a request from another user ...
>
> they are asking if there is a way to make ivy:install use from cache only
> ... for example, network goes down. in this case, ivy:install fails ... but
> the data is in the cache so theoretically it could just warn the user.
>
> not even sure if this question makes sense ... ?


We will review the cache management in 2.0, so any input is welcome. ATM Ivy
should be able to do the install if you use only static versions, and not
dynamic one. With dynamic versions (like latest, ...), Ivy has to check your
repository. Some have already asked to make it possible to easily say to Ivy
to use the cache only in this case. We will see if we can provide such a
feature in the 2.0 version.

HTH,

Xavier

---------------------------------
> Take the Internet to Go: Yahoo!Go puts the Internet in your pocket: mail,
> news, photos & more.




-- 
Xavier Hanin - Independent Java Consultant
Manage your dependencies with Ivy!
http://incubator.apache.org/ivy/

Re: if network is down ...

[Eric Crahen <er...@gmail.com>]

Having an auto-detect that eventually worked would be somewhat handy, even
if slow eventually something good would happen. I'm envisioning sitting a
bus somewhere and typing something like "ant -Divy.offline=true" to by pass
the autodetection and head right to the cache.


On 5/22/07, Steve Loughran <st...@apache.org> wrote:
>
> jeff wrote:
> > a request from another user ...
> >
> > they are asking if there is a way to make ivy:install use from cache
> only ... for example, network goes down. in this case, ivy:install fails ...
> but the data is in the cache so theoretically it could just warn the user.
> >
> > not even sure if this question makes sense ... ?
> >
> >
> >
> >
> > ---------------------------------
> > Take the Internet to Go: Yahoo!Go puts the Internet in your pocket:
> mail, news, photos & more.
>
> We've discussed this a bit.
>
> one problem is that,there's lots of interesting ways for the remote
> server to be unreachable. It may be the server is not reachable, it
> could be the proxy playing up, DNS down etc. More subtly, your
> laptop/site may be live, while the rest of the network is 'partitioned'
>   and so you need to handle having some repositories reachable but
> others not, which is something you may want in your ivysettings.xml file.
>
> This stuff is hard to test -look how badly java6 behaves when reverse
> DNS fails, or proxy servers stop responding. You can always recognise
> applications written on well-managed networks by how they fail in the
> uncontrolled chaos of consumer home LANs...
>
> -steve
>
>
>


-- 

- Eric

Re: if network is down ...

[Steve Loughran <st...@apache.org>]

jeff wrote:
> a request from another user ...
> 
> they are asking if there is a way to make ivy:install use from cache only ... for example, network goes down. in this case, ivy:install fails ... but the data is in the cache so theoretically it could just warn the user.
> 
> not even sure if this question makes sense ... ?
> 
> 
> 
>        
> ---------------------------------
> Take the Internet to Go: Yahoo!Go puts the Internet in your pocket: mail, news, photos & more. 

We've discussed this a bit.

one problem is that,there's lots of interesting ways for the remote 
server to be unreachable. It may be the server is not reachable, it 
could be the proxy playing up, DNS down etc. More subtly, your 
laptop/site may be live, while the rest of the network is 'partitioned' 
  and so you need to handle having some repositories reachable but 
others not, which is something you may want in your ivysettings.xml file.

This stuff is hard to test -look how badly java6 behaves when reverse 
DNS fails, or proxy servers stop responding. You can always recognise 
applications written on well-managed networks by how they fail in the 
uncontrolled chaos of consumer home LANs...

-steve