On Tue, Jun 23, 2009 at 4:04 AM, Joe Gottman <josephgott...@comcast.net>wrote:
>
>
>
> Claus Ibsen-2 wrote:
> >
> > On Thu, Jun 18, 2009 at 2:59 PM, Joe Gottman
> > <josephgott...@comcast.net>wrote:
> >
> >>
> >> Suppose I have a route that begins with something like
> >>
> >> from("file://c:\foo\bar")
> >>
> >> and I want to catch and handle any Exceptions thrown from this endpoint.
> >> Is
> >> there any way to do this? I can surround a subsequent "to" in a "doTry"
> >> ...
> >> "doCatch" block, but there doesn't seem to be any way to do this for the
> >> "from" clause. Am I missing something, or is this a problem with the
> >> DSL?
> >
> >
> > Hi
> >
> > All the error handling in Camel such as onException, dead letter channel
> > kicks in when an exchange is created and routed.
> > So if an exception occurs beforehand such as inside the file consumer (eg
> > a
> > bug in Camel) then the component itself has a mechanism to handle that.
> >
> >
> >>
> >> --
> >> View this message in context:
> >>
> http://www.nabble.com/Catching-errors-from--%22from%22-endpoints-tp24092503p24092503.html
> >> Sent from the Camel Development mailing list archive at Nabble.com.
> >>
> >>
> >
> >
>
> But a Producer, especially a polling Producer, can fail after it is
> started. For instance, a file producer like
> from("file://H:/foo")
>
> could fail because the network connection to the H: drive was lost. Is
> there any way to set up the route to handle that?
>
No you can use the ErrorHandler on the Consumer to handle this exception.
>From this ErrorHandler you can send a message to a route to let it handle
it, however its not like a first class DSL error handling with the
onException etc.
As the DSL error handling is when an Exchange (= Message) have been created
and then there is a failure when routing this message.
The consumer on the other hand fails before an Exchange (= Message) have
been created and thus the DSL error handling cannot be used here.
The consumer is also scheduled so it will try again on next poll.
>
> --
> View this message in context:
> http://www.nabble.com/Catching-errors-from--%22from%22-endpoints-tp24092503p24158601.html
> Sent from the Camel Development mailing list archive at Nabble.com.
>
>
--
Claus Ibsen
Apache Camel Committer
Open Source Integration: http://fusesource.com
Blog: http://davsclaus.blogspot.com/
Twitter: http://twitter.com/davsclaus
