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Subject: RE: from http://... to file://...
Date: Mon, 23 Jun 2008 10:24:24 +0200
Message-ID: <4C1FB9C00D24A140906239533638C4D2049DD4F8@EXVS04.exserver.dk>
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Thread-Topic: from http://... to file://...
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From: "Claus Ibsen" <ci@silverbullet.dk>
To: <camel-user@activemq.apache.org>,
	<patrick@ps1.net>

Hi Patrick

Argh I do think that it's only exposed on the Exchange interface in 1.4.
In Camel 1.3 you can cast the Exchange to DefaultExchange and use the =
setPattern method.

BTW: I will try to investigate why the FileProducer is doing the polling =
when it's an InOut exchange - I can not see the reason for it.


Med venlig hilsen
=20
Claus Ibsen
......................................
Silverbullet
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8362 H=F8rning
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Web: www.silverbullet.dk
-----Original Message-----
From: Patrick Shea [mailto:patrick@ps1.net]=20
Sent: 23. juni 2008 10:05
To: camel-user@activemq.apache.org
Subject: RE: from http://... to file://...

Claus, I don't see a setPattern(...) on the Exchange class in 1.3?

Patrick

-----Original Message-----
From: "Claus Ibsen" <ci@silverbullet.dk>
Sent: Monday, June 23, 2008 1:08am
To: camel-user@activemq.apache.org
Subject: RE: from http://... to file://...

Hi Joe

By all means please post any questions you have to this user forum.=20

Ad 1)
Yes your observations is correct. If the file component gets an out =
capable exchange then its trying to poll the file. So you need to change =
the mep pattern to inonly.

The HTTP protocol is by nature request-response based so that is why =
Camel will send back a response if you use camel-jetty. You should =
probably send back a response with HTTP STATUS 200 to indicate to the =
client that you have accepted/consume his request.

Ad 2)
Send a response back to the client.

Ad 3)
You can use a processor to change/handle the exchange programmatically.
from("xxx").process(new MyProcessor()).to("yyy")


Here is some help for your route to do what you want:

    protected RouteBuilder createRouteBuilder() throws Exception {
        return new RouteBuilder() {
            public void configure() throws Exception {
                =
from("jetty:http://localhost:8080/myworld").to("seda:in").setBody(constan=
t("We got your request"));

                from("seda:in").process(new MyJettyProcessor()).
                    setHeader(FileComponent.HEADER_FILE_NAME, =
"hello.txt").to("file://target/myworld");
            }
        };
    }

    private class MyJettyProcessor implements Processor {
        public void process(Exchange exchange) throws Exception {
            // must convert to in only as file producer will try to load =
the file if the exchange pattner
            // is out capable.
            exchange.setPattern(ExchangePattern.InOnly);
        }
    }


Med venlig hilsen
=20
Claus Ibsen
......................................
Silverbullet
Skovsg=E5rdsv=E6nget 21
8362 H=F8rning
Tlf. +45 2962 7576
Web: www.silverbullet.dk

-----Original Message-----
From: Joe Satch [mailto:upadhyay.k@gmail.com]=20
Sent: 22. juni 2008 22:18
To: camel-user@activemq.apache.org
Subject: RE: from http://... to file://...


Hi,

I am quite new to camel, so plz excuse me if i say something =
fundamentally
wrong.=20
What i am not able to understand here is that if I wish to open an http
serversocket to listen to requests and persist them to a file, how do i =
go
for it. I could open a serversocket using jetty component, and then I =
routed
the incoming messages to a file URI. It threw me exception.

My analysis of the problem was that the jetty server component makes an
Inout exchange and forwards the content to file URI and waits for the
response to come as it instantiated an Inout MEP. And it never gets the
response back as the file component probably expects an Inonly MEP or
something of that sort.=20

My questions

1. Is my analysis wrong.
2. If I wish to do what i am trying to, how do I go abt it ?
3. How do I trap an exchange programtically and then do something with =
it ?
thanks


>Ah the issue is that the Jetty component is an EventDrivenConsumer and =
not
Scheduled. So you have to >trigger the event yourself to start the event =
in
jetty.
>Eg:
>from("timer://foo?fixedRate=3Dtrue&delay=3D0&period=3D10000").to("jetty:=
http://www.google.com").setHeader>(FileComponent.HEADER_FILE_NAME,
"message.txt").to("file:target/hello");

>This will invoke the google homepage every 10th second and store it as =
a
file.
>http://activemq.apache.org/camel/event-driven-consumer.html


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