Mailing-List: contact dev-help@activemq.apache.org; run by ezmlm
Precedence: bulk
Reply-To: dev@activemq.apache.org
Received-SPF: pass (athena.apache.org: domain of gary.tully@gmail.com
 designates 209.85.218.228 as permitted sender)
DomainKey-Signature: a=rsa-sha1; c=nofws;
        d=gmail.com; s=gamma;
        h=mime-version:in-reply-to:references:date:message-id:subject:from:to
         :content-type;
        b=w707Nv6qHL0ei9CJBOv4yY/Z/+cR5J1Ybp3zqs6BMBNXgqL+Pb7/sDWTc0KAL58m/a
         4vD/E5jSvEf+a6H3xUzM6eAagp8vmDncBwZfIzc2BXVAJwrJXXRm1sJfer1+3NL60iIJ
         YO3rNcPcOrMmDe/ceoK0mCSktuRUV5HhQQ0Ew=
MIME-Version: 1.0
In-Reply-To: <27473153.post@talk.nabble.com>
References: <27473153.post@talk.nabble.com>
Date: Mon, 8 Feb 2010 16:30:28 +0000
Message-ID: <3a73c17c1002080830iec52e75p9668a36289d4c702@mail.gmail.com>
Subject: Re: Broker discovery when no brokers exist still returns a connection
	factory which cannot be used.
From: Gary Tully <gary.tully@gmail.com>
To: dev@activemq.apache.org
Content-Type: multipart/alternative; boundary=0003255597feaf5b43047f1951e7

--0003255597feaf5b43047f1951e7
Content-Type: text/plain; charset=ISO-8859-1

You may wish to raise an enhancement request for this. There is currently no
way to block till some broker is discovered.
I imagine the best that could be easily achieved is to have start() block
till a broker is discovered, with some variable determining the length of
the block before an exception is thrown.


At teh moment, there is no high level way get notified when a broker is
discovered

On 5 February 2010 19:58, kjones <kjones@safe.com> wrote:

>
> I'm using ActiveMQ 5.3.0 with a single broker running as a stand-alone app
> (not
> embedded).
>
> I have a client consumer app with the following code which finds the broker
> through multicast discovery, obtains a connection to it and a session on
> it:
>
>
> ActiveMQConnectionFactory connectionFactory = new
>
>
> ActiveMQConnectionFactory("discovery:multicast://default?group=myMessageBroker");
>
> ActiveMQConnection msgBrokerConnection =
> (ActiveMQConnection)connectionFactory.createConnection();
>
> Session msgBrokerSession = msgBrokerConnection.createSession(false,
> Session.AUTO_ACKNOWLEDGE);
>
>
> When the broker is running, the above code successfully discovers the
> broker,
> gets a connection to it and a session on it.
>
> However, when the broker is not running, the same code still returns an
> ActiveMQConnectionFactory and a connection to a non-existent broker. The
> subsequent attempt to create a session on this connection fails.
>
> I would ideally like to have the ActiveMQConnectionFactory return null or
> throw
> an exception if no brokers are discovered.
>
> Is there a way to determine when no brokers are discovered?
>
> Any thoughts are appreciated.
> --
> View this message in context:
> http://old.nabble.com/Broker-discovery-when-no-brokers-exist-still-returns-a-connection-factory-which-cannot-be-used.-tp27473153p27473153.html
> Sent from the ActiveMQ - Dev mailing list archive at Nabble.com.
>
>


-- 
http://blog.garytully.com

Open Source Integration
http://fusesource.com

--0003255597feaf5b43047f1951e7--