Greg,
with NMR Clustering engine, you have right, it's totally transparent and
valid whatever the endpoint's component is. You can use it for HTTP,
SMPP, etc endpoints.
If you compare the SMX4/NMR cluster engine with the SMX3 one, it has
been completely rewritten.
It's not only load-balancing but really clustering with the rollback and
redelivery when a JBI exchange fail, the pause of new exchanges
processing when the number of concurrently processed messages reach a
given threshold.
Charles uses a karaf/smx instance. In this instance, he deploys camel,
camel-jetty and camel-http. It's only load-balancing (not really
clustering).
In pure OSGi, it's maybe possible to use OSGi Remote Services
specification via CXF. Basicly, it provides distributed services (like
RMI-IIOP in the JEE world).
Like this, you can use a bundle service remotely.
It works fine from point A to point B but I never tried to define
cluster or load-balancer with this mechanism. You can find some
informations here:
http://cxf.apache.org/distributed-osgi.html
Maybe Gert or Guillaume have more informations about this.
Regards
JB
Grégory Le Bonniec wrote:
Jean-Baptiste,
What I understand is :
- I we want to call an endpoint transparently we have to use JBI
- I we want to non-JBI cluster, we can use HTTP (like in Charles' example)
or JMS, but it's not transparent
Am I right ?
Regards
Grégory LE BONNIEC
blog : http://java-soa.blogspot.com/
mail : [email protected]
tel : 06.28.40.94.35
2010/1/8 Jean-Baptiste Onofré <[email protected]>
Hi Greg
It's not really component but endpoint.
The cluster engine is a feature not active by default in the NMR. You need
to add it manually.
This cluster engine is in the NMR so only applicable for the JBI world. But
if you have an OSGi bundle that uses a JBI endpoint via the
EndpointExporter, it works.
The explanation is here:
http://servicemix.apache.org/SMX4NMR/13-clustering.html
If you want clustering/load-balancing without JBI, you can use SMX/Camel.
Charles has already make some samples of load balancing:
http://issues.apache.org/activemq/browse/CAMEL-2286
Regards
JB
Grégory Le Bonniec wrote:
Hi,
Concerning ServiceMix 4 Clustering, will it be possible to call a
component
A on a container A from a component B on a container B transparently
without
using JBI ?
Regards
Greg
--
Jean-Baptiste Onofré (Nanthrax)
BuildProcess/AutoDeploy Project Leader
http://buildprocess.sourceforge.net
[email protected]
PGP : 17D4F086
--
Jean-Baptiste Onofré (Nanthrax)
BuildProcess/AutoDeploy Project Leader
http://buildprocess.sourceforge.net
[email protected]
PGP : 17D4F086
