Hi, As Camel property placeholder supports to lookup the Properties from the bean reference with the prefix "ref:BeanId", I think you just need to add a reference of the property service in the camel route bundle.
-- Willem Jiang Red Hat, Inc. FuseSource is now part of Red Hat Web: http://www.fusesource.com | http://www.redhat.com Blog: http://willemjiang.blogspot.com (http://willemjiang.blogspot.com/) (English) http://jnn.iteye.com (http://jnn.javaeye.com/) (Chinese) Twitter: willemjiang Weibo: 姜宁willem On Wednesday, February 6, 2013 at 2:13 AM, CharlieD wrote: > I want to have centralized shared properties (shared across camel contexts) > to define things, particularly ActiveMQ endpoints. Furthermore, I want to > avoid using /etc/custom.properties, unless I'm unaware of a refresh > mechanism that doesn't require restarting karaf and therefore all bundles. A > point of consideration here is that if I were to use this for endpoints, I > would have to restart the bundles producing to and consuming from them in > order to get changed property values. This is true. It still seems more > concise than bouncing the whole VM and all bundles to get the new > properties. > > Here's what I know I can do as a solution: > I am able to reference a "java.util.Properties" service in one bundle when I > inject it as a property on a bean such as a class that extends RouteBuilder > in another bundle. This is perfectly viable, just not as elegant as I'd > like. > > Here's what I think I should be able to do as a solution: > It appears I should be able to reference the service since it represents a > java.util.Properties object through the property placeholder thereby using > only the replacement capabilities in Camel, such as {{event.endpoint}} > whether in Blueprint DSL or in Java. Ultimately I'm trying not to have to > have some Java code to access shared properties. > > I've actually tried a few permutations of the following xml snippets but > this demonstrates exactly what I'm trying to accomplish. After these > snippets I've posted some of the stack trace from karaf. I'm a little > confused why it's throwing a FileNotFoundException. I guess a subordinate > question is, does there need to be a concrete properties file somewhere or > do I possibly lack the setup of a proper Registry (see > http://camel.apache.org/using-propertyplaceholder.html under Using > Properties from the Registry section). If am missing something on the > registry maybe I need to do a little more reading on that subject. > > I'm using Karaf 2.2.5.fuse-70-097 and Camel 2.9.0.fuse-70-097 in FuseESB > 7.0.2.fuse-097 > > Here is the blueprint in the service bundle: > > <blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0"; > > xmlns:ext="http://aries.apache.org/blueprint/xmlns/blueprint-ext/v1.0.0"; > xmlns:blueprint="http://www.osgi.org/xmlns/blueprint/v1.0.0";> > > <service id="vmProperties" interface="java.util.Properties"> > <bean class="java.util.Properties"> > <argument> > <props> > <prop > key="event.endpoint">activemq:myapp.event.queue</prop> > <prop > key="command.endpoint">activemq:myapp.command.queue</prop> > </props> > </argument> > </bean> > </service> > </blueprint> > > Here is the blueprint for the camel route bundle: > > <blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0"; > > xmlns:cm="http://aries.apache.org/blueprint/xmlns/blueprint-cm/v1.0.0"; > > xmlns:ext="http://aries.apache.org/blueprint/xmlns/blueprint-ext/v1.0.0"; > xmlns:amq="http://activemq.apache.org/schema/core"; > xmlns:cml="http://camel.apache.org/schema/blueprint"; > xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; > xsi:schemaLocation="http://www.osgi.org/xmlns/blueprint/v1.0.0 > http://www.osgi.org/xmlns/blueprint/v1.0.0/blueprint.xsd > http://camel.apache.org/schema/blueprint/camel-blueprint-2.9.0.xsd";> > > <cml:camelContext id="test-camel-context" > > <cml:propertyPlaceholder location="ref:vmProperties" /> > <cml:route> > <cml:from uri="{{event.endpoint}}" /> > <cml:setBody> > <cml:constant>Hello Universe</cml:constant> > </cml:setBody> > <cml:log message="########## Sending Test Message" /> > <cml:to uri="{{command.endpoint}}" /> > </cml:route> > > <cml:route> > <cml:from uri="{{command.endpoint}}" /> > <cml:log message="########## Test Message Received" /> > </cml:route> > </cml:camelContext> > </blueprint> > > > Karaf log includes the following: > > 2013-02-05 10:40:12,455 | ERROR | l-0.0.0-thread-1 | BlueprintContainerImpl > | 10 - org.apache.aries.blueprint - 0.3.1.fuse-70-097 | Unable to start > blueprint container for bundle a-route.xml > org.osgi.service.blueprint.container.ComponentDefinitionException: Unable to > intialize bean test-camel-context > .... > Caused by: org.apache.camel.FailedToCreateRouteException: Failed to create > route route23: Route[[From[{{event.endpoint}}]] -> [SetBody[consta... > because of Failed to resolve endpoint: {{event.endpoint}} due to: Properties > vmProperties not found in registry > ... > Caused by: org.apache.camel.ResolveEndpointFailedException: Failed to > resolve endpoint: {{event.endpoint}} due to: Properties vmProperties not > found in registry > ... > Caused by: java.io.FileNotFoundException: Properties vmProperties not found > in registry > > > > > -- > View this message in context: > http://camel.465427.n5.nabble.com/Reference-OSGI-Blueprint-java-util-Properties-service-in-Blueprint-Camel-property-placeholder-tp5726985.html > Sent from the Camel - Users mailing list archive at Nabble.com > (http://Nabble.com).
