As a note:
When when using the routeConfiguration from Java and load it:
public class MyJavaErrorHandler extends RouteConfigurationBuilder {
@Override
public void configuration() throws Exception {
routeConfiguration("xmlError")
.onException(Exception.class).handled(true)
.log("Java WARN: ${exception.message}");
}
}
context.addRoutes(new MyJavaErrorHandler());
then it works as expected. Thus, it must be because of the way the
routeconfiguration was loaded. I loaded it using:
loader.updateRoutes(resource);
I assumed it worked similar to the old "addOrUpdateXml" method as it says
"Loads or updates existing RoutesBuilder". However it works differently (at
least for RouteConfiguration). When changing the
routeConfiguration to:
loader.loadRoutes(resource);
then it worked.
Raymond
On Mon, Apr 11, 2022 at 9:13 PM ski n <[email protected]> wrote:
> Yes, with the try-catch-finally clause one can have more fine-grained.
> However, I am not the one who writes the routes. I am only loading them.
> That's why I need a more generic behavior (errorHandler) with some
> configuration options (routeConfiguration).
>
> I assumed that the XML routeConfiguration can be loaded the same as a
> 'normal' xml route. I loaded the following:
>
> <routeConfiguration id="xmlError">
> <onException>
> <exception>java.lang.Exception</exception>
> <handled><constant>true</constant></handled>
> <log message="XML WARN: ${exception.message}"/>
> </onException></routeConfiguration>
>
> And then the route:
>
> <route routeConfigurationId="xmlError">
> <from uri="timer:xml?period=5s"/>
> <log message="I am XML"/>
> <throwException exceptionType="java.lang.Exception" message="Some kind of
> XML error"/></route>
>
>
> I see the error thrown "Some kind of XML error", but I don't see it
> handled (for example the XML WARN message). Is there something that I am
> missing?
>
> Raymond
>
>
>
>
>
> On Mon, Apr 11, 2022 at 6:06 PM Chirag <[email protected]> wrote:
>
>> You could wrap it using try/catch.
>>
>> See: https://camel.apache.org/manual/try-catch-finally.html
>>
>> My experience with it is - it depends on the endpoint involved to
>> throw exceptions and enter doCatch appropriately.
>>
>> ચિરાગ/चिराग/Chirag
>> ------------------------------------------
>> Sent from My Gmail Account
>>
>> On Mon, Apr 11, 2022 at 11:10 AM Claus Ibsen <[email protected]>
>> wrote:
>> >
>> > Hi
>> >
>> > See routes configuration
>> > https://camel.apache.org/manual/route-configuration.html
>> >
>> > On Mon, Apr 11, 2022 at 4:30 PM ski n <[email protected]> wrote:
>> > >
>> > > I am indeed using Camel 3 (Currently 3.14.2) and using Maven. I just
>> use
>> > > plain Java (camel core), so I have a similar setup as your example
>> (only
>> > > I'm using Java, instead of the application.properties to configure the
>> > > Camel context and its routes). Your example helped me to also use the
>> Yaml
>> > > dsl.
>> > >
>> > > I am still wondering how to do proper errorHandling/onException with
>> the
>> > > routesloader.
>> > >
>> > > I can set for example the errorHandler globally:
>> > >
>> > > extendedCamelContext.setErrorHandlerFactory(routeErrorHandler);
>> > >
>> > > But I rather set it per route / per exception (and best of all from
>> the
>> > > xml/yaml files). Like it used to be done like this:
>> > >
>> > > <camelContext id="myCamelContext" xmlns="
>> > > http://camel.apache.org/schema/spring";>
>> > > <!-- Catch the authorization exception and set the Access Denied
>> > > message back -->
>> > > <onException>
>> > >
>> <exception>org.apache.camel.CamelAuthorizationException</exception>
>> > > <handled>
>> > > <constant>true</constant>
>> > > </handled>
>> > > <transform>
>> > > <simple>Access Denied with the Policy of ${exception.policyId}
>> > > !</simple>
>> > > </transform>
>> > > </onException>
>> > >
>> > > <route>
>> > > <from uri="servlet:user"/>
>> > > <!-- wrap the route in the policy which enforces security check
>> -->
>> > > <policy ref="user">
>> > > <transform>
>> > > <simple>Normal user can access this service</simple>
>> > > </transform>
>> > > </policy>
>> > > </route>
>> > >
>> > > <route>
>> > > <from uri="servlet:admin"/>
>> > > <!-- wrap the route in the policy which enforces security check
>> -->
>> > > <policy ref="admin">
>> > > <transform>
>> > > <simple>Call the admin operation OK</simple>
>> > > </transform>
>> > > </policy>
>> > > </route>
>> > >
>> > > </camelContext>
>> > >
>> > > But such files are not accepted by the routesLoader.
>> > >
>> > > I also tried setting the error handler on a specific route from Java
>> like
>> > > this:
>> > >
>> > > Route route = context.getRoute(myRouteId);
>> > > route.setErrorHandlerFactory(routeErrorHandler);
>> > >
>> > > But that didn't change anything.
>> > >
>> > > Raymond
>> > >
>> > >
>> > >
>> > >
>> > >
>> > >
>> > >
>> > > On Mon, Apr 11, 2022 at 3:36 PM Chirag <[email protected]>
>> wrote:
>> > >
>> > > > Hello Raymond,
>> > > >
>> > > > Are you trying to use Camel 3 ?
>> > > > Would you use Maven or Gradle to build?
>> > > >
>> > > > Here is an example:
>> > > >
>> https://github.com/chiragsanghavi/camel-experiments/tree/main/processor
>> > > > if this helps.
>> > > >
>> > > > This example was built to demonstrate a bug- but if you update maven
>> > > > to use camel 3.1.5 - it should work.
>> > > > Only thing needed to support YAML is a change in pom.xml to include
>> > > > yaml dsl and create yaml files and put them into "routes" folder.
>> > > >
>> > > > <dependency>
>> > > > <groupId>org.apache.camel</groupId>
>> > > > <artifactId>camel-yaml-dsl</artifactId>
>> > > > </dependency>
>> > > >
>> > > >
>> > > >
>> > > > ચિરાગ/चिराग/Chirag
>> > > > ------------------------------------------
>> > > > Sent from My Gmail Account
>> > > >
>> > > > On Mon, Apr 11, 2022 at 6:15 AM ski n <[email protected]>
>> wrote:
>> > > > >
>> > > > > Hi All,
>> > > > >
>> > > > > I like to use the routesLoader (
>> > > > >
>> > > >
>> https://javadoc.io/static/org.apache.camel/camel-api/3.16.0/org/apache/camel/spi/annotations/RoutesLoader.html
>> > > > > ).
>> > > > > I have some questions about how to properly use it.
>> > > > >
>> > > > > 1) Is there any documentation on how to use it? (At
>> > > > > https://camel.apache.org/manual/ or
>> > > > > https://camel.apache.org/components/next/index.html).
>> > > > >
>> > > > > 2) I could find some examples (
>> https://github.com/apache/camel-examples
>> > > > ),
>> > > > > there the routesloader example says:
>> > > > >
>> > > > > <!--
>> > > > > if you want to have multiple routes, you can either have
>> multiple
>> > > > files
>> > > > > with 1 <route> per file or
>> > > > > you can use <routes> as root tag, such as
>> > > > > <routes><route>...</route><route>...</route></routes>
>> > > > > -->
>> > > > >
>> > > > > <route>
>> > > > > <from uri="timer:xml?period=5s"/>
>> > > > > <log message="I am XML"/>
>> > > > > </route>
>> > > > >
>> > > > > These examples loads xml, can it also loads other DSL's? (Like
>> yaml or
>> > > > > Java).
>> > > > >
>> > > > > 3) How to use OnException with the RouteLoader?
>> > > > >
>> > > > > I thought maybe like this
>> > > > >
>> > > > > <routes xmlns="http://camel.apache.org/schema/spring";>
>> > > > > <onException>
>> > > > > <exception>java.lang.Exception</exception>
>> > > > > <redeliveryPolicy maximumRedeliveries="0"
>> redeliveryDelay="5000"/>
>> > > > > <handled><constant>true</constant></handled>
>> > > > > <toD uri="file://some/directory"/>
>> > > > > </onException>
>> > > > > <route>
>> > > > > <from uri="timer:xml?period=5s"/>
>> > > > > <log message="I am XML"/>
>> > > > > </route>
>> > > > > </routes>
>> > > > >
>> > > > > But this gave me a nullpointer exception.
>> > > > >
>> > > > > 4) Load from string directly
>> > > > >
>> > > > > In Camel 2 you could load routes directly from string like this:
>> > > > >
>> > > > > ManagedCamelContext managed =
>> > > > > context.getExtension(ManagedCamelContext.class);
>> > > > > managedContext = managed.getManagedCamelContext();
>> > > > > managedContext.addOrUpdateRoutesFromXml(routeAsString);
>> > > > >
>> > > > > In Camel 3 the "addOrUpdateRoutesFromXml" is depracated. With
>> routeLoader
>> > > > > from string I do it like this:
>> > > > >
>> > > > > ExtendedCamelContext extendedCamelContext =
>> > > > > context.adapt(ExtendedCamelContext.class);
>> > > > > RoutesLoader loader = extendedCamelContext.getRoutesLoader();
>> > > > > Resource resource = ResourceHelper.fromString("any.xml", route);
>> > > > >
>> > > > > loader.updateRoutes(resource);
>> > > > >
>> > > > > Is this the only way in Camel 3, or is there also a specific
>> method to
>> > > > use
>> > > > > strings directly (and maybe only specify the DSL used) like:
>> > > > >
>> > > > > loader.updateRoutes(routeAsString, "xml");
>> > > > >
>> > > > >
>> > > > > Raymond
>> > > >
>> >
>> >
>> >
>> > --
>> > Claus Ibsen
>> > -----------------
>> > http://davsclaus.com @davsclaus
>> > Camel in Action 2: https://www.manning.com/ibsen2
>>
>
