I'm a raw beginner with Camel.
I'm trying to work out an ssh query-response route using Camel. The java 8
code is very simply this:
package ...;
import org.apache.camel.CamelContext;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.impl.DefaultCamelContext;
public class CamelSshTest
{
public static void main(String[] args) throws Exception
{
CamelContext context = new DefaultCamelContext();
context.addRoutes(new RouteBuilder() {
public void configure() {
from("file:///.../commands?noop=true")
.to("ssh://user@host:22?certResource=file:///.../.ssh/id_rsa")
.to("file:///.../sshtest");
}
});
context.start();
Thread.sleep(10000);
context.stop();
}
}
The source directory holds one-liner files that contain simple shell
commands such as 'uptime'. The target system trusts my id_rsa key.
When I invoke this, I made sure to have the following jars in the class path:
camel-core-2.19.1.jar
camel-ssh-2.19.1.jar
slf4j-api-1.7.25.jar
slf4j-simple-1.7.25.jar
sshd-core-1.6.0.jar
(The slf4j jars are there to satisfy camel's hankering for
StaticLoggerBinder)
This yields this output:
[main] INFO org.apache.camel.impl.DefaultCamelContext - Apache Camel 2.19.1
(CamelContext: camel-1) is starting
[main] INFO org.apache.camel.management.ManagedManagementStrategy - JMX is
enabled
[main] INFO org.apache.camel.impl.converter.DefaultTypeConverter - Loaded 192
type converters
[main] INFO org.apache.camel.impl.DefaultRuntimeEndpointRegistry - Runtime
endpoint registry is in extended mode gathering usage statistics of all
incoming and outgoing endpoints (cache limit: 1000)
Exception in thread "main" java.lang.NoClassDefFoundError:
org/apache/sshd/common/KeyPairProvider
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
at java.lang.Class.getDeclaredMethods(Class.java:1975)
at
org.apache.camel.util.ReflectionHelper.doWithMethods(ReflectionHelper.java:96)
at
org.apache.camel.impl.DefaultCamelBeanPostProcessor.injectMethods(DefaultCamelBeanPostProcessor.java:216)
at
org.apache.camel.impl.DefaultCamelBeanPostProcessor.postProcessBeforeInitialization(DefaultCamelBeanPostProcessor.java:83)
at
org.apache.camel.impl.DefaultInjector.newInstance(DefaultInjector.java:48)
at
org.apache.camel.impl.DefaultComponentResolver.resolveComponent(DefaultComponentResolver.java:73)
at
org.apache.camel.impl.DefaultCamelContext.initComponent(DefaultCamelContext.java:497)
at
org.apache.camel.impl.DefaultCamelContext.lambda$getComponent$0(DefaultCamelContext.java:448)
at
java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1660)
at
org.apache.camel.impl.DefaultCamelContext.getComponent(DefaultCamelContext.java:448)
at
org.apache.camel.impl.DefaultCamelContext.getComponent(DefaultCamelContext.java:432)
at
org.apache.camel.impl.DefaultCamelContext.getEndpoint(DefaultCamelContext.java:666)
at
org.apache.camel.util.CamelContextHelper.getMandatoryEndpoint(CamelContextHelper.java:80)
at
org.apache.camel.model.RouteDefinition.resolveEndpoint(RouteDefinition.java:219)
at
org.apache.camel.impl.DefaultRouteContext.resolveEndpoint(DefaultRouteContext.java:112)
at
org.apache.camel.impl.DefaultRouteContext.resolveEndpoint(DefaultRouteContext.java:118)
at
org.apache.camel.model.SendDefinition.resolveEndpoint(SendDefinition.java:62)
at
org.apache.camel.model.SendDefinition.createProcessor(SendDefinition.java:56)
at
org.apache.camel.model.ProcessorDefinition.makeProcessorImpl(ProcessorDefinition.java:549)
at
org.apache.camel.model.ProcessorDefinition.makeProcessor(ProcessorDefinition.java:510)
at
org.apache.camel.model.ProcessorDefinition.addRoutes(ProcessorDefinition.java:226)
at
org.apache.camel.model.RouteDefinition.addRoutes(RouteDefinition.java:1295)
at
org.apache.camel.model.RouteDefinition.addRoutes(RouteDefinition.java:204)
at
org.apache.camel.impl.DefaultCamelContext.startRoute(DefaultCamelContext.java:1087)
at
org.apache.camel.impl.DefaultCamelContext.startRouteDefinitions(DefaultCamelContext.java:3544)
at
org.apache.camel.impl.DefaultCamelContext.doStartCamel(DefaultCamelContext.java:3275)
at
org.apache.camel.impl.DefaultCamelContext.access$000(DefaultCamelContext.java:202)
at
org.apache.camel.impl.DefaultCamelContext$2.call(DefaultCamelContext.java:3093)
at
org.apache.camel.impl.DefaultCamelContext$2.call(DefaultCamelContext.java:3089)
at
org.apache.camel.impl.DefaultCamelContext.doWithDefinedClassLoader(DefaultCamelContext.java:3112)
at
org.apache.camel.impl.DefaultCamelContext.doStart(DefaultCamelContext.java:3089)
at org.apache.camel.support.ServiceSupport.start(ServiceSupport.java:61)
at
org.apache.camel.impl.DefaultCamelContext.start(DefaultCamelContext.java:3026)
at
ca.gc.drdc_rddc.linux.utilinux.camel.CamelSshTest.main(CamelSshTest.java:34)
Caused by: java.lang.ClassNotFoundException:
org.apache.sshd.common.KeyPairProvider
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 36 more
Why is Camel looking for org.apache.sshd.common.KeyPairProvider? This used
to exist in sshd-core until 0.14.0, but the KeyPairProvider class moved to
org.apache.sshd.common.keyprovider.KeyPairProvider with version 1.0.0 and is
still there in the current version, 1.6.0.
Daniel U. Thibault, M.Sc.²
Informaticien scientifique, CME-PSC, Centre de recherches de Valcartier
Recherche et développement pour la défense Canada / Gouvernement du Canada
[email protected]<mailto:[email protected]> / Tél:
418-844-4000x4245 Téléc: 418-844-4538
[email protected]<mailto:[email protected]> / Tél:
418-844-4000x4245 Téléc: 418-844-4538
Computer Scientist, MCCS-SPC, Valcartier Research Centre
Defence Research and Development Canada / Government of Canada
[email protected]<mailto:[email protected]> / Tel:
418-844-4000x4245 Fax: 418-844-4538
[email protected]<mailto:[email protected]> / Tel:
418-844-4000x4245 Fax: 418-844-4538
DRDC is an agency of the Department of National Defence / RDDC est une agence
du ministère de la Défense nationale
