Hello everybody!
In a highly integration based project we would like to use the camel exec://
component. My first tests however let me ask why some executables that must
be in the system path by default are not found with exec://. Please see the
following example:
public class TestCamelExecSpike extends CamelTestSupport {
private static final Logger logger =
LoggerFactory.getLogger(TestCamelExecSpike.class);
private static final String echoExecutable = "echo";
private static final String echoParam = "Hello world";
@Override
protected RouteBuilder createRouteBuilder() throws Exception {
return new RouteBuilder() {
@Override
public void configure() throws Exception {
from("direct:startExec").to("exec:" +
echoExecutable + "?args=" +
echoParam).to(
"mock:result");
}
};
}
@Test
public void testCamelExec() throws Exception {
MockEndpoint mockEndpoint = getMockEndpoint("mock:result");
mockEndpoint.expectedMessageCount(1);
template.sendBody("direct:startExec", null);
mockEndpoint.assertIsSatisfied();
List<Exchange> exchanges = mockEndpoint.getExchanges();
String stdout = exchanges.get(0).getIn().getBody(String.class);
logger.info(stdout);
assertEquals("Hello world", stdout);
}
}
When I execute the test I encounter the following error:
org.apache.camel.CamelExecutionException: Exception occurred during
execution on the exchange: Exchange[Message: [Body is null]]
at
org.apache.camel.util.ObjectHelper.wrapCamelExecutionException(ObjectHelper.java:1296)
at
org.apache.camel.util.ExchangeHelper.extractResultBody(ExchangeHelper.java:618)
at
org.apache.camel.impl.DefaultProducerTemplate.extractResultBody(DefaultProducerTemplate.java:442)
Caused by: org.apache.camel.component.exec.ExecException: *Unable to execute
command ExecCommand [args=[Hello, world], executable=echo,
timeout=9223372036854775807, outFile=null, workingDir=null,
useStderrOnEmptyStdout=false]*
at
org.apache.camel.component.exec.impl.DefaultExecCommandExecutor.execute(DefaultExecCommandExecutor.java:81)
at
org.apache.camel.component.exec.ExecProducer.process(ExecProducer.java:46)
at
org.apache.camel.util.AsyncProcessorConverterHelper$ProcessorToAsyncProcessorBridge.process(AsyncProcessorConverterHelper.java:61)
Actually the command /echo/ should be found but it wasn't. Can someone
please explain me how the system path can be set properly to avoid setting
the whole path for the executables?
Thanks
Hilde
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