How to pass value from rest service to camel route? - rest

Question

I have exposed as service as below
restConfiguration().component("servlet").bindingMode(RestBindingMode.json);
rest("/batchFile").consumes("application/json").post("/routeStart").type(BatchFileRouteConfig.class).to("startRouteProcessor");
Based upon the request from rest service,i would start camel route in processor as below
#Component("startRouteProcessor")
public class StartRouteProcessor implements Processor {
public void process(Exchange exchange) throws Exception {
BatchFileRouteConfig config = exchange.getIn().getBody(BatchFileRouteConfig.class);
String routeId = config.getRouteId();
String sourceLocation = config.getSourceLocation();
exchange.getContext().startRoute(routeId);
}
}
I need to pass the sourceLocation from above bean to below route
#Component
public class FileReaderRoute extends RouteBuilder {
#Override
public void configure() throws Exception {
from("file:sourceLocation")
.log("File Reader Route route started");
}
}
Above is sample code..request you to help me in passing the sourcelocation from StartRouteProcessor to FileReaderRoute

Answer 1

This is not possible, since in your example is FileReaderRoute already started at the time of calling batchFile endpoint.
You can do it in slightly different way.
Extract your FileReaderRoute to direct. Something like:
#Component
public class FileReaderRoute extends RouteBuilder {
#Override
public void configure() throws Exception {
from("direct:fileReaderCommon")
.log("File Reader Route route started");
}
}
And then you can create new route at runtime:
#Component("startRouteProcessor")
public class StartRouteProcessor implements Processor {
public void process(Exchange exchange) throws Exception {
BatchFileRouteConfig config = exchange.getIn().getBody(BatchFileRouteConfig.class);
exchange.getContext().addRoutes(new RouteBuilder() {
#Override
public void configure() throws Exception {
from("file:"+config.getSourceLocation())
.routeId(config.getRouteId())
.to("direct:fileReaderCommon");
}
});
}
}
Do not forget to take sufficient sanitizing of input, since you are allowing user to create file consumer based on user input. In your approach, there is a high risk of path traversal attack.