[CAMEL-13922] http4 does not recognize part of URI provided with header

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Invalid
• Affects Version/s: 2.24.1
• Component/s: camel-http4
• Estimated Complexity: Unknown
• Assignee: Unassigned
• Reporter: Vyacheslav Boyko
• Created: 01/Sep/19 19:48
• Updated: 10/Nov/19 20:00
• Resolved: 01/Sep/19 20:37

Description

I'm trying to describe a route with Enrich EIP. It should be done as:

1) template producer gives an year (2019, 2012 etc), set it in header and push the message into route

2) from that endpoint message should be enriched from URI composed by template:

from("seda:calendar-update-process")
        .setHeader("calendar-uri", simple("xmlcalendar.ru/data/ru/${header["+HEADER_YEAR+"]}/calendar.xml"))
        .log(LoggingLevel.WARN, log, "Updating calendar from url: ${header.calendar-uri}")
        .enrich("http4:$\\{header.calendar-uri\\}", (oldExchange, newExchange) -> {
            oldExchange.getIn().setBody(newExchange.getIn().getBody());
            return oldExchange;
        })

as described on https://camel.apache.org/manual/latest/content-enricher.html in part named 'Using dynamic uris'

 

But it cannot parse that expression. I get an error:

 

org.apache.camel.ResolveEndpointFailedException: Failed to resolve endpoint: http4://$%5C%7Bheader.calendar-uri%5C%7D due to: Expected scheme-specific part at index 6: http4:
	at org.apache.camel.impl.DefaultCamelContext.getEndpoint(DefaultCamelContext.java:753)
	at org.apache.camel.util.CamelContextHelper.getMandatoryEndpoint(CamelContextHelper.java:80)
	at org.apache.camel.util.ExchangeHelper.resolveEndpoint(ExchangeHelper.java:91)
	at org.apache.camel.processor.Enricher.resolveEndpoint(Enricher.java:299)
	at org.apache.camel.processor.Enricher.process(Enricher.java:165)
	at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:548)
	at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:201)
	at org.apache.camel.processor.Pipeline.process(Pipeline.java:138)
	at org.apache.camel.processor.Pipeline.process(Pipeline.java:101)
	at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:201)
	at org.apache.camel.component.seda.SedaConsumer.sendToConsumers(SedaConsumer.java:298)
	at org.apache.camel.component.seda.SedaConsumer.doRun(SedaConsumer.java:210)
	at org.apache.camel.component.seda.SedaConsumer.run(SedaConsumer.java:155)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.net.URISyntaxException: Expected scheme-specific part at index 6: http4:
	at java.net.URI$Parser.fail(URI.java:2848)
	at java.net.URI$Parser.failExpecting(URI.java:2854)
	at java.net.URI$Parser.parse(URI.java:3057)
	at java.net.URI.<init>(URI.java:673)
	at org.apache.camel.component.http4.HttpComponent.createEndpoint(HttpComponent.java:269)
	at org.apache.camel.impl.DefaultComponent.createEndpoint(DefaultComponent.java:130)
	at org.apache.camel.impl.DefaultCamelContext.getEndpoint(DefaultCamelContext.java:706)
	... 15 common frames omitted