Laurent Chabot created CAMEL-14616:
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Summary: AttachmentConverter is not automatically discovered
Key: CAMEL-14616
URL: https://issues.apache.org/jira/browse/CAMEL-14616
Project: Camel
Issue Type: Bug
Components: camel-mail
Affects Versions: 3.0.1, 3.0.0, 3.1.0
Environment: Reproduced on Windows 7 and CentOS 6.10, with Oracle JDK
8, OpenJDK 8 and OpenJDK 11.
Reporter: Laurent Chabot
Fix For: Future
I have a very basic usage of camel-mail that's been working fine with Camel 2.x:
{code:java}
import java.io.IOException;
import org.apache.camel.CamelContext;
import org.apache.camel.ProducerTemplate;
import org.apache.camel.impl.DefaultCamelContext;
public class MailTest {
public static void main(String[] args) throws IOException {
try (CamelContext ctx = new DefaultCamelContext(); ProducerTemplate pt
= ctx.createProducerTemplate()) {
ctx.start();
pt.sendBody("smtp://localhost:25?to=me@mydomain", "Hello, World");
}
}
}
{code}
It is packaged as an executable jar using maven-assembly-plugin
jar-with-dependencies.
When I run it with Camel 3.x (tested with 3.0.0, 3.0.1 and 3.1.0), I get below
error:
{noformat}
Exception in thread "main" org.apache.camel.CamelExecutionException: Exception
occurred during execution on the exchange: Exchange[]
at
org.apache.camel.CamelExecutionException.wrapCamelExecutionException(CamelExecutionException.java:47)
at
org.apache.camel.support.ExchangeHelper.extractResultBody(ExchangeHelper.java:636)
at
org.apache.camel.impl.engine.DefaultProducerTemplate.extractResultBody(DefaultProducerTemplate.java:568)
at
org.apache.camel.impl.engine.DefaultProducerTemplate.extractResultBody(DefaultProducerTemplate.java:564)
at
org.apache.camel.impl.engine.DefaultProducerTemplate.sendBody(DefaultProducerTemplate.java:189)
at
org.apache.camel.impl.engine.DefaultProducerTemplate.sendBody(DefaultProducerTemplate.java:195)
at MailTest.main(MailTest.java:10)
Caused by: java.lang.NullPointerException
at
org.apache.camel.component.mail.MailBinding.populateMailMessage(MailBinding.java:133)
at
org.apache.camel.component.mail.MailProducer.process(MailProducer.java:61)
at
org.apache.camel.support.AsyncProcessorConverterHelper$ProcessorToAsyncProcessorBridge.process(AsyncProcessorConverterHelper.java:67)
at
org.apache.camel.processor.SharedCamelInternalProcessor.process(SharedCamelInternalProcessor.java:212)
at
org.apache.camel.processor.SharedCamelInternalProcessor$1.process(SharedCamelInternalProcessor.java:110)
at
org.apache.camel.impl.engine.DefaultAsyncProcessorAwaitManager.process(DefaultAsyncProcessorAwaitManager.java:84)
at
org.apache.camel.processor.SharedCamelInternalProcessor.process(SharedCamelInternalProcessor.java:107)
at
org.apache.camel.impl.engine.DefaultProducerCache.send(DefaultProducerCache.java:185)
at
org.apache.camel.impl.engine.DefaultProducerTemplate.send(DefaultProducerTemplate.java:176)
at
org.apache.camel.impl.engine.DefaultProducerTemplate.send(DefaultProducerTemplate.java:172)
at
org.apache.camel.impl.engine.DefaultProducerTemplate.send(DefaultProducerTemplate.java:153)
at
org.apache.camel.impl.engine.DefaultProducerTemplate.sendBody(DefaultProducerTemplate.java:187)
... 2 more
{noformat}
Conversion of the in message to AttachmentMessage appears to be failing.
When I checked file _META-INF/services/org/apache/camel/TypeConverterLoader_ in
my assembled jar, it was missing the
"org.apache.camel.attachment.AttachmentConverterLoader" entry.
If I now add the following line after starting the Camel context:
{code:java}
new AttachmentConverterLoader().load(ctx.getTypeConverterRegistry());
{code}
then mail sending is working fine again.
Am I doing smth wrong or is this a Camel 3.x bug?
Possible link with CAMEL-13677?
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