You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@camel.apache.org by "Alex Soto (JIRA)" <ji...@apache.org> on 2018/02/23 19:34:00 UTC
[jira] [Created] (CAMEL-12291) Blueprint error: "name is already
instanciated as null and cannot be removed"
Alex Soto created CAMEL-12291:
---------------------------------
Summary: Blueprint error: "name is already instanciated as null and cannot be removed"
Key: CAMEL-12291
URL: https://issues.apache.org/jira/browse/CAMEL-12291
Project: Camel
Issue Type: Bug
Components: camel-blueprint
Affects Versions: 2.20.2
Environment: Mac OSX, {color:#000000}Karaf 4.2.5{color}
Reporter: Alex Soto
Assignee: Grzegorz Grzybek
The error "name is already instanciated (sic) as null and cannot be removed" is thrown when configuring a component in Blueprint using property placeholders.
I noticed when trying to migrate my project to Camel 2.20.2 (from 2.17.4)
Example:
{code:java}
<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:camel="http://camel.apache.org/schema/blueprint"
xmlns:cm="http://aries.apache.org/blueprint/xmlns/blueprint-cm/v1.1.0"
xmlns:ext="http://aries.apache.org/blueprint/xmlns/blueprint-ext/v1.0.0"
xsi:schemaLocation="
http://www.osgi.org/xmlns/blueprint/v1.0.0
https://www.osgi.org/xmlns/blueprint/v1.0.0/blueprint.xsd”>
<cm:property-placeholder
persistent-id="audit.log"
update-strategy="reload”
placeholder-prefix="#{" placeholder-suffix="}">
<cm:default-properties>
<cm:property name="audit-log.reaper.cron" value="0 0/30 * * * ?" />
<cm:property name="startDelaySeconds" value="600" />
</cm:default-properties>
</cm:property-placeholder>
<bean id="audit-log-reaper-quartz"
class="org.apache.camel.component.quartz2.QuartzComponent">
<property name="startDelayedSeconds" value="#{startDelaySeconds}" />
</bean>{code}
The bean is referenced in a Camel route:
{code:java}
<route id="reaper-scheduler">
<from uri="[audit-log-reaper-quartz://reaper?cron=\{{cron}}]" />
{code}
Throws exception:
{quote}org.osgi.service.blueprint.container.ComponentDefinitionException: Name audit-log-reaper-quartz is already +instanciated+ as null and cannot be removed.
at org.apache.aries.blueprint.container.BlueprintRepository.removeRecipe(BlueprintRepository.java:131) [38:org.apache.aries.blueprint.core:1.8.3]
at org.apache.aries.blueprint.container.BlueprintContainerImpl.updateUninstantiatedRecipes(BlueprintContainerImpl.java:572) [38:org.apache.aries.blueprint.core:1.8.3]
at org.apache.aries.blueprint.container.BlueprintContainerImpl.processProcessors(BlueprintContainerImpl.java:559) [38:org.apache.aries.blueprint.core:1.8.3]
at org.apache.aries.blueprint.container.BlueprintContainerImpl.doRun(BlueprintContainerImpl.java:394) [38:org.apache.aries.blueprint.core:1.8.3]
at org.apache.aries.blueprint.container.BlueprintContainerImpl.run(BlueprintContainerImpl.java:275) [38:org.apache.aries.blueprint.core:1.8.3]
{quote}
Removing the property placeholder fixes the issue:
{code:java}
<bean id="audit-log-reaper-quartz"
class="org.apache.camel.component.quartz2.QuartzComponent">
<property name="startDelayedSeconds" value="600" />
</bean>
{code}
According to Guillaume Nodet, this seems to have been introduced by this pull request:
[https://github.com/apache/camel/commit/a4e94f036d02943814c84195d73837cf607c8c20]
Solution proposed by Guillaume Nodet is to change line 106 of /camel-blueprint/src/main/java/org/apache/camel/blueprint/handler/CamelNamespaceHandler.java
to
{code:java}
if (camelContext.getComponent(component, false) == null) {
{code}
I tested this change locally and it seems to work, however I don't know if this can cause other problems.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)