在蓝图声明中找不到“camel blueprint”命名空间（Felix中的Aries）

Question

我正在尝试运行一个独立的OSGi框架来运行其中的blueprint捆绑包，以执行驼峰路由。OSGi框架是Apache Felix，蓝图实现是Apache Aries。

以下捆绑包加载到框架的BundleContext：

现在，我有一个测试包，它有一个蓝图定义，其中包含一个如下所示的camelContext：

<?xml version="1.0" encoding="UTF-8"?>
<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="
       http://www.osgi.org/xmlns/blueprint/v1.0.0 http://www.osgi.org/xmlns/blueprint/v1.0.0/blueprint.xsd
       http://camel.apache.org/schema/blueprint http://camel.apache.org/schema/blueprint/camel-blueprint.xsd">

    <camelContext xmlns="http://camel.apache.org/schema/blueprint">
        <route id="testRoute1">
            <from uri="timer:foo?period=5000" />
            <log message="Hello world!" />
        </route>
    </camelContext>

</blueprint>

即使加载了所有捆绑包并解决了需求，蓝图容器也会给出以下日志：

[de.hff.yosgi.test1.Test] : Installing test bundle
[org.apache.aries.blueprint.container.BlueprintExtender] : Starting BlueprintContainer destruction process for bundle osgi-test1
[org.apache.aries.blueprint.container.BlueprintExtender] : Not a blueprint bundle or destruction of BlueprintContainer already finished for osgi-test1.
[org.apache.aries.blueprint.container.BlueprintExtender] : Starting BlueprintContainer destruction process for bundle osgi-test1
[org.apache.aries.blueprint.container.BlueprintExtender] : Not a blueprint bundle or destruction of BlueprintContainer already finished for osgi-test1.
[de.hff.yosgi.test1.Test] : Test bundle installed, starting
[org.apache.aries.blueprint.container.BlueprintExtender] : Starting BlueprintContainer destruction process for bundle osgi-test1
[org.apache.aries.blueprint.container.BlueprintExtender] : Not a blueprint bundle or destruction of BlueprintContainer already finished for osgi-test1.
[org.apache.aries.blueprint.container.BlueprintExtender] : Starting BlueprintContainer destruction process for bundle osgi-test1
[org.apache.aries.blueprint.container.BlueprintExtender] : Not a blueprint bundle or destruction of BlueprintContainer already finished for osgi-test1.
[org.apache.aries.blueprint.container.BlueprintExtender] : Scanning bundle osgi-test1 for blueprint application
[org.apache.aries.blueprint.container.BlueprintExtender] : Found blueprint application in bundle osgi-test1 with paths: [bundle://24.0:0/OSGI-INF/blueprint/blueprint.xml]
[org.apache.aries.blueprint.container.BlueprintExtender] : Scheduling creation of blueprint bundle osgi-test1 asynchronously
[org.apache.aries.blueprint.container.BlueprintContainerImpl] : Running blueprint container for bundle osgi-test1 in state Unknown
[org.apache.aries.blueprint.container.BlueprintEventDispatcher] : Sending blueprint container event BlueprintEvent[type=CREATING] for bundle osgi-test1
[de.hff.yosgi.test1.Test] : Test bundle started
[org.apache.aries.blueprint.container.BlueprintContainerImpl] : Running blueprint container for bundle osgi-test1 in state WaitForNamespaceHandlers
[org.apache.aries.blueprint.container.BlueprintContainerImpl] : Bundle osgi-test1 is waiting for namespace handlers [http://camel.apache.org/schema/blueprint]
[org.apache.aries.blueprint.container.BlueprintEventDispatcher] : Sending blueprint container event BlueprintEvent[type=GRACE_PERIOD, dependencies=[(&(objectClass=org.apache.aries.blueprint.NamespaceHandler)(osgi.service.blueprint.namespace=http://camel.apache.org/schema/blueprint))]] for bundle osgi-test1

这里的重要行是等待命名空间处理程序：测试包找不到骆驼蓝图命名空间。但是这个命名空间应该在安装的骆驼蓝图包中定义。

如果蓝图中没有camelContext，一切都可以正常工作（蓝图服务被加载和初始化）。

有人有过类似的问题吗？是什么阻止了测试包访问camel blueprint提供的名称空间？

Answer 1

我们通过清理依赖项修复了此问题。实际上只需要以下内容：

此外，要成功地让Camel在Aries Blueprint中运行，实例化框架时需要一个附加参数。这允许捆绑包访问sun.*包。

Iterator<FrameworkFactory> iterator = 
        ServiceLoader.load(FrameworkFactory.class).iterator();
FrameworkFactory factory = iterator.next();

Map<> configuration = new HashMap<String, String>();
configuration.put("org.osgi.framework.bootdelegation", "sun.*");
this.framework = factory.newFramework(configuration);