WSO2 DAS + 使用 mysql 的集群 APIM

Question

1. 我的 APIM 版本是 1.10.0，DAS 是 3.0.1。

2. 起初，我没有使用 mysql 部署 Clustering APIM + DAS。统计数据显示良好。

3. 然后，我将APIM集群成发布者、存储、密钥管理器和网关。配置APIM和DAS命令this article，当我调用一个api时，网关节点显示错误

[2016-10-13 11:13:54,775] ERROR - APIMgtUsageHandler Cannot publish event. null
java.lang.NullPointerException
        at org.wso2.carbon.apimgt.usage.publisher.APIMgtUsageDataBridgeDataPublisher.publishEvent(APIMgtUsageDataBridgeDataPublisher.java:124)
        at org.wso2.carbon.apimgt.usage.publisher.APIMgtUsageHandler.handleRequest(APIMgtUsageHandler.java:169)
        at org.apache.synapse.rest.API.process(API.java:322)
        at org.apache.synapse.rest.RESTRequestHandler.dispatchToAPI(RESTRequestHandler.java:86)
        at org.apache.synapse.rest.RESTRequestHandler.process(RESTRequestHandler.java:65)
        at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:295)
        at org.apache.synapse.core.axis2.SynapseMessageReceiver.receive(SynapseMessageReceiver.java:83)
        at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180)
        at org.apache.synapse.transport.passthru.ServerWorker.processNonEntityEnclosingRESTHandler(ServerWorker.java:317)
        at org.apache.synapse.transport.passthru.ServerWorker.run(ServerWorker.java:149)
        at org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:172)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:745)
[2016-10-13 11:13:54,807] ERROR - APIMgtResponseHandler Cannot publish response event. null
java.lang.NullPointerException
        at org.wso2.carbon.apimgt.usage.publisher.APIMgtUsageDataBridgeDataPublisher.publishEvent(APIMgtUsageDataBridgeDataPublisher.java:140)
        at org.wso2.carbon.apimgt.usage.publisher.APIMgtResponseHandler.mediate(APIMgtResponseHandler.java:211)
        at org.apache.synapse.mediators.ext.ClassMediator.mediate(ClassMediator.java:84)
        at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:81)
        at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:48)
        at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:155)
        at org.apache.synapse.rest.Resource.process(Resource.java:297)
        at org.apache.synapse.rest.API.process(API.java:335)
        at org.apache.synapse.rest.RESTRequestHandler.dispatchToAPI(RESTRequestHandler.java:86)
        at org.apache.synapse.rest.RESTRequestHandler.process(RESTRequestHandler.java:52)
        at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:295)
        at org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:529)
        at org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:172)
        at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180)
        at org.apache.synapse.transport.passthru.ClientWorker.run(ClientWorker.java:251)
        at org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:172)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:745)

4. 然后我改变了DAS配置的方式。在this blog之后，我配置了所有的api-manager.xml，没有错误也没有stats。并存储节点显示信息：

[2016-10-18 11:31:39,131]  INFO - ReceiverGroup Resending the failed published data...
[2016-10-18 11:31:44,134]  WARN - AccessConfiguration Error loading properties from file: access-log.properties
[2016-10-18 11:31:44,207]  INFO - TimeoutHandler This engine will expire all callbacks after : 120 seconds, irrespective of the timeout

5. 我用谷歌搜索原因，在wso2 jira，他们说这不是错误。

但我无法等待数小时的统计数据。我是否配置有问题？

警戒。

Answer 1

似乎在商店节点中，数据发布已启用并正在工作。但是网关节点数据没有发布。请尝试验证网关节点配置。还要检查网关节点是否可以访问 DAS 节点。