SpringXD - Error in Gemfire as sink - spring

Question

I am trying to setup a stream in springXD.
gemfire is installed in 10.99.40.60 machine and springXD is installed in my LOCAL VM.
xd:>stream create --name gemfiredemo --definition "http --port=9090 | gemfire-server --host=10.99.40.60--port=10334 --useLocator=true
--regionName=region --keyExpression=payload.getField('symbol')" --deploy
Created and deployed new stream 'gemfiredemo'
I am running spring XD in my local VM machine...
While posting any data from VM:
xd:>http post --target http://localhost:9090 --data {"symbol":"ORCL","price":38}
> POST (text/plain;Charset=UTF-8) http://localhost:9090 {"symbol":"ORCL","price":38}
> 500 INTERNAL_SERVER_ERROR
> 500 INTERNAL_SERVER_ERROR
Error sending data '{"symbol":"ORCL","price":38}' to 'http://localhost:9090'
The actual error log shows:
[info 2015/12/07 09:27:49.633 UTC <poolTimer-client-pool-88> tid=0x13e] Unable to prefill pool to minimum because: com.gemstone.gemfire.cache.client.NoAvailableLocatorsException: Unable to connect to any locators in the list [machine60:10334, 10.99.40.60/10.99.40.60:10334]
[info 2015/12/07 09:27:49.644 UTC <poolTimer-client-pool-118> tid=0x13f] Unable to prefill pool to minimum because: com.gemstone.gemfire.cache.client.NoAvailableLocatorsException: Unable to connect to any locators in the list [liacm218:10334, 10.99.40.60/10.99.40.60:10334]
2015-12-07 09:27:53,427 1.1.2.RELEASE ERROR pool-14-thread-26 http.NettyHttpInboundChannelAdapter - Error sending message
org.springframework.messaging.MessageHandlingException: error occurred in message handler [org.springframework.integration.gemfire.outbound.CacheWritingMessageHandler#0]; nested exception is org.springframework.expression.spel.SpelEvaluationException: EL1004E:(pos 8): Method call: Method getField(java.lang.String) cannot be found on java.lang.String type
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:84)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.integration.monitor.SimpleMessageHandlerMetrics.handleMessage(SimpleMessageHandlerMetrics.java:107)
at org.springframework.integration.monitor.SimpleMessageHandlerMetrics.invoke(SimpleMessageHandlerMetrics.java:87)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207)
at com.sun.proxy.$Proxy129.handleMessage(Unknown Source)
at org.springframework.integration.dispatcher.AbstractDispatcher.tryOptimizedDispatch(AbstractDispatcher.java:116)
at org.springframework.integration.dispatcher.UnicastingDispatcher.doDispatch(UnicastingDispatcher.java:101)
at org.springframework.integration.dispatcher.UnicastingDispatcher.dispatch(UnicastingDispatcher.java:97)
at org.springframework.integration.channel.AbstractSubscribableChannel.doSend(AbstractSubscribableChannel.java:77)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:277)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:239)
at sun.reflect.GeneratedMethodAccessor75.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.integration.monitor.DirectChannelMetrics.monitorSend(DirectChannelMetrics.java:114)
at org.springframework.integration.monitor.DirectChannelMetrics.doInvoke(DirectChannelMetrics.java:98)
at org.springframework.integration.monitor.DirectChannelMetrics.invoke(DirectChannelMetrics.java:92)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207)
at com.sun.proxy.$Proxy127.send(Unknown Source)
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:115)
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:45)
at org.springframework.messaging.core.AbstractMessageSendingTemplate.send(AbstractMessageSendingTemplate.java:95)
at org.springframework.integration.handler.AbstractMessageProducingHandler.sendOutput(AbstractMessageProducingHandler.java:248)
at org.springframework.integration.handler.AbstractMessageProducingHandler.produceOutput(AbstractMessageProducingHandler.java:171)
at org.springframework.integration.handler.AbstractMessageProducingHandler.sendOutputs(AbstractMessageProducingHandler.java:119)
at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleMessageInternal(AbstractReplyProducingMessageHandler.java:105)
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:78)
at org.springframework.integration.dispatcher.AbstractDispatcher.tryOptimizedDispatch(AbstractDispatcher.java:116)
at org.springframework.integration.dispatcher.UnicastingDispatcher.doDispatch(UnicastingDispatcher.java:101)
at org.springframework.integration.dispatcher.UnicastingDispatcher.dispatch(UnicastingDispatcher.java:97)
at org.springframework.integration.channel.AbstractSubscribableChannel.doSend(AbstractSubscribableChannel.java:77)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:277)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:239)
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:115)
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:45)
at org.springframework.messaging.core.AbstractMessageSendingTemplate.send(AbstractMessageSendingTemplate.java:95)
at org.springframework.integration.handler.AbstractMessageProducingHandler.sendOutput(AbstractMessageProducingHandler.java:248)
at org.springframework.integration.handler.AbstractMessageProducingHandler.produceOutput(AbstractMessageProducingHandler.java:171)
at org.springframework.integration.handler.AbstractMessageProducingHandler.sendOutputs(AbstractMessageProducingHandler.java:119)
at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleMessageInternal(AbstractReplyProducingMessageHandler.java:105)
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:78)
at org.springframework.integration.dispatcher.AbstractDispatcher.tryOptimizedDispatch(AbstractDispatcher.java:116)
at org.springframework.integration.dispatcher.UnicastingDispatcher.doDispatch(UnicastingDispatcher.java:101)
at org.springframework.integration.dispatcher.UnicastingDispatcher.dispatch(UnicastingDispatcher.java:97)
at org.springframework.integration.channel.AbstractSubscribableChannel.doSend(AbstractSubscribableChannel.java:77)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:277)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:239)
at sun.reflect.GeneratedMethodAccessor75.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.integration.monitor.DirectChannelMetrics.monitorSend(DirectChannelMetrics.java:114)
at org.springframework.integration.monitor.DirectChannelMetrics.doInvoke(DirectChannelMetrics.java:98)
at org.springframework.integration.monitor.DirectChannelMetrics.invoke(DirectChannelMetrics.java:92)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207)
at com.sun.proxy.$Proxy130.send(Unknown Source)
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:115)
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:45)
at org.springframework.messaging.core.AbstractMessageSendingTemplate.send(AbstractMessageSendingTemplate.java:95)
at org.springframework.integration.endpoint.MessageProducerSupport.sendMessage(MessageProducerSupport.java:101)
at org.springframework.integration.x.http.NettyHttpInboundChannelAdapter.access$800(NettyHttpInboundChannelAdapter.java:86)
at org.springframework.integration.x.http.NettyHttpInboundChannelAdapter$Handler.messageReceived(NettyHttpInboundChannelAdapter.java:319)
at org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70)
at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)
at org.jboss.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)
at org.jboss.netty.handler.execution.ChannelUpstreamEventRunnable.doRun(ChannelUpstreamEventRunnable.java:43)
at org.jboss.netty.handler.execution.ChannelEventRunnable.run(ChannelEventRunnable.java:67)
at org.jboss.netty.handler.execution.OrderedMemoryAwareThreadPoolExecutor$ChildExecutor.run(OrderedMemoryAwareThreadPoolExecutor.java:314)
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)
Caused by: org.springframework.expression.spel.SpelEvaluationException: EL1004E:(pos 8): Method call: Method getField(java.lang.String) cannot be found on java.lang.String type
at org.springframework.expression.spel.ast.MethodReference.findAccessorForMethod(MethodReference.java:211)
at org.springframework.expression.spel.ast.MethodReference.getValueInternal(MethodReference.java:125)
at org.springframework.expression.spel.ast.MethodReference.access$000(MethodReference.java:49)
at org.springframework.expression.spel.ast.MethodReference$MethodValueRef.getValue(MethodReference.java:342)
at org.springframework.expression.spel.ast.CompoundExpression.getValueInternal(CompoundExpression.java:88)
at org.springframework.expression.spel.ast.SpelNodeImpl.getValue(SpelNodeImpl.java:120)
at org.springframework.expression.spel.standard.SpelExpression.getValue(SpelExpression.java:153)
at org.springframework.integration.gemfire.outbound.CacheWritingMessageHandler.parseCacheEntries(CacheWritingMessageHandler.java:93)
at org.springframework.integration.gemfire.outbound.CacheWritingMessageHandler.handleMessageInternal(CacheWritingMessageHandler.java:66)

Answer 1

I am not sure what payload type you are expecting for this...
--keyExpression=payload.getField('symbol')
but, if you add
--inputType='application/x-java-object;type=java.util.HashMap'
to your sink definition and add
--contentType application/json
to your http post request, you can then use
--keyExpression=payload.symbol
The runtime will automatically convert the json to a map for you.