Re: problem in collecting json with names starting with a number

That's a strange one. Can you provide more details, like your xml-datacollection config, and a sample json, as with that data you can create a junit test to debug this further.

Ron

From: onmstester onmstester [mailto:[email protected]]
Sent: Monday, January 29, 2018 10:50 PM
To: [email protected]
Subject: [opennms-discuss] problem in collecting json with names starting with a number

I've ran into a problem while trying to collect json metrics from elatstic API, it seems like that attribute having name starting with a numeric character cause commons-jxpath to throw exception:

org.opennms.netmgt.collection.api.CollectionException: Can't collect XML data because Invalid XPath: '1name'. Syntax error after: '1'
        at org.opennms.protocols.xml.collector.XmlCollector.collect(XmlCollector.java:170) ~[org.opennms.protocols.xml-16.0.0.jar:?]
        at org.opennms.netmgt.collectd.CollectionSpecification.collect(CollectionSpecification.java:274) ~[opennms-services-16.0.0.jar:?]
        at org.opennms.netmgt.collectd.CollectableService.doCollection(CollectableService.java:388) ~[opennms-services-16.0.0.jar:?]
        at org.opennms.netmgt.collectd.CollectableService.doRun(CollectableService.java:322) [opennms-services-16.0.0.jar:?]
        at org.opennms.netmgt.collectd.CollectableService.access$000(CollectableService.java:70) [opennms-services-16.0.0.jar:?]
        at org.opennms.netmgt.collectd.CollectableService$1.run(CollectableService.java:300) [opennms-services-16.0.0.jar:?]
        at org.opennms.core.logging.Logging.withPrefix(Logging.java:66) [org.opennms.core.logging-16.0.0.jar:?]
        at org.opennms.netmgt.collectd.CollectableService.run(CollectableService.java:296) [opennms-services-16.0.0.jar:?]
        at org.opennms.netmgt.scheduler.LegacyScheduler$1.run(LegacyScheduler.java:209) [opennms-services-16.0.0.jar:?]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [?:1.8.0_45]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [?:1.8.0_45]
        at org.opennms.core.concurrent.LogPreservingThreadFactory$3.run(LogPreservingThreadFactory.java:124) [opennms-util-16.0.0.jar:?]
        at java.lang.Thread.run(Thread.java:745) [?:1.8.0_45]
Caused by: org.opennms.netmgt.collection.api.CollectionException: Invalid XPath: '1name'. Syntax error after: '1'
        at org.opennms.protocols.xml.collector.AbstractXmlCollectionHandler.collect(AbstractXmlCollectionHandler.java:198) ~[org.opennms.protocols.xml-16.0.0.jar:?]
        at org.opennms.protocols.xml.collector.XmlCollector.collect(XmlCollector.java:168) ~[org.opennms.protocols.xml-16.0.0.jar:?]
        ... 12 more
Caused by: org.apache.commons.jxpath.JXPathInvalidSyntaxException: Invalid XPath: '1name'. Syntax error after: '1'
        at org.apache.commons.jxpath.ri.Parser.parseExpression(Parser.java:63) ~[commons-jxpath-1.3.jar:1.3]
        at org.apache.commons.jxpath.ri.JXPathContextReferenceImpl.compileExpression(JXPathContextReferenceImpl.java:249) ~[commons-jxpath-1.3.jar:1.3]
        at org.apache.commons.jxpath.ri.JXPathContextReferenceImpl.getValue(JXPathContextReferenceImpl.java:280) ~[commons-jxpath-1.3.jar:1.3]
        at org.opennms.protocols.json.collector.AbstractJsonCollectionHandler.fillCollectionSet(AbstractJsonCollectionHandler.java:100) ~[org.opennms.protocols.xml-16.0.0.jar:?]
        at org.opennms.protocols.json.collector.DefaultJsonCollectionHandler.fillCollectionSet(DefaultJsonCollectionHandler.java:54) ~[org.opennms.protocols.xml-16.0.0.jar:?]
        at org.opennms.protocols.xml.collector.AbstractXmlCollectionHandler.collect(AbstractXmlCollectionHandler.java:191) ~[org.opennms.protocols.xml-16.0.0.jar:?]
        at org.opennms.protocols.xml.collector.XmlCollector.collect(XmlCollector.java:168) ~[org.opennms.protocols.xml-16.0.0.jar:?]
        ... 12 more

I've checked newest version of opennms, but still got the same exception?


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