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Measurements API can fail with exception when operating in relaxed mode

Description

When operating in relaxed mode, the Measurements API will skip resources and attributes that are not found.

If none of the resources or attributes given in the request were found, the Measurements API will throw an obscure error like:

Caused by: org.opennms.netmgt.measurements.api.exceptions.FetchException: Fetch failed: Xport failed. at org.opennms.netmgt.measurements.api.DefaultMeasurementsService.query(DefaultMeasurementsService.java:78) at Proxy8bfb87e1_bc86_4fd9_a279_d16b1710bad1.query(Unknown Source) at org.opennms.features.topology.api.info.MeasurementsWrapper.queryInt(MeasurementsWrapper.java:218) at org.opennms.features.topology.api.info.MeasurementsWrapper.getLastValue(MeasurementsWrapper.java:80) at org.opennms.features.topology.api.info.MeasurementsWrapper.getLastValue(MeasurementsWrapper.java:65) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at javax.el.BeanELResolver.invoke(BeanELResolver.java:500) ... 134 more Caused by: org.jrobin.core.RrdException: Xport failed. at org.opennms.netmgt.measurements.impl.JRrd2FetchStrategy.fetchMeasurements(JRrd2FetchStrategy.java:86) at org.opennms.netmgt.measurements.impl.AbstractRrdBasedFetchStrategy.fetchMeasurements(AbstractRrdBasedFetchStrategy.java:121) at org.opennms.netmgt.measurements.impl.AbstractRrdBasedFetchStrategy.fetch(AbstractRrdBasedFetchStrategy.java:110) at org.opennms.netmgt.measurements.api.DefaultMeasurementsService.query(DefaultMeasurementsService.java:68) ... 143 more Caused by: org.opennms.netmgt.rrd.jrrd2.api.JRrd2Exception: can't make an xport without contents at org.opennms.netmgt.rrd.jrrd2.impl.Interface.rrd_xport(Native Method) at org.opennms.netmgt.rrd.jrrd2.impl.JRrd2Jni.xport(JRrd2Jni.java:107) at org.opennms.netmgt.measurements.impl.JRrd2FetchStrategy.fetchMeasurements(JRrd2FetchStrategy.java:84) ... 146 more

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None

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Jesse White October 27, 2016 at 1:17 PM

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PagerDuty

Created August 9, 2016 at 11:57 AM
Updated February 15, 2018 at 8:50 PM
Resolved October 27, 2016 at 1:17 PM