com.fasterxml.jackson.databind.JsonMappingException

I am getting ‘The username may not be null or empty’ error message when I started jmxtrans using the following command.

./jmxtrans.sh start ~/jmx_influx.json

json file content:

{
  "servers" : [ {
    "port" : "8999",
    "host" : "10.10.90.54",
    "username" : "vganta",
    "queries" : [ {
      "obj" : "java.lang:type=Memory",
      "attr" : [ "HeapMemoryUsage", "NonHeapMemoryUsage" ],
      "resultAlias":"jvmMemory",
      "outputWriters" : [ {
        "@class" : "com.googlecode.jmxtrans.model.output.InfluxDbWriterFactory",
        "url" : "http://10.10.90.54:8086/",
        "database" : "jmxDB"
      } ]
    } ]
  } ]
}

Logs:

[17 Nov 2016 16:24:22] [main] 167    ERROR (com.googlecode.jmxtrans.JmxTransformer:190) - Error parsing json: /home/vganta/jmx_influx.json
com.googlecode.jmxtrans.exceptions.LifecycleException: Error parsing json: /home/vganta/jmx_influx.json
        at com.googlecode.jmxtrans.ConfigurationParser.parseServers(ConfigurationParser.java:62)
        at com.googlecode.jmxtrans.JmxTransformer.processFilesIntoServers(JmxTransformer.java:354)
        at com.googlecode.jmxtrans.JmxTransformer.startupSystem(JmxTransformer.java:322)
        at com.googlecode.jmxtrans.JmxTransformer.start(JmxTransformer.java:187)
        at com.googlecode.jmxtrans.JmxTransformer.doMain(JmxTransformer.java:157)
        at com.googlecode.jmxtrans.JmxTransformer.main(JmxTransformer.java:138)
Caused by: com.fasterxml.jackson.databind.JsonMappingException: Instantiation of [simple type, class com.googlecode.jmxtrans.model.output.InfluxDbWriterFactory] value failed (java.lang.IllegalArgumentExcep
tion): The username may not be null or empty.
 at [Source: N/A; line: -1, column: -1] (through reference chain: com.googlecode.jmxtrans.model.JmxProcess["servers"]->java.util.ArrayList[0]->com.googlecode.jmxtrans.model.Server["queries"]->java.util.Arr
ayList[0]->com.googlecode.jmxtrans.model.Query["outputWriters"]->java.util.ArrayList[0])
        at com.fasterxml.jackson.databind.JsonMappingException.from(JsonMappingException.java:262)
        at com.fasterxml.jackson.databind.deser.std.StdValueInstantiator.wrapAsJsonMappingException(StdValueInstantiator.java:445)
        at com.fasterxml.jackson.databind.deser.std.StdValueInstantiator.rewrapCtorProblem(StdValueInstantiator.java:464)
        at com.fasterxml.jackson.databind.deser.std.StdValueInstantiator.createFromObjectWith(StdValueInstantiator.java:258)
        at com.fasterxml.jackson.databind.deser.impl.PropertyBasedCreator.build(PropertyBasedCreator.java:135)
        at com.fasterxml.jackson.databind.deser.BeanDeserializer._deserializeUsingPropertyBased(BeanDeserializer.java:444)
        at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.deserializeFromObjectUsingNonDefault(BeanDeserializerBase.java:1123)
        at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:298)
        at com.fasterxml.jackson.databind.deser.BeanDeserializer._deserializeOther(BeanDeserializer.java:168)
        at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:135)
        at com.fasterxml.jackson.databind.jsontype.impl.AsPropertyTypeDeserializer._deserializeTypedForId(AsPropertyTypeDeserializer.java:120)
        at com.fasterxml.jackson.databind.jsontype.impl.AsPropertyTypeDeserializer.deserializeTypedFromObject(AsPropertyTypeDeserializer.java:91)
        at com.fasterxml.jackson.databind.deser.AbstractDeserializer.deserializeWithType(AbstractDeserializer.java:142)
        at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:279)
        at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:249)
        at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:26)
        at com.fasterxml.jackson.databind.deser.SettableBeanProperty.deserialize(SettableBeanProperty.java:490)
        at com.fasterxml.jackson.databind.deser.BeanDeserializer._deserializeWithErrorWrapping(BeanDeserializer.java:465)
        at com.fasterxml.jackson.databind.deser.BeanDeserializer._deserializeUsingPropertyBased(BeanDeserializer.java:380)
        at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.deserializeFromObjectUsingNonDefault(BeanDeserializerBase.java:1123)
        at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:298)
        at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:133)
        at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:277)
        at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:249)
        at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:26)
        at com.fasterxml.jackson.databind.deser.SettableBeanProperty.deserialize(SettableBeanProperty.java:490)
        at com.fasterxml.jackson.databind.deser.BeanDeserializer._deserializeWithErrorWrapping(BeanDeserializer.java:465)
        at com.fasterxml.jackson.databind.deser.BeanDeserializer._deserializeUsingPropertyBased(BeanDeserializer.java:380)
        at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.deserializeFromObjectUsingNonDefault(BeanDeserializerBase.java:1123)
        at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:298)
        at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:133)
        at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:277)
        at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:249)
        at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:26)
        at com.fasterxml.jackson.databind.deser.SettableBeanProperty.deserialize(SettableBeanProperty.java:490)
        at com.fasterxml.jackson.databind.deser.impl.MethodProperty.deserializeAndSet(MethodProperty.java:95)
        at com.fasterxml.jackson.databind.deser.BeanDeserializer.vanillaDeserialize(BeanDeserializer.java:260)
        at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:125)
        at com.fasterxml.jackson.databind.ObjectMapper._readValue(ObjectMapper.java:3779)
        at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:2050)
        at com.fasterxml.jackson.databind.ObjectMapper.treeToValue(ObjectMapper.java:2547)
        at com.googlecode.jmxtrans.util.JsonUtils.parseProcess(JsonUtils.java:54)
        at com.googlecode.jmxtrans.ConfigurationParser.parseServers(ConfigurationParser.java:55)
        ... 5 more
Caused by: java.lang.IllegalArgumentException: The username may not be null or empty.
        at com.google.common.base.Preconditions.checkArgument(Preconditions.java:122)
        at org.influxdb.InfluxDBFactory.connect(InfluxDBFactory.java:33)
        at com.googlecode.jmxtrans.model.output.InfluxDbWriterFactory.<init>(InfluxDbWriterFactory.java:100)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at com.fasterxml.jackson.databind.introspect.AnnotatedConstructor.call(AnnotatedConstructor.java:114)
        at com.fasterxml.jackson.databind.deser.std.StdValueInstantiator.createFromObjectWith(StdValueInstantiator.java:256)
        ... 44 more

[veerareddyganta]

Thanks for pointing out the problem. I am able to successfully start jmxtrans process using the following json.

{
  "servers" : [ {
    "port" : "8999",
    "host" : "10.19.93.54",
    "queries" : [ {
      "obj" : "java.lang:type=Memory",
      "attr" : [ "HeapMemoryUsage", "NonHeapMemoryUsage" ],
      "resultAlias":"jvmMemory",
      "outputWriters" : [ {
        "@class" : "com.googlecode.jmxtrans.model.output.InfluxDbWriterFactory",
        "url" : "http://10.19.93.54:8086/",
        "username" : "admin",
        "password" : "admin",
        "database" : "jmxDB"
      } ]
    } ]
  } ]
}

[gehel]

Just open an issue describing what new feature you want.