Hi Abhay,
I did everything mentioned in the steps below – Created my custom
implementation of AtlasResourceMapper, added it in the lib and configured the
Tagsync config parameter. However, I am seeing an exception in my
<>/tagsync.log file:
12 Jun 2018 13:06:39 ERROR AtlasTagSource [Thread-7] - 187 Caught exception..:
org.json4s.package$MappingException: No usable value for values
Expected object but got JNothing
at org.json4s.reflect.package$.fail(package.scala:96)
at
org.json4s.Extraction$ClassInstanceBuilder.org$json4s$Extraction$ClassInstanceBuilder$$buildCtorArg(Extraction.scala:462)
at
org.json4s.Extraction$ClassInstanceBuilder$$anonfun$14.apply(Extraction.scala:482)
at
org.json4s.Extraction$ClassInstanceBuilder$$anonfun$14.apply(Extraction.scala:482)
at
scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
at
scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
at
scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:48)
at scala.collection.TraversableLike$class.map(TraversableLike.scala:234)
at scala.collection.AbstractTraversable.map(Traversable.scala:104)
at
org.json4s.Extraction$ClassInstanceBuilder.org$json4s$Extraction$ClassInstanceBuilder$$instantiate(Extraction.scala:470)
at
org.json4s.Extraction$ClassInstanceBuilder$$anonfun$result$6.apply(Extraction.scala:515)
at
org.json4s.Extraction$ClassInstanceBuilder$$anonfun$result$6.apply(Extraction.scala:512)
at
org.json4s.Extraction$.org$json4s$Extraction$$customOrElse(Extraction.scala:524)
at
org.json4s.Extraction$ClassInstanceBuilder.result(Extraction.scala:512)
at org.json4s.Extraction$.extract(Extraction.scala:351)
at org.json4s.Extraction$.extract(Extraction.scala:42)
at
org.json4s.ExtractableJsonAstNode.extract(ExtractableJsonAstNode.scala:21)
at org.json4s.native.Serialization$.read(Serialization.scala:71)
at
org.apache.atlas.typesystem.json.InstanceSerialization$.fromJsonReferenceable(InstanceSerialization.scala:371)
at
org.apache.atlas.typesystem.json.InstanceSerialization.fromJsonReferenceable(InstanceSerialization.scala)
at
org.apache.atlas.notification.AbstractMessageDeserializer$ReferenceableDeserializer.deserialize(AbstractMessageDeserializer.java:162)
at
org.apache.atlas.notification.AbstractMessageDeserializer$ReferenceableDeserializer.deserialize(AbstractMessageDeserializer.java:157)
at com.google.gson.TreeTypeAdapter.read(TreeTypeAdapter.java:58)
at
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:93)
at
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:172)
at com.google.gson.Gson.fromJson(Gson.java:803)
at com.google.gson.Gson.fromJson(Gson.java:868)
at com.google.gson.Gson$1.deserialize(Gson.java:126)
at
org.apache.atlas.notification.entity.EntityMessageDeserializer$EntityNotificationDeserializer.deserialize(EntityMessageDeserializer.java:73)
at
org.apache.atlas.notification.entity.EntityMessageDeserializer$EntityNotificationDeserializer.deserialize(EntityMessageDeserializer.java:69)
at com.google.gson.TreeTypeAdapter.read(TreeTypeAdapter.java:58)
at
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:93)
at
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:172)
at com.google.gson.Gson.fromJson(Gson.java:803)
at com.google.gson.Gson.fromJson(Gson.java:868)
at com.google.gson.Gson$1.deserialize(Gson.java:126)
at
org.apache.atlas.notification.entity.EntityMessageDeserializer$EntityNotificationDeserializer.deserialize(EntityMessageDeserializer.java:73)
at
org.apache.atlas.notification.entity.EntityMessageDeserializer$EntityNotificationDeserializer.deserialize(EntityMessageDeserializer.java:69)
at com.google.gson.TreeTypeAdapter.read(TreeTypeAdapter.java:58)
at
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:93)
at
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:172)
at com.google.gson.Gson.fromJson(Gson.java:803)
at com.google.gson.Gson.fromJson(Gson.java:768)
at com.google.gson.Gson.fromJson(Gson.java:717)
at
org.apache.atlas.notification.AtlasNotificationMessageDeserializer.deserialize(AtlasNotificationMessageDeserializer.java:210)
at
org.apache.atlas.kafka.AtlasKafkaConsumer.receive(AtlasKafkaConsumer.java:72)
at
org.apache.ranger.tagsync.source.atlas.AtlasTagSource$ConsumerRunnable.run(AtlasTagSource.java:165)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.json4s.package$MappingException: Expected object but got JNothing
at org.json4s.Extraction$.extract(Extraction.scala:336)
at
org.json4s.Extraction$ClassInstanceBuilder.org$json4s$Extraction$ClassInstanceBuilder$$buildCtorArg(Extraction.scala:450)
... 39 more
My Apache Ranger version is 0.7.0 and Atlas version is 1.0.0.
I thought this may be due to incompatible Atlas Notification message in Kafka
so I added the following config in Atlas:
atlas.notification.entity.version=v1
Then I deleted ATLAS_ENTITIES kafka topic to flush old messages, restarted
Atlas, Ranger and retried. Again, I am seeing similar exception:
12 Jun 2018 20:19:22 ERROR AtlasTagSource [Thread-7] - 187 Caught exception..:
org.json4s.package$MappingException: No usable value for traits
No usable value for values
Expected object but got JNull
at org.json4s.reflect.package$.fail(package.scala:96)
at
org.json4s.Extraction$ClassInstanceBuilder.org$json4s$Extraction$ClassInstanceBuilder$$buildCtorArg(Extraction.scala:462)
at
org.json4s.Extraction$ClassInstanceBuilder$$anonfun$14.apply(Extraction.scala:482)
at
org.json4s.Extraction$ClassInstanceBuilder$$anonfun$14.apply(Extraction.scala:482)
at
scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
at
scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
at
scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:48)
at scala.collection.TraversableLike$class.map(TraversableLike.scala:234)
at scala.collection.AbstractTraversable.map(Traversable.scala:104)
at
org.json4s.Extraction$ClassInstanceBuilder.org$json4s$Extraction$ClassInstanceBuilder$$instantiate(Extraction.scala:470)
at
org.json4s.Extraction$ClassInstanceBuilder$$anonfun$result$6.apply(Extraction.scala:515)
at
org.json4s.Extraction$ClassInstanceBuilder$$anonfun$result$6.apply(Extraction.scala:512)
at
org.json4s.Extraction$.org$json4s$Extraction$$customOrElse(Extraction.scala:524)
at
org.json4s.Extraction$ClassInstanceBuilder.result(Extraction.scala:512)
at org.json4s.Extraction$.extract(Extraction.scala:351)
at
org.json4s.Extraction$ClassInstanceBuilder.org$json4s$Extraction$ClassInstanceBuilder$$mkWithTypeHint(Extraction.scala:507)
at
org.json4s.Extraction$ClassInstanceBuilder$$anonfun$result$6.apply(Extraction.scala:514)
at
org.json4s.Extraction$ClassInstanceBuilder$$anonfun$result$6.apply(Extraction.scala:512)
at
org.json4s.Extraction$.org$json4s$Extraction$$customOrElse(Extraction.scala:524)
at
org.json4s.Extraction$ClassInstanceBuilder.result(Extraction.scala:512)
at org.json4s.Extraction$.extract(Extraction.scala:351)
at org.json4s.Extraction$.extract(Extraction.scala:42)
at
org.json4s.ExtractableJsonAstNode.extract(ExtractableJsonAstNode.scala:21)
at org.json4s.native.Serialization$.read(Serialization.scala:71)
at
org.apache.atlas.typesystem.json.InstanceSerialization$.fromJsonReferenceable(InstanceSerialization.scala:371)
at
org.apache.atlas.typesystem.json.InstanceSerialization.fromJsonReferenceable(InstanceSerialization.scala)
at
org.apache.atlas.notification.AbstractMessageDeserializer$ReferenceableDeserializer.deserialize(AbstractMessageDeserializer.java:162)
at
org.apache.atlas.notification.AbstractMessageDeserializer$ReferenceableDeserializer.deserialize(AbstractMessageDeserializer.java:157)
at com.google.gson.TreeTypeAdapter.read(TreeTypeAdapter.java:58)
at
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:93)
at
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:172)
at com.google.gson.Gson.fromJson(Gson.java:803)
at com.google.gson.Gson.fromJson(Gson.java:868)
at com.google.gson.Gson$1.deserialize(Gson.java:126)
at
org.apache.atlas.notification.entity.EntityMessageDeserializer$EntityNotificationDeserializer.deserialize(EntityMessageDeserializer.java:73)
at
org.apache.atlas.notification.entity.EntityMessageDeserializer$EntityNotificationDeserializer.deserialize(EntityMessageDeserializer.java:69)
at com.google.gson.TreeTypeAdapter.read(TreeTypeAdapter.java:58)
at
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:93)
at
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:172)
at com.google.gson.Gson.fromJson(Gson.java:803)
at com.google.gson.Gson.fromJson(Gson.java:768)
at com.google.gson.Gson.fromJson(Gson.java:717)
at
org.apache.atlas.notification.AtlasNotificationMessageDeserializer.deserialize(AtlasNotificationMessageDeserializer.java:210)
at
org.apache.atlas.kafka.AtlasKafkaConsumer.receive(AtlasKafkaConsumer.java:72)
at
org.apache.ranger.tagsync.source.atlas.AtlasTagSource$ConsumerRunnable.run(AtlasTagSource.java:165)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.json4s.package$MappingException: No usable value for values
Expected object but got JNull
at org.json4s.reflect.package$.fail(package.scala:96)
at
org.json4s.Extraction$ClassInstanceBuilder.org$json4s$Extraction$ClassInstanceBuilder$$buildCtorArg(Extraction.scala:462)
at
org.json4s.Extraction$ClassInstanceBuilder$$anonfun$14.apply(Extraction.scala:482)
at
org.json4s.Extraction$ClassInstanceBuilder$$anonfun$14.apply(Extraction.scala:482)
at
scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
….
Can you/someone please tell me how can I fix this?
Thanks & Regards,
Rajat
From: Abhay Kulkarni
<akulka...@hortonworks.com<mailto:akulka...@hortonworks.com>>
Reply-To: "user@ranger.apache.org<mailto:user@ranger.apache.org>"
<user@ranger.apache.org<mailto:user@ranger.apache.org>>
Date: Wednesday, 23 May 2018 at 10:05 PM
To: "user@ranger.apache.org<mailto:user@ranger.apache.org>"
<user@ranger.apache.org<mailto:user@ranger.apache.org>>
Subject: Re: Custom service integration and Tag based policies
Hi Rajat,
Here are the steps required to enable Tagsync to map custom Atlas Entities to
Ranger Entities (aka Service Resources).
* Provide an implementation of AtlasResourceMapper Java class. You may look
up other implementation classes such as AtlasHdfsResourceMapper or
AtlasHiveResourceMapper which map hfds and hive Atlas entities to Ranger
Service Resources respectively. Specifically, you need to implement
buildResource() member function where your component’s RangerAtlasEntity object
needs to be converted to generic RangerServiceResource object.
* Set up the following Tagsync configuration parameter in
ranger-tagsync-site.xml file. If using Ambari, you may do this by going to
'Ranger->Configs->Advanced->Custom ranger-tagsync-site->Add Property’.
ranger.tagsync.atlas.custom.resource.mappers=<fully-qualified-name-of-the-implementation-class>
* Ensure that the implementation class is in the class-path of tagsync. One
way to do this is to place the JAR containing the implementation class in
/usr/hdp/current/ranger-tagsync/lib directory.
* Restart tagsync.
* Check /var/log/ranger/tagsync/tagsync.out and
/var/log/ranger/tagsync/tagsync.log files to ensure that there are no errors in
initializing AtlasTagSource.
Hope this helps.
Thanks,
-Abhay
From: Rajat Goel <rajat.g...@guavus.com<mailto:rajat.g...@guavus.com>>
Reply-To: "user@ranger.apache.org<mailto:user@ranger.apache.org>"
<user@ranger.apache.org<mailto:user@ranger.apache.org>>
Date: Wednesday, May 23, 2018 at 7:02 AM
To: "user@ranger.apache.org<mailto:user@ranger.apache.org>"
<user@ranger.apache.org<mailto:user@ranger.apache.org>>
Subject: Custom service integration and Tag based policies
Hi,
I am new to Ranger. I am trying to integrate my custom web service with Ranger
for authorisation and policy management. I have successfully tested Resource
based policy management integration of my web service with Ranger. Now I want
to integrate and enable Tag based policy. I have added my custom types and
entities in Atlas. How can I provide tag based policy and authorisation?
While reading some documentation and code, I found that I will have to add
implementation of ‘AtlasResourceMapper.java’ in Ranger Tag sync process on the
lines of AtlasKafkaResourceMapper.java. Is my understanding correct? Can
someone point me to any documentation on how to write a custom class which
extends AtlasResourceMapper? Also, are there more steps/code that needs to be
written or just the AtlasResourceMapper implementation will suffice?
Thanks & Regards,
Rajat
