mark-bathori commented on code in PR #6902: URL: https://github.com/apache/nifi/pull/6902#discussion_r1094513004
########## nifi-nar-bundles/nifi-hive-bundle/nifi-hive3-processors/src/main/java/org/apache/nifi/processors/hive/TriggerHMSNotification.java: ########## @@ -0,0 +1,443 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.apache.nifi.processors.hive; + +import org.apache.hadoop.conf.Configuration; +import org.apache.hadoop.fs.FileChecksum; +import org.apache.hadoop.fs.FileSystem; +import org.apache.hadoop.fs.Path; +import org.apache.hadoop.hive.metastore.HiveMetaStoreClient; +import org.apache.hadoop.hive.metastore.api.FireEventRequest; +import org.apache.hadoop.hive.metastore.api.FireEventRequestData; +import org.apache.hadoop.hive.metastore.api.InsertEventRequestData; +import org.apache.hadoop.hive.metastore.api.NoSuchObjectException; +import org.apache.hadoop.hive.metastore.api.Table; +import org.apache.hadoop.hive.metastore.messaging.EventMessage; +import org.apache.hadoop.hive.metastore.utils.MetaStoreUtils; +import org.apache.hadoop.hive.metastore.utils.StringUtils; +import org.apache.hadoop.security.UserGroupInformation; +import org.apache.nifi.annotation.behavior.WritesAttribute; +import org.apache.nifi.annotation.behavior.WritesAttributes; +import org.apache.nifi.annotation.documentation.CapabilityDescription; +import org.apache.nifi.annotation.documentation.Tags; +import org.apache.nifi.annotation.lifecycle.OnScheduled; +import org.apache.nifi.components.PropertyDescriptor; +import org.apache.nifi.components.ValidationContext; +import org.apache.nifi.components.ValidationResult; +import org.apache.nifi.components.resource.ResourceCardinality; +import org.apache.nifi.components.resource.ResourceType; +import org.apache.nifi.expression.ExpressionLanguageScope; +import org.apache.nifi.flowfile.FlowFile; +import org.apache.nifi.hadoop.SecurityUtil; +import org.apache.nifi.kerberos.KerberosUserService; +import org.apache.nifi.processor.AbstractProcessor; +import org.apache.nifi.processor.ProcessContext; +import org.apache.nifi.processor.ProcessSession; +import org.apache.nifi.processor.Relationship; +import org.apache.nifi.processor.exception.ProcessException; +import org.apache.nifi.processor.util.StandardValidators; +import org.apache.nifi.security.krb.KerberosLoginException; +import org.apache.nifi.security.krb.KerberosUser; +import org.apache.nifi.util.hive.AuthenticationFailedException; +import org.apache.nifi.util.hive.HiveConfigurator; +import org.apache.nifi.util.hive.ValidationResources; +import org.apache.thrift.TException; + +import java.io.IOException; +import java.security.PrivilegedExceptionAction; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collection; +import java.util.Collections; +import java.util.HashSet; +import java.util.List; +import java.util.Set; +import java.util.concurrent.atomic.AtomicReference; + +@Tags({"hive", "metastore", "notification", "insert", "partition"}) +@CapabilityDescription("The processor is capable to trigger different type of events in the HiveMetaStore and generate notifications." + + "The metastore action to be executed is determined from the incoming path and event type attributes." + + "The notifications should be enabled in the metastore configuration to generate them e.g.: the 'hive.metastore.transactional.event.listeners' should have a proper listener configured.") +@WritesAttributes({ + @WritesAttribute(attribute = "metastore.notification.event", description = "The event type of the triggered notification.") +}) +public class TriggerHMSNotification extends AbstractProcessor { + + public static final String METASTORE_NOTIFICATION_EVENT = "metastore.notification.event"; + + private final HiveConfigurator hiveConfigurator = new HiveConfigurator(); + + private Configuration hiveConfig; + + private final AtomicReference<KerberosUser> kerberosUserReference = new AtomicReference<>(); + private volatile UserGroupInformation ugi; + + // Holder of cached Configuration information so validation does not reload the same config over and over + private final AtomicReference<ValidationResources> validationResourceHolder = new AtomicReference<>(); + + static final PropertyDescriptor HIVE_CONFIGURATION_RESOURCES = new PropertyDescriptor.Builder() Review Comment: That's a good point. I've added a Metastore URI property to the processor. It will act as an overwrite value for the Thrift URL as you've described. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
