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https://issues.apache.org/jira/browse/NIFI-4346?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16161283#comment-16161283
]
ASF GitHub Bot commented on NIFI-4346:
--------------------------------------
Github user markap14 commented on a diff in the pull request:
https://github.com/apache/nifi/pull/2125#discussion_r138073948
--- Diff:
nifi-nar-bundles/nifi-standard-services/nifi-hbase_1_1_2-client-service-bundle/nifi-hbase_1_1_2-client-service/src/main/java/org/apache/nifi/hbase/HBase_1_1_2_LookupService.java
---
@@ -0,0 +1,168 @@
+/*
+ * 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.hbase;
+
+import org.apache.hadoop.hbase.TableName;
+import org.apache.hadoop.hbase.client.Get;
+import org.apache.hadoop.hbase.client.Result;
+import org.apache.hadoop.hbase.client.Table;
+import org.apache.nifi.annotation.lifecycle.OnEnabled;
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.components.Validator;
+import org.apache.nifi.controller.ConfigurationContext;
+import org.apache.nifi.controller.ControllerServiceInitializationContext;
+import org.apache.nifi.lookup.LookupFailureException;
+import org.apache.nifi.lookup.LookupService;
+import org.apache.nifi.processor.util.StandardValidators;
+import org.apache.nifi.reporting.InitializationException;
+import org.apache.nifi.serialization.SimpleRecordSchema;
+import org.apache.nifi.serialization.record.MapRecord;
+import org.apache.nifi.serialization.record.RecordField;
+import org.apache.nifi.serialization.record.RecordFieldType;
+import org.apache.nifi.serialization.record.RecordSchema;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.NavigableMap;
+import java.util.Optional;
+import java.util.Set;
+
+public class HBase_1_1_2_LookupService extends HBase_1_1_2_ClientService
implements LookupService {
+ private static final Set<String> REQUIRED_KEYS;
+
+ public static final PropertyDescriptor TABLE_NAME = new
PropertyDescriptor.Builder()
+ .name("hb-lu-table-name")
+ .displayName("Table Name")
+ .description("The name of the table where look ups will be
run.")
+ .required(true)
+ .addValidator(StandardValidators.NON_BLANK_VALIDATOR)
+ .build();
+ public static final PropertyDescriptor RETURN_CFS = new
PropertyDescriptor.Builder()
+ .name("hb-lu-return-cfs")
+ .displayName("Column Families")
+ .description("The column families that will be returned.")
+ .required(true)
+ .addValidator(StandardValidators.NON_BLANK_VALIDATOR)
+ .build();
+ public static final PropertyDescriptor RETURN_QFS = new
PropertyDescriptor.Builder()
+ .name("hb-lu-return-qfs")
+ .displayName("Column Qualifiers")
+ .description("The column qualifies that will be returned.")
+ .required(false)
+ .addValidator(Validator.VALID)
+ .build();
+
+ static {
--- End diff --
Probably better to avoid the static block all together here and just
declare the variable as:
`private static final Set<String> REQUIRED_KEYS =
Collections.singleton("rowKey");`
> Add a lookup service that uses HBase
> ------------------------------------
>
> Key: NIFI-4346
> URL: https://issues.apache.org/jira/browse/NIFI-4346
> Project: Apache NiFi
> Issue Type: Improvement
> Reporter: Mike Thomsen
> Priority: Minor
>
> A LookupService based on HBase should be able to handle at least two
> scenarios:
> 1. Pull a single cell and return it as a string.
> 2. Pull multiple cells and return them as a Record that can be merged into
> another record.
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