TestHdfsResourceMapper.java

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 * 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
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 * Unless required by applicable law or agreed to in writing,
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 * specific language governing permissions and limitations
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package org.apache.ranger.tagsync.process;

import java.util.HashMap;
import java.util.Map;
import java.util.Properties;

import org.apache.atlas.typesystem.IReferenceableInstance;
import org.apache.ranger.plugin.model.RangerServiceResource;
import org.apache.ranger.tagsync.source.atlas.AtlasHdfsResourceMapper;
import org.apache.ranger.tagsync.source.atlas.AtlasResourceMapper;
import org.junit.Test;

import org.mockito.Mockito;
import org.junit.Assert;



public class TestHdfsResourceMapper {
	private static final String CLUSTER_NAME   = "cl1";
	private static final String PATH           = "hdfs://localhost:8020/user/testuser/finance";
	private static final String QUALIFIED_NAME = "hdfs://localhost:8020/user/testuser/finance@cl1";

	private static final String SERVICE_NAME = "cl1_hadoop";
	private static final String RANGER_PATH  = "/user/testuser/finance";

	AtlasHdfsResourceMapper resourceMapper = new AtlasHdfsResourceMapper();
	AtlasHdfsResourceMapper resourceMapperWithDefaultClusterName = new AtlasHdfsResourceMapper();

	{
		Properties properties = new Properties();

		properties.setProperty(AtlasResourceMapper.TAGSYNC_DEFAULT_CLUSTER_NAME, CLUSTER_NAME);

		resourceMapperWithDefaultClusterName.initialize(properties);
	}

	@Test
	public void testHdfsResourceFromPathAndClusterName() throws Exception {
		Map<String, Object> entAttribs = new HashMap<String, Object>();

		entAttribs.put(AtlasHdfsResourceMapper.ENTITY_ATTRIBUTE_PATH, PATH);
		entAttribs.put(AtlasHdfsResourceMapper.ENTITY_ATTRIBUTE_CLUSTER_NAME, CLUSTER_NAME);

		IReferenceableInstance entity   = getHdfsPathEntity(entAttribs);
		RangerServiceResource  resource = resourceMapper.buildResource(entity);

		assertServiceResource(resource);
	}

	@Test
	public void testHdfsResourceFromPathAndQualifiedName() throws Exception {
		Map<String, Object> entAttribs = new HashMap<String, Object>();

		entAttribs.put(AtlasHdfsResourceMapper.ENTITY_ATTRIBUTE_PATH, PATH);
		entAttribs.put(AtlasHdfsResourceMapper.ENTITY_ATTRIBUTE_QUALIFIED_NAME, QUALIFIED_NAME);

		IReferenceableInstance entity   = getHdfsPathEntity(entAttribs);
		RangerServiceResource  resource = resourceMapper.buildResource(entity);

		assertServiceResource(resource);
	}

	@Test
	public void testHdfsResourceFromClusterNameAndQualifiedName() throws Exception {
		Map<String, Object> entAttribs = new HashMap<String, Object>();

		entAttribs.put(AtlasHdfsResourceMapper.ENTITY_ATTRIBUTE_CLUSTER_NAME, CLUSTER_NAME);
		entAttribs.put(AtlasHdfsResourceMapper.ENTITY_ATTRIBUTE_QUALIFIED_NAME, QUALIFIED_NAME);

		IReferenceableInstance entity   = getHdfsPathEntity(entAttribs);
		RangerServiceResource  resource = resourceMapper.buildResource(entity);

		assertServiceResource(resource);
	}

	@Test
	public void testHdfsResourceFromPathAndClusterNameAndQualifiedName() throws Exception {
		Map<String, Object> entAttribs = new HashMap<String, Object>();

		entAttribs.put(AtlasHdfsResourceMapper.ENTITY_ATTRIBUTE_PATH, PATH);
		entAttribs.put(AtlasHdfsResourceMapper.ENTITY_ATTRIBUTE_CLUSTER_NAME, CLUSTER_NAME);
		entAttribs.put(AtlasHdfsResourceMapper.ENTITY_ATTRIBUTE_QUALIFIED_NAME, QUALIFIED_NAME);

		IReferenceableInstance entity   = getHdfsPathEntity(entAttribs);
		RangerServiceResource  resource = resourceMapper.buildResource(entity);

		assertServiceResource(resource);
	}

	@Test
	public void testHdfsResourceFromQualifiedNameAndClusterNameFromDefault() throws Exception {
		Map<String, Object> entAttribs = new HashMap<String, Object>();

		entAttribs.put(AtlasHdfsResourceMapper.ENTITY_ATTRIBUTE_QUALIFIED_NAME, PATH);

		IReferenceableInstance entity   = getHdfsPathEntity(entAttribs);
		RangerServiceResource  resource = resourceMapperWithDefaultClusterName.buildResource(entity);

		assertServiceResource(resource);
	}

	@Test
	public void testHdfsResourceFromPathAndClusterNameFromDefault() throws Exception {
		Map<String, Object> entAttribs = new HashMap<String, Object>();

		entAttribs.put(AtlasHdfsResourceMapper.ENTITY_ATTRIBUTE_PATH, PATH);

		IReferenceableInstance entity   = getHdfsPathEntity(entAttribs);
		RangerServiceResource  resource = resourceMapperWithDefaultClusterName.buildResource(entity);

		assertServiceResource(resource);
	}

	@Test
	public void testHdfsResourceFromMissingAttribs() throws Exception {
		Map<String, Object> entAttribs = new HashMap<String, Object>();

		IReferenceableInstance entity  = getHdfsPathEntity(entAttribs);

		try {
			RangerServiceResource resource = resourceMapper.buildResource(entity);

			Assert.fail("expected exception. Found " + resource);
		} catch(Exception excp) {
			// ignore
		}
	}

	private IReferenceableInstance getHdfsPathEntity(Map<String, Object> entAttribs) throws Exception {
		IReferenceableInstance entity = Mockito.mock(IReferenceableInstance.class);

		Mockito.when(entity.getTypeName()).thenReturn(AtlasHdfsResourceMapper.ENTITY_TYPE_HDFS_PATH);
		Mockito.when(entity.getValuesMap()).thenReturn(entAttribs);

		return entity;
	}

	private void assertServiceResource(RangerServiceResource resource) {
		Assert.assertNotNull(resource);
		Assert.assertEquals(SERVICE_NAME, resource.getServiceName());
		Assert.assertNotNull(resource.getResourceElements());
		Assert.assertEquals(1, resource.getResourceElements().size());
		Assert.assertTrue(resource.getResourceElements().containsKey(AtlasHdfsResourceMapper.RANGER_TYPE_HDFS_PATH));
		Assert.assertNotNull(resource.getResourceElements().get(AtlasHdfsResourceMapper.RANGER_TYPE_HDFS_PATH).getValues());
		Assert.assertEquals(1, resource.getResourceElements().get(AtlasHdfsResourceMapper.RANGER_TYPE_HDFS_PATH).getValues().size());
		Assert.assertEquals(RANGER_PATH, resource.getResourceElements().get(AtlasHdfsResourceMapper.RANGER_TYPE_HDFS_PATH).getValues().get(0));
	}
}