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Feature: Enable/Disable kerberos authentication for cloudera manager …
…hbase instance (#1793)
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athena-hbase/src/main/java/com/amazonaws/athena/connectors/hbase/HbaseKerberosUtils.java
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| /*- | ||
| * #%L | ||
| * athena-hbase | ||
| * %% | ||
| * Copyright (C) 2019 - 2024 Amazon Web Services | ||
| * %% | ||
| * Licensed 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. | ||
| * #L% | ||
| */ | ||
| package com.amazonaws.athena.connectors.hbase; | ||
|
|
||
| import com.amazonaws.auth.AWSCredentials; | ||
| import com.amazonaws.auth.AWSStaticCredentialsProvider; | ||
| import com.amazonaws.auth.DefaultAWSCredentialsProviderChain; | ||
| import com.amazonaws.services.s3.AmazonS3; | ||
| import com.amazonaws.services.s3.AmazonS3ClientBuilder; | ||
| import com.amazonaws.services.s3.model.GetObjectRequest; | ||
| import com.amazonaws.services.s3.model.ObjectListing; | ||
| import com.amazonaws.services.s3.model.S3Object; | ||
| import com.amazonaws.services.s3.model.S3ObjectSummary; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
|
|
||
| import java.io.BufferedInputStream; | ||
| import java.io.File; | ||
| import java.io.InputStream; | ||
| import java.nio.file.Files; | ||
| import java.nio.file.Path; | ||
| import java.nio.file.Paths; | ||
| import java.nio.file.StandardCopyOption; | ||
|
|
||
| public class HbaseKerberosUtils | ||
| { | ||
| private static final Logger logger = LoggerFactory.getLogger(HbaseKerberosUtils.class); | ||
|
|
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| /** | ||
| * For Kerberos authentication, user need to give S3 bucket reference where the config | ||
| * files are uploaded. | ||
| */ | ||
| public static final String KERBEROS_CONFIG_FILES_S3_REFERENCE = "kerberos_config_files_s3_reference"; | ||
| /** | ||
| * This is temp folder where the kerberos config files from S3 will be downloaded | ||
| */ | ||
| public static final String TEMP_DIR = "/tmp"; | ||
| public static final String PRINCIPAL_NAME = "principal_name"; | ||
| public static final String HBASE_RPC_PROTECTION = "hbase_rpc_protection"; | ||
| public static final String KERBEROS_AUTH_ENABLED = "kerberos_auth_enabled"; | ||
|
|
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| private HbaseKerberosUtils() {} | ||
|
|
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| /** | ||
| * Downloads the config files from S3 to temp directory. | ||
| * | ||
| * @throws Exception - {@link Exception} | ||
| */ | ||
| public static Path copyConfigFilesFromS3ToTempFolder(java.util.Map<String, String> configOptions) throws Exception | ||
| { | ||
| logger.debug("Creating the connection with AWS S3 for copying config files to Temp Folder"); | ||
| Path tempDir = getTempDirPath(); | ||
| AWSCredentials credentials = new DefaultAWSCredentialsProviderChain().getCredentials(); | ||
| AmazonS3 s3Client = AmazonS3ClientBuilder.standard(). | ||
| withCredentials(new AWSStaticCredentialsProvider(credentials)). | ||
| build(); | ||
|
|
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| String s3uri = getRequiredConfig(KERBEROS_CONFIG_FILES_S3_REFERENCE, configOptions); | ||
| String[] s3Bucket = s3uri.split("s3://")[1].split("/"); | ||
|
|
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| ObjectListing objectListing = s3Client.listObjects(s3Bucket[0], s3Bucket[1]); | ||
|
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| for (S3ObjectSummary objectSummary : objectListing.getObjectSummaries()) { | ||
| S3Object object = s3Client.getObject(new GetObjectRequest(s3Bucket[0], objectSummary.getKey())); | ||
| InputStream inputStream = new BufferedInputStream(object.getObjectContent()); | ||
| String key = objectSummary.getKey(); | ||
| String fName = key.substring(key.indexOf('/') + 1); | ||
| if (!fName.isEmpty()) { | ||
| File file = new File(tempDir + File.separator + fName); | ||
| Files.copy(inputStream, file.toPath(), StandardCopyOption.REPLACE_EXISTING); | ||
| } | ||
| } | ||
| return tempDir; | ||
| } | ||
|
|
||
| /** | ||
| * Creates the temp directory to put the kerberos auth config files. | ||
| * | ||
| * @return {@link Path} Temp directory path | ||
| */ | ||
| private static Path getTempDirPath() | ||
| { | ||
| Path tmpPath = Paths.get(TEMP_DIR).toAbsolutePath(); | ||
| File filePath = new File(tmpPath + File.separator + "hbasekerberosconfigs"); | ||
| if (filePath.exists()) { | ||
| return filePath.toPath(); | ||
| } | ||
| boolean isCreated = filePath.mkdirs(); | ||
| logger.info("Is new directory created? " + isCreated); | ||
| return filePath.toPath(); | ||
| } | ||
|
|
||
| /** | ||
| * Gets the environment variable. | ||
| * | ||
| * @param key - the config key | ||
| * @return {@link String} | ||
| */ | ||
| private static String getRequiredConfig(String key, java.util.Map<String, String> configOptions) | ||
| { | ||
| String value = configOptions.getOrDefault(key, ""); | ||
| if (value.isEmpty()) { | ||
| throw new IllegalArgumentException("Lambda Environment Variable " + key + " has not been populated! "); | ||
| } | ||
| return value; | ||
| } | ||
| } |
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