danny0405 commented on code in PR #13126: URL: https://github.com/apache/hudi/pull/13126#discussion_r2041287841
########## hudi-aws/src/main/java/org/apache/hudi/aws/transaction/lock/S3StorageLockClient.java: ########## @@ -0,0 +1,270 @@ +/* + * 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.hudi.aws.transaction.lock; + +import org.apache.hudi.aws.credentials.HoodieAWSCredentialsProviderFactory; +import org.apache.hudi.client.transaction.lock.StorageLockClient; +import org.apache.hudi.client.transaction.lock.models.LockGetResult; +import org.apache.hudi.client.transaction.lock.models.LockUpsertResult; +import org.apache.hudi.client.transaction.lock.models.StorageLockData; +import org.apache.hudi.client.transaction.lock.models.StorageLockFile; +import org.apache.hudi.common.util.Functions; +import org.apache.hudi.common.util.Option; +import org.apache.hudi.common.util.StringUtils; +import org.apache.hudi.common.util.VisibleForTesting; +import org.apache.hudi.common.util.collection.Pair; +import org.apache.hudi.exception.HoodieLockException; + +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import software.amazon.awssdk.awscore.exception.AwsServiceException; +import software.amazon.awssdk.core.ResponseInputStream; +import software.amazon.awssdk.core.exception.SdkClientException; +import software.amazon.awssdk.core.sync.RequestBody; +import software.amazon.awssdk.regions.Region; +import software.amazon.awssdk.regions.providers.DefaultAwsRegionProviderChain; +import software.amazon.awssdk.services.s3.S3Client; +import software.amazon.awssdk.services.s3.model.GetBucketLocationRequest; +import software.amazon.awssdk.services.s3.model.GetBucketLocationResponse; +import software.amazon.awssdk.services.s3.model.GetObjectRequest; +import software.amazon.awssdk.services.s3.model.GetObjectResponse; +import software.amazon.awssdk.services.s3.model.PutObjectRequest; +import software.amazon.awssdk.services.s3.model.PutObjectResponse; +import software.amazon.awssdk.services.s3.model.S3Exception; + +import javax.annotation.concurrent.ThreadSafe; + +import java.io.IOException; +import java.io.UncheckedIOException; +import java.net.URI; +import java.net.URISyntaxException; +import java.time.Duration; +import java.util.Properties; + +import static org.apache.hudi.config.StorageBasedLockConfig.VALIDITY_TIMEOUT_SECONDS; + +/** + * S3-based distributed lock client using ETag checks (AWS SDK v2). + * See RFC: <a href="https://github.com/apache/hudi/blob/master/rfc/rfc-91/rfc-91.md";>RFC-91</a> + */ +@ThreadSafe +public class S3StorageLockClient implements StorageLockClient { + + private static final Logger LOG = LoggerFactory.getLogger(S3StorageLockClient.class); + private static final int PRECONDITION_FAILURE_ERROR_CODE = 412; + private static final int NOT_FOUND_ERROR_CODE = 404; + private static final int CONDITIONAL_REQUEST_CONFLICT_ERROR_CODE = 409; + private static final int RATE_LIMIT_ERROR_CODE = 429; + private static final int INTERNAL_SERVER_ERROR_CODE_MIN = 500; + + private final Logger logger; + private final S3Client s3Client; + private final String bucketName; + private final String lockFilePath; + private final String ownerId; + + /** + * Constructor that is used by reflection to instantiate an S3-based storage locking client. + * + * @param ownerId The owner id. + * @param lockFileUri The full table base path where the lock will be written. + * @param props The properties for the lock config, can be used to customize client. + */ + public S3StorageLockClient(String ownerId, String lockFileUri, Properties props) { + this(ownerId, lockFileUri, props, createDefaultS3Client(), LOG); + } + + @VisibleForTesting + S3StorageLockClient(String ownerId, String lockFileUri, Properties props, Functions.Function2<String, Properties, S3Client> s3ClientSupplier, Logger logger) { + try { + // This logic can likely be extended to other lock client implementations. + // Consider creating base class with utilities, incl error handling. + URI uri = new URI(lockFileUri); + this.bucketName = uri.getHost(); + this.lockFilePath = uri.getPath().replaceFirst("/", ""); + this.s3Client = s3ClientSupplier.apply(bucketName, props); + + if (StringUtils.isNullOrEmpty(this.bucketName)) { + throw new IllegalArgumentException("LockFileUri does not contain a valid bucket name."); + } + if (StringUtils.isNullOrEmpty(this.lockFilePath)) { + throw new IllegalArgumentException("LockFileUri does not contain a valid lock file path."); + } + this.ownerId = ownerId; + this.logger = logger; + } catch (URISyntaxException e) { + throw new HoodieLockException(e); + } + } + + @Override + public Pair<LockGetResult, Option<StorageLockFile>> readCurrentLockFile() { + try (ResponseInputStream<GetObjectResponse> in = s3Client.getObject( + GetObjectRequest.builder() + .bucket(bucketName) + .key(lockFilePath) + .build())) { + String eTag = in.response().eTag(); + return Pair.of(LockGetResult.SUCCESS, Option.of(StorageLockFile.createFromStream(in, eTag))); + } catch (S3Exception e) { + int status = e.statusCode(); + // Default to unknown error + LockGetResult result = LockGetResult.UNKNOWN_ERROR; Review Comment: rename `handleUpsertS3Exception` to `handleS3Exception` and reuse it here? -- This is an automated message from the Apache Git Service. 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