MikeThomsen commented on code in PR #8992: URL: https://github.com/apache/nifi/pull/8992#discussion_r1717408044
########## nifi-extension-bundles/nifi-aws-bundle/nifi-aws-processors/src/main/java/org/apache/nifi/processors/aws/s3/GetS3ObjectMetadata.java: ########## @@ -0,0 +1,208 @@ +/* + * 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.aws.s3; + +import com.amazonaws.AmazonClientException; +import com.amazonaws.services.s3.AmazonS3Client; +import com.amazonaws.services.s3.model.AmazonS3Exception; +import com.amazonaws.services.s3.model.ObjectMetadata; +import com.fasterxml.jackson.databind.ObjectMapper; +import org.apache.nifi.annotation.behavior.InputRequirement; +import org.apache.nifi.annotation.documentation.CapabilityDescription; +import org.apache.nifi.annotation.documentation.SeeAlso; +import org.apache.nifi.annotation.documentation.Tags; +import org.apache.nifi.components.AllowableValue; +import org.apache.nifi.components.PropertyDescriptor; +import org.apache.nifi.components.Validator; +import org.apache.nifi.expression.ExpressionLanguageScope; +import org.apache.nifi.flowfile.FlowFile; +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 java.io.IOException; +import java.nio.charset.StandardCharsets; +import java.util.HashMap; +import java.util.HashSet; +import java.util.List; +import java.util.Map; +import java.util.Set; +import java.util.regex.Pattern; +import java.util.stream.Collectors; + +import static org.apache.nifi.processors.aws.util.RegionUtilV1.S3_REGION; + +@Tags({"Amazon", "S3", "AWS", "Archive", "Exists"}) +@InputRequirement(InputRequirement.Requirement.INPUT_REQUIRED) +@CapabilityDescription("Check for the existence of a file in S3 without attempting to download it. This processor can be " + + "used as a router for work flows that need to check on a file in S3 before proceeding with data processing") +@SeeAlso({PutS3Object.class, DeleteS3Object.class, ListS3.class, TagS3Object.class, DeleteS3Object.class, FetchS3Object.class}) +public class GetS3ObjectMetadata extends AbstractS3Processor { + public static final AllowableValue TARGET_ATTRIBUTES = new AllowableValue("attributes", "Attributes", "When " + + "selected, the metadata will be written to FlowFile attributes that have a user-configured prefix. For example: " + + "the standard S3 attribute Content-Type will be written as s3.Content-Type when using the default value. User-defined metadata " + + "will be included in the attributes added to the FlowFile"); + public static final AllowableValue TARGET_FLOWFILE_BODY = new AllowableValue("flowfile-content", "FlowFile Body", "Write " + + "the metadata to the FlowFile's content as JSON data."); + + public static final PropertyDescriptor METADATA_TARGET = new PropertyDescriptor.Builder() + .name("Metadata Target") + .description("This determines where the metadata will be written when it is found.") + .addValidator(Validator.VALID) + .required(true) + .allowableValues(TARGET_ATTRIBUTES, TARGET_FLOWFILE_BODY) + .defaultValue(TARGET_ATTRIBUTES) + .build(); + + public static final PropertyDescriptor METADATA_ATTRIBUTE_PREFIX = new PropertyDescriptor.Builder() + .name("Metadata Attribute Prefix") + .description("The prefix for FlowFile attributes generated from the S3 object metadata.") + .addValidator(StandardValidators.NON_EMPTY_EL_VALIDATOR) + .defaultValue("s3.") + .dependsOn(METADATA_TARGET, TARGET_ATTRIBUTES) + .required(true) + .build(); Review Comment: Done. -- 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]
