balazsgerner commented on code in PR #8368: URL: https://github.com/apache/nifi/pull/8368#discussion_r1489639335
########## nifi-nar-bundles/nifi-aws-bundle/nifi-aws-processors/src/main/java/org/apache/nifi/processors/aws/s3/S3FileResourceService.java: ########## @@ -0,0 +1,153 @@ +/* + * 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.SdkClientException; +import com.amazonaws.auth.AWSCredentialsProvider; +import com.amazonaws.regions.Region; +import com.amazonaws.services.s3.AmazonS3; +import com.amazonaws.services.s3.AmazonS3Client; +import com.amazonaws.services.s3.model.S3Object; +import com.github.benmanes.caffeine.cache.Cache; +import com.github.benmanes.caffeine.cache.Caffeine; +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.annotation.documentation.UseCase; +import org.apache.nifi.annotation.lifecycle.OnDisabled; +import org.apache.nifi.annotation.lifecycle.OnEnabled; +import org.apache.nifi.components.PropertyDescriptor; +import org.apache.nifi.context.PropertyContext; +import org.apache.nifi.controller.AbstractControllerService; +import org.apache.nifi.controller.ConfigurationContext; +import org.apache.nifi.fileresource.service.api.FileResource; +import org.apache.nifi.fileresource.service.api.FileResourceService; +import org.apache.nifi.processor.exception.ProcessException; +import org.apache.nifi.processors.aws.credentials.provider.service.AWSCredentialsProviderService; +import org.apache.nifi.processors.aws.util.RegionUtilV1; + +import java.util.List; +import java.util.Map; + +import static org.apache.nifi.processors.aws.AbstractAWSCredentialsProviderProcessor.AWS_CREDENTIALS_PROVIDER_SERVICE; +import static org.apache.nifi.processors.aws.util.RegionUtilV1.resolveRegion; +import static org.apache.nifi.util.StringUtils.isBlank; + +@Tags({"Amazon", "S3", "AWS", "file", "resource"}) +@SeeAlso({FetchS3Object.class}) +@CapabilityDescription("Provides an Amazon Web Services (AWS) S3 file resource for other components.") +@UseCase( + description = "Fetch a specific file from S3. " + + "The service provides higher performance compared to fetch processors when the data should be moved between different storages without any transformation.", + configuration = """ + "Bucket" = "${s3.bucket}" + "Name" = "${filename}" + + The "Region" property must be set to denote the S3 region that the Bucket resides in. + If the flow being built is to be reused elsewhere, it's a good idea to parameterize this property by setting it to something like #{S3_REGION}. Review Comment: Actually, I was trying to copy this sentence from the `FetchS3` processor's documentation, but it seems to be a bit of an overkill for me too, so I will remove it. -- 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: issues-unsubscr...@nifi.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
