| /* |
| * 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.minifi.c2.cache.s3; |
| |
| import com.amazonaws.services.s3.AmazonS3; |
| import com.amazonaws.services.s3.model.S3Object; |
| import com.amazonaws.services.s3.model.S3ObjectSummary; |
| |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| |
| import org.apache.nifi.minifi.c2.api.ConfigurationProviderException; |
| import org.apache.nifi.minifi.c2.api.cache.WriteableConfiguration; |
| |
| public class S3WritableConfiguration implements WriteableConfiguration { |
| |
| private AmazonS3 s3; |
| private final S3Object s3Object; |
| private final String version; |
| |
| /** |
| * Creates a new S3 writable configuration. |
| * @param s3 An S3 {@link AmazonS3 client}. |
| * @param s3ObjectSummary The S3 object {@link S3ObjectSummary summary}. |
| * @param version The version of the configuration. |
| */ |
| public S3WritableConfiguration(AmazonS3 s3, S3ObjectSummary s3ObjectSummary, String version) { |
| |
| this.s3 = s3; |
| this.s3Object = s3.getObject(s3ObjectSummary.getBucketName(), s3ObjectSummary.getKey()); |
| this.version = version; |
| |
| } |
| |
| /** |
| * Creates a new S3 writable configuration. |
| * @param s3 An S3 {@link AmazonS3 client}. |
| * @param s3Object The S3 {@link S3Object object}. |
| * @param version The version of the configuration. |
| */ |
| public S3WritableConfiguration(AmazonS3 s3, S3Object s3Object, String version) { |
| |
| this.s3 = s3; |
| this.s3Object = s3Object; |
| this.version = version; |
| |
| } |
| |
| @Override |
| public String getVersion() { |
| return version; |
| } |
| |
| @Override |
| public boolean exists() { |
| return s3.doesObjectExist(s3Object.getBucketName(), s3Object.getKey()); |
| } |
| |
| @Override |
| public OutputStream getOutputStream() throws ConfigurationProviderException { |
| return new S3OutputStream(s3Object.getBucketName(), s3Object.getKey(), s3); |
| } |
| |
| @Override |
| public InputStream getInputStream() throws ConfigurationProviderException { |
| return s3Object.getObjectContent(); |
| } |
| |
| @Override |
| public String getName() { |
| return s3Object.getKey(); |
| } |
| |
| @Override |
| public String toString() { |
| return "FileSystemWritableConfiguration{objectKey=" + s3Object.getKey() |
| + ", version='" + version + "'}"; |
| } |
| |
| } |