Java tutorial
/* * Copyright 2015-2016 the original author or authors. * * 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. */ package jp.classmethod.aws.gradle.s3; import java.io.File; import lombok.Getter; import lombok.Setter; import org.gradle.api.internal.ConventionTask; import com.amazonaws.services.s3.AmazonS3; import com.amazonaws.services.s3.model.AmazonS3Exception; import com.amazonaws.services.s3.model.ObjectMetadata; public abstract class AbstractAmazonS3FileUploadTask extends ConventionTask { @Getter @Setter private String bucketName; @Getter @Setter private String key; @Getter @Setter private File file; @Getter @Setter private ObjectMetadata objectMetadata; @Getter @Setter private String resourceUrl; @Getter @Setter private boolean overwrite = false; protected ObjectMetadata existingObjectMetadata() { // to enable conventionMappings feature String bucketName = getBucketName(); String key = getKey(); AmazonS3PluginExtension ext = getProject().getExtensions().getByType(AmazonS3PluginExtension.class); AmazonS3 s3 = ext.getClient(); try { // to enable conventionMapping, you must reference field via getters return s3.getObjectMetadata(bucketName, key); } catch (AmazonS3Exception e) { if (e.getStatusCode() != 404) { throw e; } } return null; } protected boolean exists() { return existingObjectMetadata() != null; } }