jp.classmethod.aws.gradle.s3.DeleteBucketTask.java Source code

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Here is the source code for jp.classmethod.aws.gradle.s3.DeleteBucketTask.java

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/*
 * 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 lombok.Getter;
import lombok.Setter;

import org.gradle.api.GradleException;
import org.gradle.api.internal.ConventionTask;
import org.gradle.api.tasks.TaskAction;

import com.amazonaws.AmazonClientException;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.model.ObjectListing;

public class DeleteBucketTask extends ConventionTask {

    @Getter
    @Setter
    String bucketName;

    @Getter
    @Setter
    boolean ifExists;

    @Getter
    @Setter
    boolean deleteObjects;

    public DeleteBucketTask() {
        setDescription("Create the Amazon S3 bucket.");
        setGroup("AWS");
    }

    @TaskAction
    public void deleteBucket() {
        // to enable conventionMappings feature
        String bucketName = getBucketName();
        boolean ifExists = isIfExists();

        if (bucketName == null) {
            throw new GradleException("bucketName is not specified");
        }

        AmazonS3PluginExtension ext = getProject().getExtensions().getByType(AmazonS3PluginExtension.class);
        AmazonS3 s3 = ext.getClient();

        if (ifExists == false || exists(s3)) {
            if (deleteObjects) {
                getLogger().info("Delete all S3 objects in bucket [{}]", bucketName);
                ObjectListing objectListing = s3.listObjects(bucketName);
                while (objectListing.getObjectSummaries().isEmpty() == false) {
                    objectListing.getObjectSummaries().forEach(summary -> {
                        getLogger().info(" => delete s3://{}/{}", bucketName, summary.getKey());
                        s3.deleteObject(bucketName, summary.getKey());
                    });
                    objectListing = s3.listNextBatchOfObjects(objectListing);
                }
            }
            s3.deleteBucket(bucketName);
            getLogger().info("S3 bucket {} is deleted", bucketName);
        } else {
            getLogger().debug("S3 bucket {} does not exist", bucketName);
        }
    }

    private boolean exists(AmazonS3 s3) {
        // to enable conventionMappings feature
        String bucketName = getBucketName();

        try {
            s3.getBucketLocation(bucketName);
            return true;
        } catch (AmazonClientException e) {
            return false;
        }
    }
}