public void deleteAllFiles(String folderName) {
List<S3ObjectSummary> fileList =
s3client.listObjects(bucketName, folderName).getObjectSummaries();
for (S3ObjectSummary file : fileList) {
s3client.deleteObject(bucketName, file.getKey());
}
}
@Override
public void deleteObject(String container, String object, Config config) {
super.deleteObject(container, object, config);
try {
client.deleteObject(container, object);
} catch (AmazonS3Exception awse) {
if (awse.getStatusCode() != HttpStatus.SC_NOT_FOUND) {
throw new StorageException(awse);
}
} catch (Exception e) {
throw new StorageException(e);
}
}
public void deleteUrlList(UrlList urlList) {
// first get hash key from dynamo db
try {
String s3Key = Hash.hashKey(urlList.getParentUrl());
s3client.deleteObject(bucketName, s3Key);
} catch (AmazonClientException e) {
System.out.println(
"S3UrlListDA : Exception while deleting document with id - " + urlList.getParentUrl());
e.printStackTrace();
} catch (NoSuchAlgorithmException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
@Override
public void remove(String noteId, AuthenticationInfo subject) throws IOException {
String key = user + "/" + "notebook" + "/" + noteId;
final ListObjectsRequest listObjectsRequest =
new ListObjectsRequest().withBucketName(bucketName).withPrefix(key);
try {
ObjectListing objects = s3client.listObjects(listObjectsRequest);
do {
for (S3ObjectSummary objectSummary : objects.getObjectSummaries()) {
s3client.deleteObject(bucketName, objectSummary.getKey());
}
objects = s3client.listNextBatchOfObjects(objects);
} while (objects.isTruncated());
} catch (AmazonClientException ace) {
throw new IOException("Unable to remove note in S3: " + ace, ace);
}
}
@Override
public F.Promise<Void> delete(String key) {
Promise<Void> promise = Futures.promise();
AmazonS3 amazonS3 = new AmazonS3Client(credentials);
DeleteObjectRequest request = new DeleteObjectRequest(bucketName, key);
request.withGeneralProgressListener(
progressEvent -> {
if (progressEvent.getEventType().isTransferEvent()) {
if (progressEvent.getEventType().equals(ProgressEventType.TRANSFER_COMPLETED_EVENT)) {
promise.success(null);
} else if (progressEvent
.getEventType()
.equals(ProgressEventType.TRANSFER_FAILED_EVENT)) {
promise.failure(new Exception("Delete failed"));
}
}
});
amazonS3.deleteObject(request);
return F.Promise.wrap(promise.future());
}
public void uploadFile(String s, String file) throws UnsupportedEncodingException {
InputStream inStream = new ByteArrayInputStream(s.getBytes("UTF-8"));
s3client.deleteObject(bucketName, MasterAddrFileName);
s3client.putObject(new PutObjectRequest(bucketName, file, inStream, new ObjectMetadata()));
}
public static void main(String[] args) throws IOException {
/*
* This credentials provider implementation loads your AWS credentials
* from a properties file at the root of your classpath.
*
* Important: Be sure to fill in your AWS access credentials in the
* AwsCredentials.properties file before you try to run this
* sample.
* http://aws.amazon.com/security-credentials
*/
AmazonS3 s3 = new AmazonS3Client(new ClasspathPropertiesFileCredentialsProvider());
String bucketName = "my-first-s3-bucket-" + UUID.randomUUID();
String key = "MyObjectKey";
System.out.println("===========================================");
System.out.println("Getting Started with Amazon S3");
System.out.println("===========================================\n");
try {
/*
* Create a new S3 bucket - Amazon S3 bucket names are globally unique,
* so once a bucket name has been taken by any user, you can't create
* another bucket with that same name.
*
* You can optionally specify a location for your bucket if you want to
* keep your data closer to your applications or users.
*/
System.out.println("Creating bucket " + bucketName + "\n");
s3.createBucket(bucketName);
/*
* List the buckets in your account
*/
System.out.println("Listing buckets");
for (Bucket bucket : s3.listBuckets()) {
System.out.println(" - " + bucket.getName());
}
System.out.println();
/*
* Upload an object to your bucket - You can easily upload a file to
* S3, or upload directly an InputStream if you know the length of
* the data in the stream. You can also specify your own metadata
* when uploading to S3, which allows you set a variety of options
* like content-type and content-encoding, plus additional metadata
* specific to your applications.
*/
System.out.println("Uploading a new object to S3 from a file\n");
s3.putObject(new PutObjectRequest(bucketName, key, createSampleFile()));
/*
* Download an object - When you download an object, you get all of
* the object's metadata and a stream from which to read the contents.
* It's important to read the contents of the stream as quickly as
* possibly since the data is streamed directly from Amazon S3 and your
* network connection will remain open until you read all the data or
* close the input stream.
*
* GetObjectRequest also supports several other options, including
* conditional downloading of objects based on modification times,
* ETags, and selectively downloading a range of an object.
*/
System.out.println("Downloading an object");
S3Object object = s3.getObject(new GetObjectRequest(bucketName, key));
System.out.println("Content-Type: " + object.getObjectMetadata().getContentType());
displayTextInputStream(object.getObjectContent());
/*
* List objects in your bucket by prefix - There are many options for
* listing the objects in your bucket. Keep in mind that buckets with
* many objects might truncate their results when listing their objects,
* so be sure to check if the returned object listing is truncated, and
* use the AmazonS3.listNextBatchOfObjects(...) operation to retrieve
* additional results.
*/
System.out.println("Listing objects");
ObjectListing objectListing =
s3.listObjects(new ListObjectsRequest().withBucketName(bucketName).withPrefix("My"));
for (S3ObjectSummary objectSummary : objectListing.getObjectSummaries()) {
System.out.println(
" - " + objectSummary.getKey() + " " + "(size = " + objectSummary.getSize() + ")");
}
System.out.println();
/*
* Delete an object - Unless versioning has been turned on for your bucket,
* there is no way to undelete an object, so use caution when deleting objects.
*/
System.out.println("Deleting an object\n");
s3.deleteObject(bucketName, key);
/*
* Delete a bucket - A bucket must be completely empty before it can be
* deleted, so remember to delete any objects from your buckets before
* you try to delete them.
*/
System.out.println("Deleting bucket " + bucketName + "\n");
s3.deleteBucket(bucketName);
} catch (AmazonServiceException ase) {
System.out.println(
"Caught an AmazonServiceException, which means your request made it "
+ "to Amazon S3, but was rejected with an error response for some reason.");
System.out.println("Error Message: " + ase.getMessage());
System.out.println("HTTP Status Code: " + ase.getStatusCode());
System.out.println("AWS Error Code: " + ase.getErrorCode());
System.out.println("Error Type: " + ase.getErrorType());
System.out.println("Request ID: " + ase.getRequestId());
} catch (AmazonClientException ace) {
System.out.println(
"Caught an AmazonClientException, which means the client encountered "
+ "a serious internal problem while trying to communicate with S3, "
+ "such as not being able to access the network.");
System.out.println("Error Message: " + ace.getMessage());
}
}
// 从bucket中删除名为name的object
public static void delObjectFromBucket(Bucket bucket, String name) {
conn.deleteObject(bucket.getName(), name);
}
