// Copyright (C) 2011 Splunk Inc.
//
// Splunk Inc. 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 com.splunk.shuttl.archiver.filesystem.s3;
import static com.splunk.shuttl.archiver.LogFormatter.*;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URI;
import java.net.URLEncoder;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.log4j.Logger;
import com.splunk.shuttl.archiver.filesystem.ArchiveFileSystem;
import com.splunk.shuttl.archiver.filesystem.glacier.AWSCredentialsImpl;
import com.splunk.shuttl.archiver.filesystem.hadoop.HadoopArchiveFileSystem;
/**
* Factory for creating an AWS S3 or S3n back-end.
*/
public class S3ArchiveFileSystemFactory {
private static final Logger logger = Logger
.getLogger(S3ArchiveFileSystemFactory.class);
/**
* @return back-end running S3.
*/
public static ArchiveFileSystem createS3() {
return create("s3");
}
/**
* @return back-end running S3n.
*/
public static ArchiveFileSystem createS3n() {
return create("s3n");
}
private static ArchiveFileSystem create(String scheme) {
AWSCredentialsImpl credentials = AWSCredentialsImpl.create();
URI s3Uri = createS3UriForHadoopFileSystem(scheme, credentials);
try {
return new HadoopArchiveFileSystem(FileSystem.get(s3Uri,
new Configuration()));
} catch (IOException e) {
throw new RuntimeException(e);
}
}
public static URI createS3UriForHadoopFileSystem(String scheme,
AWSCredentialsImpl credentials) {
if (credentials.getS3Bucket().contains("_"))
logAndThrowException(credentials.getS3Bucket());
return URI.create(scheme + "://"
+ urlEncode(credentials.getAWSAccessKeyId()) + ":"
+ urlEncode(credentials.getAWSSecretKey()) + "@"
+ credentials.getS3Bucket());
}
private static void logAndThrowException(String s3BucketName) {
RuntimeException e = new RuntimeException(
"The s3 does not recommend underscores in the bucket name, "
+ "so neither does shuttl");
logger.error(did("tried to create a S3ArchiveFileSystem", e,
"a bucket name without any underscores", "exception", e, "s3bucket",
"The s3 does not recommend underscores in the bucket name, "
+ "so neither does shuttl"));
throw e;
}
private static String urlEncode(String s) {
try {
return URLEncoder.encode(s, "UTF-8");
} catch (UnsupportedEncodingException e) {
throw new RuntimeException(e);
}
}
}