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/*
* Copyright 2014 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file 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.
*/
import java.io.File;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import com.amazonaws.AmazonClientException;
import com.amazonaws.AmazonServiceException;
import com.amazonaws.auth.AWSCredentialsProvider;
import com.amazonaws.auth.profile.ProfileCredentialsProvider;
import com.amazonaws.auth.profile.ProfilesConfigFile;
import com.amazonaws.services.ec2.AmazonEC2;
import com.amazonaws.services.ec2.AmazonEC2Client;
import com.amazonaws.services.ec2.model.AvailabilityZone;
import com.amazonaws.services.ec2.model.DescribeAvailabilityZonesResult;
import com.amazonaws.services.ec2.model.DescribeInstancesResult;
import com.amazonaws.services.ec2.model.Instance;
import com.amazonaws.services.ec2.model.Reservation;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.AmazonS3Client;
import com.amazonaws.services.s3.iterable.S3Objects;
import com.amazonaws.services.s3.model.Bucket;
import com.amazonaws.services.s3.model.S3ObjectSummary;
/**
* This class is a starting point for working with the AWS SDK for Java, and
* shows how to make a few simple requests to Amazon EC2 and Amazon S3.
*
* Before you run this code, be sure to fill in your AWS security credentials
* in the .aws/credentials file under your home directory.
*
* If you don't have an Amazon Web Services account, you can get started for free:
* http://aws.amazon.com/free
*
* For lots more information on using the AWS SDK for Java, including information on
* high-level APIs and advanced features, check out the AWS SDK for Java Developer Guide:
* http://docs.aws.amazon.com/AWSSdkDocsJava/latest/DeveloperGuide/welcome.html
*
* Stay up to date with new features in the AWS SDK for Java by following the
* AWS Java Developer Blog:
* https://java.awsblog.com
*/
public class AwsSdkSample {
/*
* Important: Be sure to fill in your AWS access credentials in the
* .aws/credentials file under your home directory
* before you run this sample.
* http://aws.amazon.com/security-credentials
*/
static AmazonEC2 ec2;
static AmazonS3 s3;
/**
* The only information needed to create a client are security credentials -
* your AWS Access Key ID and Secret Access Key. All other
* configuration, such as the service endpoints have defaults provided.
*
* Additional client parameters, such as proxy configuration, can be specified
* in an optional ClientConfiguration object when constructing a client.
*
* @see com.amazonaws.auth.BasicAWSCredentials
* @see com.amazonaws.auth.PropertiesCredentials
* @see com.amazonaws.ClientConfiguration
*/
private static void init() throws Exception {
/*
* ProfileCredentialsProvider loads AWS security credentials from a
* .aws/config file in your home directory.
*
* These same credentials are used when working with other AWS SDKs and the AWS CLI.
*
* You can find more information on the AWS profiles config file here:
* http://docs.aws.amazon.com/cli/latest/userguide/cli-chap-getting-started.html
*/
File configFile = new File(System.getProperty("user.home"), ".aws/credentials");
AWSCredentialsProvider credentialsProvider = new ProfileCredentialsProvider(
new ProfilesConfigFile(configFile), "default");
if (credentialsProvider.getCredentials() == null) {
throw new RuntimeException("No AWS security credentials found:\n"
+ "Make sure you've configured your credentials in: " + configFile.getAbsolutePath() + "\n"
+ "For more information on configuring your credentials, see "
+ "http://docs.aws.amazon.com/cli/latest/userguide/cli-chap-getting-started.html");
}
ec2 = new AmazonEC2Client(credentialsProvider);
s3 = new AmazonS3Client(credentialsProvider);
}
public static void main(String[] args) throws Exception {
System.out.println("===========================================");
System.out.println("Welcome to the AWS Java SDK!");
System.out.println("===========================================");
init();
try {
/*
* The Amazon EC2 client allows you to easily launch and configure
* computing capacity in AWS datacenters.
*
* In this sample, we use the EC2 client to list the availability zones
* in a region, and then list the instances running in those zones.
*/
DescribeAvailabilityZonesResult availabilityZonesResult = ec2.describeAvailabilityZones();
List<AvailabilityZone> availabilityZones = availabilityZonesResult.getAvailabilityZones();
System.out.println("You have access to " + availabilityZones.size() + " availability zones:");
for (AvailabilityZone zone : availabilityZones) {
System.out.println(" - " + zone.getZoneName() + " (" + zone.getRegionName() + ")");
}
DescribeInstancesResult describeInstancesResult = ec2.describeInstances();
Set<Instance> instances = new HashSet<Instance>();
for (Reservation reservation : describeInstancesResult.getReservations()) {
instances.addAll(reservation.getInstances());
}
System.out.println("You have " + instances.size() + " Amazon EC2 instance(s) running.");
/*
* The Amazon S3 client allows you to manage and configure buckets
* and to upload and download data.
*
* In this sample, we use the S3 client to list all the buckets in
* your account, and then iterate over the object metadata for all
* objects in one bucket to calculate the total object count and
* space usage for that one bucket. Note that this sample only
* retrieves the object's metadata and doesn't actually download the
* object's content.
*
* In addition to the low-level Amazon S3 client in the SDK, there
* is also a high-level TransferManager API that provides
* asynchronous management of uploads and downloads with an easy to
* use API:
* http://docs.aws.amazon.com/AWSJavaSDK/latest/javadoc/com/amazonaws/services/s3/transfer/TransferManager.html
*/
List<Bucket> buckets = s3.listBuckets();
System.out.println("You have " + buckets.size() + " Amazon S3 bucket(s).");
if (buckets.size() > 0) {
Bucket bucket = buckets.get(0);
long totalSize = 0;
long totalItems = 0;
/*
* The S3Objects and S3Versions classes provide convenient APIs
* for iterating over the contents of your buckets, without
* having to manually deal with response pagination.
*/
for (S3ObjectSummary objectSummary : S3Objects.inBucket(s3, bucket.getName())) {
totalSize += objectSummary.getSize();
totalItems++;
}
System.out.println("The bucket '" + bucket.getName() + "' contains "+ totalItems + " objects "
+ "with a total size of " + totalSize + " bytes.");
}
} catch (AmazonServiceException ase) {
/*
* AmazonServiceExceptions represent an error response from an AWS
* services, i.e. your request made it to AWS, but the AWS service
* either found it invalid or encountered an error trying to execute
* it.
*/
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) {
/*
* AmazonClientExceptions represent an error that occurred inside
* the client on the local host, either while trying to send the
* request to AWS or interpret the response. For example, if no
* network connection is available, the client won't be able to
* connect to AWS to execute a request and will throw an
* AmazonClientException.
*/
System.out.println("Error Message: " + ace.getMessage());
}
}
}
