S3Proxy
=======
S3Proxy allows applications using the
[S3 API](https://en.wikipedia.org/wiki/Amazon_S3#S3_API_and_competing_services)
to access other object stores,
e.g., EMC Atmos, Microsoft Azure, OpenStack Swift.  It also allows local
testing of S3 without the cost or latency associated with using AWS.

Features
--------
* create, remove, and list buckets (including user-specified regions)
* put, get, delete, and list objects
* copy objects and delete multiple objects (emulated operations)
* store and retrieve object metadata, including user metadata
* authorization via AWS signature v2 (including pre-signed URLs) or anonymous access
* listen on HTTP or HTTPS

Supported object stores:

* atmos
* aws-s3
* azureblob
* filesystem (on-disk storage)
* google-cloud-storage
* hpcloud-objectstorage
* openstack-swift
* rackspace-cloudfiles-uk and rackspace-cloudfiles-us
* s3
* swift and swift-keystone (legacy)
* transient (in-memory storage)

Installation
------------
Users can [download releases](https://github.com/andrewgaul/s3proxy/releases)
from GitHub.  One can also build the project by running `mvn package` which
produces a binary at `target/s3proxy`.  S3Proxy requires Java 7 to run.

Examples
--------
Linux and Mac OS X users can run S3Proxy via the executable jar:

```
chmod +x s3proxy
s3proxy --properties s3proxy.conf
```

Windows users must explicitly invoke java:

```
java -jar s3proxy --properties s3proxy.conf
```

Users can configure S3Proxy via a properties file.  An example using Rackspace
CloudFiles (based on OpenStack Swift) as the backing store:

```
s3proxy.endpoint=http://127.0.0.1:8080
s3proxy.authorization=aws-v2
s3proxy.identity=local-identity
s3proxy.credential=local-credential
jclouds.provider=rackspace-cloudfiles-us
jclouds.identity=remote-identity
jclouds.credential=remote-credential
```

Another example using the local file system as the backing store with anonymous
access:

```
s3proxy.authorization=none
s3proxy.endpoint=http://127.0.0.1:8080
jclouds.provider=filesystem
jclouds.identity=identity
jclouds.credential=credential
jclouds.filesystem.basedir=/tmp
```

S3Proxy can listen on HTTPS by setting the endpoint and
[configuring a keystore](http://wiki.eclipse.org/Jetty/Howto/Configure_SSL#Generating_Keys_and_Certificates_with_JDK_keytool).
An example:

```
s3proxy.endpoint=https://127.0.0.1:8080
s3proxy.keystore-path=keystore.jks
s3proxy.keystore-password=password
```

Users can also set other Java,
[jclouds](https://github.com/jclouds/jclouds/blob/master/core/src/main/java/org/jclouds/Constants.java),
and [S3Proxy](https://github.com/andrewgaul/s3proxy/blob/master/src/main/java/org/gaul/s3proxy/S3ProxyConstants.java)
properties.

Limitations
-----------
S3Proxy does not support:

* single-part uploads larger than 2 GB ([jclouds issue](https://issues.apache.org/jira/browse/JCLOUDS-264))
* multi-part uploads
* POST uploads
* bucket and object ACLs ([jclouds issue](https://issues.apache.org/jira/browse/JCLOUDS-660))
* object metadata with filesystem provider ([jclouds issue](https://issues.apache.org/jira/browse/JCLOUDS-658))
* object server-side encryption
* object versioning

References
----------
Apache [jclouds](http://jclouds.apache.org/) provides object store support for
S3Proxy.
Ceph [s3-tests](https://github.com/ceph/s3-tests) help maintain and improve
compatibility with the S3 API.
[fake-s3](https://github.com/jubos/fake-s3) provides functionality similar to
S3Proxy when using the filesystem provider.
Another project named [s3proxy](https://github.com/abustany/s3proxy) provides
HTTP access to non-S3-aware applications.

License
-------
Copyright (C) 2014 Andrew Gaul

Licensed under the Apache License, Version 2.0