By default, it will generate hostname using the aws region passed to the
constructor.

This will allow for easier testing, since you can just spin up a local
minio (or other s3-compatible storage service) instance and point the
application at that for the storage mechanism.

It will also allow for storing lfs objects on-prem.

Change-Id: I2566b1fcce58f3d306ddd23a8da702ef5a451c7b
Signed-off-by: Pat Long <pllong@arista.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

This is the format given by the Eclipse legal doc generator [1].

[1] https://www.eclipse.org/projects/tools/documentation.php?id=technology.jgit

Bug: 548298
Change-Id: I8d8cabc998ba1b083e3f0906a8d558d391ffb6c4
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

Since [1] the gerrit project includes jgit as a submodule, and has this
warning enabled, resulting in 100s of warnings in the console.

Also enable the warning here, and fix them.

At the same time, add missing braces around adjacent and nearby one-line
blocks.

[1] https://gerrit-review.googlesource.com/c/gerrit/+/227897

Change-Id: I81df3fc7ed6eedf6874ce1a3bedfa727a1897e4c
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

Change-Id: Ie492406005be56ccaf4dfb385ae376636404816d
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

Change-Id: I3b748620f067582afef20f144feebe40d0332be2
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

Change-Id: I6714fc3666e1bced22abba94ceb700477349586e
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

Change-Id: I0c52536ebeeb8e71d95c6420f6db7055ff082dfa
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

Instead of hard-coding the charset strings "US-ASCII", "UTF-8", and
"ISO-8859-1", use the corresponding constants from StandardCharsets.

UnsupportedEncodingException is not thrown when the StandardCharset
constants are used, so remove the now redundant handling.

Because the encoding names are no longer hard-coded strings, also
remove redundant $NON-NLS warning suppressions.

Also replace existing usages of the constants with static imports.

Change-Id: I0a4510d3d992db5e277f009a41434276f95bda4e
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

Since the introduction of generic type parameter inference in Java 7,
it's not necessary to explicitly specify the type of generic parameters.

Enable the warning in Eclipse, and fix all occurrences.

Change-Id: I9158caf1beca5e4980b6240ac401f3868520aad0
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

Otherwise these methods may produce unexpected results if used for
strings that are intended to be interpreted locale independently.
Examples are programming language identifiers, protocol keys, and HTML
tags. For instance, "TITLE".toLowerCase() in a Turkish locale returns
"t\u0131tle", where '\u0131' is the LATIN SMALL LETTER DOTLESS I
character.

See
https://docs.oracle.com/javase/8/docs/api/java/lang/String.html#toLowerCase--
http://blog.thetaphi.de/2012/07/default-locales-default-charsets-and.html

Bug: 511238
Change-Id: Id8d8f37d84d62239c918b81f8d883ed798d87656
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

We ignored the returned concatenation of host name and port number. Fix
this and use a StringBuilder to avoid creation of unnecessary String
objects.

Change-Id: I61fac639d4a4c95412eb41a0f9131d0c38aca794
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

Add a storage implementation storing large objects in Amazon S3.
The AmazonS3Repository pre-signs download and upload requests.

AWS access and secret key are expected to be in the
$HOME/.aws/credentials file in the following format:

[default]
  accessKey = ...
  secretKey = ...

Use AWS version 4 request signing [1] because it is more secure and
supported by all regions. The version 3 signing is not supported in
newer regions.

In follow up changes we should:

- implement getVerifyAction() and do actual verification. Subclasses of
S3Repository can implement caching for object meta data (size) in order
to avoid extra roundtrips to S3. Verification should ensure that meta
data store and content of S3 storage are in sync

- HEAD request used in S3Repository.getSize() seems to always return
Content-length 0 in contrast to the documentation [2]. So getSize() does
detect if the object exists in S3 or not but in case the object exists
it always returns size 0

[1] http://docs.aws.amazon.com/general/latest/gr/signature-version-4.html
[2] https://forums.aws.amazon.com/thread.jspa?threadID=223616

Change-Id: Ic47f094928a259e5264c92b3aacf6d90210907a8
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Signed-off-by: Sasa Zivkov <sasa.zivkov@sap.com>