qfs

ruby-qfs

Ruby bindings for QFS.

Installation

Add this line to your application's Gemfile:

gem 'qfs'

And then execute:

$ bundle

Or install it yourself as:

$ gem install qfs

Usage

The entrypoint to QFS with these bindings is the Qfs::Client object. You can view the entire API in the documentation (TODO update this when open sourced) and see examples in "test/qfs_test.rb".

Testing

You can run the tests on an existing instance of QFS. By default, an local instance running on port 10000 is assumed, but you can specify a different location using environment variables.

rake test

By default, a stock QFS instance will likely have restricted permissions. You may have to connect to QFS as root and manually chown/chmod the root to something that the user running the tests can access.

Environment Variables for Tests

• QFS_TEST_PATH: The directory in QFS to create and do all test-related operations in.
• QFS_TEST_HOST: The host running QFS.
• QFS_TEST_PORT: The port that QFS is running on.

You can also enable debugging output by setting the environment variable RUBY_QFS_TRACE.

export RUBY_QFS_TRACE=1

Caveats

stat can return stale data after modifications

The behavior of the C API results in a stat call using stale data if modifications were made to a file since the connection was opened. This can be avoided by opening and immediately closing the file that is being stat'ed. You can enable this behavior by setting the refresh option to true:

client.stat("/path/to/file", refresh: true)

Be aware that this may come with a performance penalty, so it may be better to use this option only when necessary.