Couchbase Ruby Client
This repository contains the third generation of the official Couchbase SDK for Ruby (aka. SDKv3)
Support and Feedback
If you find an issue, please file it in our JIRA issue tracker. Also you are always welcome on our forum and Discord.
Please attach version information to the ticket/post. To obtain this information, use the following command:
$ ruby -r couchbase -e 'p Couchbase::VERSION'
Installation
The library has been tested with MRI 3.1, 3.2 and 3.3. Supported platforms are Linux and MacOS.
Add this line to your application's Gemfile:
gem "couchbase", "3.5.4"
And then execute:
$ bundle install
Or install it yourself as:
$ gem install couchbase
For some platforms we precompile binary packages. When, for some reason, binary packages cannot be used, pass
--platform=ruby
to the gem install
command (or check the specific_platform
and force_ruby_platform
options of Bundler).
In latter case, see the Development section for build dependencies.
Usage
Here are some basic steps demonstrating basic operations with data:
require "couchbase"
include Couchbase # include Couchbase module for brevity
# initialize library
cluster = Cluster.connect("couchbase://127.0.0.1", "Administrator", "password")
# open bucket and collection for data operations
bucket = cluster.bucket("my_bucket")
collection = bucket.default_collection
# update or insert the document
res = collection.upsert("foo", {"bar" => 42})
res.cas
#=> 22120998714646
# retrieve document from the collection
res = collection.get("foo")
res.cas
#=> 22120998714646
res.content
#=> {"bar"=>42}
# remove document
res = collection.remove("foo")
res.cas
#=> 47891154812182
# fetch top-3 cities by number of hotels in the collection
res = cluster.query("
SELECT city, COUNT(*) AS cnt FROM `travel-sample`
WHERE type = $type
GROUP BY city
ORDER BY cnt DESC
LIMIT 3",
Options::Query(named_parameters: {type: "hotel"}, metrics: true))
res.rows.each do |row|
p row
end
#=> {"city"=>"San Francisco", "cnt"=>132}
# {"city"=>"London", "cnt"=>67}
# {"city"=>"Paris", "cnt"=>64}
Development
After checking out the repo, run bin/setup
to install dependencies. You can also run bin/console
for an interactive
prompt that will allow you to experiment.
Compiling
Part of the library is written in C++, and requires both C and C++ compilers installed on the system. To configure the build
environment it uses cmake
. When these tools are installed, the build process is easy:
$ bundle exec rake compile
Testing
By default, a mock cluster is used for testing. If you wish to use a real cluster, you can define the
TEST_CONNECTION_STRING
environment variable (e.g. TEST_CONNECTION_STRING=couchbase://localhost
). You might also need to set the values for the TEST_USERNAME
, TEST_PASSWORD
, and TEST_BUCKET
environment variables.
To run the tests:
$ bundle exec rake test
Linting
We use the RuboCop linter. To run it:
$ bundle exec rubocop
Packaging
To build and install the Ruby gem (where VERSION
is the current version of the SDK):
$ gem build couchbase.gemspec
$ gem install couchbase-VERSION.snapshot.gem
Generate Documentation
To generate documentation yard
library is highly recommended.
$ gem install yard
The following steps will generate API reference for selected git tag:
$ rake doc
Now the API reference is accessible using a web browser (where VERSION
is the current version of the SDK)
$ firefox doc/couchbase-ruby-client-VERSION/index.html
License
The gem is available as open source under the terms of the Apache2 License.
Copyright 2011-Present Couchbase, Inc.
Licensed 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.