Gnista is a wrapper for the database/hashstore Sparkey written for Ruby. Gnista packs all the native features of Sparkey into a shiny red package, easy to use.
You will need Sparkey, obviously. It's really easy to install. Head over to https://github.com/spotify/sparkey and install it, I'll wait..
Now, add this line to your application's Gemfile:
gem 'gnista'
And then execute:
$ bundle
Or install it yourself as:
$ gem install gnista
You can read about Sparkey here.
require 'gnista'
logwriter = Gnista::Logwriter.new "mylog.log" # no compression
logwriter = Gnista::Logwriter.new "mylog.log", 4000 # 4k compression block size
logwriter = Gnista::Logwriter.new "mylog.log", :append # append to existing log
logwriter.logpath # => "mylog.log"
logwriter.put "key", "value" # put entry
logwriter["key"] = "value"
logwriter.del "key" # delete entry
logwriter.flush
logwriter.write_batch do
logwriter["key1"] = "value1"
logwriter["key2"] = "value2"
end
logreader = Gnista::Logreader.new "mylog.log"
logreader.logpath # => "mylog.log"
logreader.each {|key,value,type| puts key, value, type }
# => "key", "value"/nil, :put/:delete
logreader.maxkeylen # largest key length
logreader.maxkeylen # largest value length
Gnista::Hash.write "mylog.hash", "mylog.log" # no preferred hash size
Gnista::Hash.write "mylog.hash", "mylog.log", 4 # 32 bit murmurhash3_x86_32
Gnista::Hash.write "mylog.hash", "mylog.log", 8 # lower 64-bit part of murmurhash3_x64_128
hash = Gnista::Hash.new "mylog.hash", "mylog.log"
logwriter.hashpath # => "mylog.hash"
logwriter.logpath # => "mylog.log"
hash.each {|key,value| puts key, value }
hash.get "key" # => "value" or nil
hash["key"]
hash.maxkeylen
hash.maxkeylen
hash.length
hash.collisions
hash.empty?
hash.include? "key"
hash.keys # => ["key1", "key2"]
hash.values # => ["value1", "value2"]
# Don't forget to close!
logwriter.close
logreader.close
hash.close
logwriter.open? || logreader.open? || hash.open? # => falseBoth Logreaderand Hash mixin Enumerable.
Step-by-step:
- Fork it
- Create your feature branch (
git checkout -b my-new-feature) - Write some code
- Build and test
- Commit your changes (
git commit -am 'Add some feature') - Push to the branch (
git push origin my-new-feature) - Create new Pull Request
Use the following commands to build the native extensions and test:
$ rake make
$ rake test