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Commit fa512fa6f81c2e90cb20a450efb682f05bb73d7b

Authored by Victor Costa
1 parent 9c61af94
Exists in staging and in 4 other branches captcha_serpro_plugin, login-captcha, production, production-vendorized

virtuoso: added a plugin for integration with virtuoso

Showing 9 changed files with 226 additions and 0 deletions   Show diff stats
plugins/virtuoso/Gemfile 0 → 100644
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  1 +gem 'rdf'
  2 +gem 'rdf-virtuoso'
  3 +gem 'oai'
... ...
plugins/virtuoso/controllers/virtuoso_plugin_admin_controller.rb 0 → 100644
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  1 +class VirtuosoPluginAdminController < AdminController
  2 +
  3 + def index
  4 + settings = params[:settings]
  5 + settings ||= {}
  6 + @settings = Noosfero::Plugin::Settings.new(environment, VirtuosoPlugin, settings)
  7 + @harvest_running = VirtuosoPlugin::DspaceHarvest.new(environment).find_job.present?
  8 +
  9 + if request.post?
  10 + @settings.save!
  11 + session[:notice] = 'Settings succefully saved.'
  12 + redirect_to :action => 'index'
  13 + end
  14 + end
  15 +
  16 + def force_harvest
  17 + harvest = VirtuosoPlugin::DspaceHarvest.new(environment)
  18 + harvest.start
  19 + session[:notice] = _('Harvest started')
  20 + redirect_to :action => :index
  21 + end
  22 +
  23 +end
... ...
plugins/virtuoso/lib/virtuoso_plugin.rb 0 → 100644
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  1 +class VirtuosoPlugin < Noosfero::Plugin
  2 +
  3 + def self.plugin_name
  4 + "Virtuoso integration"
  5 + end
  6 +
  7 + def self.plugin_description
  8 + _('Virtuoso integration')
  9 + end
  10 +
  11 +end
... ...
plugins/virtuoso/lib/virtuoso_plugin/dspace_harvest.rb 0 → 100644
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  1 +#inspired by https://github.com/code4lib/ruby-oai/blob/master/lib/oai/harvester/harvest.rb
  2 +class VirtuosoPlugin::DspaceHarvest
  3 +
  4 + DC_CONVERSION = [:title, :creator, :subject, :description, :date, :type, :identifier, :language, :rights, :format]
  5 +
  6 + def initialize(environment)
  7 + @environment = environment
  8 + end
  9 +
  10 + def settings
  11 + @settings ||= Noosfero::Plugin::Settings.new(@environment, VirtuosoPlugin)
  12 + end
  13 +
  14 + def dspace_client
  15 + @dspace_client ||= OAI::Client.new("#{settings.dspace_uri}/oai/request")
  16 + end
  17 +
  18 + def virtuoso_client
  19 + @virtuoso_client ||= RDF::Virtuoso::Repository.new("#{settings.virtuoso_uri}/sparql", :update_uri => "#{settings.virtuoso_uri}/sparql-auth", :username => settings.virtuoso_username, :password => settings.virtuoso_password, :auth_method => 'digest', :timeout => 30)
  20 + end
  21 +
  22 + def triplify(record)
  23 + metadata = VirtuosoPlugin::DublinCoreMetadata.new(record.metadata)
  24 + puts "triplify #{record.header.identifier}"
  25 +
  26 + DC_CONVERSION.each do |c|
  27 + values = [metadata.send(c)].flatten.compact
  28 + values.each do |value|
  29 + query = RDF::Virtuoso::Query.insert_data([RDF::URI.new(metadata.identifier), RDF::URI.new("http://purl.org/dc/elements/1.1/#{c}"), value]).graph(RDF::URI.new(settings.dspace_uri))
  30 + virtuoso_client.insert(query)
  31 + end
  32 + end
  33 + end
  34 +
  35 + def run
  36 + harvest_time = Time.now.utc
  37 + params = settings.last_harvest ? {:from => settings.last_harvest.utc} : {}
  38 + puts "starting harvest #{params}"
  39 + begin
  40 + records = dspace_client.list_records(params)
  41 + records.each do |record|
  42 + triplify(record)
  43 + end
  44 + rescue Exception => ex
  45 + puts ex.to_s
  46 + end
  47 + settings.last_harvest = harvest_time
  48 + settings.save!
  49 + puts "ending harvest #{harvest_time}"
  50 + end
  51 +
  52 + def start
  53 + if find_job.empty?
  54 + job = VirtuosoPlugin::DspaceHarvest::Job.new(@environment.id)
  55 + Delayed::Job.enqueue(job)
  56 + end
  57 + end
  58 +
  59 + def find_job
  60 + Delayed::Job.where(:handler => "--- !ruby/struct:VirtuosoPlugin::DspaceHarvest::Job\nenvironment_id: #{@environment.id}\n")
  61 + end
  62 +
  63 + class Job < Struct.new(:environment_id)
  64 + def perform
  65 + environment = Environment.find(environment_id)
  66 + harvest = VirtuosoPlugin::DspaceHarvest.new(environment)
  67 + harvest.run
  68 + end
  69 + end
  70 +
  71 +end
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plugins/virtuoso/lib/virtuoso_plugin/dublin_core_metadata.rb 0 → 100644
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  1 +class VirtuosoPlugin::DublinCoreMetadata
  2 +
  3 + include OAI::XPath
  4 +
  5 + attr_accessor :date, :title, :creator, :subject, :description, :date, :type, :identifier, :language, :rights, :format
  6 +
  7 + def initialize(element)
  8 + @title = xpath(element, './/dc:title')
  9 + @creator = xpath(element, './/dc:creator')
  10 + @subject = xpath_all(element, './/dc:subject').map(&:text)
  11 + @description = xpath(element, './/dc:description')
  12 + @date = xpath_all(element, './/dc:date').map(&:text)
  13 + @type = xpath(element, './/dc:type')
  14 + @identifier = xpath(element, './/dc:identifier')
  15 + @language = xpath(element, './/dc:language')
  16 + @rights = xpath_all(element, './/dc:rights').map(&:text)
  17 + @format = xpath(element, './/dc:format')
  18 + end
  19 +
  20 +end
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plugins/virtuoso/test/functional/virtuoso_plugin_admin_controller_test.rb 0 → 100644
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  1 +require File.dirname(__FILE__) + '/../test_helper'
  2 +
  3 +class VirtuosoPluginAdminControllerTest < ActionController::TestCase
  4 +
  5 + def setup
  6 + @environment = Environment.default
  7 + @profile = create_user('profile').person
  8 + login_as(@profile.identifier)
  9 + end
  10 +
  11 + attr_reader :environment
  12 +
  13 + should 'save virtuoso plugin settings' do
  14 + post :index, :settings => {'virtuoso_uri' => 'http://virtuoso.noosfero.com',
  15 + 'virtuoso_username' => 'username',
  16 + 'virtuoso_password' => 'password',
  17 + 'dspace_uri' => 'http://dspace.noosfero.com'}
  18 + @settings = Noosfero::Plugin::Settings.new(environment.reload, VirtuosoPlugin)
  19 + assert_equal 'http://virtuoso.noosfero.com', @settings.settings[:virtuoso_uri]
  20 + assert_equal 'username', @settings.settings[:virtuoso_username]
  21 + assert_equal 'password', @settings.settings[:virtuoso_password]
  22 + assert_equal 'http://dspace.noosfero.com', @settings.settings[:dspace_uri]
  23 + assert_redirected_to :action => 'index'
  24 + end
  25 +
  26 + should 'redirect to index after save' do
  27 + post :index, :settings => {"virtuoso_uri" => 'http://virtuoso.noosfero.com'}
  28 + assert_redirected_to :action => 'index'
  29 + end
  30 +
  31 + should 'create delayed job to start harvest on force action' do
  32 + harvest = VirtuosoPlugin::DspaceHarvest.new(environment)
  33 + assert !harvest.find_job.present?
  34 + get :force_harvest
  35 + assert harvest.find_job.present?
  36 + end
  37 +
  38 +end
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plugins/virtuoso/test/test_helper.rb 0 → 100644
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  1 +require File.dirname(__FILE__) + '/../../../test/test_helper'
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plugins/virtuoso/test/unit/dspace_harvest_test.rb 0 → 100644
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  1 +require File.dirname(__FILE__) + '/../test_helper'
  2 +
  3 +class DspaceHarvestTest < ActiveSupport::TestCase
  4 +
  5 + def setup
  6 + @environment = Environment.default
  7 + end
  8 +
  9 + attr_reader :environment
  10 +
  11 + should 'create delayed job when start' do
  12 + harvest = VirtuosoPlugin::DspaceHarvest.new(environment)
  13 + assert !harvest.find_job.present?
  14 + harvest.start
  15 + assert harvest.find_job.present?
  16 + end
  17 +
  18 + should 'not duplicate harvest job' do
  19 + harvest = VirtuosoPlugin::DspaceHarvest.new(environment)
  20 + assert_difference "harvest.find_job.count", 1 do
  21 + 5.times { harvest.start }
  22 + end
  23 + end
  24 +
  25 +end
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plugins/virtuoso/views/virtuoso_plugin_admin/index.html.erb 0 → 100644
  Diff comments   View file @fa512fa
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  1 +<h1><%= _('Virtuoso settings')%></h1>
  2 +
  3 +<%= form_for(:settings) do |f| %>
  4 +
  5 + <strong>
  6 + <%= labelled_form_field _('Virtuoso URL:'), f.text_field(:virtuoso_uri) %>
  7 + <%= labelled_form_field _('Virtuoso Username:'), f.text_field(:virtuoso_username) %>
  8 + <%= labelled_form_field _('Virtuoso Password:'), f.password_field(:virtuoso_password) %>
  9 + <%= labelled_form_field _('DSpace URL:'), f.text_field(:dspace_uri) %>
  10 + </strong>
  11 +
  12 + <% button_bar do %>
  13 + <%= submit_button(:save, _('Save'), :cancel => {:controller => 'plugins', :action => 'index'}) %>
  14 + <% end %>
  15 +
  16 +<% end %>
  17 +
  18 +<hr/>
  19 +<div class="harvest">
  20 + <% if @settings.last_harvest %>
  21 + <div class="date">
  22 + <span class="label"><strong><%= _('Last execution:') %></strong></span>
  23 + <span class="value"><%= time_ago_as_sentence @settings.last_harvest %></span>
  24 + </div>
  25 +<% end %>
  26 + <br/>
  27 + <div class="actions">
  28 + <% if @harvest_running %>
  29 + <%= _('Running...') %>
  30 + <% else %>
  31 + <%= button :next, _('Force harvest'), :action => :force_harvest %>
  32 + <% end %>
  33 + </div>
  34 +</div>
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