Class: NetworkCsvMaker

Inherits:
Object
  • Object
show all
Defined in:
app/workers/concerns/network_csv_maker.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ NetworkCsvMaker

Returns a new instance of NetworkCsvMaker.



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# File 'app/workers/concerns/network_csv_maker.rb', line 6

def initialize
  # Defining the attributes
  @node_attributes = %w{node type label status created_at updated_at}
  @edge_attributes = %w{source source_type target target_type relation_type value created_at updated_at}
end

Instance Method Details

#create_network_snapshot ⇒ Object 



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# File 'app/workers/concerns/network_csv_maker.rb', line 116

def create_network_snapshot
  network = Network.new
  create_snapshot(network)
end

#create_snapshot(network) ⇒ Object 



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# File 'app/workers/concerns/network_csv_maker.rb', line 108

def create_snapshot(network)
  nodes_file = nodes_snapshot(network.created_at)
  edges_file = edges_snapshot(network.created_at)
  network.node_list.attach(io: File.open(nodes_file), filename: 'network_nodes.csv')
  network.edge_list.attach(io: File.open(edges_file), filename: 'network_edges.csv')
  network.save
end

#edges_snapshot(created_at) ⇒ Object 



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# File 'app/workers/concerns/network_csv_maker.rb', line 90

def edges_snapshot(created_at)
  # Going over the edges
  edges_file = './tmp/network_edges.csv'

  CSV.open(edges_file, 'wb', headers: true) do |csv|
    csv << @edge_attributes

    find_records(RecsysDatum, created_at) do |edge|
      source = edge.sourceable_node
      target = edge.targetable_node
      next if source.nil? || target.nil?

      csv << make_edge(source, target, edge)
    end
  end
  edges_file
end

#find_records(c, created_at, &block) ⇒ Object 



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# File 'app/workers/concerns/network_csv_maker.rb', line 24

def find_records(c, created_at, &block)
  # Skill, Ressource and Interest currently do not have a created_at field
  return c.find_each if [Skill, Ressource, Interest].include?(c)

  if created_at.nil?
    c.find_each(&block)
  else
    c.where('created_at <= ?', created_at).or(c.where('created_at is null')).find_each(&block)
  end
end

#make_edge(source, target, edge) ⇒ Object 



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# File 'app/workers/concerns/network_csv_maker.rb', line 20

def make_edge(source, target, edge)
  [make_node_id(source), source.class.name, make_node_id(target), target.class.name, edge.relation_type, edge.value, edge.created_at, edge.updated_at]
end

#make_node(node, label, status, created_at, updated_at) ⇒ Object 



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# File 'app/workers/concerns/network_csv_maker.rb', line 16

def make_node(node, label, status, created_at, updated_at)
  [make_node_id(node), node.class.name, label, status, created_at, updated_at]
end

#make_node_id(node) ⇒ Object 



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# File 'app/workers/concerns/network_csv_maker.rb', line 12

def make_node_id(node)
  node.class.name + '_' + node.id.to_s
end

#nodes_snapshot(created_at) ⇒ Object 



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# File 'app/workers/concerns/network_csv_maker.rb', line 35

def nodes_snapshot(created_at)
  # Going over all the nodes
  nodes_file = './tmp/network_nodes.csv'

  CSV.open(nodes_file, 'wb', headers: true) do |csv|
    csv << @node_attributes

    find_records(Skill, created_at) do |skill|
      csv << make_node(skill, skill.skill_name, "", "", "")
    end

    find_records(Ressource, created_at) do |ressource|
      csv << make_node(ressource, ressource.ressource_name, "", "", "")
    end

    find_records(Interest, created_at) do |interest|
      csv << make_node(interest, interest.interest_name, "", "", "")
    end

    find_records(User, created_at) do |user|
      csv << make_node(user, user.nickname, user.active_status, user.created_at, user.updated_at)
    end

    find_records(Post, created_at) do |post|
      csv << make_node(post, post.id, "", post.created_at, post.updated_at)
    end

    find_records(Comment, created_at) do |comment|
      csv << make_node(comment, comment.id, "", comment.created_at, comment.updated_at)
    end

    find_records(Need, created_at) do |need|
      csv << make_node(need, need.id, need.status, need.created_at, need.updated_at)
    end

    find_records(Project, created_at) do |project|
      csv << make_node(project, project.short_title, project.status, project.created_at, project.updated_at)
    end

    find_records(Workgroup, created_at) do |workgroup|
      csv << make_node(workgroup, workgroup.short_title, workgroup.status, workgroup.created_at, workgroup.updated_at)
    end

    find_records(Challenge, created_at) do |challenge|
      csv << make_node(challenge, challenge.short_title, challenge.status, challenge.created_at, challenge.updated_at)
    end

    find_records(Program, created_at) do |program|
      csv << make_node(program, program.short_title, program.status, program.created_at, program.updated_at)
    end
  end

  nodes_file
end

#update_network_snapshot(network_id) ⇒ Object 



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# File 'app/workers/concerns/network_csv_maker.rb', line 121

def update_network_snapshot(network_id)
  return unless Network.exists?(network_id)

  network = Network.find(network_id)
  create_snapshot(network)
end