Class: Blazer::QueriesController

Inherits:
BaseController
  • Object
show all
Defined in:
app/controllers/blazer/queries_controller.rb

Instance Method Summary collapse

Instance Method Details

#cancel ⇒ Object 



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# File 'app/controllers/blazer/queries_controller.rb', line 201

def cancel
  @data_source.cancel(blazer_run_id)
  head :ok
end

#columns ⇒ Object 



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# File 'app/controllers/blazer/queries_controller.rb', line 187

def columns
  column_names = []
  @data_source.schema.map do |t|
    if params[:tables].include?(t[:table])
      column_names += t[:columns].map { |c| c[:name] }
    end
  end
  render json: column_names
end

#create ⇒ Object 



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# File 'app/controllers/blazer/queries_controller.rb', line 49

def create
  return render_forbidden unless Blazer::Query.creatable?(blazer_user)
  @query = Blazer::Query.new(query_params)
  @query.creator = blazer_user if @query.respond_to?(:creator)

  if @query.save
    redirect_to query_path(@query, variable_params)
  else
    render_errors @query
  end
end

#destroy ⇒ Object 



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# File 'app/controllers/blazer/queries_controller.rb', line 178

def destroy
  @query.destroy if @query.editable?(blazer_user)
  redirect_to root_url
end

#edit ⇒ Object 



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# File 'app/controllers/blazer/queries_controller.rb', line 77

def edit
end

#home ⇒ Object 



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# File 'app/controllers/blazer/queries_controller.rb', line 7

def home
  if params[:filter] == "dashboards"
    @queries = []
  else
    set_queries(1000)
  end

  if params[:filter] && params[:filter] != "dashboards"
    @dashboards = [] # TODO show my dashboards
  else
    @dashboards = Blazer::Dashboard.order(:name)
    @dashboards = @dashboards.includes(:creator) if Blazer.user_class
  end

  @dashboards =
    @dashboards.map do |d|
      {
        id: d.id,
        name: d.name,
        creator: blazer_user && d.try(:creator) == blazer_user ? "You" : d.try(:creator).try(Blazer.user_name),
        to_param: d.to_param,
        dashboard: true
      }
    end
end

#index ⇒ Object 



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# File 'app/controllers/blazer/queries_controller.rb', line 33

def index
  set_queries
  render json: @queries
end

#new ⇒ Object 



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# File 'app/controllers/blazer/queries_controller.rb', line 38

def new
  return render_forbidden unless Blazer::Query.creatable?(blazer_user)
  @query = Blazer::Query.new(
    data_source: params[:data_source],
    name: params[:name]
  )
  if params[:fork_query_id]
    @query.statement ||= Blazer::Query.find(params[:fork_query_id]).try(:statement)
  end
end

#refresh ⇒ Object 



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# File 'app/controllers/blazer/queries_controller.rb', line 154

def refresh
  data_source = Blazer.data_sources[@query.data_source]
  @statement = @query.statement.dup
  process_vars(@statement, @query.data_source)
  Blazer.transform_statement.call(data_source, @statement) if Blazer.transform_statement
  data_source.clear_cache(@statement)
  redirect_to query_path(@query, variable_params)
end

#run ⇒ Object 



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# File 'app/controllers/blazer/queries_controller.rb', line 80

def run
  @statement = params[:statement]
  data_source = params[:data_source]
  process_vars(@statement, data_source)
  @only_chart = params[:only_chart]
  @run_id = blazer_params[:run_id]
  @query = Query.find_by(id: params[:query_id]) if params[:query_id]
  data_source = @query.data_source if @query && @query.data_source
  @data_source = Blazer.data_sources[data_source]

  # ensure viewable
  if !(@query || Query.new(data_source: @data_source.id)).viewable?(blazer_user)
    render_forbidden
  elsif @run_id
    @timestamp = blazer_params[:timestamp].to_i

    @result = @data_source.run_results(@run_id)
    @success = !@result.nil?

    if @success
      @data_source.delete_results(@run_id)
      @columns = @result.columns
      @rows = @result.rows
      @error = @result.error
      @just_cached = !@result.error && @result.cached_at.present?
      @cached_at = nil
      params[:data_source] = nil
      render_run
    elsif Time.now > Time.at(@timestamp + (@data_source.timeout || 600).to_i + 5)
      # query lost
      Rails.logger.info "[blazer lost query] #{@run_id}"
      @error = "We lost your query :("
      @rows = []
      @columns = []
      render_run
    else
      continue_run
    end
  elsif @success
    @run_id = blazer_run_id

    options = {user: blazer_user, query: @query, refresh_cache: params[:check], run_id: @run_id, async: Blazer.async}
    if Blazer.async && request.format.symbol != :csv
      result = []
      Blazer::RunStatementJob.perform_async(result, @data_source, @statement, options)
      wait_start = Time.now
      loop do
        sleep(0.02)
        break if result.any? || Time.now - wait_start > 3
      end
      @result = result.first
    else
      @result = Blazer::RunStatement.new.perform(@data_source, @statement, options)
    end

    if @result
      @data_source.delete_results(@run_id) if @run_id

      @columns = @result.columns
      @rows = @result.rows
      @error = @result.error
      @cached_at = @result.cached_at
      @just_cached = @result.just_cached

      render_run
    else
      @timestamp = Time.now.to_i
      continue_run
    end
  else
    render layout: false
  end
end

#schema ⇒ Object 



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# File 'app/controllers/blazer/queries_controller.rb', line 197

def schema
  @schema = @data_source.schema
end

#show ⇒ Object 



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# File 'app/controllers/blazer/queries_controller.rb', line 61

def show
  @statement = @query.statement.dup
  process_vars(@statement, @query.data_source)

  @smart_vars = {}
  @sql_errors = []
  data_source = Blazer.data_sources[@query.data_source]
  @bind_vars.each do |var|
    smart_var, error = parse_smart_variables(var, data_source)
    @smart_vars[var] = smart_var if smart_var
    @sql_errors << error if error
  end

  Blazer.transform_statement.call(data_source, @statement) if Blazer.transform_statement
end

#tables ⇒ Object 



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# File 'app/controllers/blazer/queries_controller.rb', line 183

def tables
  render json: @data_source.tables
end

#update ⇒ Object 



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# File 'app/controllers/blazer/queries_controller.rb', line 163

def update
  if params[:commit] == "Fork"
    @query = Blazer::Query.new
    @query.creator = blazer_user if @query.respond_to?(:creator)
  end
  unless @query.editable?(blazer_user)
    @query.errors.add(:base, "Sorry, permission denied")
  end
  if @query.errors.empty? && @query.update(query_params)
    redirect_to query_path(@query, variable_params)
  else
    render_errors @query
  end
end