jam-cloud/admin/app/controllers/artifacts_controller.rb

class ArtifactsController < ApplicationController

  respond_to :json

  # create or update a client_artifact row
  def update_artifacts

    product = params[:product]
    version = params[:version]
    uri = params[:uri]
    file = params[:file]
    environment = params[:environment]

    ArtifactUpdate.transaction do
      # VRFS-1071: Postpone client update notification until installer is available for download
      ArtifactUpdate.connection.execute('SET TRANSACTION ISOLATION LEVEL READ COMMITTED')
      @artifact = ArtifactUpdate.find_or_create_by({product: product, environment: environment})

      @artifact.version = version
      @artifact.uri = file

      @artifact.save

      if @artifact.save
        @artifact.send_notice
      end
    end

      unless @artifact.errors.any?
        render :json => {}, :status => :ok
      else
        response.status = :unprocessable_entity
        respond_with @artifact
      end
  end

end