Class: SPrintClient

Inherits:
Object
  • Object
show all
Defined in:
lib/sprint_client.rb

Overview

Interfaces with SPrint service: github.com/sanger/sprint

Class Method Summary collapse

Class Method Details

.get_label_template_path(label_template_name) ⇒ Object 



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# File 'lib/sprint_client.rb', line 90

def self.get_label_template_path(label_template_name)
  File.join('config', 'sprint', 'label_templates', label_template_name)
end

.get_template(path) ⇒ Object 



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# File 'lib/sprint_client.rb', line 77

def self.get_template(path)
  ERB.new File.read(path)
end

.send_post(body) ⇒ Object 



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# File 'lib/sprint_client.rb', line 68

def self.send_post(body)
  # send POST request to SPrint url and return response
  Net::HTTP.post URI(@@sprint_uri),
                 body.to_json,
                 'Content-Type' => 'application/json'
rescue StandardError => e
  Net::HTTPResponse.new('1.1', '422', "Failed to send post to #{@@sprint_uri}")
end

.send_print_request(printer_name, label_template_name, merge_fields_list) ⇒ Object

printer_name - a string showing which printer to send the request to label_template_name - a string to identify which label template to be used in the print request e.g plate_384.yml.erb merge_fields_list - a list of hashes, each containing the field values for a particular label

e.g

[

{"right_text"=>"DN9000003B", "left_text"=>"DN9000003B", "barcode"=>"DN9000003B", "extra_right_text"=>"DN9000003B  LTHR-384 RT", "extra_left_text"=>"10-NOV-2020"},
{"right_text"=>"DN9000003B", "left_text"=>"DN9000003B", "barcode"=>"DN9000003B", "extra_right_text"=>"DN9000003B  LTHR-384 RT", "extra_left_text"=>"10-NOV-2020"}

]

would print two labels



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# File 'lib/sprint_client.rb', line 20

def self.send_print_request(printer_name, label_template_name, merge_fields_list)
  # define GraphQL print mutation
  query = "mutation Print($printRequest: PrintRequest!, $printer: String!) {
    print(printRequest: $printRequest, printer: $printer) {
      jobId
    }
  }"

  # locate the required label template
  path = get_label_template_path(label_template_name)
  begin
    template = get_template(path)
  rescue StandardError => e
    return Net::HTTPResponse.new('1.1', '422', "Could not find label template with name #{label_template_name}")
  end

  # parse the template for each label
  layouts = set_layouts(merge_fields_list, template)
  # layouts: [
  #   {
  #     "labelSize"=>{"width"=>68, "height"=>6, "displacement"=>13},
  #     "barcodeFields"=>[{"x"=>21, "y"=>0, "cellWidth"=>0.2, "barcodeType"=>"code39", "value"=>"DN9000003B", "height"=>5}],
  #     "textFields"=>[{"x"=>1, "y"=>4, "value"=>"DN9000003B", "font"=>"proportional", "fontSize"=>1.7}, {"x"=>47, "y"=>4, "value"=>"DN9000003B", "font"=>"proportional", "fontSize"=>1.7}]
  #   },
  #   {
  #     "labelSize"=>{"width"=>68, "height"=>6, "displacement"=>13},
  #     "textFields"=>[{"x"=>1, "y"=>3, "value"=>"10-NOV-2020", "font"=>"proportional", "fontSize"=>1.7}, {"x"=>15, "y"=>3, "value"=>"DN9000003B  LTHR-384 RT", "font"=>"proportional", "fontSize"=>1.7}]
  #   }
  # ]

  # build the body of the print request
  body = {
    "query": query,
    "variables": {
      "printer": printer_name,
      "printRequest": {
        "layouts": layouts
      }
    }
  }

  send_post(body)
end

.set_layouts(merge_fields_list, template) ⇒ Object 



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# File 'lib/sprint_client.rb', line 81

def self.set_layouts(merge_fields_list, template)
  layouts = []
  merge_fields_list.each do |merge_fields|
    template_array = YAML.load template.result binding
    template_array.each { |ar| layouts << ar }
  end
  layouts
end

.sprint_uri=(sprint_uri) ⇒ Object 



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# File 'lib/sprint_client.rb', line 64

def self.sprint_uri=(sprint_uri)
  @@sprint_uri = sprint_uri
end