Class: RealTimeDb

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

Constant Summary collapse

SITE_URL = 
ENV["FIREBASE_SITE"]
SECRET = 
ENV["FIREBASE_SECRET"]
ENDPOINT = 
"pathofast"
ACCESSION_DONE = 
"ACCESSION_DONE"
PROCESSING = 
"PROCESSING"
WORK_TYPES = 
{
  "IMMUNO" => "",
  "BIOCHEM" => "",
  "BIOCHEM-EXL" => "",
  "BIOCHEM-ELECTROLYTE" => "",
  "HEMAT" => "",
  "URINE" => "",
  "OUTSOURCE" => ""
}

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(work_allotment_hash, private_key_hash) ⇒ RealTimeDb

@param work_allotment_hash : key => one of the work types value => name of a worker



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# File 'lib/publisher/real_time_db.rb', line 74

def initialize(work_allotment_hash,private_key_hash)
  self.private_key_hash = private_key_hash
  raise "please provide the private key hash, from firebase service account -> create private key " if private_key_hash.blank?
  self.connection = RestFirebase.new :site => SITE_URL,
                    :secret => SECRET, :auth =>generate_access_token
       puts "initialized"
       self.work_allotment_hash = work_allotment_hash || WORK_TYPES
end

Instance Attribute Details

#connection ⇒ Object

Returns the value of attribute connection.



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# File 'lib/publisher/real_time_db.rb', line 21

def connection
  @connection
end

#private_key_hash ⇒ Object

Returns the value of attribute private_key_hash.



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# File 'lib/publisher/real_time_db.rb', line 23

def private_key_hash
  @private_key_hash
end

#work_allotment_hash ⇒ Object

Returns the value of attribute work_allotment_hash.



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# File 'lib/publisher/real_time_db.rb', line 22

def work_allotment_hash
  @work_allotment_hash
end

Instance Method Details

#assign_test(barcode, tests, mappings) ⇒ Object

we pass the real_time_data instance into the



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# File 'lib/publisher/real_time_db.rb', line 121

def assign_test(barcode,tests,mappings)
  ## so do we get the name of the worker.
  if barcode_exists?(barcode[0]).blank?

    worker_hash = {}
    tests.each do |machine_code|
      worker_name = "NO_ONE"
      
      unless mappings[machine_code].blank?
        test_type = mappings[machine_code]["TYPE"]
        worker_name = self.work_allotment_hash[test_type]

        worker_hash[worker_name] ||= []

        #puts "worker name: #{worker_name}"
        #puts "lis code: #{machine_code}"
        #puts mappings[machine_code].to_s
        worker_hash[worker_name] << mappings[machine_code]["REPORT_NAME"]
      else
        worker_hash[worker_name] ||= []
        worker_hash[worker_name] << machine_code
      end
      
      
    end

    #puts "this is the workers hash"
    #puts worker_hash.to_s
    worker_hash.keys.each do |worker_name|
      k = self.connection.post(ENDPOINT, :tests => worker_hash[worker_name].uniq, :barcode => barcode[0], :timestamp => Time.now.strftime("%b %-d %Y %I:%M %P"), :worker_name => worker_name, :status => ACCESSION_DONE, :next_step =>  PROCESSING, :combi_key => worker_name + "_pending")
      #puts k.to_s
    end
  else
    puts "this barcode: #{barcode[0]} already exists."
  end

end

#barcode_exists?(barcode) ⇒ Boolean

if the barcode exists, otherwise create it.

Returns:

  • (Boolean) 


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# File 'lib/publisher/real_time_db.rb', line 102

def barcode_exists?(barcode)
  begin
    self.connection.get(ENDPOINT, :orderBy => 'barcode', :equalTo => barcode)
  rescue
    ## reestablish the connection
    self.connection = RestFirebase.new :site => SITE_URL,
                    :secret => SECRET, :auth =>generate_access_token
    true
  end
end

#generate_access_token ⇒ Object 



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# File 'lib/publisher/real_time_db.rb', line 54

def generate_access_token
  uri = URI.parse(self.private_key_hash["token_uri"])
  https = Net::HTTP.new(uri.host, uri.port)
  https.use_ssl = true
  req = Net::HTTP::Post.new(uri.path)
  req['Cache-Control'] = "no-store"
  req.set_form_data({
    grant_type: "urn:ietf:params:oauth:grant-type:jwt-bearer",
    assertion: get_jwt
  })

  resp = JSON.parse(https.request(req).body)
  puts "response is:"
  puts resp.to_s
  resp["access_token"]
end

#get_jwt ⇒ Object 



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# File 'lib/publisher/real_time_db.rb', line 36

def get_jwt
  puts Base64.encode64(JSON.generate(self.private_key_hash))
  # Get your service account's email address and private key from the JSON key file
   = self.private_key_hash["client_email"]
  $private_key = OpenSSL::PKey::RSA.new self.private_key_hash["private_key"]
    now_seconds = Time.now.to_i
    payload = {:iss => ,
               :sub => ,
               :aud => self.private_key_hash["token_uri"],
               :iat => now_seconds,
               :exp => now_seconds+(60*60), # Maximum expiration time is one hour
               :scope => 'https://www.googleapis.com/auth/userinfo.email https://www.googleapis.com/auth/firebase.database'

           }
    JWT.encode payload, $private_key, "RS256"
  
end

#open_event_stream ⇒ Object 



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# File 'lib/publisher/real_time_db.rb', line 83

def open_event_stream
  es = self.connection.event_source('users/tom')
  es.onopen   { |sock| p sock } # Called when connected
  es.onmessage{ |event, data, sock| p event, data } # Called for each message
  es.onerror  { |error, sock| p error } # Called whenever there's an error
  # Extra: If we return true in onreconnect callback, it would automatically
  #        reconnect the node for us if disconnected.
  @reconnect = true

  es.onreconnect{ |error, sock| p error; @reconnect }

  # Start making the request
  es.start

  self.connection.wait
end