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 76

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

#expires_at ⇒ Object

Returns the value of attribute expires_at.



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# File 'lib/publisher/real_time_db.rb', line 24

def expires_at
  @expires_at
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 104

def barcode_exists?(barcode)
	current_time = Time.now.to_i
	if current_time > self.expires_at
		self.connection = RestFirebase.new :site => SITE_URL,
                    :secret => SECRET, :auth =>generate_access_token
	end
		self.connection.get(ENDPOINT, :orderBy => 'barcode', :equalTo => barcode)
end

#generate_access_token ⇒ Object 



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# File 'lib/publisher/real_time_db.rb', line 56

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 37

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
	$service_account_email = self.private_key_hash["client_email"]
	$private_key = OpenSSL::PKey::RSA.new self.private_key_hash["private_key"]
	  now_seconds = Time.now.to_i
	  self.expires_at = now_seconds + (60*30)
	  payload = {:iss => $service_account_email,
	             :sub => $service_account_email,
	             :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 85

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