Class: Firecord::Credentials

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

Instance Method Summary collapse

Constructor Details

#initialize(credentials_file = nil) ⇒ Credentials

Returns a new instance of Credentials.



5
6
7
8
9
 
# File 'lib/firecord/credentials.rb', line 5

def initialize(credentials_file = nil)
  @credentials = \
    JSON.parse(File.read(credentials_file || Firecord.credentials_file))
  @private_key = OpenSSL::PKey::RSA.new @credentials['private_key']
end

Instance Method Details

#generate_access_token ⇒ Object 



27
28
29
30
31
32
33
34
35
36
37
38
39
40
 
# File 'lib/firecord/credentials.rb', line 27

def generate_access_token
  uri = URI.parse(@credentials['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: generate_jwt_assertion
  )

  resp = JSON.parse(https.request(req).body)
  resp['access_token']
end

#generate_jwt_assertion ⇒ Object 



15
16
17
18
19
20
21
22
23
24
25
 
# File 'lib/firecord/credentials.rb', line 15

def generate_jwt_assertion
  now_seconds = Time.now.to_i
  payload = {
    iss: @credentials['client_email'],
    aud: @credentials['token_uri'],
    iat: now_seconds,
    exp: now_seconds + (60 * 60),
    scope: 'https://www.googleapis.com/auth/userinfo.email https://www.googleapis.com/auth/firebase.database'
  }
  JWT.encode payload, @private_key, 'RS256'
end

#project_id ⇒ Object 



11
12
13
 
# File 'lib/firecord/credentials.rb', line 11

def project_id
  @credentials['project_id']
end