Class: IMS::LTI::Services::ToolProxyRegistrationService

Inherits:
Object
  • Object
show all
Defined in:
lib/ims/lti/services/tool_proxy_registration_service.rb

Instance Method Summary collapse

Constructor Details

#initialize(registration_request) ⇒ ToolProxyRegistrationService

Returns a new instance of ToolProxyRegistrationService.



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# File 'lib/ims/lti/services/tool_proxy_registration_service.rb', line 3

def initialize(registration_request)
  @registration_request = registration_request
end

Instance Method Details

#register_tool_proxy(tool_proxy, reregistration_confirm_url = nil, shared_secret = nil) ⇒ Object 



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# File 'lib/ims/lti/services/tool_proxy_registration_service.rb', line 19

def register_tool_proxy(tool_proxy, reregistration_confirm_url = nil, shared_secret = nil)
  service = tool_consumer_profile.services_offered.find { |s| s.formats.include?('application/vnd.ims.lti.v2.toolproxy+json') && s.actions.include?('POST') }

  SimpleOAuth::Header::ATTRIBUTE_KEYS << :body_hash unless SimpleOAuth::Header::ATTRIBUTE_KEYS.include? :body_hash
  tool_proxy_json = tool_proxy.to_json
  body_hash = Digest::SHA1.base64digest tool_proxy_json

  if reregistration?
    consumer_key = tool_proxy.tool_proxy_guid
    consumer_secret = shared_secret
  else
    consumer_key = @registration_request.reg_key
    consumer_secret = @registration_request.reg_password
  end

  conn = Faraday.new do |conn|
    conn.request :oauth, {:consumer_key => consumer_key, :consumer_secret => consumer_secret, :body_hash => body_hash}
    conn.adapter :net_http
  end

  response = conn.post do |req|
    req.url service.endpoint
    req.headers['Content-Type'] = 'application/vnd.ims.lti.v2.toolproxy+json'
    req.headers['VND-IMS-CONFIRM-URL'] = reregistration_confirm_url if reregistration_confirm_url
    req.body = tool_proxy_json
  end

  if response.status == 201 || (response.status == 200 && reregistration?)
    IMS::LTI::Models::ToolProxy.new.from_json(tool_proxy.to_json).from_json(response.body)
  else
    raise IMS::LTI::Errors::ToolProxyRegistrationError.new(response.status, response.body)
  end
end

#remove_invalid_capabilities!(message_handler) ⇒ Object 



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# File 'lib/ims/lti/services/tool_proxy_registration_service.rb', line 54

def remove_invalid_capabilities!(message_handler)
  {
    invalid_capabilities: remove_capabilites!(message_handler),
    invalid_parameters: remove_params!(message_handler)
  }
end

#service_profiles ⇒ Object 



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# File 'lib/ims/lti/services/tool_proxy_registration_service.rb', line 15

def service_profiles
  tool_consumer_profile.services_offered.map(&:profile)
end

#tool_consumer_profile ⇒ Object 



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# File 'lib/ims/lti/services/tool_proxy_registration_service.rb', line 7

def tool_consumer_profile
  return @tool_consumer_profile if @tool_consumer_profile

  connection = Faraday.new
  response = connection.get(@registration_request.tc_profile_url)
  @tool_consumer_profile = IMS::LTI::Models::ToolConsumerProfile.new.from_json(response.body)
end