89 lines
3.2 KiB
Ruby
89 lines
3.2 KiB
Ruby
# frozen_string_literal: true
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#
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# Copyright (C) 2020 - present Instructure, Inc.
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#
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# This file is part of Canvas.
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#
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# Canvas is free software: you can redistribute it and/or modify it under
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# the terms of the GNU Affero General Public License as published by the Free
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# Software Foundation, version 3 of the License.
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#
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# Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Affero General Public License along
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# with this program. If not, see <http://www.gnu.org/licenses/>.
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module GoogleAnalyticsDimensions
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# Prepare some contextual data to supplement a pageview hit when submitting to
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# GA to provide the analyst with more context surrounding the request:
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#
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# {
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# "enrollments": BoolMask.<student, teacher, observer>,
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# "admin": BoolMask.<admin, site_admin>,
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# "masquerading": Bool
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# }
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#
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# Bool is a "0" or "1" value (encoded as strings) while "BoolMask" is a stream
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# of bools encoded also as a string. For example:
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#
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# {
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# "enrollments": "010", # a teacher
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# "admin": "11", # an admin and a site admin
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# "masquerading": "0" # nope
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# }
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#
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# Encoding flags in such a way gives us the flexibility to represent future
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# values while also giving the analyst more freedom in reporting (GA supports
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# regex filtering.)
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def self.calculate(domain_root_account:, user:, real_user:)
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user_roles = user ? user.roles(domain_root_account) : []
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{
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admin: _encode_admin_status(roles: user_roles),
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enrollments: _encode_enrollments(roles: user_roles),
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masquerading: _encode_masquerading_status(user: user, real_user: real_user),
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org_type: _encode_org_type(account: domain_root_account),
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user_id: _compute_non_compromising_user_id(user: user),
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}
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end
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# we only need some identifier that GA can utilize to track users across
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# different devices but we don't want it to know who the users are (e.g. their
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# canvas id)
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#
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# see https://support.google.com/analytics/answer/2992042?hl=en
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# see https://developers.google.com/analytics/devguides/collection/analyticsjs/cookies-user-id
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def self._compute_non_compromising_user_id(user:)
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user ? Canvas::Security.hmac_sha512(user.id.to_s)[0, 32] : nil
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end
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def self._encode_admin_status(roles:)
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# again, look at User#user_roles for the definition
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%w[admin root_admin].map do |enrollment_type|
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roles.include?(enrollment_type) ? '1' : '0'
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end.join('')
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end
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def self._encode_enrollments(roles:)
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# keep in mind that some of these roles may be rolled up from different
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# enrollment types, see User#user_roles for the meat
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%w[student teacher observer].map do |enrollment_type|
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roles.include?(enrollment_type) ? '1' : '0'
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end.join('')
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end
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def self._encode_org_type(account:)
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account&.external_integration_keys&.find_by(
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key_type: 'salesforce_org_type'
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)&.key_value
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end
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def self._encode_masquerading_status(user:, real_user:)
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real_user && real_user != user ? '1' : '0'
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end
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end
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