summaryrefslogtreecommitdiff
path: root/app/models/ci/runner.rb
blob: 13c784bea0d1363ffd3ce9048332e13d55a8c24f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
module Ci
  class Runner < ActiveRecord::Base
    extend Gitlab::Ci::Model
    include Gitlab::SQL::Pattern
    include RedisCacheable

    RUNNER_QUEUE_EXPIRY_TIME = 60.minutes
    ONLINE_CONTACT_TIMEOUT = 1.hour
    UPDATE_DB_RUNNER_INFO_EVERY = 40.minutes
    AVAILABLE_SCOPES = %w[specific shared active paused online].freeze
    FORM_EDITABLE = %i[description tag_list active run_untagged locked access_level].freeze

    has_many :builds
    has_many :runner_projects, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
    has_many :projects, through: :runner_projects

    has_one :last_build, ->() { order('id DESC') }, class_name: 'Ci::Build'

    before_validation :set_default_values

    scope :specific, ->() { where(is_shared: false) }
    scope :shared, ->() { where(is_shared: true) }
    scope :active, ->() { where(active: true) }
    scope :paused, ->() { where(active: false) }
    scope :online, ->() { where('contacted_at > ?', contact_time_deadline) }
    scope :ordered, ->() { order(id: :desc) }

    scope :owned_or_shared, ->(project_id) do
      joins('LEFT JOIN ci_runner_projects ON ci_runner_projects.runner_id = ci_runners.id')
        .where("ci_runner_projects.project_id = :project_id OR ci_runners.is_shared = true", project_id: project_id)
    end

    scope :assignable_for, ->(project) do
      # FIXME: That `to_sql` is needed to workaround a weird Rails bug.
      #        Without that, placeholders would miss one and couldn't match.
      where(locked: false)
        .where.not("id IN (#{project.runners.select(:id).to_sql})").specific
    end

    validate :tag_constraints
    validates :access_level, presence: true

    acts_as_taggable

    after_destroy :cleanup_runner_queue

    enum access_level: {
      not_protected: 0,
      ref_protected: 1
    }

    cached_attr_reader :version, :revision, :platform, :architecture, :contacted_at

    # Searches for runners matching the given query.
    #
    # This method uses ILIKE on PostgreSQL and LIKE on MySQL.
    #
    # This method performs a *partial* match on tokens, thus a query for "a"
    # will match any runner where the token contains the letter "a". As a result
    # you should *not* use this method for non-admin purposes as otherwise users
    # might be able to query a list of all runners.
    #
    # query - The search query as a String
    #
    # Returns an ActiveRecord::Relation.
    def self.search(query)
      fuzzy_search(query, [:token, :description])
    end

    def self.contact_time_deadline
      ONLINE_CONTACT_TIMEOUT.ago
    end

    def set_default_values
      self.token = SecureRandom.hex(15) if self.token.blank?
    end

    def assign_to(project, current_user = nil)
      self.is_shared = false if shared?
      self.save
      project.runner_projects.create(runner_id: self.id)
    end

    def display_name
      return short_sha if description.blank?

      description
    end

    def shared?
      is_shared
    end

    def online?
      contacted_at && contacted_at > self.class.contact_time_deadline
    end

    def status
      if contacted_at.nil?
        :not_connected
      elsif active?
        online? ? :online : :offline
      else
        :paused
      end
    end

    def belongs_to_one_project?
      runner_projects.count == 1
    end

    def specific?
      !shared?
    end

    def can_pick?(build)
      return false if self.ref_protected? && !build.protected?

      assignable_for?(build.project_id) && accepting_tags?(build)
    end

    def only_for?(project)
      projects == [project]
    end

    def short_sha
      token[0...8] if token
    end

    def has_tags?
      tag_list.any?
    end

    def predefined_variables
      [
        { key: 'CI_RUNNER_ID', value: id.to_s, public: true },
        { key: 'CI_RUNNER_DESCRIPTION', value: description, public: true },
        { key: 'CI_RUNNER_TAGS', value: tag_list.to_s, public: true }
      ]
    end

    def tick_runner_queue
      SecureRandom.hex.tap do |new_update|
        ::Gitlab::Workhorse.set_key_and_notify(runner_queue_key, new_update,
          expire: RUNNER_QUEUE_EXPIRY_TIME, overwrite: true)
      end
    end

    def ensure_runner_queue_value
      new_value = SecureRandom.hex
      ::Gitlab::Workhorse.set_key_and_notify(runner_queue_key, new_value,
        expire: RUNNER_QUEUE_EXPIRY_TIME, overwrite: false)
    end

    def runner_queue_value_latest?(value)
      ensure_runner_queue_value == value if value.present?
    end

    def update_cached_info(values)
      values = values&.slice(:version, :revision, :platform, :architecture) || {}
      values[:contacted_at] = Time.now

      cache_attributes(values)

      if persist_cached_data?
        self.assign_attributes(values)
        self.save if self.changed?
      end
    end

    private

    def cleanup_runner_queue
      Gitlab::Redis::Queues.with do |redis|
        redis.del(runner_queue_key)
      end
    end

    def runner_queue_key
      "runner:build_queue:#{self.token}"
    end

    def persist_cached_data?
      # Use a random threshold to prevent beating DB updates.
      # It generates a distribution between [40m, 80m].

      contacted_at_max_age = UPDATE_DB_RUNNER_INFO_EVERY + Random.rand(UPDATE_DB_RUNNER_INFO_EVERY)

      real_contacted_at = read_attribute(:contacted_at)
      real_contacted_at.nil? ||
        (Time.now - real_contacted_at) >= contacted_at_max_age
    end

    def tag_constraints
      unless has_tags? || run_untagged?
        errors.add(:tags_list,
          'can not be empty when runner is not allowed to pick untagged jobs')
      end
    end

    def assignable_for?(project_id)
      is_shared? || projects.exists?(id: project_id)
    end

    def accepting_tags?(build)
      (run_untagged? || build.has_tags?) && (build.tag_list - tag_list).empty?
    end
  end
end