Class: EcsDeploy::AutoScaler::ServiceConfig
- Inherits:
-
Struct
- Object
- Struct
- EcsDeploy::AutoScaler::ServiceConfig
- Includes:
- ConfigBase
- Defined in:
- lib/ecs_deploy/auto_scaler.rb
Instance Method Summary collapse
- #clear_client ⇒ Object
- #client ⇒ Object
- #current_min_task_count ⇒ Object
- #fetch_container_instances ⇒ Object
- #fetch_service ⇒ Object
- #idle? ⇒ Boolean
-
#initialize(attributes = {}) ⇒ ServiceConfig
constructor
A new instance of ServiceConfig.
- #overheat? ⇒ Boolean
- #update_service(difference) ⇒ Object
Constructor Details
#initialize(attributes = {}) ⇒ ServiceConfig
Returns a new instance of ServiceConfig.
134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 |
# File 'lib/ecs_deploy/auto_scaler.rb', line 134 def initialize(attributes = {}) super(attributes) self.idle_time ||= 60 self.max_task_count = Array(max_task_count) self.upscale_triggers = upscale_triggers.to_a.map do |t| TriggerConfig.new(t.merge(region: region)) end self.downscale_triggers = downscale_triggers.to_a.map do |t| TriggerConfig.new(t.merge(region: region)) end self.max_task_count.sort! self.desired_count = fetch_service.desired_count @reach_max_at = nil @last_updated_at = nil end |
Instance Method Details
#clear_client ⇒ Object
158 159 160 |
# File 'lib/ecs_deploy/auto_scaler.rb', line 158 def clear_client Thread.current["ecs_auto_scaler_ecs_#{region}"] = nil end |
#client ⇒ Object
150 151 152 153 154 155 156 |
# File 'lib/ecs_deploy/auto_scaler.rb', line 150 def client Thread.current["ecs_auto_scaler_ecs_#{region}"] ||= Aws::ECS::Client.new( access_key_id: EcsDeploy.config.access_key_id, secret_access_key: EcsDeploy.config.secret_access_key, region: region ) end |
#current_min_task_count ⇒ Object
169 170 171 172 173 174 175 176 177 |
# File 'lib/ecs_deploy/auto_scaler.rb', line 169 def current_min_task_count return min_task_count if scheduled_min_task_count.nil? || scheduled_min_task_count.empty? scheduled_min_task_count.find(-> { {"count" => min_task_count} }) { |s| from = Time.parse(s["from"]) to = Time.parse(s["to"]) (from..to).cover?(Time.now) }["count"] end |
#fetch_container_instances ⇒ Object
240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 |
# File 'lib/ecs_deploy/auto_scaler.rb', line 240 def fetch_container_instances arns = [] resp = nil loop do = {cluster: cluster} .merge(next_token: resp.next_token) if resp && resp.next_token resp = client.list_container_instances() arns.concat(resp.container_instance_arns) break unless resp.next_token end chunk_size = 50 container_instances = [] arns.each_slice(chunk_size) do |arn_chunk| is = client.describe_container_instances(cluster: cluster, container_instances: arn_chunk).container_instances container_instances.concat(is) end container_instances end |
#fetch_service ⇒ Object
184 185 186 187 188 189 190 191 |
# File 'lib/ecs_deploy/auto_scaler.rb', line 184 def fetch_service res = client.describe_services(cluster: cluster, services: [name]) raise "Service \"#{name}\" is not found" if res.services.empty? res.services[0] rescue => e AutoScaler.error_logger.error(e) clear_client end |
#idle? ⇒ Boolean
162 163 164 165 166 167 |
# File 'lib/ecs_deploy/auto_scaler.rb', line 162 def idle? return false unless @last_updated_at diff = Process.clock_gettime(Process::CLOCK_MONOTONIC, :second) - @last_updated_at diff < idle_time end |
#overheat? ⇒ Boolean
179 180 181 182 |
# File 'lib/ecs_deploy/auto_scaler.rb', line 179 def overheat? return false unless @reach_max_at (Process.clock_gettime(Process::CLOCK_MONOTONIC, :second) - @reach_max_at) > cooldown_time_for_reach_max end |
#update_service(difference) ⇒ Object
193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 |
# File 'lib/ecs_deploy/auto_scaler.rb', line 193 def update_service(difference) next_desired_count = desired_count + difference current_level = max_task_level(desired_count) next_level = max_task_level(next_desired_count) if current_level < next_level && overheat? # next max level = next_level @reach_max_at = nil AutoScaler.logger.info "Service \"#{name}\" is overheat, uses next max count" elsif current_level < next_level && !overheat? # wait cooldown level = current_level now = Process.clock_gettime(Process::CLOCK_MONOTONIC, :second) @reach_max_at ||= now AutoScaler.logger.info "Service \"#{name}\" waits cooldown elapsed #{(now - @reach_max_at).to_i}sec" elsif current_level == next_level && next_desired_count >= max_task_count[current_level] # reach current max level = current_level now = Process.clock_gettime(Process::CLOCK_MONOTONIC, :second) @reach_max_at ||= now AutoScaler.logger.info "Service \"#{name}\" waits cooldown elapsed #{(now - @reach_max_at).to_i}sec" elsif current_level == next_level && next_desired_count < max_task_count[current_level] level = current_level @reach_max_at = nil AutoScaler.logger.info "Service \"#{name}\" clears cooldown state" elsif current_level > next_level level = next_level @reach_max_at = nil AutoScaler.logger.info "Service \"#{name}\" clears cooldown state" end next_desired_count = [next_desired_count, max_task_count[level]].min client.update_service( cluster: cluster, service: name, desired_count: next_desired_count, ) client.wait_until(:services_stable, cluster: cluster, services: [name]) do |w| w.before_wait do AutoScaler.logger.debug "wait service stable [#{name}]" end end if difference < 0 @last_updated_at = Process.clock_gettime(Process::CLOCK_MONOTONIC, :second) self.desired_count = next_desired_count AutoScaler.logger.info "Update service \"#{name}\": desired_count -> #{next_desired_count}" rescue => e AutoScaler.error_logger.error(e) clear_client end |