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1# ============LICENSE_START======================================================= 

2# org.onap.dcae 

3# ================================================================================ 

4# Copyright (c) 2017-2020 AT&T Intellectual Property. All rights reserved. 

5# Copyright (c) 2020 Pantheon.tech. All rights reserved. 

6# Copyright (c) 2020 Nokia. All rights reserved. 

7# ================================================================================ 

8# Licensed under the Apache License, Version 2.0 (the "License"); 

9# you may not use this file except in compliance with the License. 

10# You may obtain a copy of the License at 

11# 

12# http://www.apache.org/licenses/LICENSE-2.0 

13# 

14# Unless required by applicable law or agreed to in writing, software 

15# distributed under the License is distributed on an "AS IS" BASIS, 

16# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 

17# See the License for the specific language governing permissions and 

18# limitations under the License. 

19# ============LICENSE_END========================================================= 

20 

21# Lifecycle interface calls for containerized components 

22 

23# Needed by Cloudify Manager to load google.auth for the Kubernetes python client 

24from . import cloudify_importer 

25 

26import time, copy 

27import json 

28from cloudify import ctx 

29from cloudify.decorators import operation 

30from cloudify.exceptions import NonRecoverableError, RecoverableError 

31from onap_dcae_dcaepolicy_lib import Policies 

32from k8splugin import discovery as dis 

33from k8splugin.decorators import monkeypatch_loggers, wrap_error_handling_start, \ 

34 merge_inputs_for_start, merge_inputs_for_create, wrap_error_handling_update 

35from k8splugin.exceptions import DockerPluginDeploymentError 

36from k8splugin import utils 

37from configure import configure 

38import k8sclient 

39 

40# Get configuration 

41plugin_conf = configure.configure() 

42CONSUL_HOST = plugin_conf.get("consul_host") 

43CONSUL_INTERNAL_NAME = plugin_conf.get("consul_dns_name") 

44DCAE_NAMESPACE = plugin_conf.get("namespace") 

45DEFAULT_MAX_WAIT = plugin_conf.get("max_wait") 

46DEFAULT_K8S_LOCATION = plugin_conf.get("default_k8s_location") 

47COMPONENT_CERT_DIR = plugin_conf.get("tls",{}).get("component_cert_dir") 

48CBS_BASE_URL = plugin_conf.get("cbs").get("base_url") 

49 

50# Used to construct delivery urls for data router subscribers. Data router in FTL 

51# requires https but this author believes that ONAP is to be defaulted to http. 

52DEFAULT_SCHEME = "http" 

53 

54# Property keys 

55SERVICE_COMPONENT_NAME = "service_component_name" 

56CONTAINER_ID = "container_id" 

57APPLICATION_CONFIG = "application_config" 

58K8S_DEPLOYMENT = "k8s_deployment" 

59RESOURCE_KW = "resource_config" 

60LOCATION_ID = "location_id" 

61 

62# External cert parameters 

63EXT_CERT_DIR = "external_cert_directory" 

64EXT_CA_NAME = "ca_name" 

65EXT_CERT_PARAMS = "external_certificate_parameters" 

66EXT_COMMON_NAME = "common_name" 

67EXT_CERT_ERROR_MESSAGE = "Provided blueprint is incorrect. It specifies external_cert without all the required parameters. " \ 

68 "Required parameters are: {0}, {1}, {2}.{3}".format(EXT_CERT_DIR, EXT_CA_NAME, EXT_CERT_PARAMS, EXT_COMMON_NAME) 

69 

70# Utility methods 

71 

72# Lifecycle interface calls for dcae.nodes.DockerContainer 

73 

74def _setup_for_discovery(**kwargs): 

75 """Setup for config discovery""" 

76 try: 

77 name = kwargs['name'] 

78 application_config = kwargs[APPLICATION_CONFIG] 

79 

80 # NOTE: application_config is no longer a json string and is inputed as a 

81 # YAML map which translates to a dict. We don't have to do any 

82 # preprocessing anymore. 

83 conn = dis.create_kv_conn(CONSUL_HOST) 

84 dis.push_service_component_config(conn, name, application_config) 

85 return kwargs 

86 except dis.DiscoveryConnectionError as e: 86 ↛ 88line 86 didn't jump to line 88

87 raise RecoverableError(e) 

88 except Exception as e: 

89 ctx.logger.error("Unexpected error while pushing configuration: {0}" 

90 .format(str(e))) 

91 raise NonRecoverableError(e) 

92 

93def _generate_component_name(**kwargs): 

94 """Generate component name""" 

95 service_component_type = kwargs['service_component_type'] 

96 name_override = kwargs['service_component_name_override'] 

97 

98 kwargs['name'] = name_override if name_override \ 

99 else dis.generate_service_component_name(service_component_type) 

100 return kwargs 

101 

102def _done_for_create(**kwargs): 

103 """Wrap up create operation""" 

104 name = kwargs['name'] 

105 kwargs[SERVICE_COMPONENT_NAME] = name 

106 # All updates to the runtime_properties happens here. I don't see a reason 

107 # why we shouldn't do this because the context is not being mutated by 

108 # something else and will keep the other functions pure (pure in the sense 

109 # not dealing with CloudifyContext). 

110 ctx.instance.runtime_properties.update(kwargs) 

111 ctx.logger.info("Done setting up: {0}".format(name)) 

112 return kwargs 

113 

114def _get_resources(**kwargs): 

115 if kwargs is not None: 

116 ctx.logger.debug("{0}: {1}".format(RESOURCE_KW, kwargs.get(RESOURCE_KW))) 

117 return kwargs.get(RESOURCE_KW) 

118 ctx.logger.info("set resources to None") 

119 return None 

120 

121def _get_location(): 

122 ''' Get the k8s location property. Set to the default if the property is missing, None, or zero-length ''' 

123 return ctx.node.properties["location_id"] if "location_id" in ctx.node.properties and ctx.node.properties["location_id"] \ 

124 else DEFAULT_K8S_LOCATION 

125 

126@merge_inputs_for_create 

127@monkeypatch_loggers 

128@Policies.gather_policies_to_node() 

129@operation 

130def create_for_components(**create_inputs): 

131 """Create step for service components 

132 

133 This interface is responsible for: 

134 

135 1. Generating service component name 

136 2. Populating config information into Consul 

137 """ 

138 _done_for_create( 

139 **_setup_for_discovery( 

140 **_enhance_docker_params( 

141 **_generate_component_name( 

142 **create_inputs)))) 

143 

144 

145def _parse_streams(**kwargs): 

146 """Parse streams and setup for DMaaP plugin""" 

147 # The DMaaP plugin requires this plugin to set the runtime properties 

148 # keyed by the node name. 

149 for stream in kwargs["streams_publishes"]: 

150 kwargs[stream["name"]] = stream 

151 

152 for stream in kwargs["streams_subscribes"]: 

153 if stream["type"] == "data_router": 

154 

155 # Don't want to mutate the source 

156 stream = copy.deepcopy(stream) 

157 

158 # Set up the delivery URL 

159 # Using service_component_name as the host name in the subscriber URL 

160 # will work in a single-cluster ONAP deployment. Whether it will also work 

161 # in a multi-cluster ONAP deployment--with a central location and one or 

162 # more remote ("edge") locations depends on how networking and DNS is set 

163 # up in a multi-cluster deployment 

164 service_component_name = kwargs["name"] 

165 ports, _ = k8sclient.parse_ports(kwargs["ports"]) 

166 dport, _ = ports[0] 

167 subscriber_host = "{host}:{port}".format(host=service_component_name, port=dport) 

168 

169 scheme = stream.get("scheme", DEFAULT_SCHEME) 

170 if "route" not in stream: 170 ↛ 171line 170 didn't jump to line 171, because the condition on line 170 was never true

171 raise NonRecoverableError("'route' key missing from data router subscriber") 

172 path = stream["route"] 

173 stream["delivery_url"] = "{scheme}://{host}/{path}".format( 

174 scheme=scheme, host=subscriber_host, path=path) 

175 

176 # If username and password has not been provided then generate it. The 

177 # DMaaP plugin doesn't generate for subscribers. The generation code 

178 # and length of username password has been lifted from the DMaaP 

179 # plugin. 

180 if not stream.get("username", None): 

181 stream["username"] = utils.random_string(8) 

182 if not stream.get("password", None): 

183 stream["password"] = utils.random_string(10) 

184 

185 kwargs[stream["name"]] = stream 

186 

187 return kwargs 

188 

189@merge_inputs_for_create 

190@monkeypatch_loggers 

191@Policies.gather_policies_to_node() 

192@operation 

193def create_for_components_with_streams(**create_inputs): 

194 """Create step for service components that use DMaaP 

195 

196 This interface is responsible for: 

197 

198 1. Generating service component name 

199 2. Setup runtime properties for DMaaP plugin 

200 3. Populating application config into Consul 

201 """ 

202 _done_for_create( 

203 **_setup_for_discovery( 

204 **_parse_streams( 

205 **_enhance_docker_params( 

206 **_generate_component_name( 

207 **create_inputs))))) 

208 

209def _verify_k8s_deployment(location, service_component_name, max_wait): 

210 """Verify that the k8s Deployment is ready 

211 

212 Args: 

213 ----- 

214 location (string): location of the k8s cluster where the component was deployed 

215 service_component_name: component's service component name 

216 max_wait (integer): limit to how may attempts to make which translates to 

217 seconds because each sleep is one second. 0 means infinite. 

218 

219 Return: 

220 ------- 

221 True if deployment is ready within the maximum wait time, False otherwise 

222 """ 

223 num_attempts = 1 

224 

225 while True: 

226 if k8sclient.is_available(location, DCAE_NAMESPACE, service_component_name): 

227 return True 

228 else: 

229 num_attempts += 1 

230 

231 if max_wait > 0 and max_wait < num_attempts: 

232 return False 

233 

234 time.sleep(1) 

235 

236 return True 

237 

238def _fail_if_external_cert_incorrect(external_cert): 

239 if not (external_cert.get(EXT_CERT_DIR) 

240 and external_cert.get(EXT_CA_NAME) 

241 and external_cert.get(EXT_CERT_PARAMS) 

242 and external_cert.get(EXT_CERT_PARAMS).get(EXT_COMMON_NAME)): 

243 ctx.logger.error(EXT_CERT_ERROR_MESSAGE) 

244 raise NonRecoverableError(EXT_CERT_ERROR_MESSAGE) 

245 

246def _create_and_start_container(container_name, image, **kwargs): 

247 ''' 

248 This will create a k8s Deployment and, if needed, a k8s Service or two. 

249 (We are being opinionated in our use of k8s... this code decides what k8s abstractions and features to use. 

250 We're not exposing k8s to the component developer and the blueprint author. 

251 This is a conscious choice. We want to use k8s in a controlled, consistent way, and we want to hide 

252 the details from the component developer and the blueprint author.) 

253 

254 kwargs may have: 

255 - volumes: array of volume objects, where a volume object is: 

256 {"host":{"path": "/path/on/host"}, "container":{"bind":"/path/on/container","mode":"rw_or_ro"} 

257 - ports: array of strings in the form "container_port:host_port" 

258 - envs: map of name-value pairs ( {name0: value0, name1: value1...} ) 

259 - always_pull: boolean. If true, sets image pull policy to "Always" 

260 so that a fresh copy of the image is always pull. Otherwise, sets 

261 image pull policy to "IfNotPresent" 

262 - log_info: an object with info for setting up ELK logging, with the form: 

263 {"log_directory": "/path/to/container/log/directory", "alternate_fb_path" : "/alternate/sidecar/log/path"}" 

264 - tls_info: an object with information for setting up the component to act as a TLS server, with the form: 

265 {"use_tls" : true_or_false, "cert_directory": "/path/to/directory_where_certs_should_be_placed" } 

266 - external_cert: an object with information for setting up the init container for external certificates creation, with the form: 

267 {"external_cert": 

268 "external_cert_directory": "/path/to/directory_where_certs_should_be_placed", 

269 "use_external_tls": true or false, 

270 "ca_name": "ca-name-value", 

271 "cert_type": "P12" or "JKS" or "PEM", 

272 "external_certificate_parameters": 

273 "common_name": "common-name-value", 

274 "sans": "sans-value"} 

275 - replicas: number of replicas to be launched initially 

276 - readiness: object with information needed to create a readiness check 

277 - liveness: object with information needed to create a liveness check 

278 - k8s_location: name of the Kubernetes location (cluster) where the component is to be deployed 

279 ''' 

280 tls_info = kwargs.get("tls_info") or {} 

281 external_cert = kwargs.get("external_cert") 

282 if external_cert and external_cert.get("use_external_tls"): 

283 _fail_if_external_cert_incorrect(external_cert) 

284 cert_dir = tls_info.get("cert_directory") or COMPONENT_CERT_DIR 

285 env = { "CONSUL_HOST": CONSUL_INTERNAL_NAME, 

286 "CONFIG_BINDING_SERVICE": "config-binding-service", 

287 "DCAE_CA_CERTPATH" : "{0}/cacert.pem".format(cert_dir), 

288 "CBS_CONFIG_URL" : "{0}/{1}".format(CBS_BASE_URL, container_name) 

289 } 

290 env.update(kwargs.get("envs", {})) 

291 ctx.logger.info("Starting k8s deployment for {}, image: {}, env: {}, kwargs: {}".format(container_name, image, env, kwargs)) 

292 ctx.logger.info("Passing k8sconfig: {}".format(plugin_conf)) 

293 replicas = kwargs.get("replicas", 1) 

294 resource_config = _get_resources(**kwargs) 

295 _, dep = k8sclient.deploy(DCAE_NAMESPACE, 

296 container_name, 

297 image, 

298 replicas=replicas, 

299 always_pull=kwargs.get("always_pull_image", False), 

300 k8sconfig=plugin_conf, 

301 resources=resource_config, 

302 volumes=kwargs.get("volumes", []), 

303 ports=kwargs.get("ports", []), 

304 tls_info=kwargs.get("tls_info"), 

305 external_cert=kwargs.get("external_cert"), 

306 env=env, 

307 labels=kwargs.get("labels", {}), 

308 log_info=kwargs.get("log_info"), 

309 readiness=kwargs.get("readiness"), 

310 liveness=kwargs.get("liveness"), 

311 k8s_location=kwargs.get("k8s_location")) 

312 

313 # Capture the result of deployment for future use 

314 ctx.instance.runtime_properties[K8S_DEPLOYMENT] = dep 

315 kwargs[K8S_DEPLOYMENT] = dep 

316 ctx.instance.runtime_properties["replicas"] = replicas 

317 ctx.logger.info ("k8s deployment initiated successfully for {0}: {1}".format(container_name, dep)) 

318 return kwargs 

319 

320def _parse_cloudify_context(**kwargs): 

321 """Parse Cloudify context 

322 

323 Extract what is needed. This is impure function because it requires ctx. 

324 """ 

325 kwargs["deployment_id"] = ctx.deployment.id 

326 

327 # Set some labels for the Kubernetes pods 

328 # The name segment is required and must be 63 characters or less 

329 kwargs["labels"] = { 

330 "cfydeployment" : ctx.deployment.id, 

331 "cfynode": ctx.node.name[:63], 

332 "cfynodeinstance": ctx.instance.id[:63] 

333 } 

334 

335 # Pick up the centralized logging info 

336 if "log_info" in ctx.node.properties and "log_directory" in ctx.node.properties["log_info"]: 

337 kwargs["log_info"] = ctx.node.properties["log_info"] 

338 

339 # Pick up TLS info if present 

340 if "tls_info" in ctx.node.properties: 

341 kwargs["tls_info"] = ctx.node.properties["tls_info"] 

342 

343 # Pick up external TLS info if present 

344 if "external_cert" in ctx.node.properties: 

345 kwargs["external_cert"] = ctx.node.properties["external_cert"] 

346 

347 # Pick up replica count and always_pull_image flag 

348 if "replicas" in ctx.node.properties: 

349 kwargs["replicas"] = ctx.node.properties["replicas"] 

350 if "always_pull_image" in ctx.node.properties: 

351 kwargs["always_pull_image"] = ctx.node.properties["always_pull_image"] 

352 

353 # Pick up location 

354 kwargs["k8s_location"] = _get_location() 

355 

356 return kwargs 

357 

358def _enhance_docker_params(**kwargs): 

359 ''' 

360 Set up Docker environment variables and readiness/liveness check info 

361 and inject into kwargs. 

362 ''' 

363 

364 # Get info for setting up readiness/liveness probe, if present 

365 docker_config = kwargs.get("docker_config", {}) 

366 if "healthcheck" in docker_config: 366 ↛ 367line 366 didn't jump to line 367, because the condition on line 366 was never true

367 kwargs["readiness"] = docker_config["healthcheck"] 

368 if "livehealthcheck" in docker_config: 368 ↛ 369line 368 didn't jump to line 369, because the condition on line 368 was never true

369 kwargs["liveness"] = docker_config["livehealthcheck"] 

370 

371 envs = kwargs.get("envs", {}) 

372 

373 kwargs["envs"] = envs 

374 

375 def combine_params(key, docker_config, kwargs): 

376 v = docker_config.get(key, []) + kwargs.get(key, []) 

377 kwargs[key] = v 

378 return kwargs 

379 

380 # Add the lists of ports and volumes unintelligently - meaning just add the 

381 # lists together with no deduping. 

382 kwargs = combine_params("ports", docker_config, kwargs) 

383 kwargs = combine_params("volumes", docker_config, kwargs) 

384 

385 # Merge env vars from kwarg inputs and docker_config 

386 kwargs["envs"].update(docker_config.get("envs", {})) 

387 

388 

389 return kwargs 

390 

391def _create_and_start_component(**kwargs): 

392 """Create and start component (container)""" 

393 image = kwargs["image"] 

394 service_component_name = kwargs[SERVICE_COMPONENT_NAME] 

395 # Need to be picky and manually select out pieces because just using kwargs 

396 # which contains everything confused the execution of 

397 # _create_and_start_container because duplicate variables exist 

398 sub_kwargs = { 

399 "volumes": kwargs.get("volumes", []), 

400 "ports": kwargs.get("ports", None), 

401 "envs": kwargs.get("envs", {}), 

402 "log_info": kwargs.get("log_info", {}), 

403 "tls_info": kwargs.get("tls_info", {}), 

404 "external_cert": kwargs.get("external_cert", {}), 

405 "labels": kwargs.get("labels", {}), 

406 "resource_config": kwargs.get("resource_config",{}), 

407 "readiness": kwargs.get("readiness",{}), 

408 "liveness": kwargs.get("liveness",{}), 

409 "k8s_location": kwargs.get("k8s_location")} 

410 returned_args = _create_and_start_container(service_component_name, image, **sub_kwargs) 

411 kwargs[K8S_DEPLOYMENT] = returned_args[K8S_DEPLOYMENT] 

412 

413 return kwargs 

414 

415def _verify_component(**kwargs): 

416 """Verify deployment is ready""" 

417 service_component_name = kwargs[SERVICE_COMPONENT_NAME] 

418 

419 max_wait = kwargs.get("max_wait", DEFAULT_MAX_WAIT) 

420 ctx.logger.info("Waiting up to {0} secs for {1} to become ready".format(max_wait, service_component_name)) 

421 

422 if _verify_k8s_deployment(kwargs.get("k8s_location"), service_component_name, max_wait): 

423 ctx.logger.info("k8s deployment is ready for: {0}".format(service_component_name)) 

424 else: 

425 # The component did not become ready within the "max_wait" interval. 

426 # Delete the k8s components created already and remove configuration from Consul. 

427 ctx.logger.error("k8s deployment never became ready for {0}".format(service_component_name)) 

428 if (K8S_DEPLOYMENT in kwargs) and (len(kwargs[K8S_DEPLOYMENT]["deployment"]) > 0): 

429 ctx.logger.info("attempting to delete k8s artifacts: {0}".format(kwargs[K8S_DEPLOYMENT])) 

430 k8sclient.undeploy(kwargs[K8S_DEPLOYMENT]) 

431 ctx.logger.info("deleted k8s artifacts: {0}".format(kwargs[K8S_DEPLOYMENT])) 

432 cleanup_discovery(**kwargs) 

433 raise DockerPluginDeploymentError("k8s deployment never became ready for {0}".format(service_component_name)) 

434 

435 return kwargs 

436 

437def _done_for_start(**kwargs): 

438 ctx.instance.runtime_properties.update(kwargs) 

439 ctx.logger.info("Done starting: {0}".format(kwargs["name"])) 

440 return kwargs 

441 

442@wrap_error_handling_start 

443@merge_inputs_for_start 

444@monkeypatch_loggers 

445@operation 

446def create_and_start_container_for_components(**start_inputs): 

447 """Initiate Kubernetes deployment for service components 

448 

449 This operation method is to be used with the ContainerizedServiceComponent 

450 node type. After initiating a Kubernetes deployment, the plugin will verify with Kubernetes 

451 that the app is up and responding successfully to readiness probes. 

452 """ 

453 _done_for_start( 

454 **_verify_component( 

455 **_create_and_start_component( 

456 **_parse_cloudify_context(**start_inputs)))) 

457 

458@wrap_error_handling_start 

459@monkeypatch_loggers 

460@operation 

461def create_and_start_container(**kwargs): 

462 """Initiate a Kubernetes deployment for the generic ContainerizedApplication node type""" 

463 service_component_name = ctx.node.properties["name"] 

464 ctx.instance.runtime_properties[SERVICE_COMPONENT_NAME] = service_component_name 

465 

466 image = ctx.node.properties["image"] 

467 kwargs["k8s_location"] = _get_location() 

468 

469 _create_and_start_container(service_component_name, image,**kwargs) 

470 

471@monkeypatch_loggers 

472@operation 

473def stop_and_remove_container(**kwargs): 

474 """Delete Kubernetes deployment""" 

475 if K8S_DEPLOYMENT in ctx.instance.runtime_properties: 

476 try: 

477 deployment_description = ctx.instance.runtime_properties[K8S_DEPLOYMENT] 

478 k8sclient.undeploy(deployment_description) 

479 

480 except Exception as e: 

481 ctx.logger.error("Unexpected error while deleting k8s deployment: {0}" 

482 .format(str(e))) 

483 else: 

484 # A previous install workflow may have failed, 

485 # and no Kubernetes deployment info was recorded in runtime_properties. 

486 # No need to run the undeploy operation 

487 ctx.logger.info("No k8s deployment information, not attempting to delete k8s deployment") 

488 

489@wrap_error_handling_update 

490@monkeypatch_loggers 

491@operation 

492def scale(replicas, **kwargs): 

493 """Change number of replicas in the deployment""" 

494 service_component_name = ctx.instance.runtime_properties["service_component_name"] 

495 

496 if replicas > 0: 

497 current_replicas = ctx.instance.runtime_properties["replicas"] 

498 ctx.logger.info("Scaling {0} from {1} to {2} replica(s)".format(service_component_name, current_replicas, replicas)) 

499 deployment_description = ctx.instance.runtime_properties[K8S_DEPLOYMENT] 

500 k8sclient.scale(deployment_description, replicas) 

501 ctx.instance.runtime_properties["replicas"] = replicas 

502 

503 # Verify that the scaling took place as expected 

504 max_wait = kwargs.get("max_wait", DEFAULT_MAX_WAIT) 

505 ctx.logger.info("Waiting up to {0} secs for {1} to scale and become ready".format(max_wait, service_component_name)) 

506 if _verify_k8s_deployment(deployment_description["location"], service_component_name, max_wait): 

507 ctx.logger.info("Scaling complete: {0} from {1} to {2} replica(s)".format(service_component_name, current_replicas, replicas)) 

508 

509 else: 

510 ctx.logger.info("Ignoring request to scale {0} to zero replicas".format(service_component_name)) 

511 

512@wrap_error_handling_update 

513@monkeypatch_loggers 

514@operation 

515def update_image(image, **kwargs): 

516 """ Restart component with a new Docker image """ 

517 

518 service_component_name = ctx.instance.runtime_properties["service_component_name"] 

519 if image: 

520 current_image = ctx.instance.runtime_properties["image"] 

521 ctx.logger.info("Updating app image for {0} from {1} to {2}".format(service_component_name, current_image, image)) 

522 deployment_description = ctx.instance.runtime_properties[K8S_DEPLOYMENT] 

523 k8sclient.upgrade(deployment_description, image) 

524 ctx.instance.runtime_properties["image"] = image 

525 

526 # Verify that the update took place as expected 

527 max_wait = kwargs.get("max_wait", DEFAULT_MAX_WAIT) 

528 ctx.logger.info("Waiting up to {0} secs for {1} to be updated and become ready".format(max_wait, service_component_name)) 

529 if _verify_k8s_deployment(deployment_description["location"], service_component_name, max_wait): 

530 ctx.logger.info("Update complete: {0} from {1} to {2}".format(service_component_name, current_image, image)) 

531 

532 else: 

533 ctx.logger.info("Ignoring update_image request for {0} with unusable image '{1}'".format(service_component_name, str(image))) 

534 

535#TODO: implement rollback operation when kubernetes python client fix is available. 

536# (See comments in k8sclient.py.) 

537# In the meantime, it's possible to undo an update_image operation by doing a second 

538# update_image that specifies the older image. 

539 

540@monkeypatch_loggers 

541@Policies.cleanup_policies_on_node 

542@operation 

543def cleanup_discovery(**kwargs): 

544 """Delete configuration from Consul""" 

545 if SERVICE_COMPONENT_NAME in ctx.instance.runtime_properties: 

546 service_component_name = ctx.instance.runtime_properties[SERVICE_COMPONENT_NAME] 

547 

548 try: 

549 conn = dis.create_kv_conn(CONSUL_HOST) 

550 dis.remove_service_component_config(conn, service_component_name) 

551 except dis.DiscoveryConnectionError as e: 

552 raise RecoverableError(e) 

553 else: 

554 # When another node in the blueprint fails install, 

555 # this node may not have generated a service component name. 

556 # There's nothing to delete from Consul. 

557 ctx.logger.info ("No service_component_name, not attempting to delete config from Consul") 

558 

559def _notify_container(**kwargs): 

560 """ 

561 Notify container using the policy section in the docker_config. 

562 Notification consists of running a script in the application container 

563 in each pod in the Kubernetes deployment associated with this node. 

564 Return the list of notification results. 

565 """ 

566 dc = kwargs["docker_config"] 

567 resp = [] 

568 

569 if "policy" in dc and dc["policy"].get("trigger_type") == "docker": 569 ↛ 572line 569 didn't jump to line 572, because the condition on line 569 was never true

570 # Build the command to execute in the container 

571 # SCRIPT_PATH policies {"policies" : ...., "updated_policies" : ..., "removed_policies": ...} 

572 script_path = dc["policy"]["script_path"] 

573 policy_data = { 

574 "policies": kwargs["policies"], 

575 "updated_policies": kwargs["updated_policies"], 

576 "removed_policies": kwargs["removed_policies"] 

577 } 

578 

579 command = [script_path, "policies", json.dumps(policy_data)] 

580 

581 # Execute the command 

582 deployment_description = ctx.instance.runtime_properties[K8S_DEPLOYMENT] 

583 resp = k8sclient.execute_command_in_deployment(deployment_description, command) 

584 

585 # else the default is no trigger 

586 

587 return resp 

588 

589@operation 

590@monkeypatch_loggers 

591@Policies.update_policies_on_node() 

592def policy_update(updated_policies, removed_policies=None, policies=None, **kwargs): 

593 """Policy update task 

594 

595 This method is responsible for updating the application configuration and 

596 notifying the applications that the change has occurred. This is to be used 

597 for the dcae.interfaces.policy.policy_update operation. 

598 

599 :updated_policies: contains the list of changed policy-configs when configs_only=True 

600 (default) Use configs_only=False to bring the full policy objects in :updated_policies:. 

601 """ 

602 service_component_name = ctx.instance.runtime_properties[SERVICE_COMPONENT_NAME] 

603 ctx.logger.info("policy_update for {0}-- updated_policies: {1}, removed_policies: {2}, policies: {3}" 

604 .format(service_component_name, updated_policies, removed_policies, policies)) 

605 update_inputs = copy.deepcopy(ctx.instance.runtime_properties) 

606 update_inputs["updated_policies"] = updated_policies 

607 update_inputs["removed_policies"] = removed_policies 

608 update_inputs["policies"] = policies 

609 

610 resp = _notify_container(**update_inputs) 

611 ctx.logger.info("policy_update complete for {0}--notification results: {1}".format(service_component_name,json.dumps(resp)))