2 # Copyright 2019 Telefonica Investigacion y Desarrollo, S.A.U.
3 # This file is part of OSM
6 # Licensed under the Apache License, Version 2.0 (the "License");
7 # you may not use this file except in compliance with the License.
8 # You may obtain a copy of the License at
10 # http://www.apache.org/licenses/LICENSE-2.0
12 # Unless required by applicable law or agreed to in writing, software
13 # distributed under the License is distributed on an "AS IS" BASIS,
14 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
16 # See the License for the specific language governing permissions and
17 # limitations under the License.
19 # For those usages not covered by the Apache License, Version 2.0 please
20 # contact with: nfvlabs@tid.es
29 from uuid
import uuid4
31 from n2vc
.exceptions
import K8sException
32 from n2vc
.k8s_conn
import K8sConnector
36 class K8sHelmConnector(K8sConnector
):
39 ####################################################################################
40 ################################### P U B L I C ####################################
41 ####################################################################################
43 service_account
= "osm"
49 kubectl_command
: str = "/usr/bin/kubectl",
50 helm_command
: str = "/usr/bin/helm",
56 :param fs: file system for kubernetes and helm configuration
57 :param db: database object to write current operation status
58 :param kubectl_command: path to kubectl executable
59 :param helm_command: path to helm executable
61 :param on_update_db: callback called when k8s connector updates database
65 K8sConnector
.__init
__(self
, db
=db
, log
=log
, on_update_db
=on_update_db
)
67 self
.log
.info("Initializing K8S Helm connector")
69 # random numbers for release name generation
70 random
.seed(time
.time())
75 # exception if kubectl is not installed
76 self
.kubectl_command
= kubectl_command
77 self
._check
_file
_exists
(filename
=kubectl_command
, exception_if_not_exists
=True)
79 # exception if helm is not installed
80 self
._helm
_command
= helm_command
81 self
._check
_file
_exists
(filename
=helm_command
, exception_if_not_exists
=True)
83 # initialize helm client-only
84 self
.log
.debug("Initializing helm client-only...")
85 command
= "{} init --client-only".format(self
._helm
_command
)
87 asyncio
.ensure_future(
88 self
._local
_async
_exec
(command
=command
, raise_exception_on_error
=False)
90 # loop = asyncio.get_event_loop()
91 # loop.run_until_complete(self._local_async_exec(command=command,
92 # raise_exception_on_error=False))
93 except Exception as e
:
95 msg
="helm init failed (it was already initialized): {}".format(e
)
98 self
.log
.info("K8S Helm connector initialized")
101 def _get_namespace_cluster_id(cluster_uuid
: str) -> (str, str):
103 Parses cluster_uuid stored at database that can be either 'namespace:cluster_id' or only
104 cluster_id for backward compatibility
106 namespace
, _
, cluster_id
= cluster_uuid
.rpartition(':')
107 return namespace
, cluster_id
110 self
, k8s_creds
: str, namespace
: str = "kube-system", reuse_cluster_uuid
=None
113 It prepares a given K8s cluster environment to run Charts on both sides:
117 :param k8s_creds: credentials to access a given K8s cluster, i.e. a valid
119 :param namespace: optional namespace to be used for helm. By default,
120 'kube-system' will be used
121 :param reuse_cluster_uuid: existing cluster uuid for reuse
122 :return: uuid of the K8s cluster and True if connector has installed some
123 software in the cluster
124 (on error, an exception will be raised)
127 if reuse_cluster_uuid
:
128 namespace_
, cluster_id
= self
._get
_namespace
_cluster
_id
(reuse_cluster_uuid
)
129 namespace
= namespace_
or namespace
131 cluster_id
= str(uuid4())
132 cluster_uuid
= "{}:{}".format(namespace
, cluster_id
)
134 self
.log
.debug("Initializing K8S Cluster {}. namespace: {}".format(cluster_id
, namespace
))
136 # create config filename
137 _kube_dir
, helm_dir
, config_filename
, _cluster_dir
= self
._get
_paths
(
138 cluster_name
=cluster_id
, create_if_not_exist
=True
140 with
open(config_filename
, "w") as f
:
143 # check if tiller pod is up in cluster
144 command
= "{} --kubeconfig={} --namespace={} get deployments".format(
145 self
.kubectl_command
, config_filename
, namespace
147 output
, _rc
= await self
._local
_async
_exec
(
148 command
=command
, raise_exception_on_error
=True
151 output_table
= self
._output
_to
_table
(output
=output
)
153 # find 'tiller' pod in all pods
154 already_initialized
= False
156 for row
in output_table
:
157 if row
[0].startswith("tiller-deploy"):
158 already_initialized
= True
164 n2vc_installed_sw
= False
165 if not already_initialized
:
167 "Initializing helm in client and server: {}".format(cluster_id
)
169 command
= "{} --kubeconfig={} --namespace kube-system create serviceaccount {}".format(
170 self
.kubectl_command
, config_filename
, self
.service_account
)
171 _
, _rc
= await self
._local
_async
_exec
(command
=command
, raise_exception_on_error
=False)
173 command
= ("{} --kubeconfig={} create clusterrolebinding osm-tiller-cluster-rule "
174 "--clusterrole=cluster-admin --serviceaccount=kube-system:{}"
175 ).format(self
.kubectl_command
, config_filename
, self
.service_account
)
176 _
, _rc
= await self
._local
_async
_exec
(command
=command
, raise_exception_on_error
=False)
178 command
= ("{} --kubeconfig={} --tiller-namespace={} --home={} --service-account {} "
179 "init").format(self
._helm
_command
, config_filename
, namespace
, helm_dir
,
180 self
.service_account
)
181 _
, _rc
= await self
._local
_async
_exec
(command
=command
, raise_exception_on_error
=True)
182 n2vc_installed_sw
= True
184 # check client helm installation
185 check_file
= helm_dir
+ "/repository/repositories.yaml"
186 if not self
._check
_file
_exists
(filename
=check_file
, exception_if_not_exists
=False):
187 self
.log
.info("Initializing helm in client: {}".format(cluster_id
))
189 "{} --kubeconfig={} --tiller-namespace={} "
190 "--home={} init --client-only"
191 ).format(self
._helm
_command
, config_filename
, namespace
, helm_dir
)
192 output
, _rc
= await self
._local
_async
_exec
(
193 command
=command
, raise_exception_on_error
=True
196 self
.log
.info("Helm client already initialized")
198 self
.log
.info("Cluster {} initialized".format(cluster_id
))
200 return cluster_uuid
, n2vc_installed_sw
203 self
, cluster_uuid
: str, name
: str, url
: str, repo_type
: str = "chart"
205 _
, cluster_id
= self
._get
_namespace
_cluster
_id
(cluster_uuid
)
206 self
.log
.debug("Cluster {}, adding {} repository {}. URL: {}".format(
207 cluster_id
, repo_type
, name
, url
))
210 _kube_dir
, helm_dir
, config_filename
, _cluster_dir
= self
._get
_paths
(
211 cluster_name
=cluster_id
, create_if_not_exist
=True
215 command
= "{} --kubeconfig={} --home={} repo update".format(
216 self
._helm
_command
, config_filename
, helm_dir
218 self
.log
.debug("updating repo: {}".format(command
))
219 await self
._local
_async
_exec
(command
=command
, raise_exception_on_error
=False)
221 # helm repo add name url
222 command
= "{} --kubeconfig={} --home={} repo add {} {}".format(
223 self
._helm
_command
, config_filename
, helm_dir
, name
, url
225 self
.log
.debug("adding repo: {}".format(command
))
226 await self
._local
_async
_exec
(command
=command
, raise_exception_on_error
=True)
228 async def repo_list(self
, cluster_uuid
: str) -> list:
230 Get the list of registered repositories
232 :return: list of registered repositories: [ (name, url) .... ]
235 _
, cluster_id
= self
._get
_namespace
_cluster
_id
(cluster_uuid
)
236 self
.log
.debug("list repositories for cluster {}".format(cluster_id
))
239 _kube_dir
, helm_dir
, config_filename
, _cluster_dir
= self
._get
_paths
(
240 cluster_name
=cluster_id
, create_if_not_exist
=True
243 command
= "{} --kubeconfig={} --home={} repo list --output yaml".format(
244 self
._helm
_command
, config_filename
, helm_dir
247 output
, _rc
= await self
._local
_async
_exec
(
248 command
=command
, raise_exception_on_error
=True
250 if output
and len(output
) > 0:
251 return yaml
.load(output
, Loader
=yaml
.SafeLoader
)
255 async def repo_remove(self
, cluster_uuid
: str, name
: str):
257 Remove a repository from OSM
259 :param cluster_uuid: the cluster or 'namespace:cluster'
260 :param name: repo name in OSM
261 :return: True if successful
264 _
, cluster_id
= self
._get
_namespace
_cluster
_id
(cluster_uuid
)
265 self
.log
.debug("list repositories for cluster {}".format(cluster_id
))
268 _kube_dir
, helm_dir
, config_filename
, _cluster_dir
= self
._get
_paths
(
269 cluster_name
=cluster_id
, create_if_not_exist
=True
272 command
= "{} --kubeconfig={} --home={} repo remove {}".format(
273 self
._helm
_command
, config_filename
, helm_dir
, name
276 await self
._local
_async
_exec
(command
=command
, raise_exception_on_error
=True)
279 self
, cluster_uuid
: str, force
: bool = False, uninstall_sw
: bool = False
282 namespace
, cluster_id
= self
._get
_namespace
_cluster
_id
(cluster_uuid
)
283 self
.log
.debug("Resetting K8s environment. cluster uuid: {} uninstall={}"
284 .format(cluster_id
, uninstall_sw
))
286 # get kube and helm directories
287 _kube_dir
, helm_dir
, config_filename
, _cluster_dir
= self
._get
_paths
(
288 cluster_name
=cluster_id
, create_if_not_exist
=False
291 # uninstall releases if needed.
293 releases
= await self
.instances_list(cluster_uuid
=cluster_uuid
)
294 if len(releases
) > 0:
298 kdu_instance
= r
.get("Name")
299 chart
= r
.get("Chart")
301 "Uninstalling {} -> {}".format(chart
, kdu_instance
)
303 await self
.uninstall(
304 cluster_uuid
=cluster_uuid
, kdu_instance
=kdu_instance
306 except Exception as e
:
308 "Error uninstalling release {}: {}".format(kdu_instance
, e
)
312 "Cluster uuid: {} has releases and not force. Leaving K8s helm environment"
315 uninstall_sw
= False # Allow to remove k8s cluster without removing Tiller
319 self
.log
.debug("Uninstalling tiller from cluster {}".format(cluster_id
))
322 # find namespace for tiller pod
323 command
= "{} --kubeconfig={} get deployments --all-namespaces".format(
324 self
.kubectl_command
, config_filename
326 output
, _rc
= await self
._local
_async
_exec
(
327 command
=command
, raise_exception_on_error
=False
329 output_table
= K8sHelmConnector
._output
_to
_table
(output
=output
)
331 for r
in output_table
:
333 if "tiller-deploy" in r
[1]:
339 msg
= "Tiller deployment not found in cluster {}".format(cluster_id
)
342 self
.log
.debug("namespace for tiller: {}".format(namespace
))
345 # uninstall tiller from cluster
347 "Uninstalling tiller from cluster {}".format(cluster_id
)
349 command
= "{} --kubeconfig={} --home={} reset".format(
350 self
._helm
_command
, config_filename
, helm_dir
352 self
.log
.debug("resetting: {}".format(command
))
353 output
, _rc
= await self
._local
_async
_exec
(
354 command
=command
, raise_exception_on_error
=True
356 # Delete clusterrolebinding and serviceaccount.
357 # Ignore if errors for backward compatibility
358 command
= ("{} --kubeconfig={} delete clusterrolebinding.rbac.authorization.k8s."
359 "io/osm-tiller-cluster-rule").format(self
.kubectl_command
,
361 output
, _rc
= await self
._local
_async
_exec
(command
=command
,
362 raise_exception_on_error
=False)
363 command
= "{} --kubeconfig={} --namespace kube-system delete serviceaccount/{}".\
364 format(self
.kubectl_command
, config_filename
, self
.service_account
)
365 output
, _rc
= await self
._local
_async
_exec
(command
=command
,
366 raise_exception_on_error
=False)
369 self
.log
.debug("namespace not found")
371 # delete cluster directory
372 direct
= self
.fs
.path
+ "/" + cluster_id
373 self
.log
.debug("Removing directory {}".format(direct
))
374 shutil
.rmtree(direct
, ignore_errors
=True)
383 timeout
: float = 300,
385 db_dict
: dict = None,
386 kdu_name
: str = None,
387 namespace
: str = None,
390 _
, cluster_id
= self
._get
_namespace
_cluster
_id
(cluster_uuid
)
391 self
.log
.debug("installing {} in cluster {}".format(kdu_model
, cluster_id
))
394 _kube_dir
, helm_dir
, config_filename
, _cluster_dir
= self
._get
_paths
(
395 cluster_name
=cluster_id
, create_if_not_exist
=True
399 # params_str = K8sHelmConnector._params_to_set_option(params)
400 params_str
, file_to_delete
= self
._params
_to
_file
_option
(
401 cluster_id
=cluster_id
, params
=params
406 timeout_str
= "--timeout {}".format(timeout
)
411 atomic_str
= "--atomic"
415 namespace_str
= "--namespace {}".format(namespace
)
420 parts
= kdu_model
.split(sep
=":")
422 version_str
= "--version {}".format(parts
[1])
425 # generate a name for the release. Then, check if already exists
427 while kdu_instance
is None:
428 kdu_instance
= K8sHelmConnector
._generate
_release
_name
(kdu_model
)
430 result
= await self
._status
_kdu
(
431 cluster_id
=cluster_id
,
432 kdu_instance
=kdu_instance
,
433 show_error_log
=False,
435 if result
is not None:
436 # instance already exists: generate a new one
443 "{helm} install {atomic} --output yaml --kubeconfig={config} --home={dir} "
444 "{params} {timeout} --name={name} {ns} {model} {ver}".format(
445 helm
=self
._helm
_command
,
447 config
=config_filename
,
457 self
.log
.debug("installing: {}".format(command
))
460 # exec helm in a task
461 exec_task
= asyncio
.ensure_future(
462 coro_or_future
=self
._local
_async
_exec
(
463 command
=command
, raise_exception_on_error
=False
467 # write status in another task
468 status_task
= asyncio
.ensure_future(
469 coro_or_future
=self
._store
_status
(
470 cluster_id
=cluster_id
,
471 kdu_instance
=kdu_instance
,
478 # wait for execution task
479 await asyncio
.wait([exec_task
])
484 output
, rc
= exec_task
.result()
488 output
, rc
= await self
._local
_async
_exec
(
489 command
=command
, raise_exception_on_error
=False
492 # remove temporal values yaml file
494 os
.remove(file_to_delete
)
497 await self
._store
_status
(
498 cluster_id
=cluster_id
,
499 kdu_instance
=kdu_instance
,
507 msg
= "Error executing command: {}\nOutput: {}".format(command
, output
)
509 raise K8sException(msg
)
511 self
.log
.debug("Returning kdu_instance {}".format(kdu_instance
))
514 async def instances_list(self
, cluster_uuid
: str) -> list:
516 returns a list of deployed releases in a cluster
518 :param cluster_uuid: the 'cluster' or 'namespace:cluster'
522 _
, cluster_id
= self
._get
_namespace
_cluster
_id
(cluster_uuid
)
523 self
.log
.debug("list releases for cluster {}".format(cluster_id
))
526 _kube_dir
, helm_dir
, config_filename
, _cluster_dir
= self
._get
_paths
(
527 cluster_name
=cluster_id
, create_if_not_exist
=True
530 command
= "{} --kubeconfig={} --home={} list --output yaml".format(
531 self
._helm
_command
, config_filename
, helm_dir
534 output
, _rc
= await self
._local
_async
_exec
(
535 command
=command
, raise_exception_on_error
=True
538 if output
and len(output
) > 0:
539 return yaml
.load(output
, Loader
=yaml
.SafeLoader
).get("Releases")
547 kdu_model
: str = None,
549 timeout
: float = 300,
551 db_dict
: dict = None,
554 _
, cluster_id
= self
._get
_namespace
_cluster
_id
(cluster_uuid
)
555 self
.log
.debug("upgrading {} in cluster {}".format(kdu_model
, cluster_id
))
558 _kube_dir
, helm_dir
, config_filename
, _cluster_dir
= self
._get
_paths
(
559 cluster_name
=cluster_id
, create_if_not_exist
=True
563 # params_str = K8sHelmConnector._params_to_set_option(params)
564 params_str
, file_to_delete
= self
._params
_to
_file
_option
(
565 cluster_id
=cluster_id
, params
=params
570 timeout_str
= "--timeout {}".format(timeout
)
575 atomic_str
= "--atomic"
579 if kdu_model
and ":" in kdu_model
:
580 parts
= kdu_model
.split(sep
=":")
582 version_str
= "--version {}".format(parts
[1])
587 "{} upgrade {} --output yaml --kubeconfig={} " "--home={} {} {} {} {} {}"
599 self
.log
.debug("upgrading: {}".format(command
))
603 # exec helm in a task
604 exec_task
= asyncio
.ensure_future(
605 coro_or_future
=self
._local
_async
_exec
(
606 command
=command
, raise_exception_on_error
=False
609 # write status in another task
610 status_task
= asyncio
.ensure_future(
611 coro_or_future
=self
._store
_status
(
612 cluster_id
=cluster_id
,
613 kdu_instance
=kdu_instance
,
620 # wait for execution task
621 await asyncio
.wait([exec_task
])
625 output
, rc
= exec_task
.result()
629 output
, rc
= await self
._local
_async
_exec
(
630 command
=command
, raise_exception_on_error
=False
633 # remove temporal values yaml file
635 os
.remove(file_to_delete
)
638 await self
._store
_status
(
639 cluster_id
=cluster_id
,
640 kdu_instance
=kdu_instance
,
648 msg
= "Error executing command: {}\nOutput: {}".format(command
, output
)
650 raise K8sException(msg
)
652 # return new revision number
653 instance
= await self
.get_instance_info(
654 cluster_uuid
=cluster_uuid
, kdu_instance
=kdu_instance
657 revision
= int(instance
.get("Revision"))
658 self
.log
.debug("New revision: {}".format(revision
))
664 self
, cluster_uuid
: str, kdu_instance
: str, revision
=0, db_dict
: dict = None
667 _
, cluster_id
= self
._get
_namespace
_cluster
_id
(cluster_uuid
)
669 "rollback kdu_instance {} to revision {} from cluster {}".format(
670 kdu_instance
, revision
, cluster_id
675 _kube_dir
, helm_dir
, config_filename
, _cluster_dir
= self
._get
_paths
(
676 cluster_name
=cluster_id
, create_if_not_exist
=True
679 command
= "{} rollback --kubeconfig={} --home={} {} {} --wait".format(
680 self
._helm
_command
, config_filename
, helm_dir
, kdu_instance
, revision
683 # exec helm in a task
684 exec_task
= asyncio
.ensure_future(
685 coro_or_future
=self
._local
_async
_exec
(
686 command
=command
, raise_exception_on_error
=False
689 # write status in another task
690 status_task
= asyncio
.ensure_future(
691 coro_or_future
=self
._store
_status
(
692 cluster_id
=cluster_id
,
693 kdu_instance
=kdu_instance
,
695 operation
="rollback",
700 # wait for execution task
701 await asyncio
.wait([exec_task
])
706 output
, rc
= exec_task
.result()
709 await self
._store
_status
(
710 cluster_id
=cluster_id
,
711 kdu_instance
=kdu_instance
,
713 operation
="rollback",
719 msg
= "Error executing command: {}\nOutput: {}".format(command
, output
)
721 raise K8sException(msg
)
723 # return new revision number
724 instance
= await self
.get_instance_info(
725 cluster_uuid
=cluster_uuid
, kdu_instance
=kdu_instance
728 revision
= int(instance
.get("Revision"))
729 self
.log
.debug("New revision: {}".format(revision
))
734 async def uninstall(self
, cluster_uuid
: str, kdu_instance
: str):
736 Removes an existing KDU instance. It would implicitly use the `delete` call
737 (this call would happen after all _terminate-config-primitive_ of the VNF
740 :param cluster_uuid: UUID of a K8s cluster known by OSM, or namespace:cluster_id
741 :param kdu_instance: unique name for the KDU instance to be deleted
742 :return: True if successful
745 _
, cluster_id
= self
._get
_namespace
_cluster
_id
(cluster_uuid
)
747 "uninstall kdu_instance {} from cluster {}".format(
748 kdu_instance
, cluster_id
753 _kube_dir
, helm_dir
, config_filename
, _cluster_dir
= self
._get
_paths
(
754 cluster_name
=cluster_id
, create_if_not_exist
=True
757 command
= "{} --kubeconfig={} --home={} delete --purge {}".format(
758 self
._helm
_command
, config_filename
, helm_dir
, kdu_instance
761 output
, _rc
= await self
._local
_async
_exec
(
762 command
=command
, raise_exception_on_error
=True
765 return self
._output
_to
_table
(output
)
767 async def exec_primitive(
769 cluster_uuid
: str = None,
770 kdu_instance
: str = None,
771 primitive_name
: str = None,
772 timeout
: float = 300,
774 db_dict
: dict = None,
776 """Exec primitive (Juju action)
778 :param cluster_uuid str: The UUID of the cluster or namespace:cluster
779 :param kdu_instance str: The unique name of the KDU instance
780 :param primitive_name: Name of action that will be executed
781 :param timeout: Timeout for action execution
782 :param params: Dictionary of all the parameters needed for the action
783 :db_dict: Dictionary for any additional data
785 :return: Returns the output of the action
788 "KDUs deployed with Helm don't support actions "
789 "different from rollback, upgrade and status"
792 async def inspect_kdu(self
, kdu_model
: str, repo_url
: str = None) -> str:
795 "inspect kdu_model {} from (optional) repo: {}".format(kdu_model
, repo_url
)
798 return await self
._exec
_inspect
_comand
(
799 inspect_command
="", kdu_model
=kdu_model
, repo_url
=repo_url
802 async def values_kdu(self
, kdu_model
: str, repo_url
: str = None) -> str:
805 "inspect kdu_model values {} from (optional) repo: {}".format(
810 return await self
._exec
_inspect
_comand
(
811 inspect_command
="values", kdu_model
=kdu_model
, repo_url
=repo_url
814 async def help_kdu(self
, kdu_model
: str, repo_url
: str = None) -> str:
817 "inspect kdu_model {} readme.md from repo: {}".format(kdu_model
, repo_url
)
820 return await self
._exec
_inspect
_comand
(
821 inspect_command
="readme", kdu_model
=kdu_model
, repo_url
=repo_url
824 async def status_kdu(self
, cluster_uuid
: str, kdu_instance
: str) -> str:
826 # call internal function
827 _
, cluster_id
= self
._get
_namespace
_cluster
_id
(cluster_uuid
)
828 return await self
._status
_kdu
(
829 cluster_id
=cluster_id
,
830 kdu_instance
=kdu_instance
,
835 async def get_services(self
,
838 namespace
: str) -> list:
840 _
, cluster_id
= self
._get
_namespace
_cluster
_id
(cluster_uuid
)
842 "get_services: cluster_uuid: {}, kdu_instance: {}".format(
843 cluster_uuid
, kdu_instance
847 status
= await self
._status
_kdu
(
848 cluster_id
, kdu_instance
, return_text
=False
851 service_names
= self
._parse
_helm
_status
_service
_info
(status
)
853 for service
in service_names
:
854 service
= await self
.get_service(cluster_uuid
, service
, namespace
)
855 service_list
.append(service
)
859 async def get_service(self
,
862 namespace
: str) -> object:
865 "get service, service_name: {}, namespace: {}, cluster_uuid: {}".format(
866 service_name
, namespace
, cluster_uuid
)
870 _
, cluster_id
= self
._get
_namespace
_cluster
_id
(cluster_uuid
)
871 _kube_dir
, helm_dir
, config_filename
, _cluster_dir
= self
._get
_paths
(
872 cluster_name
=cluster_id
, create_if_not_exist
=True
875 command
= "{} --kubeconfig={} --namespace={} get service {} -o=yaml".format(
876 self
.kubectl_command
, config_filename
, namespace
, service_name
879 output
, _rc
= await self
._local
_async
_exec
(
880 command
=command
, raise_exception_on_error
=True
883 data
= yaml
.load(output
, Loader
=yaml
.SafeLoader
)
886 "name": service_name
,
887 "type": self
._get
_deep
(data
, ("spec", "type")),
888 "ports": self
._get
_deep
(data
, ("spec", "ports")),
889 "cluster_ip": self
._get
_deep
(data
, ("spec", "clusterIP"))
891 if service
["type"] == "LoadBalancer":
892 ip_map_list
= self
._get
_deep
(data
, ("status", "loadBalancer", "ingress"))
893 ip_list
= [elem
["ip"] for elem
in ip_map_list
]
894 service
["external_ip"] = ip_list
898 async def synchronize_repos(self
, cluster_uuid
: str):
900 _
, cluster_id
= self
._get
_namespace
_cluster
_id
(cluster_uuid
)
901 self
.log
.debug("syncronize repos for cluster helm-id: {}".format(cluster_id
))
903 update_repos_timeout
= (
904 300 # max timeout to sync a single repos, more than this is too much
906 db_k8scluster
= self
.db
.get_one(
907 "k8sclusters", {"_admin.helm-chart.id": cluster_uuid
}
911 db_k8scluster
.get("_admin").get("helm_chart_repos") or []
913 cluster_repo_dict
= (
914 db_k8scluster
.get("_admin").get("helm_charts_added") or {}
916 # elements that must be deleted
917 deleted_repo_list
= []
919 # self.log.debug("helm_chart_repos: {}".format(nbi_repo_list))
920 # self.log.debug("helm_charts_added: {}".format(cluster_repo_dict))
922 # obtain repos to add: registered by nbi but not added
924 repo
for repo
in nbi_repo_list
if not cluster_repo_dict
.get(repo
)
927 # obtain repos to delete: added by cluster but not in nbi list
930 for repo
in cluster_repo_dict
.keys()
931 if repo
not in nbi_repo_list
934 # delete repos: must delete first then add because there may be
935 # different repos with same name but
936 # different id and url
938 self
.log
.debug("repos to delete: {}".format(repos_to_delete
))
939 for repo_id
in repos_to_delete
:
940 # try to delete repos
942 repo_delete_task
= asyncio
.ensure_future(
944 cluster_uuid
=cluster_uuid
,
945 name
=cluster_repo_dict
[repo_id
],
948 await asyncio
.wait_for(repo_delete_task
, update_repos_timeout
)
949 except Exception as e
:
951 "Error deleting repo, id: {}, name: {}, err_msg: {}".format(
952 repo_id
, cluster_repo_dict
[repo_id
], str(e
)
955 # always add to the list of to_delete if there is an error
956 # because if is not there
957 # deleting raises error
958 deleted_repo_list
.append(repo_id
)
962 self
.log
.debug("repos to add: {}".format(repos_to_add
))
963 for repo_id
in repos_to_add
:
964 # obtain the repo data from the db
965 # if there is an error getting the repo in the database we will
966 # ignore this repo and continue
967 # because there is a possible race condition where the repo has
968 # been deleted while processing
969 db_repo
= self
.db
.get_one("k8srepos", {"_id": repo_id
})
971 "obtained repo: id, {}, name: {}, url: {}".format(
972 repo_id
, db_repo
["name"], db_repo
["url"]
976 repo_add_task
= asyncio
.ensure_future(
978 cluster_uuid
=cluster_uuid
,
979 name
=db_repo
["name"],
984 await asyncio
.wait_for(repo_add_task
, update_repos_timeout
)
985 added_repo_dict
[repo_id
] = db_repo
["name"]
987 "added repo: id, {}, name: {}".format(
988 repo_id
, db_repo
["name"]
991 except Exception as e
:
992 # deal with error adding repo, adding a repo that already
993 # exists does not raise any error
994 # will not raise error because a wrong repos added by
995 # anyone could prevent instantiating any ns
997 "Error adding repo id: {}, err_msg: {} ".format(
1002 return deleted_repo_list
, added_repo_dict
1004 else: # else db_k8scluster does not exist
1006 "k8cluster with helm-id : {} not found".format(cluster_uuid
)
1009 except Exception as e
:
1010 self
.log
.error("Error synchronizing repos: {}".format(str(e
)))
1011 raise K8sException("Error synchronizing repos")
1014 ####################################################################################
1015 ################################### P R I V A T E ##################################
1016 ####################################################################################
1019 async def _exec_inspect_comand(
1020 self
, inspect_command
: str, kdu_model
: str, repo_url
: str = None
1025 repo_str
= " --repo {}".format(repo_url
)
1026 idx
= kdu_model
.find("/")
1029 kdu_model
= kdu_model
[idx
:]
1031 inspect_command
= "{} inspect {} {}{}".format(
1032 self
._helm
_command
, inspect_command
, kdu_model
, repo_str
1034 output
, _rc
= await self
._local
_async
_exec
(
1035 command
=inspect_command
, encode_utf8
=True
1040 async def _status_kdu(
1044 show_error_log
: bool = False,
1045 return_text
: bool = False,
1048 self
.log
.debug("status of kdu_instance {}".format(kdu_instance
))
1051 _kube_dir
, helm_dir
, config_filename
, _cluster_dir
= self
._get
_paths
(
1052 cluster_name
=cluster_id
, create_if_not_exist
=True
1055 command
= "{} --kubeconfig={} --home={} status {} --output yaml".format(
1056 self
._helm
_command
, config_filename
, helm_dir
, kdu_instance
1059 output
, rc
= await self
._local
_async
_exec
(
1061 raise_exception_on_error
=True,
1062 show_error_log
=show_error_log
,
1071 data
= yaml
.load(output
, Loader
=yaml
.SafeLoader
)
1073 # remove field 'notes'
1075 del data
.get("info").get("status")["notes"]
1079 # parse field 'resources'
1081 resources
= str(data
.get("info").get("status").get("resources"))
1082 resource_table
= self
._output
_to
_table
(resources
)
1083 data
.get("info").get("status")["resources"] = resource_table
1089 async def get_instance_info(self
, cluster_uuid
: str, kdu_instance
: str):
1090 instances
= await self
.instances_list(cluster_uuid
=cluster_uuid
)
1091 for instance
in instances
:
1092 if instance
.get("Name") == kdu_instance
:
1094 self
.log
.debug("Instance {} not found".format(kdu_instance
))
1098 def _generate_release_name(chart_name
: str):
1099 # check embeded chart (file or dir)
1100 if chart_name
.startswith("/"):
1101 # extract file or directory name
1102 chart_name
= chart_name
[chart_name
.rfind("/") + 1 :]
1104 elif "://" in chart_name
:
1105 # extract last portion of URL
1106 chart_name
= chart_name
[chart_name
.rfind("/") + 1 :]
1109 for c
in chart_name
:
1110 if c
.isalpha() or c
.isnumeric():
1117 # if does not start with alpha character, prefix 'a'
1118 if not name
[0].isalpha():
1123 def get_random_number():
1124 r
= random
.randrange(start
=1, stop
=99999999)
1126 s
= s
.rjust(10, "0")
1129 name
= name
+ get_random_number()
1132 async def _store_status(
1137 check_every
: float = 10,
1138 db_dict
: dict = None,
1139 run_once
: bool = False,
1141 previous_exception
= None
1144 await asyncio
.sleep(check_every
)
1145 detailed_status
= await self
._status
_kdu
(
1146 cluster_id
=cluster_id
, kdu_instance
=kdu_instance
,
1149 status
= detailed_status
.get("info").get("Description")
1150 self
.log
.debug('KDU {} STATUS: {}.'.format(kdu_instance
, status
))
1151 # write status to db
1152 result
= await self
.write_app_status_to_db(
1155 detailed_status
=str(detailed_status
),
1156 operation
=operation
,
1159 self
.log
.info("Error writing in database. Task exiting...")
1161 except asyncio
.CancelledError
:
1162 self
.log
.debug("Task cancelled")
1164 except Exception as e
:
1165 # log only once in the while loop
1166 if str(previous_exception
) != str(e
):
1167 self
.log
.debug("_store_status exception: {}".format(str(e
)))
1168 previous_exception
= e
1173 async def _is_install_completed(self
, cluster_id
: str, kdu_instance
: str) -> bool:
1175 status
= await self
._status
_kdu
(
1176 cluster_id
=cluster_id
, kdu_instance
=kdu_instance
, return_text
=False
1179 # extract info.status.resources-> str
1182 # NAME READY UP-TO-DATE AVAILABLE AGE
1183 # halting-horse-mongodb 0/1 1 0 0s
1184 # halting-petit-mongodb 1/1 1 0 0s
1186 resources
= K8sHelmConnector
._get
_deep
(status
, ("info", "status", "resources"))
1189 resources
= K8sHelmConnector
._output
_to
_table
(resources
)
1191 num_lines
= len(resources
)
1193 while index
< num_lines
:
1195 line1
= resources
[index
]
1197 # find '==>' in column 0
1198 if line1
[0] == "==>":
1199 line2
= resources
[index
]
1201 # find READY in column 1
1202 if line2
[1] == "READY":
1204 line3
= resources
[index
]
1206 while len(line3
) > 1 and index
< num_lines
:
1207 ready_value
= line3
[1]
1208 parts
= ready_value
.split(sep
="/")
1209 current
= int(parts
[0])
1210 total
= int(parts
[1])
1212 self
.log
.debug("NOT READY:\n {}".format(line3
))
1214 line3
= resources
[index
]
1222 def _parse_helm_status_service_info(self
, status
):
1224 # extract info.status.resources-> str
1227 # NAME READY UP-TO-DATE AVAILABLE AGE
1228 # halting-horse-mongodb 0/1 1 0 0s
1229 # halting-petit-mongodb 1/1 1 0 0s
1231 resources
= K8sHelmConnector
._get
_deep
(status
, ("info", "status", "resources"))
1234 first_line_skipped
= service_found
= False
1235 for line
in resources
:
1236 if not service_found
:
1237 if len(line
) >= 2 and line
[0] == "==>" and line
[1] == "v1/Service":
1238 service_found
= True
1241 if len(line
) >= 2 and line
[0] == "==>":
1242 service_found
= first_line_skipped
= False
1246 if not first_line_skipped
:
1247 first_line_skipped
= True
1249 service_list
.append(line
[0])
1254 def _get_deep(dictionary
: dict, members
: tuple):
1259 value
= target
.get(m
)
1268 # find key:value in several lines
1270 def _find_in_lines(p_lines
: list, p_key
: str) -> str:
1271 for line
in p_lines
:
1273 if line
.startswith(p_key
+ ":"):
1274 parts
= line
.split(":")
1275 the_value
= parts
[1].strip()
1282 # params for use in -f file
1283 # returns values file option and filename (in order to delete it at the end)
1284 def _params_to_file_option(self
, cluster_id
: str, params
: dict) -> (str, str):
1286 if params
and len(params
) > 0:
1287 self
._get
_paths
(cluster_name
=cluster_id
, create_if_not_exist
=True)
1289 def get_random_number():
1290 r
= random
.randrange(start
=1, stop
=99999999)
1298 value
= params
.get(key
)
1299 if "!!yaml" in str(value
):
1300 value
= yaml
.load(value
[7:])
1301 params2
[key
] = value
1303 values_file
= get_random_number() + ".yaml"
1304 with
open(values_file
, "w") as stream
:
1305 yaml
.dump(params2
, stream
, indent
=4, default_flow_style
=False)
1307 return "-f {}".format(values_file
), values_file
1311 # params for use in --set option
1313 def _params_to_set_option(params
: dict) -> str:
1315 if params
and len(params
) > 0:
1318 value
= params
.get(key
, None)
1319 if value
is not None:
1321 params_str
+= "--set "
1325 params_str
+= "{}={}".format(key
, value
)
1329 def _output_to_lines(output
: str) -> list:
1330 output_lines
= list()
1331 lines
= output
.splitlines(keepends
=False)
1335 output_lines
.append(line
)
1339 def _output_to_table(output
: str) -> list:
1340 output_table
= list()
1341 lines
= output
.splitlines(keepends
=False)
1343 line
= line
.replace("\t", " ")
1345 output_table
.append(line_list
)
1346 cells
= line
.split(sep
=" ")
1350 line_list
.append(cell
)
1354 self
, cluster_name
: str, create_if_not_exist
: bool = False
1355 ) -> (str, str, str, str):
1357 Returns kube and helm directories
1359 :param cluster_name:
1360 :param create_if_not_exist:
1361 :return: kube, helm directories, config filename and cluster dir.
1362 Raises exception if not exist and cannot create
1366 if base
.endswith("/") or base
.endswith("\\"):
1369 # base dir for cluster
1370 cluster_dir
= base
+ "/" + cluster_name
1371 if create_if_not_exist
and not os
.path
.exists(cluster_dir
):
1372 self
.log
.debug("Creating dir {}".format(cluster_dir
))
1373 os
.makedirs(cluster_dir
)
1374 if not os
.path
.exists(cluster_dir
):
1375 msg
= "Base cluster dir {} does not exist".format(cluster_dir
)
1377 raise K8sException(msg
)
1380 kube_dir
= cluster_dir
+ "/" + ".kube"
1381 if create_if_not_exist
and not os
.path
.exists(kube_dir
):
1382 self
.log
.debug("Creating dir {}".format(kube_dir
))
1383 os
.makedirs(kube_dir
)
1384 if not os
.path
.exists(kube_dir
):
1385 msg
= "Kube config dir {} does not exist".format(kube_dir
)
1387 raise K8sException(msg
)
1390 helm_dir
= cluster_dir
+ "/" + ".helm"
1391 if create_if_not_exist
and not os
.path
.exists(helm_dir
):
1392 self
.log
.debug("Creating dir {}".format(helm_dir
))
1393 os
.makedirs(helm_dir
)
1394 if not os
.path
.exists(helm_dir
):
1395 msg
= "Helm config dir {} does not exist".format(helm_dir
)
1397 raise K8sException(msg
)
1399 config_filename
= kube_dir
+ "/config"
1400 return kube_dir
, helm_dir
, config_filename
, cluster_dir
1403 def _remove_multiple_spaces(strobj
):
1404 strobj
= strobj
.strip()
1405 while " " in strobj
:
1406 strobj
= strobj
.replace(" ", " ")
1409 def _local_exec(self
, command
: str) -> (str, int):
1410 command
= K8sHelmConnector
._remove
_multiple
_spaces
(command
)
1411 self
.log
.debug("Executing sync local command: {}".format(command
))
1412 # raise exception if fails
1415 output
= subprocess
.check_output(
1416 command
, shell
=True, universal_newlines
=True
1419 self
.log
.debug(output
)
1423 return output
, return_code
1425 async def _local_async_exec(
1428 raise_exception_on_error
: bool = False,
1429 show_error_log
: bool = True,
1430 encode_utf8
: bool = False,
1433 command
= K8sHelmConnector
._remove
_multiple
_spaces
(command
)
1434 self
.log
.debug("Executing async local command: {}".format(command
))
1437 command
= command
.split(sep
=" ")
1440 process
= await asyncio
.create_subprocess_exec(
1441 *command
, stdout
=asyncio
.subprocess
.PIPE
, stderr
=asyncio
.subprocess
.PIPE
1444 # wait for command terminate
1445 stdout
, stderr
= await process
.communicate()
1447 return_code
= process
.returncode
1451 output
= stdout
.decode("utf-8").strip()
1452 # output = stdout.decode()
1454 output
= stderr
.decode("utf-8").strip()
1455 # output = stderr.decode()
1457 if return_code
!= 0 and show_error_log
:
1459 "Return code (FAIL): {}\nOutput:\n{}".format(return_code
, output
)
1462 self
.log
.debug("Return code: {}".format(return_code
))
1464 if raise_exception_on_error
and return_code
!= 0:
1465 raise K8sException(output
)
1468 output
= output
.encode("utf-8").strip()
1469 output
= str(output
).replace("\\n", "\n")
1471 return output
, return_code
1473 except asyncio
.CancelledError
:
1475 except K8sException
:
1477 except Exception as e
:
1478 msg
= "Exception executing command: {} -> {}".format(command
, e
)
1480 if raise_exception_on_error
:
1481 raise K8sException(e
) from e
1485 def _check_file_exists(self
, filename
: str, exception_if_not_exists
: bool = False):
1486 # self.log.debug('Checking if file {} exists...'.format(filename))
1487 if os
.path
.exists(filename
):
1490 msg
= "File {} does not exist".format(filename
)
1491 if exception_if_not_exists
:
1492 # self.log.error(msg)
1493 raise K8sException(msg
)