browsertrix/backend/btrixcloud/k8s/k8sapi.py
Ilya Kreymer 0c8a5a49b4 refactor to use docker swarm for local alternative to k8s instead of docker compose (#247):
- use python-on-whale to use docker cli api directly, creating docker stack for each crawl or profile browser
- configure storages via storages.yaml secret
- add crawl_job, profile_job, splitting into base and k8s/swarm implementations
- split manager into base crawlmanager and k8s/swarm implementations
- swarm: load initial scale from db to avoid modifying fixed configs, in k8s, load from configmap
- swarm: support scheduled jobs via swarm-cronjob service
- remove docker dependencies (aiodocker, apscheduler, scheduling)
- swarm: when using local minio, expose via /data/ route in nginx via extra include (in k8s, include dir is empty and routing handled via ingress)
- k8s: cleanup minio chart: move init containers to minio.yaml
- swarm: stateful set implementation to be consistent with k8s scaling:
  - don't use service replicas,
  - create a unique service with '-N' appended and allocate unique volume for each replica
  - allows crawl containers to be restarted w/o losing data
- add volume pruning background service, as volumes can be deleted only after service shuts down fully
- watch: fully simplify routing, route via replica index instead of ip for both k8s and swarm
- rename network btrix-cloud-net -> btrix-net to avoid conflict with compose network
2022-06-05 10:37:17 -07:00

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Python

""" K8S API Access """
from kubernetes_asyncio import client, config
from kubernetes_asyncio.stream import WsApiClient
from kubernetes_asyncio.client.api_client import ApiClient
# pylint: disable=too-few-public-methods
class K8sAPI:
""" K8S API accessors """
def __init__(self):
super().__init__()
config.load_incluster_config()
self.client = client
self.api_client = ApiClient()
self.core_api = client.CoreV1Api(self.api_client)
self.core_api_ws = client.CoreV1Api(api_client=WsApiClient())
self.batch_api = client.BatchV1Api(self.api_client)
self.apps_api = client.AppsV1Api(self.api_client)