stack-orchestrator/app/deploy/k8s/deploy_k8s.py

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# Copyright © 2023 Vulcanize
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http:#www.gnu.org/licenses/>.
from kubernetes import client, config
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from app.deploy.deployer import Deployer
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from app.deploy.k8s.helpers import create_cluster, destroy_cluster, load_images_into_kind
from app.deploy.k8s.helpers import pods_in_deployment, log_stream_from_string
from app.deploy.k8s.cluster_info import ClusterInfo
from app.opts import opts
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class K8sDeployer(Deployer):
name: str = "k8s"
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core_api: client.CoreV1Api
apps_api: client.AppsV1Api
kind_cluster_name: str
cluster_info : ClusterInfo
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def __init__(self, compose_files, compose_project_name, compose_env_file) -> None:
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if (opts.o.debug):
print(f"Compose files: {compose_files}")
print(f"Project name: {compose_project_name}")
print(f"Env file: {compose_env_file}")
self.kind_cluster_name = compose_project_name
self.cluster_info = ClusterInfo()
self.cluster_info.int_from_pod_files(compose_files)
def connect_api(self):
config.load_kube_config(context=f"kind-{self.kind_cluster_name}")
self.core_api = client.CoreV1Api()
self.apps_api = client.AppsV1Api()
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def up(self, detach, services):
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# Create the kind cluster
create_cluster(self.kind_cluster_name)
self.connect_api()
# Ensure the referenced containers are copied into kind
load_images_into_kind(self.kind_cluster_name, self.cluster_info.image_set)
# Process compose files into a Deployment
deployment = self.cluster_info.get_deployment()
# Create the k8s objects
resp = self.apps_api.create_namespaced_deployment(
body=deployment, namespace="default"
)
if opts.o.debug:
print("Deployment created.\n")
print(f"{resp.metadata.namespace} {resp.metadata.name} \
{resp.metadata.generation} {resp.spec.template.spec.containers[0].image}")
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def down(self, timeout, volumes):
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# Delete the k8s objects
# Destroy the kind cluster
destroy_cluster(self.kind_cluster_name)
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def ps(self):
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self.connect_api()
# Call whatever API we need to get the running container list
ret = self.core_api.list_pod_for_all_namespaces(watch=False)
if ret.items:
for i in ret.items:
print("%s\t%s\t%s" % (i.status.pod_ip, i.metadata.namespace, i.metadata.name))
ret = self.core_api.list_node(pretty=True, watch=False)
return []
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def port(self, service, private_port):
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# Since we handle the port mapping, need to figure out where this comes from
# Also look into whether it makes sense to get ports for k8s
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pass
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def execute(self, service_name, command, tty, envs):
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# Call the API to execute a command in a running container
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pass
def logs(self, services, tail, follow, stream):
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self.connect_api()
pods = pods_in_deployment(self.core_api, "test-deployment")
if len(pods) > 1:
print("Warning: more than one pod in the deployment")
k8s_pod_name = pods[0]
log_data = self.core_api.read_namespaced_pod_log(k8s_pod_name, namespace="default", container="test")
return log_stream_from_string(log_data)
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def run(self, image, command, user, volumes, entrypoint=None):
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# We need to figure out how to do this -- check why we're being called first
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pass