88 lines
3.4 KiB
Python
88 lines
3.4 KiB
Python
# Copyright 2018 Red Hat
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import logging
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from kazoo import exceptions as kze
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from nodepool.zk import zookeeper as zk
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from nodepool.driver.simple import SimpleTaskManagerHandler
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from nodepool.driver.utils import NodeLauncher
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class K8SLauncher(NodeLauncher):
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def __init__(self, handler, node, provider_config, provider_label):
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super().__init__(handler, node, provider_config)
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self.label = provider_label
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self._retries = provider_config.launch_retries
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def _launchLabel(self):
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self.log.debug("Creating resource")
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if self.label.type == "namespace":
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resource = self.handler.manager.createNamespace(
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self.node, self.handler.pool.name)
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else:
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resource = self.handler.manager.createPod(
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self.node, self.handler.pool.name, self.label)
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self.node.state = zk.READY
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self.node.python_path = self.label.python_path
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self.node.shell_type = self.label.shell_type
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# NOTE: resource access token may be encrypted here
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self.node.connection_port = resource
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if self.label.type == "namespace":
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self.node.connection_type = "namespace"
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else:
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self.node.connection_type = "kubectl"
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self.node.interface_ip = resource['pod']
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pool = self.handler.provider.pools.get(self.node.pool)
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resources = self.handler.manager.quotaNeededByLabel(
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self.node.type[0], pool)
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self.node.resources = resources.get_resources()
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self.zk.storeNode(self.node)
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self.log.info("Resource %s is ready" % resource['name'])
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def launch(self):
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attempts = 1
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while attempts <= self._retries:
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try:
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self._launchLabel()
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break
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except kze.SessionExpiredError:
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# If we lost our ZooKeeper session, we've lost our node lock
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# so there's no need to continue.
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raise
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except Exception:
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if attempts <= self._retries:
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self.log.exception(
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"Launch attempt %d/%d failed for node %s:",
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attempts, self._retries, self.node.id)
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# If we created an instance, delete it.
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if self.node.external_id:
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self.handler.manager.cleanupNode(self.node.external_id)
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self.handler.manager.waitForNodeCleanup(
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self.node.external_id)
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self.node.external_id = None
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self.node.interface_ip = None
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self.zk.storeNode(self.node)
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if attempts == self._retries:
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raise
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attempts += 1
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class KubernetesNodeRequestHandler(SimpleTaskManagerHandler):
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log = logging.getLogger("nodepool.driver.kubernetes."
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"KubernetesNodeRequestHandler")
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launcher = K8SLauncher
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