1220 lines
48 KiB
Python
1220 lines
48 KiB
Python
#!/usr/bin/env python
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# Copyright (C) 2011-2013 OpenStack Foundation
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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#
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from statsd import statsd
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import apscheduler.scheduler
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import gear
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import json
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import logging
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import os
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import threading
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import time
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import yaml
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import zmq
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import allocation
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import jenkins_manager
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import nodedb
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import nodeutils as utils
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import provider_manager
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MINS = 60
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HOURS = 60 * MINS
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WATERMARK_SLEEP = 5 # Interval between checking if new servers needed
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IMAGE_TIMEOUT = 6 * HOURS # How long to wait for an image save
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CONNECT_TIMEOUT = 10 * MINS # How long to try to connect after a server
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# is ACTIVE
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NODE_CLEANUP = 8 * HOURS # When to start deleting a node that is not
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# READY or HOLD
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TEST_CLEANUP = 5 * MINS # When to start deleting a node that is in TEST
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KEEP_OLD_IMAGE = 24 * HOURS # How long to keep an old (good) image
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DELETE_DELAY = 1 * MINS # Delay before deleting a node that has completed
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# its job.
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class NodeCompleteThread(threading.Thread):
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log = logging.getLogger("nodepool.NodeCompleteThread")
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def __init__(self, nodepool, nodename, jobname, result):
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threading.Thread.__init__(self, name='NodeCompleteThread for %s' % nodename)
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self.nodename = nodename
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self.nodepool = nodepool
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self.jobname = jobname
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self.result = result
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def run(self):
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try:
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with self.nodepool.getDB().getSession() as session:
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self.handleEvent(session)
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except Exception:
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self.log.exception("Exception handling event for %s:" %
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self.nodename)
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def handleEvent(self, session):
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node = session.getNodeByNodename(self.nodename)
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if not node:
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self.log.debug("Unable to find node with nodename: %s" %
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self.nodename)
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return
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if node.state == nodedb.HOLD:
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self.log.info("Node id: %s is complete but in HOLD state" %
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node.id)
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return
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target = self.nodepool.config.targets[node.target_name]
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if self.jobname == target.jenkins_test_job:
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self.log.debug("Test job for node id: %s complete, result: %s" %
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(node.id, self.result))
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if self.result == 'SUCCESS':
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jenkins = self.nodepool.getJenkinsManager(target)
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old = jenkins.relabelNode(node.nodename, [node.image_name])
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if not old:
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old = '[unlabeled]'
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self.log.info("Relabeled jenkins node id: %s from %s to %s" %
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(node.id, old, node.image_name))
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node.state = nodedb.READY
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self.log.info("Node id: %s is ready" % node.id)
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self.nodepool.updateStats(session, node.provider_name)
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return
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self.log.info("Node id: %s failed acceptance test, deleting" %
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node.id)
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time.sleep(DELETE_DELAY)
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self.nodepool.deleteNode(session, node)
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class NodeUpdateListener(threading.Thread):
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log = logging.getLogger("nodepool.NodeUpdateListener")
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def __init__(self, nodepool, addr):
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threading.Thread.__init__(self, name='NodeUpdateListener')
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self.nodepool = nodepool
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self.socket = self.nodepool.zmq_context.socket(zmq.SUB)
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event_filter = b""
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self.socket.setsockopt(zmq.SUBSCRIBE, event_filter)
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self.socket.connect(addr)
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self._stopped = False
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def run(self):
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while not self._stopped:
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m = self.socket.recv().decode('utf-8')
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try:
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topic, data = m.split(None, 1)
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self.handleEvent(topic, data)
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except Exception:
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self.log.exception("Exception handling job:")
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def handleEvent(self, topic, data):
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self.log.debug("Received: %s %s" % (topic, data))
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args = json.loads(data)
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build = args['build']
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if 'node_name' not in build:
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return
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jobname = args['name']
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nodename = args['build']['node_name']
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if topic == 'onStarted':
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self.handleStartPhase(nodename, jobname)
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elif topic == 'onCompleted':
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pass
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elif topic == 'onFinalized':
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result = args['build'].get('status')
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self.handleCompletePhase(nodename, jobname, result)
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else:
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raise Exception("Received job for unhandled phase: %s" %
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topic)
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def handleStartPhase(self, nodename, jobname):
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with self.nodepool.getDB().getSession() as session:
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node = session.getNodeByNodename(nodename)
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if not node:
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self.log.debug("Unable to find node with nodename: %s" %
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nodename)
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return
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target = self.nodepool.config.targets[node.target_name]
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if jobname == target.jenkins_test_job:
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self.log.debug("Test job for node id: %s started" % node.id)
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return
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self.log.info("Setting node id: %s to USED" % node.id)
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node.state = nodedb.USED
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self.nodepool.updateStats(session, node.provider_name)
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def handleCompletePhase(self, nodename, jobname, result):
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t = NodeCompleteThread(self.nodepool, nodename, jobname, result)
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t.start()
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class GearmanClient(gear.Client):
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def __init__(self):
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super(GearmanClient, self).__init__()
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self.__log = logging.getLogger("nodepool.GearmanClient")
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def getNeededWorkers(self):
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needed_workers = {}
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job_worker_map = {}
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unspecified_jobs = {}
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for connection in self.active_connections:
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try:
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req = gear.StatusAdminRequest()
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connection.sendAdminRequest(req)
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except Exception:
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self.__log.exception("Exception while listing functions")
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continue
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for line in req.response.split('\n'):
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parts = [x.strip() for x in line.split()]
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if not parts or parts[0] == '.':
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continue
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if not parts[0].startswith('build:'):
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continue
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function = parts[0][len('build:'):]
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# total jobs in queue - running
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queued = int(parts[1]) - int(parts[2])
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if queued > 0:
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self.__log.debug("Function: %s queued: %s" % (function,
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queued))
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if ':' in function:
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fparts = function.split(':')
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job = fparts[-2]
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worker = fparts[-1]
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workers = job_worker_map.get(job, [])
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workers.append(worker)
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job_worker_map[job] = workers
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if queued > 0:
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needed_workers[worker] = (
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needed_workers.get(worker, 0) + queued)
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elif queued > 0:
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job = function
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unspecified_jobs[job] = (unspecified_jobs.get(job, 0) +
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queued)
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for job, queued in unspecified_jobs.items():
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workers = job_worker_map.get(job)
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if not workers:
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continue
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worker = workers[0]
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needed_workers[worker] = (needed_workers.get(worker, 0) +
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queued)
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return needed_workers
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class NodeLauncher(threading.Thread):
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log = logging.getLogger("nodepool.NodeLauncher")
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def __init__(self, nodepool, provider, image, target, node_id, timeout):
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threading.Thread.__init__(self, name='NodeLauncher for %s' % node_id)
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self.provider = provider
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self.image = image
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self.target = target
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self.node_id = node_id
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self.timeout = timeout
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self.nodepool = nodepool
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def run(self):
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try:
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self._run()
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except Exception:
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self.log.exception("Exception in run method:")
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def _run(self):
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with self.nodepool.getDB().getSession() as session:
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self.log.debug("Launching node id: %s" % self.node_id)
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try:
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self.node = session.getNode(self.node_id)
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self.manager = self.nodepool.getProviderManager(self.provider)
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except Exception:
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self.log.exception("Exception preparing to launch node id: %s:"
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% self.node_id)
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return
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try:
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self.launchNode(session)
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except Exception:
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self.log.exception("Exception launching node id: %s:" %
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self.node_id)
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try:
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self.nodepool.deleteNode(session, self.node)
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except Exception:
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self.log.exception("Exception deleting node id: %s:" %
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self.node_id)
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return
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def launchNode(self, session):
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start_time = time.time()
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hostname = '%s-%s-%s.slave.openstack.org' % (
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self.image.name, self.provider.name, self.node.id)
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self.node.hostname = hostname
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self.node.nodename = hostname.split('.')[0]
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self.node.target_name = self.target.name
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snap_image = session.getCurrentSnapshotImage(
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self.provider.name, self.image.name)
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if not snap_image:
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raise Exception("Unable to find current snapshot image %s in %s" %
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(self.image.name, self.provider.name))
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self.log.info("Creating server with hostname %s in %s from image %s "
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"for node id: %s" % (hostname, self.provider.name,
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self.image.name, self.node_id))
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server_id = self.manager.createServer(hostname,
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self.image.min_ram,
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snap_image.external_id)
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self.node.external_id = server_id
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session.commit()
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self.log.debug("Waiting for server %s for node id: %s" %
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(server_id, self.node.id))
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server = self.manager.waitForServer(server_id)
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if server['status'] != 'ACTIVE':
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raise Exception("Server %s for node id: %s status: %s" %
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(server_id, self.node.id, server['status']))
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ip = server.get('public_v4')
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if not ip and self.manager.hasExtension('os-floating-ips'):
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ip = self.manager.addPublicIP(server_id)
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if not ip:
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raise Exception("Unable to find public IP of server")
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self.node.ip = ip
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self.log.debug("Node id: %s is running, ip: %s, testing ssh" %
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(ip, self.node.id))
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connect_kwargs = dict(key_filename=self.image.private_key)
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if not utils.ssh_connect(ip, self.image.username,
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connect_kwargs=connect_kwargs,
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timeout=self.timeout):
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raise Exception("Unable to connect via ssh")
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if statsd:
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dt = int((time.time() - start_time) * 1000)
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key = 'nodepool.launch.%s.%s.%s' % (self.image.name,
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self.provider.name,
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self.target.name)
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statsd.timing(key, dt)
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statsd.incr(key)
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# Do this before adding to jenkins to avoid a race where
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# Jenkins might immediately use the node before we've updated
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# the state:
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if self.target.jenkins_test_job:
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self.node.state = nodedb.TEST
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self.log.info("Node id: %s is in testing" % self.node.id)
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else:
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self.node.state = nodedb.READY
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self.log.info("Node id: %s is ready" % self.node.id)
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self.nodepool.updateStats(session, self.provider.name)
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if self.target.jenkins_url:
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self.log.debug("Adding node id: %s to jenkins" % self.node.id)
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self.createJenkinsNode()
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self.log.info("Node id: %s added to jenkins" % self.node.id)
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def createJenkinsNode(self):
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jenkins = self.nodepool.getJenkinsManager(self.target)
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args = dict(name=self.node.nodename,
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host=self.node.ip,
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description='Dynamic single use %s node' % self.image.name,
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executors=1,
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root='/home/jenkins')
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if not self.target.jenkins_test_job:
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args['labels'] = self.image.name
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if self.target.jenkins_credentials_id:
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args['credentials_id'] = self.target.jenkins_credentials_id
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else:
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args['username'] = self.image.username
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args['private_key'] = self.image.private_key
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jenkins.createNode(**args)
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if self.target.jenkins_test_job:
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params = dict(NODE=self.node.nodename)
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jenkins.startBuild(self.target.jenkins_test_job, params)
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class ImageUpdater(threading.Thread):
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log = logging.getLogger("nodepool.ImageUpdater")
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def __init__(self, nodepool, provider, image, snap_image_id):
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threading.Thread.__init__(self, name='ImageUpdater for %s' % snap_image_id)
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self.provider = provider
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self.image = image
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self.snap_image_id = snap_image_id
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self.nodepool = nodepool
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self.scriptdir = self.nodepool.config.scriptdir
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def run(self):
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try:
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self._run()
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except Exception:
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self.log.exception("Exception in run method:")
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def _run(self):
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with self.nodepool.getDB().getSession() as session:
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self.log.debug("Updating image %s in %s " % (self.image.name,
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self.provider.name))
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try:
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self.snap_image = session.getSnapshotImage(
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self.snap_image_id)
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self.manager = self.nodepool.getProviderManager(self.provider)
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except Exception:
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self.log.exception("Exception preparing to update image %s "
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"in %s:" % (self.image.name,
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self.provider.name))
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return
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try:
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self.updateImage(session)
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except Exception:
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self.log.exception("Exception updating image %s in %s:" %
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(self.image.name, self.provider.name))
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try:
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if self.snap_image:
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self.nodepool.deleteImage(self.snap_image)
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except Exception:
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self.log.exception("Exception deleting image id: %s:" %
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self.snap_image.id)
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return
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def updateImage(self, session):
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start_time = time.time()
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timestamp = int(start_time)
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hostname = ('%s-%s.template.openstack.org' %
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(self.image.name, str(timestamp)))
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self.log.info("Creating image id: %s for %s in %s" %
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(self.snap_image.id, self.image.name,
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self.provider.name))
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if self.manager.hasExtension('os-keypairs'):
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key_name = hostname.split('.')[0]
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key = self.manager.addKeypair(key_name)
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else:
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key_name = None
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key = None
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server_id = self.manager.createServer(hostname,
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self.image.min_ram,
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image_name=self.image.base_image,
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key_name=key_name)
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self.snap_image.hostname = hostname
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self.snap_image.version = timestamp
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self.snap_image.server_external_id = server_id
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session.commit()
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self.log.debug("Image id: %s waiting for server %s" %
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(self.snap_image.id, server_id))
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server = self.manager.waitForServer(server_id)
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if server['status'] != 'ACTIVE':
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raise Exception("Server %s for image id: %s status: %s" %
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(server_id, self.snap_image.id, server['status']))
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ip = server.get('public_v4')
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if not ip and self.manager.hasExtension('os-floating-ips'):
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ip = self.manager.addPublicIP(server['server_id'])
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if not ip:
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raise Exception("Unable to find public IP of server")
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server['public_v4'] = ip
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self.bootstrapServer(server, key)
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image_id = self.manager.createImage(server_id, hostname)
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self.snap_image.external_id = image_id
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session.commit()
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self.log.debug("Image id: %s building image %s" %
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(self.snap_image.id, image_id))
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# It can take a _very_ long time for Rackspace 1.0 to save an image
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self.manager.waitForImage(image_id, IMAGE_TIMEOUT)
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if statsd:
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dt = int((time.time() - start_time) * 1000)
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key = 'nodepool.image_update.%s.%s' % (self.image.name,
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self.provider.name)
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statsd.timing(key, dt)
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statsd.incr(key)
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self.snap_image.state = nodedb.READY
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session.commit()
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self.log.info("Image %s in %s is ready" % (hostname,
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self.provider.name))
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try:
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# We made the snapshot, try deleting the server, but it's okay
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# if we fail. The reap script will find it and try again.
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self.manager.cleanupServer(server_id)
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except:
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self.log.exception("Exception encountered deleting server"
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" %s for image id: %s" %
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(server_id, self.snap_image.id))
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def bootstrapServer(self, server, key):
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log = logging.getLogger("nodepool.image.build.%s.%s" %
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(self.provider.name, self.image.name))
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ssh_kwargs = dict(log=log)
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if key:
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ssh_kwargs['pkey'] = key
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else:
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ssh_kwargs['password'] = server['admin_pass']
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for username in ['root', 'ubuntu']:
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host = utils.ssh_connect(server['public_v4'], username,
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ssh_kwargs,
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timeout=CONNECT_TIMEOUT)
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if host:
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break
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|
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if not host:
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raise Exception("Unable to log in via SSH")
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|
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host.ssh("make scripts dir", "mkdir -p scripts")
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for fname in os.listdir(self.scriptdir):
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host.scp(os.path.join(self.scriptdir, fname), 'scripts/%s' % fname)
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host.ssh("move scripts to opt",
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"sudo mv scripts /opt/nodepool-scripts")
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host.ssh("set scripts permissions",
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"sudo chmod -R a+rx /opt/nodepool-scripts")
|
|
if self.image.setup:
|
|
env_vars = ''
|
|
for k, v in os.environ.items():
|
|
if k.startswith('NODEPOOL_'):
|
|
env_vars += ' %s="%s"' % (k, v)
|
|
host.ssh("run setup script",
|
|
"cd /opt/nodepool-scripts && %s ./%s" %
|
|
(env_vars, self.image.setup))
|
|
|
|
|
|
class ConfigValue(object):
|
|
pass
|
|
|
|
|
|
class Config(ConfigValue):
|
|
pass
|
|
|
|
|
|
class Provider(ConfigValue):
|
|
pass
|
|
|
|
|
|
class ProviderImage(ConfigValue):
|
|
pass
|
|
|
|
|
|
class Target(ConfigValue):
|
|
pass
|
|
|
|
|
|
class TargetImage(ConfigValue):
|
|
pass
|
|
|
|
|
|
class TargetImageProvider(ConfigValue):
|
|
pass
|
|
|
|
|
|
class Cron(ConfigValue):
|
|
pass
|
|
|
|
|
|
class ZMQPublisher(ConfigValue):
|
|
pass
|
|
|
|
|
|
class GearmanServer(ConfigValue):
|
|
pass
|
|
|
|
|
|
class NodePool(threading.Thread):
|
|
log = logging.getLogger("nodepool.NodePool")
|
|
|
|
def __init__(self, configfile):
|
|
threading.Thread.__init__(self, name='NodePool')
|
|
self.configfile = configfile
|
|
self._stopped = False
|
|
self.config = None
|
|
self.zmq_context = None
|
|
self.gearman_client = None
|
|
self.apsched = None
|
|
|
|
def stop(self):
|
|
self._stopped = True
|
|
if self.zmq_context:
|
|
self.zmq_context.destroy()
|
|
if self.apsched:
|
|
self.apsched.shutdown()
|
|
|
|
def loadConfig(self):
|
|
self.log.debug("Loading configuration")
|
|
config = yaml.load(open(self.configfile))
|
|
|
|
newconfig = Config()
|
|
newconfig.db = None
|
|
newconfig.dburi = None
|
|
newconfig.providers = {}
|
|
newconfig.targets = {}
|
|
newconfig.scriptdir = config.get('script-dir')
|
|
newconfig.dburi = config.get('dburi')
|
|
newconfig.provider_managers = {}
|
|
newconfig.jenkins_managers = {}
|
|
newconfig.zmq_publishers = {}
|
|
newconfig.gearman_servers = {}
|
|
newconfig.crons = {}
|
|
|
|
for name, default in [
|
|
('image-update', '14 2 * * *'),
|
|
('cleanup', '27 */6 * * *'),
|
|
('check', '*/15 * * * *'),
|
|
]:
|
|
c = Cron()
|
|
c.name = name
|
|
newconfig.crons[c.name] = c
|
|
c.job = None
|
|
c.timespec = config.get('cron', {}).get(name, default)
|
|
|
|
for addr in config['zmq-publishers']:
|
|
z = ZMQPublisher()
|
|
z.name = addr
|
|
z.listener = None
|
|
newconfig.zmq_publishers[z.name] = z
|
|
|
|
for server in config.get('gearman-servers', []):
|
|
g = GearmanServer()
|
|
g.host = server['host']
|
|
g.port = server.get('port', 4730)
|
|
g.name = g.host + '_' + str(g.port)
|
|
newconfig.gearman_servers[g.name] = g
|
|
|
|
for provider in config['providers']:
|
|
p = Provider()
|
|
p.name = provider['name']
|
|
newconfig.providers[p.name] = p
|
|
p.username = provider['username']
|
|
p.password = provider['password']
|
|
p.project_id = provider['project-id']
|
|
p.auth_url = provider['auth-url']
|
|
p.service_type = provider.get('service-type')
|
|
p.service_name = provider.get('service-name')
|
|
p.region_name = provider.get('region-name')
|
|
p.max_servers = provider['max-servers']
|
|
p.rate = provider.get('rate', 1.0)
|
|
p.boot_timeout = provider.get('boot-timeout', 60)
|
|
p.images = {}
|
|
for image in provider['images']:
|
|
i = ProviderImage()
|
|
i.name = image['name']
|
|
p.images[i.name] = i
|
|
i.base_image = image['base-image']
|
|
i.min_ram = image['min-ram']
|
|
i.setup = image.get('setup')
|
|
i.reset = image.get('reset')
|
|
i.username = image.get('username', 'jenkins')
|
|
i.private_key = image.get('private-key',
|
|
'/var/lib/jenkins/.ssh/id_rsa')
|
|
|
|
for target in config['targets']:
|
|
t = Target()
|
|
t.name = target['name']
|
|
newconfig.targets[t.name] = t
|
|
jenkins = target.get('jenkins')
|
|
t.online = True
|
|
if jenkins:
|
|
t.jenkins_url = jenkins['url']
|
|
t.jenkins_user = jenkins['user']
|
|
t.jenkins_apikey = jenkins['apikey']
|
|
t.jenkins_credentials_id = jenkins.get('credentials-id')
|
|
t.jenkins_test_job = jenkins.get('test-job')
|
|
else:
|
|
t.jenkins_url = None
|
|
t.jenkins_user = None
|
|
t.jenkins_apikey = None
|
|
t.jenkins_credentials_id = None
|
|
t.jenkins_test_job = None
|
|
t.rate = target.get('rate', 1.0)
|
|
t.images = {}
|
|
for image in target['images']:
|
|
i = TargetImage()
|
|
i.name = image['name']
|
|
t.images[i.name] = i
|
|
i.providers = {}
|
|
i.min_ready = image['min-ready']
|
|
for provider in image['providers']:
|
|
p = TargetImageProvider()
|
|
p.name = provider['name']
|
|
i.providers[p.name] = p
|
|
|
|
return newconfig
|
|
|
|
def reconfigureDatabase(self, config):
|
|
if (not self.config) or config.dburi != self.config.dburi:
|
|
config.db = nodedb.NodeDatabase(config.dburi)
|
|
else:
|
|
config.db = self.config.db
|
|
|
|
def reconfigureManagers(self, config):
|
|
stop_managers = []
|
|
for p in config.providers.values():
|
|
oldmanager = None
|
|
if self.config:
|
|
oldmanager = self.config.provider_managers.get(p.name)
|
|
if oldmanager:
|
|
if (p.username != oldmanager.provider.username or
|
|
p.password != oldmanager.provider.password or
|
|
p.project_id != oldmanager.provider.project_id or
|
|
p.auth_url != oldmanager.provider.auth_url or
|
|
p.service_type != oldmanager.provider.service_type or
|
|
p.service_name != oldmanager.provider.service_name or
|
|
p.max_servers != oldmanager.provider.max_servers or
|
|
p.rate != oldmanager.provider.rate or
|
|
p.boot_timeout != oldmanager.provider.boot_timeout):
|
|
stop_managers.append(oldmanager)
|
|
oldmanager = None
|
|
if oldmanager:
|
|
config.provider_managers[p.name] = oldmanager
|
|
else:
|
|
self.log.debug("Creating new ProviderManager object for %s" %
|
|
p.name)
|
|
config.provider_managers[p.name] = \
|
|
provider_manager.ProviderManager(p)
|
|
config.provider_managers[p.name].start()
|
|
|
|
for t in config.targets.values():
|
|
oldmanager = None
|
|
if self.config:
|
|
oldmanager = self.config.jenkins_managers.get(t.name)
|
|
if oldmanager:
|
|
if (t.jenkins_url != oldmanager.target.jenkins_url or
|
|
t.jenkins_user != oldmanager.target.jenkins_user or
|
|
t.jenkins_apikey != oldmanager.target.jenkins_apikey):
|
|
stop_managers.append(oldmanager)
|
|
oldmanager = None
|
|
if oldmanager:
|
|
config.jenkins_managers[t.name] = oldmanager
|
|
else:
|
|
self.log.debug("Creating new JenkinsManager object for %s" %
|
|
t.name)
|
|
config.jenkins_managers[t.name] = \
|
|
jenkins_manager.JenkinsManager(t)
|
|
config.jenkins_managers[t.name].start()
|
|
for oldmanager in stop_managers:
|
|
oldmanager.stop()
|
|
|
|
for t in config.targets.values():
|
|
try:
|
|
info = config.jenkins_managers[t.name].getInfo()
|
|
if info['quietingDown']:
|
|
self.log.info("Target %s is offline" % t.name)
|
|
t.online = False
|
|
else:
|
|
t.online = True
|
|
except Exception:
|
|
self.log.exception("Unable to check status of %s" % t.name)
|
|
t.online = False
|
|
|
|
def reconfigureCrons(self, config):
|
|
cron_map = {
|
|
'image-update': self._doUpdateImages,
|
|
'cleanup': self._doPeriodicCleanup,
|
|
'check': self._doPeriodicCheck,
|
|
}
|
|
|
|
if not self.apsched:
|
|
self.apsched = apscheduler.scheduler.Scheduler()
|
|
self.apsched.start()
|
|
|
|
for c in config.crons.values():
|
|
if ((not self.config) or
|
|
c.timespec != self.config.crons[c.name].timespec):
|
|
if self.config and self.config.crons[c.name].job:
|
|
self.apsched.unschedule_job(self.config.crons[c.name].job)
|
|
parts = c.timespec.split()
|
|
minute, hour, dom, month, dow = parts[:5]
|
|
c.job = self.apsched.add_cron_job(
|
|
cron_map[c.name],
|
|
day=dom,
|
|
day_of_week=dow,
|
|
hour=hour,
|
|
minute=minute)
|
|
else:
|
|
c.job = self.config.crons[c.name].job
|
|
|
|
def reconfigureUpdateListeners(self, config):
|
|
if self.config:
|
|
running = set(self.config.zmq_publishers.keys())
|
|
else:
|
|
running = set()
|
|
|
|
configured = set(config.zmq_publishers.keys())
|
|
if running == configured:
|
|
self.log.debug("ZMQ Listeners do not need to be updated")
|
|
config.zmq_publishers = self.config.zmq_publishers
|
|
return
|
|
|
|
if self.zmq_context:
|
|
self.log.debug("Stopping listeners")
|
|
self.zmq_context.destroy()
|
|
self.zmq_context = zmq.Context()
|
|
for z in config.zmq_publishers.values():
|
|
self.log.debug("Starting listener for %s" % z.name)
|
|
z.listener = NodeUpdateListener(self, z.name)
|
|
z.listener.start()
|
|
|
|
def reconfigureGearmanClient(self, config):
|
|
if self.config:
|
|
running = set(self.config.gearman_servers.keys())
|
|
else:
|
|
running = set()
|
|
|
|
configured = set(config.gearman_servers.keys())
|
|
if running == configured:
|
|
self.log.debug("Gearman client does not need to be updated")
|
|
if self.config:
|
|
config.gearman_servers = self.config.gearman_servers
|
|
return
|
|
|
|
if self.gearman_client:
|
|
self.log.debug("Stopping gearman client")
|
|
self.gearman_client.shutdown()
|
|
self.gearman_client = None
|
|
if configured:
|
|
self.gearman_client = GearmanClient()
|
|
for g in config.gearman_servers.values():
|
|
self.log.debug("Adding gearman server %s" % g.name)
|
|
self.gearman_client.addServer(g.host, g.port)
|
|
self.gearman_client.waitForServer()
|
|
|
|
def setConfig(self, config):
|
|
self.config = config
|
|
|
|
def getDB(self):
|
|
return self.config.db
|
|
|
|
def getProviderManager(self, provider):
|
|
return self.config.provider_managers[provider.name]
|
|
|
|
def getJenkinsManager(self, target):
|
|
return self.config.jenkins_managers[target.name]
|
|
|
|
def getNeededNodes(self, session):
|
|
self.log.debug("Beginning node launch calculation")
|
|
# Get the current demand for nodes.
|
|
if self.gearman_client:
|
|
image_demand = self.gearman_client.getNeededWorkers()
|
|
else:
|
|
image_demand = {}
|
|
|
|
for name, demand in image_demand.items():
|
|
self.log.debug(" Demand from gearman: %s: %s" % (name, demand))
|
|
|
|
# Make sure that the current demand includes at least the
|
|
# configured min_ready values
|
|
total_image_min_ready = {}
|
|
online_targets = set()
|
|
for target in self.config.targets.values():
|
|
if not target.online:
|
|
continue
|
|
online_targets.add(target.name)
|
|
for image in target.images.values():
|
|
min_ready = total_image_min_ready.get(image.name, 0)
|
|
min_ready += image.min_ready
|
|
total_image_min_ready[image.name] = min_ready
|
|
|
|
def count_nodes(image_name, state):
|
|
nodes = session.getNodes(image_name=image_name,
|
|
state=state)
|
|
return len([n for n in nodes
|
|
if n.target_name in online_targets])
|
|
|
|
# Actual need is demand - (ready + building)
|
|
for image_name in total_image_min_ready:
|
|
start_demand = image_demand.get(image_name, 0)
|
|
min_demand = max(start_demand, total_image_min_ready[image_name])
|
|
n_ready = count_nodes(image_name, nodedb.READY)
|
|
n_building = count_nodes(image_name, nodedb.BUILDING)
|
|
n_test = count_nodes(image_name, nodedb.TEST)
|
|
ready = n_ready + n_building + n_test
|
|
demand = max(min_demand - ready, 0)
|
|
image_demand[image_name] = demand
|
|
self.log.debug(" Deficit: %s: %s (start: %s min: %s ready: %s)" %
|
|
(image_name, demand, start_demand, min_demand,
|
|
ready))
|
|
|
|
# Start setting up the allocation system. Add a provider for
|
|
# each node provider, along with current capacity
|
|
allocation_providers = {}
|
|
for provider in self.config.providers.values():
|
|
provider_max = provider.max_servers
|
|
n_provider = len(session.getNodes(provider.name))
|
|
available = provider_max - n_provider
|
|
ap = allocation.AllocationProvider(provider.name, available)
|
|
allocation_providers[provider.name] = ap
|
|
|
|
# "Target-Image-Provider" -- the triplet of info that identifies
|
|
# the source and location of each node. The mapping is
|
|
# AllocationSubRequestTarget -> TargetImageProvider, because
|
|
# the allocation system produces ASRTs as the final product.
|
|
tips = {}
|
|
# image_name -> AllocationRequest
|
|
allocation_requests = {}
|
|
# Set up the request values in the allocation system
|
|
for target in self.config.targets.values():
|
|
if not target.online:
|
|
continue
|
|
at = allocation.AllocationTarget(target.name)
|
|
for image in target.images.values():
|
|
ar = allocation_requests.get(image.name)
|
|
if not ar:
|
|
# A request for a certain number of nodes of this
|
|
# image type. We may have already started a
|
|
# request from a previous target-image in this
|
|
# loop.
|
|
ar = allocation.AllocationRequest(image.name,
|
|
image_demand[image.name])
|
|
allocation_requests[image.name] = ar
|
|
ar.addTarget(at, image.min_ready)
|
|
for provider in image.providers.values():
|
|
# This request may be supplied by this provider
|
|
# (and nodes from this provider supplying this
|
|
# request should be distributed to this target).
|
|
sr, asrt = ar.addProvider(
|
|
allocation_providers[provider.name], at)
|
|
tips[asrt] = provider
|
|
|
|
self.log.debug(" Allocation requests:")
|
|
for ar in allocation_requests.values():
|
|
self.log.debug(' %s' % ar)
|
|
for sr in ar.sub_requests.values():
|
|
self.log.debug(' %s' % sr)
|
|
|
|
nodes_to_launch = {}
|
|
|
|
# Let the allocation system do it's thing, and then examine
|
|
# the ASRT objects that it produces.
|
|
self.log.debug(" Grants:")
|
|
for ap in allocation_providers.values():
|
|
ap.makeGrants()
|
|
for g in ap.grants:
|
|
self.log.debug(' %s' % g)
|
|
for asrt in g.targets:
|
|
self.log.debug(' %s' % asrt)
|
|
tip = tips[asrt]
|
|
nodes_to_launch[tip] = asrt.amount
|
|
|
|
self.log.debug("Finished node launch calculation")
|
|
return nodes_to_launch
|
|
|
|
def run(self):
|
|
while not self._stopped:
|
|
try:
|
|
config = self.loadConfig()
|
|
self.reconfigureDatabase(config)
|
|
self.reconfigureManagers(config)
|
|
self.reconfigureCrons(config)
|
|
self.reconfigureUpdateListeners(config)
|
|
self.reconfigureGearmanClient(config)
|
|
self.setConfig(config)
|
|
|
|
with self.getDB().getSession() as session:
|
|
self._run(session)
|
|
except Exception:
|
|
self.log.exception("Exception in main loop:")
|
|
time.sleep(WATERMARK_SLEEP)
|
|
|
|
def _run(self, session):
|
|
self.checkForMissingImages(session)
|
|
nodes_to_launch = self.getNeededNodes(session)
|
|
for target in self.config.targets.values():
|
|
if not target.online:
|
|
continue
|
|
self.log.debug("Examining target: %s" % target.name)
|
|
for image in target.images.values():
|
|
for provider in image.providers.values():
|
|
num_to_launch = nodes_to_launch.get(provider, 0)
|
|
if num_to_launch:
|
|
self.log.info("Need to launch %s %s nodes for "
|
|
"%s on %s" %
|
|
(num_to_launch, image.name,
|
|
target.name, provider.name))
|
|
for i in range(num_to_launch):
|
|
snap_image = session.getCurrentSnapshotImage(
|
|
provider.name, image.name)
|
|
if not snap_image:
|
|
self.log.debug("No current image for %s on %s"
|
|
% (provider.name, image.name))
|
|
else:
|
|
self.launchNode(session, provider, image, target)
|
|
|
|
def checkForMissingImages(self, session):
|
|
# If we are missing an image, run the image update function
|
|
# outside of its schedule.
|
|
for target in self.config.targets.values():
|
|
for image in target.images.values():
|
|
for provider in image.providers.values():
|
|
found = False
|
|
for snap_image in session.getSnapshotImages():
|
|
if (snap_image.provider_name == provider.name and
|
|
snap_image.image_name == image.name and
|
|
snap_image.state in [nodedb.READY,
|
|
nodedb.BUILDING]):
|
|
found = True
|
|
if not found:
|
|
self.log.warning("Missing image %s on %s" %
|
|
(image.name, provider.name))
|
|
self.updateImage(session, provider, image)
|
|
|
|
def _doUpdateImages(self):
|
|
try:
|
|
with self.getDB().getSession() as session:
|
|
self.updateImages(session)
|
|
except Exception:
|
|
self.log.exception("Exception in periodic image update:")
|
|
|
|
def updateImages(self, session):
|
|
# This function should be run periodically to create new snapshot
|
|
# images.
|
|
for provider in self.config.providers.values():
|
|
for image in provider.images.values():
|
|
self.updateImage(session, provider, image)
|
|
|
|
def updateImage(self, session, provider, image):
|
|
provider = self.config.providers[provider.name]
|
|
image = provider.images[image.name]
|
|
snap_image = session.createSnapshotImage(
|
|
provider_name=provider.name,
|
|
image_name=image.name)
|
|
t = ImageUpdater(self, provider, image, snap_image.id)
|
|
t.start()
|
|
# Enough time to give them different timestamps (versions)
|
|
# Just to keep things clearer.
|
|
time.sleep(2)
|
|
return t
|
|
|
|
def launchNode(self, session, provider, image, target):
|
|
provider = self.config.providers[provider.name]
|
|
image = provider.images[image.name]
|
|
timeout = provider.boot_timeout
|
|
node = session.createNode(provider.name, image.name, target.name)
|
|
t = NodeLauncher(self, provider, image, target, node.id, timeout)
|
|
t.start()
|
|
|
|
def deleteNode(self, session, node):
|
|
# Delete a node
|
|
start_time = time.time()
|
|
node.state = nodedb.DELETE
|
|
self.updateStats(session, node.provider_name)
|
|
provider = self.config.providers[node.provider_name]
|
|
target = self.config.targets[node.target_name]
|
|
manager = self.getProviderManager(provider)
|
|
|
|
if target.jenkins_url:
|
|
jenkins = self.getJenkinsManager(target)
|
|
jenkins_name = node.nodename
|
|
if jenkins.nodeExists(jenkins_name):
|
|
jenkins.deleteNode(jenkins_name)
|
|
self.log.info("Deleted jenkins node id: %s" % node.id)
|
|
|
|
if node.external_id:
|
|
try:
|
|
server = manager.getServer(node.external_id)
|
|
self.log.debug('Deleting server %s for node id: %s' %
|
|
(node.external_id,
|
|
node.id))
|
|
manager.cleanupServer(server['id'])
|
|
except provider_manager.NotFound:
|
|
pass
|
|
|
|
node.delete()
|
|
self.log.info("Deleted node id: %s" % node.id)
|
|
|
|
if statsd:
|
|
dt = int((time.time() - start_time) * 1000)
|
|
key = 'nodepool.delete.%s.%s.%s' % (node.image_name,
|
|
node.provider_name,
|
|
node.target_name)
|
|
statsd.timing(key, dt)
|
|
statsd.incr(key)
|
|
self.updateStats(session, node.provider_name)
|
|
|
|
def deleteImage(self, snap_image):
|
|
# Delete an image (and its associated server)
|
|
snap_image.state = nodedb.DELETE
|
|
provider = self.config.providers[snap_image.provider_name]
|
|
manager = self.getProviderManager(provider)
|
|
|
|
if snap_image.server_external_id:
|
|
try:
|
|
server = manager.getServer(snap_image.server_external_id)
|
|
self.log.debug('Deleting server %s for image id: %s' %
|
|
(snap_image.server_external_id,
|
|
snap_image.id))
|
|
manager.cleanupServer(server['id'])
|
|
except provider_manager.NotFound:
|
|
self.log.warning('Image server id %s not found' %
|
|
snap_image.server_external_id)
|
|
|
|
if snap_image.external_id:
|
|
try:
|
|
remote_image = manager.getImage(snap_image.external_id)
|
|
self.log.debug('Deleting image %s' % remote_image['id'])
|
|
manager.deleteImage(remote_image['id'])
|
|
except provider_manager.NotFound:
|
|
self.log.warning('Image id %s not found' %
|
|
snap_image.external_id)
|
|
|
|
snap_image.delete()
|
|
self.log.info("Deleted image id: %s" % snap_image.id)
|
|
|
|
def _doPeriodicCleanup(self):
|
|
try:
|
|
with self.getDB().getSession() as session:
|
|
self.periodicCleanup(session)
|
|
except Exception:
|
|
self.log.exception("Exception in periodic cleanup:")
|
|
|
|
def periodicCleanup(self, session):
|
|
# This function should be run periodically to clean up any hosts
|
|
# that may have slipped through the cracks, as well as to remove
|
|
# old images.
|
|
|
|
self.log.debug("Starting periodic cleanup")
|
|
for node in session.getNodes():
|
|
if node.state in [nodedb.READY, nodedb.HOLD]:
|
|
continue
|
|
delete = False
|
|
now = time.time()
|
|
if (node.state == nodedb.DELETE):
|
|
self.log.warning("Deleting node id: %s which is in delete "
|
|
"state" % node.id)
|
|
delete = True
|
|
elif (node.state == nodedb.TEST and
|
|
(now - node.state_time) > TEST_CLEANUP):
|
|
self.log.warning("Deleting node id: %s which has been in %s "
|
|
"state for %s hours" %
|
|
(node.id, node.state,
|
|
(now - node.state_time) / (60 * 60)))
|
|
delete = True
|
|
elif (now - node.state_time) > NODE_CLEANUP:
|
|
self.log.warning("Deleting node id: %s which has been in %s "
|
|
"state for %s hours" %
|
|
(node.id, node.state,
|
|
(now - node.state_time) / (60 * 60)))
|
|
delete = True
|
|
if delete:
|
|
try:
|
|
self.deleteNode(session, node)
|
|
except Exception:
|
|
self.log.exception("Exception deleting node id: "
|
|
"%s" % node.id)
|
|
|
|
for image in session.getSnapshotImages():
|
|
# Normally, reap images that have sat in their current state
|
|
# for 24 hours, unless the image is the current snapshot
|
|
delete = False
|
|
now = time.time()
|
|
if image.provider_name not in self.config.providers:
|
|
delete = True
|
|
self.log.info("Deleting image id: %s which has no current "
|
|
"provider" % image.id)
|
|
elif (image.image_name not in
|
|
self.config.providers[image.provider_name].images):
|
|
delete = True
|
|
self.log.info("Deleting image id: %s which has no current "
|
|
"base image" % image.id)
|
|
else:
|
|
current = session.getCurrentSnapshotImage(image.provider_name,
|
|
image.image_name)
|
|
if (current and image != current and
|
|
(now - image.state_time) > KEEP_OLD_IMAGE):
|
|
self.log.info("Deleting non-current image id: %s because "
|
|
"the image is %s hours old" %
|
|
(image.id,
|
|
(now - image.state_time) / (60 * 60)))
|
|
delete = True
|
|
if delete:
|
|
try:
|
|
self.deleteImage(image)
|
|
except Exception:
|
|
self.log.exception("Exception deleting image id: %s:" %
|
|
image.id)
|
|
self.log.debug("Finished periodic cleanup")
|
|
|
|
def _doPeriodicCheck(self):
|
|
try:
|
|
with self.getDB().getSession() as session:
|
|
self.periodicCheck(session)
|
|
except Exception:
|
|
self.log.exception("Exception in periodic chack:")
|
|
|
|
def periodicCheck(self, session):
|
|
# This function should be run periodically to make sure we can
|
|
# still access hosts via ssh.
|
|
|
|
self.log.debug("Starting periodic check")
|
|
for node in session.getNodes():
|
|
if node.state != nodedb.READY:
|
|
continue
|
|
try:
|
|
provider = self.config.providers[node.provider_name]
|
|
image = provider.images[node.image_name]
|
|
connect_kwargs = dict(key_filename=image.private_key)
|
|
if utils.ssh_connect(node.ip, image.username,
|
|
connect_kwargs=connect_kwargs):
|
|
continue
|
|
except Exception:
|
|
self.log.exception("SSH Check failed for node id: %s" %
|
|
node.id)
|
|
self.deleteNode(session, node)
|
|
self.log.debug("Finished periodic check")
|
|
|
|
def updateStats(self, session, provider_name):
|
|
if not statsd:
|
|
return
|
|
# This may be called outside of the main thread.
|
|
provider = self.config.providers[provider_name]
|
|
|
|
states = {}
|
|
|
|
for target in self.config.targets.values():
|
|
for image in target.images.values():
|
|
image_key = 'nodepool.target.%s.%s' % (
|
|
target.name, image.name)
|
|
key = '%s.min_ready' % image_key
|
|
statsd.gauge(key, image.min_ready)
|
|
for provider in image.providers.values():
|
|
provider_key = '%s.%s' % (
|
|
image_key, provider.name)
|
|
for state in nodedb.STATE_NAMES.values():
|
|
key = '%s.%s' % (provider_key, state)
|
|
states[key] = 0
|
|
|
|
for node in session.getNodes():
|
|
if node.state not in nodedb.STATE_NAMES:
|
|
continue
|
|
key = 'nodepool.target.%s.%s.%s.%s' % (
|
|
node.target_name, node.image_name,
|
|
node.provider_name, nodedb.STATE_NAMES[node.state])
|
|
if key not in states:
|
|
states[key] = 0
|
|
states[key] += 1
|
|
|
|
for key, count in states.items():
|
|
statsd.gauge(key, count)
|
|
|
|
for provider in self.config.providers.values():
|
|
key = 'nodepool.provider.%s.max_servers' % provider.name
|
|
statsd.gauge(key, provider.max_servers)
|