1359 lines
52 KiB
Python
1359 lines
52 KiB
Python
# Copyright 2014 OpenStack Foundation
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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 collections
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import json
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import logging
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import os
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import shutil
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import signal
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import shlex
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import socket
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import subprocess
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import tempfile
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import threading
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import time
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import traceback
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from zuul.lib.yamlutil import yaml
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from zuul.lib.config import get_default
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import gear
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import zuul.merger.merger
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import zuul.ansible
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from zuul.lib import commandsocket
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COMMANDS = ['stop', 'pause', 'unpause', 'graceful', 'verbose',
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'unverbose', 'keep', 'nokeep']
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class Watchdog(object):
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def __init__(self, timeout, function, args):
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self.timeout = timeout
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self.function = function
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self.args = args
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self.thread = threading.Thread(target=self._run,
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name='executor-watchdog')
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self.thread.daemon = True
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self.timed_out = None
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def _run(self):
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while self._running and time.time() < self.end:
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time.sleep(10)
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if self._running:
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self.timed_out = True
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self.function(*self.args)
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else:
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# Only set timed_out to false if we aren't _running
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# anymore. This means that we stopped running not because
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# of a timeout but because normal execution ended.
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self.timed_out = False
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def start(self):
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self._running = True
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self.end = time.time() + self.timeout
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self.thread.start()
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def stop(self):
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self._running = False
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class JobDirPlaybook(object):
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def __init__(self, root):
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self.root = root
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self.trusted = None
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self.path = None
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class SshAgent(object):
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log = logging.getLogger("zuul.ExecutorServer")
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def __init__(self):
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self.env = {}
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self.ssh_agent = None
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def start(self):
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if self.ssh_agent:
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return
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with open('/dev/null', 'r+') as devnull:
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ssh_agent = subprocess.Popen(['ssh-agent'], close_fds=True,
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stdout=subprocess.PIPE,
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stderr=devnull,
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stdin=devnull)
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(output, _) = ssh_agent.communicate()
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output = output.decode('utf8')
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for line in output.split("\n"):
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if '=' in line:
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line = line.split(";", 1)[0]
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(key, value) = line.split('=')
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self.env[key] = value
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self.log.info('Started SSH Agent, {}'.format(self.env))
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def stop(self):
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if 'SSH_AGENT_PID' in self.env:
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try:
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os.kill(int(self.env['SSH_AGENT_PID']), signal.SIGTERM)
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except OSError:
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self.log.exception(
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'Problem sending SIGTERM to agent {}'.format(self.env))
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self.log.info('Sent SIGTERM to SSH Agent, {}'.format(self.env))
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self.env = {}
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def add(self, key_path):
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env = os.environ.copy()
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env.update(self.env)
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key_path = os.path.expanduser(key_path)
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self.log.debug('Adding SSH Key {}'.format(key_path))
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output = ''
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try:
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output = subprocess.check_output(['ssh-add', key_path], env=env,
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stderr=subprocess.PIPE)
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except subprocess.CalledProcessError:
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self.log.error('ssh-add failed: {}'.format(output))
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raise
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self.log.info('Added SSH Key {}'.format(key_path))
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def remove(self, key_path):
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env = os.environ.copy()
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env.update(self.env)
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key_path = os.path.expanduser(key_path)
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self.log.debug('Removing SSH Key {}'.format(key_path))
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subprocess.check_output(['ssh-add', '-d', key_path], env=env,
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stderr=subprocess.PIPE)
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self.log.info('Removed SSH Key {}'.format(key_path))
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def list(self):
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if 'SSH_AUTH_SOCK' not in self.env:
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return None
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env = os.environ.copy()
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env.update(self.env)
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result = []
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for line in subprocess.Popen(['ssh-add', '-L'], env=env,
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stdout=subprocess.PIPE).stdout:
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line = line.decode('utf8')
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if line.strip() == 'The agent has no identities.':
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break
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result.append(line.strip())
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return result
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class JobDir(object):
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def __init__(self, root, keep, build_uuid):
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'''
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:param str root: Root directory for the individual job directories.
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Can be None to use the default system temp root directory.
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:param bool keep: If True, do not delete the job directory.
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:param str build_uuid: The unique build UUID. If supplied, this will
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be used as the temp job directory name. Using this will help the
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log streaming daemon find job logs.
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'''
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# root
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# ansible
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# trusted.cfg
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# untrusted.cfg
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# work
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# src
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# logs
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self.keep = keep
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if root:
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tmpdir = root
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else:
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tmpdir = tempfile.gettempdir()
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self.root = os.path.join(tmpdir, build_uuid)
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os.mkdir(self.root, 0o700)
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# Work
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self.work_root = os.path.join(self.root, 'work')
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os.makedirs(self.work_root)
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self.src_root = os.path.join(self.work_root, 'src')
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os.makedirs(self.src_root)
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self.log_root = os.path.join(self.work_root, 'logs')
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os.makedirs(self.log_root)
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# Ansible
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self.ansible_root = os.path.join(self.root, 'ansible')
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os.makedirs(self.ansible_root)
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ssh_dir = os.path.join(self.work_root, '.ssh')
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os.mkdir(ssh_dir, 0o700)
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self.known_hosts = os.path.join(ssh_dir, 'known_hosts')
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self.inventory = os.path.join(self.ansible_root, 'inventory.yaml')
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self.playbooks = [] # The list of candidate playbooks
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self.playbook = None # A pointer to the candidate we have chosen
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self.pre_playbooks = []
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self.post_playbooks = []
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self.roles = []
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self.trusted_roles_path = []
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self.untrusted_roles_path = []
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self.untrusted_config = os.path.join(
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self.ansible_root, 'untrusted.cfg')
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self.trusted_config = os.path.join(self.ansible_root, 'trusted.cfg')
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self.job_output_file = os.path.join(self.log_root, 'job-output.txt')
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def addPrePlaybook(self):
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count = len(self.pre_playbooks)
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root = os.path.join(self.ansible_root, 'pre_playbook_%i' % (count,))
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os.makedirs(root)
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playbook = JobDirPlaybook(root)
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self.pre_playbooks.append(playbook)
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return playbook
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def addPostPlaybook(self):
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count = len(self.post_playbooks)
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root = os.path.join(self.ansible_root, 'post_playbook_%i' % (count,))
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os.makedirs(root)
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playbook = JobDirPlaybook(root)
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self.post_playbooks.append(playbook)
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return playbook
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def addPlaybook(self):
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count = len(self.playbooks)
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root = os.path.join(self.ansible_root, 'playbook_%i' % (count,))
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os.makedirs(root)
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playbook = JobDirPlaybook(root)
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self.playbooks.append(playbook)
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return playbook
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def addRole(self):
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count = len(self.roles)
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root = os.path.join(self.ansible_root, 'role_%i' % (count,))
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os.makedirs(root)
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trusted = os.path.join(root, 'trusted')
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os.makedirs(trusted)
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untrusted = os.path.join(root, 'untrusted')
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os.makedirs(untrusted)
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self.roles.append(root)
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return root
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def cleanup(self):
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if not self.keep:
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shutil.rmtree(self.root)
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def __enter__(self):
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return self
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def __exit__(self, etype, value, tb):
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self.cleanup()
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class UpdateTask(object):
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def __init__(self, connection_name, project_name):
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self.connection_name = connection_name
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self.project_name = project_name
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self.event = threading.Event()
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def __eq__(self, other):
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if (other and other.connection_name == self.connection_name and
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other.project_name == self.project_name):
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return True
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return False
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def wait(self):
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self.event.wait()
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def setComplete(self):
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self.event.set()
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class DeduplicateQueue(object):
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def __init__(self):
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self.queue = collections.deque()
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self.condition = threading.Condition()
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def qsize(self):
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return len(self.queue)
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def put(self, item):
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# Returns the original item if added, or an equivalent item if
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# already enqueued.
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self.condition.acquire()
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ret = None
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try:
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for x in self.queue:
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if item == x:
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ret = x
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if ret is None:
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ret = item
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self.queue.append(item)
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self.condition.notify()
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finally:
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self.condition.release()
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return ret
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def get(self):
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self.condition.acquire()
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try:
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while True:
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try:
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ret = self.queue.popleft()
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return ret
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except IndexError:
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pass
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self.condition.wait()
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finally:
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self.condition.release()
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def _copy_ansible_files(python_module, target_dir):
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library_path = os.path.dirname(os.path.abspath(python_module.__file__))
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for fn in os.listdir(library_path):
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if fn == "__pycache__":
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continue
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full_path = os.path.join(library_path, fn)
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if os.path.isdir(full_path):
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shutil.copytree(full_path, os.path.join(target_dir, fn))
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else:
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shutil.copy(os.path.join(library_path, fn), target_dir)
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def make_inventory_dict(nodes, groups, all_vars):
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hosts = {}
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for node in nodes:
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hosts[node['name']] = node['host_vars']
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inventory = {
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'all': {
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'hosts': hosts,
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'vars': all_vars,
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}
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}
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for group in groups:
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group_hosts = {}
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for node_name in group['nodes']:
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# children is a dict with None as values because we don't have
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# and per-group variables. If we did, None would be a dict
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# with the per-group variables
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group_hosts[node_name] = None
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inventory[group['name']] = {'hosts': group_hosts}
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return inventory
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class ExecutorMergeWorker(gear.TextWorker):
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def __init__(self, executor_server, *args, **kw):
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self.zuul_executor_server = executor_server
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super(ExecutorMergeWorker, self).__init__(*args, **kw)
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def handleNoop(self, packet):
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# Wait until the update queue is empty before responding
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while self.zuul_executor_server.update_queue.qsize():
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time.sleep(1)
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with self.zuul_executor_server.merger_lock:
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super(ExecutorMergeWorker, self).handleNoop(packet)
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class ExecutorServer(object):
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log = logging.getLogger("zuul.ExecutorServer")
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def __init__(self, config, connections={}, jobdir_root=None,
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keep_jobdir=False):
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self.config = config
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self.keep_jobdir = keep_jobdir
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self.jobdir_root = jobdir_root
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# TODOv3(mordred): make the executor name more unique --
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# perhaps hostname+pid.
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self.hostname = socket.gethostname()
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self.zuul_url = config.get('merger', 'zuul_url')
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self.merger_lock = threading.Lock()
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self.verbose = False
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self.command_map = dict(
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stop=self.stop,
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pause=self.pause,
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unpause=self.unpause,
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graceful=self.graceful,
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verbose=self.verboseOn,
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unverbose=self.verboseOff,
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keep=self.keep,
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nokeep=self.nokeep,
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)
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self.merge_root = get_default(self.config, 'executor', 'git_dir',
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'/var/lib/zuul/executor-git')
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self.default_username = get_default(self.config, 'executor',
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'default_username', 'zuul')
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self.merge_email = get_default(self.config, 'merger', 'git_user_email')
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self.merge_name = get_default(self.config, 'merger', 'git_user_name')
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execution_wrapper_name = get_default(self.config, 'executor',
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'execution_wrapper', 'bubblewrap')
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self.execution_wrapper = connections.drivers[execution_wrapper_name]
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self.connections = connections
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# This merger and its git repos are used to maintain
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# up-to-date copies of all the repos that are used by jobs, as
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# well as to support the merger:cat functon to supply
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# configuration information to Zuul when it starts.
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self.merger = self._getMerger(self.merge_root)
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self.update_queue = DeduplicateQueue()
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state_dir = get_default(self.config, 'zuul', 'state_dir',
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'/var/lib/zuul', expand_user=True)
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path = os.path.join(state_dir, 'executor.socket')
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self.command_socket = commandsocket.CommandSocket(path)
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ansible_dir = os.path.join(state_dir, 'ansible')
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self.ansible_dir = ansible_dir
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if os.path.exists(ansible_dir):
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shutil.rmtree(ansible_dir)
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zuul_dir = os.path.join(ansible_dir, 'zuul')
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plugin_dir = os.path.join(zuul_dir, 'ansible')
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os.makedirs(plugin_dir, mode=0o0755)
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self.library_dir = os.path.join(plugin_dir, 'library')
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self.action_dir = os.path.join(plugin_dir, 'action')
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self.callback_dir = os.path.join(plugin_dir, 'callback')
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self.lookup_dir = os.path.join(plugin_dir, 'lookup')
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_copy_ansible_files(zuul.ansible, plugin_dir)
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# We're copying zuul.ansible.* into a directory we are going
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# to add to pythonpath, so our plugins can "import
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# zuul.ansible". But we're not installing all of zuul, so
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# create a __init__.py file for the stub "zuul" module.
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with open(os.path.join(zuul_dir, '__init__.py'), 'w'):
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pass
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self.job_workers = {}
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def _getMerger(self, root, logger=None):
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if root != self.merge_root:
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cache_root = self.merge_root
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else:
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cache_root = None
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return zuul.merger.merger.Merger(root, self.connections,
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self.merge_email, self.merge_name,
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cache_root, logger)
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def start(self):
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self._running = True
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self._command_running = True
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server = self.config.get('gearman', 'server')
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port = get_default(self.config, 'gearman', 'port', 4730)
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ssl_key = get_default(self.config, 'gearman', 'ssl_key')
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ssl_cert = get_default(self.config, 'gearman', 'ssl_cert')
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ssl_ca = get_default(self.config, 'gearman', 'ssl_ca')
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self.merger_worker = ExecutorMergeWorker(self, 'Zuul Executor Merger')
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self.merger_worker.addServer(server, port, ssl_key, ssl_cert, ssl_ca)
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self.executor_worker = gear.TextWorker('Zuul Executor Server')
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self.executor_worker.addServer(server, port, ssl_key, ssl_cert, ssl_ca)
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self.log.debug("Waiting for server")
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self.merger_worker.waitForServer()
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self.executor_worker.waitForServer()
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self.log.debug("Registering")
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self.register()
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self.log.debug("Starting command processor")
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self.command_socket.start()
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self.command_thread = threading.Thread(target=self.runCommand)
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self.command_thread.daemon = True
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self.command_thread.start()
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self.log.debug("Starting worker")
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self.update_thread = threading.Thread(target=self._updateLoop)
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self.update_thread.daemon = True
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self.update_thread.start()
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self.merger_thread = threading.Thread(target=self.run_merger)
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self.merger_thread.daemon = True
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self.merger_thread.start()
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self.executor_thread = threading.Thread(target=self.run_executor)
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self.executor_thread.daemon = True
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self.executor_thread.start()
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def register(self):
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self.executor_worker.registerFunction("executor:execute")
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self.executor_worker.registerFunction("executor:stop:%s" %
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self.hostname)
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self.merger_worker.registerFunction("merger:merge")
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self.merger_worker.registerFunction("merger:cat")
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def stop(self):
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self.log.debug("Stopping")
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self._running = False
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self._command_running = False
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self.command_socket.stop()
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self.update_queue.put(None)
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for job_worker in list(self.job_workers.values()):
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try:
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job_worker.stop()
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except Exception:
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self.log.exception("Exception sending stop command "
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"to worker:")
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self.merger_worker.shutdown()
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self.executor_worker.shutdown()
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self.log.debug("Stopped")
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def pause(self):
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# TODOv3: implement
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pass
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|
def unpause(self):
|
|
# TODOv3: implement
|
|
pass
|
|
|
|
def graceful(self):
|
|
# TODOv3: implement
|
|
pass
|
|
|
|
def verboseOn(self):
|
|
self.verbose = True
|
|
|
|
def verboseOff(self):
|
|
self.verbose = False
|
|
|
|
def keep(self):
|
|
self.keep_jobdirs = True
|
|
|
|
def nokeep(self):
|
|
self.keep_jobdirs = False
|
|
|
|
def join(self):
|
|
self.update_thread.join()
|
|
self.merger_thread.join()
|
|
self.executor_thread.join()
|
|
|
|
def runCommand(self):
|
|
while self._command_running:
|
|
try:
|
|
command = self.command_socket.get().decode('utf8')
|
|
if command != '_stop':
|
|
self.command_map[command]()
|
|
except Exception:
|
|
self.log.exception("Exception while processing command")
|
|
|
|
def _updateLoop(self):
|
|
while self._running:
|
|
try:
|
|
self._innerUpdateLoop()
|
|
except:
|
|
self.log.exception("Exception in update thread:")
|
|
|
|
def _innerUpdateLoop(self):
|
|
# Inside of a loop that keeps the main repositories up to date
|
|
task = self.update_queue.get()
|
|
if task is None:
|
|
# We are asked to stop
|
|
return
|
|
with self.merger_lock:
|
|
self.log.info("Updating repo %s/%s" % (
|
|
task.connection_name, task.project_name))
|
|
self.merger.updateRepo(task.connection_name, task.project_name)
|
|
self.log.debug("Finished updating repo %s/%s" %
|
|
(task.connection_name, task.project_name))
|
|
task.setComplete()
|
|
|
|
def update(self, connection_name, project_name):
|
|
# Update a repository in the main merger
|
|
task = UpdateTask(connection_name, project_name)
|
|
task = self.update_queue.put(task)
|
|
return task
|
|
|
|
def run_merger(self):
|
|
self.log.debug("Starting merger listener")
|
|
while self._running:
|
|
try:
|
|
job = self.merger_worker.getJob()
|
|
try:
|
|
if job.name == 'merger:cat':
|
|
self.log.debug("Got cat job: %s" % job.unique)
|
|
self.cat(job)
|
|
elif job.name == 'merger:merge':
|
|
self.log.debug("Got merge job: %s" % job.unique)
|
|
self.merge(job)
|
|
else:
|
|
self.log.error("Unable to handle job %s" % job.name)
|
|
job.sendWorkFail()
|
|
except Exception:
|
|
self.log.exception("Exception while running job")
|
|
job.sendWorkException(
|
|
traceback.format_exc().encode('utf8'))
|
|
except gear.InterruptedError:
|
|
pass
|
|
except Exception:
|
|
self.log.exception("Exception while getting job")
|
|
|
|
def run_executor(self):
|
|
self.log.debug("Starting executor listener")
|
|
while self._running:
|
|
try:
|
|
job = self.executor_worker.getJob()
|
|
try:
|
|
if job.name == 'executor:execute':
|
|
self.log.debug("Got execute job: %s" % job.unique)
|
|
self.executeJob(job)
|
|
elif job.name.startswith('executor:stop'):
|
|
self.log.debug("Got stop job: %s" % job.unique)
|
|
self.stopJob(job)
|
|
else:
|
|
self.log.error("Unable to handle job %s" % job.name)
|
|
job.sendWorkFail()
|
|
except Exception:
|
|
self.log.exception("Exception while running job")
|
|
job.sendWorkException(
|
|
traceback.format_exc().encode('utf8'))
|
|
except gear.InterruptedError:
|
|
pass
|
|
except Exception:
|
|
self.log.exception("Exception while getting job")
|
|
|
|
def executeJob(self, job):
|
|
self.job_workers[job.unique] = AnsibleJob(self, job)
|
|
self.job_workers[job.unique].run()
|
|
|
|
def finishJob(self, unique):
|
|
del(self.job_workers[unique])
|
|
|
|
def stopJob(self, job):
|
|
try:
|
|
args = json.loads(job.arguments)
|
|
self.log.debug("Stop job with arguments: %s" % (args,))
|
|
unique = args['uuid']
|
|
job_worker = self.job_workers.get(unique)
|
|
if not job_worker:
|
|
self.log.debug("Unable to find worker for job %s" % (unique,))
|
|
return
|
|
try:
|
|
job_worker.stop()
|
|
except Exception:
|
|
self.log.exception("Exception sending stop command "
|
|
"to worker:")
|
|
finally:
|
|
job.sendWorkComplete()
|
|
|
|
def cat(self, job):
|
|
args = json.loads(job.arguments)
|
|
task = self.update(args['connection'], args['project'])
|
|
task.wait()
|
|
with self.merger_lock:
|
|
files = self.merger.getFiles(args['connection'], args['project'],
|
|
args['branch'], args['files'])
|
|
result = dict(updated=True,
|
|
files=files,
|
|
zuul_url=self.zuul_url)
|
|
job.sendWorkComplete(json.dumps(result))
|
|
|
|
def merge(self, job):
|
|
args = json.loads(job.arguments)
|
|
with self.merger_lock:
|
|
ret = self.merger.mergeChanges(args['items'], args.get('files'),
|
|
args.get('repo_state'))
|
|
result = dict(merged=(ret is not None),
|
|
zuul_url=self.zuul_url)
|
|
if ret is None:
|
|
result['commit'] = result['files'] = result['repo_state'] = None
|
|
else:
|
|
(result['commit'], result['files'], result['repo_state'],
|
|
recent) = ret
|
|
job.sendWorkComplete(json.dumps(result))
|
|
|
|
|
|
class AnsibleJobLogAdapter(logging.LoggerAdapter):
|
|
def process(self, msg, kwargs):
|
|
msg, kwargs = super(AnsibleJobLogAdapter, self).process(msg, kwargs)
|
|
msg = '[build: %s] %s' % (kwargs['extra']['job'], msg)
|
|
return msg, kwargs
|
|
|
|
|
|
class AnsibleJob(object):
|
|
RESULT_NORMAL = 1
|
|
RESULT_TIMED_OUT = 2
|
|
RESULT_UNREACHABLE = 3
|
|
RESULT_ABORTED = 4
|
|
|
|
RESULT_MAP = {
|
|
RESULT_NORMAL: 'RESULT_NORMAL',
|
|
RESULT_TIMED_OUT: 'RESULT_TIMED_OUT',
|
|
RESULT_UNREACHABLE: 'RESULT_UNREACHABLE',
|
|
RESULT_ABORTED: 'RESULT_ABORTED',
|
|
}
|
|
|
|
def __init__(self, executor_server, job):
|
|
logger = logging.getLogger("zuul.AnsibleJob")
|
|
self.log = AnsibleJobLogAdapter(logger, {'job': job.unique})
|
|
self.executor_server = executor_server
|
|
self.job = job
|
|
self.jobdir = None
|
|
self.proc = None
|
|
self.proc_lock = threading.Lock()
|
|
self.running = False
|
|
self.aborted = False
|
|
self.thread = None
|
|
self.ssh_agent = None
|
|
|
|
self.private_key_file = get_default(self.executor_server.config,
|
|
'executor', 'private_key_file',
|
|
'~/.ssh/id_rsa')
|
|
self.ssh_agent = SshAgent()
|
|
|
|
def run(self):
|
|
self.ssh_agent.start()
|
|
self.ssh_agent.add(self.private_key_file)
|
|
self.running = True
|
|
self.thread = threading.Thread(target=self.execute)
|
|
self.thread.start()
|
|
|
|
def stop(self):
|
|
self.aborted = True
|
|
self.abortRunningProc()
|
|
if self.thread:
|
|
self.thread.join()
|
|
|
|
def execute(self):
|
|
try:
|
|
self.jobdir = JobDir(self.executor_server.jobdir_root,
|
|
self.executor_server.keep_jobdir,
|
|
str(self.job.unique))
|
|
self._execute()
|
|
except Exception:
|
|
self.log.exception("Exception while executing job")
|
|
self.job.sendWorkException(traceback.format_exc())
|
|
finally:
|
|
self.running = False
|
|
try:
|
|
self.jobdir.cleanup()
|
|
except Exception:
|
|
self.log.exception("Error cleaning up jobdir:")
|
|
try:
|
|
self.executor_server.finishJob(self.job.unique)
|
|
except Exception:
|
|
self.log.exception("Error finalizing job thread:")
|
|
if self.ssh_agent:
|
|
try:
|
|
self.ssh_agent.stop()
|
|
except Exception:
|
|
self.log.exception("Error stopping SSH agent:")
|
|
|
|
def _execute(self):
|
|
self.log.debug("Job %s: beginning" % (self.job.unique,))
|
|
self.log.debug("Job %s: args: %s" % (self.job.unique,
|
|
self.job.arguments,))
|
|
self.log.debug("Job %s: job root at %s" %
|
|
(self.job.unique, self.jobdir.root))
|
|
args = json.loads(self.job.arguments)
|
|
tasks = []
|
|
projects = set()
|
|
|
|
# Make sure all projects used by the job are updated...
|
|
for project in args['projects']:
|
|
self.log.debug("Job %s: updating project %s" %
|
|
(self.job.unique, project))
|
|
tasks.append(self.executor_server.update(
|
|
project['connection'], project['name']))
|
|
projects.add((project['connection'], project['name']))
|
|
|
|
# ...as well as all playbook and role projects.
|
|
repos = (args['pre_playbooks'] + args['playbooks'] +
|
|
args['post_playbooks'] + args['roles'])
|
|
for repo in repos:
|
|
self.log.debug("Job %s: updating playbook or role %s" %
|
|
(self.job.unique, repo))
|
|
key = (repo['connection'], repo['project'])
|
|
if key not in projects:
|
|
tasks.append(self.executor_server.update(*key))
|
|
projects.add(key)
|
|
|
|
for task in tasks:
|
|
task.wait()
|
|
|
|
self.log.debug("Job %s: git updates complete" % (self.job.unique,))
|
|
merger = self.executor_server._getMerger(self.jobdir.src_root,
|
|
self.log)
|
|
repos = {}
|
|
for project in args['projects']:
|
|
self.log.debug("Cloning %s/%s" % (project['connection'],
|
|
project['name'],))
|
|
repo = merger.getRepo(project['connection'],
|
|
project['name'])
|
|
repos[project['canonical_name']] = repo
|
|
|
|
merge_items = [i for i in args['items'] if i.get('refspec')]
|
|
if merge_items:
|
|
if not self.doMergeChanges(merger, merge_items,
|
|
args['repo_state']):
|
|
# There was a merge conflict and we have already sent
|
|
# a work complete result, don't run any jobs
|
|
return
|
|
|
|
for project in args['projects']:
|
|
repo = repos[project['canonical_name']]
|
|
self.checkoutBranch(repo,
|
|
project['name'],
|
|
args['branch'],
|
|
args['override_branch'],
|
|
project['override_branch'],
|
|
project['default_branch'])
|
|
|
|
# Delete the origin remote from each repo we set up since
|
|
# it will not be valid within the jobs.
|
|
for repo in repos.values():
|
|
repo.deleteRemote('origin')
|
|
|
|
# is the playbook in a repo that we have already prepared?
|
|
trusted, untrusted = self.preparePlaybookRepos(args)
|
|
|
|
self.prepareRoles(args, trusted, untrusted)
|
|
|
|
# TODOv3: Ansible the ansible thing here.
|
|
self.prepareAnsibleFiles(args)
|
|
|
|
data = {
|
|
'url': 'finger://{server}/{unique}'.format(
|
|
unique=self.job.unique,
|
|
server=self.executor_server.hostname),
|
|
# TODO(mordred) worker_name is needed as a unique name for the
|
|
# client to use for cancelling jobs on an executor. It's defaulting
|
|
# to the hostname for now, but in the future we should allow
|
|
# setting a per-executor override so that one can run more than
|
|
# one executor on a host.
|
|
'worker_name': self.executor_server.hostname,
|
|
'worker_hostname': self.executor_server.hostname,
|
|
}
|
|
|
|
self.job.sendWorkData(json.dumps(data))
|
|
self.job.sendWorkStatus(0, 100)
|
|
|
|
result = self.runPlaybooks(args)
|
|
|
|
if result is None:
|
|
self.job.sendWorkFail()
|
|
return
|
|
result = dict(result=result)
|
|
self.job.sendWorkComplete(json.dumps(result))
|
|
|
|
def doMergeChanges(self, merger, items, repo_state):
|
|
ret = merger.mergeChanges(items, repo_state=repo_state)
|
|
if not ret: # merge conflict
|
|
result = dict(result='MERGER_FAILURE')
|
|
self.job.sendWorkComplete(json.dumps(result))
|
|
return False
|
|
recent = ret[3]
|
|
for key, commit in recent.items():
|
|
(connection, project, branch) = key
|
|
repo = merger.getRepo(connection, project)
|
|
repo.setRef('refs/heads/' + branch, commit)
|
|
return True
|
|
|
|
def checkoutBranch(self, repo, project_name, zuul_branch,
|
|
job_branch, project_override_branch,
|
|
project_default_branch):
|
|
branches = repo.getBranches()
|
|
if project_override_branch in branches:
|
|
self.log.info("Checking out %s project override branch %s",
|
|
project_name, project_override_branch)
|
|
repo.checkoutLocalBranch(project_override_branch)
|
|
elif job_branch in branches:
|
|
self.log.info("Checking out %s job branch %s",
|
|
project_name, job_branch)
|
|
repo.checkoutLocalBranch(job_branch)
|
|
elif zuul_branch and zuul_branch in branches:
|
|
self.log.info("Checking out %s zuul branch %s",
|
|
project_name, zuul_branch)
|
|
repo.checkoutLocalBranch(zuul_branch)
|
|
elif project_default_branch in branches:
|
|
self.log.info("Checking out %s project default branch %s",
|
|
project_name, project_default_branch)
|
|
repo.checkoutLocalBranch(project_default_branch)
|
|
else:
|
|
raise Exception("Project %s does not have the default branch %s" %
|
|
(project_name, project_default_branch))
|
|
|
|
def runPlaybooks(self, args):
|
|
result = None
|
|
|
|
for playbook in self.jobdir.pre_playbooks:
|
|
# TODOv3(pabelanger): Implement pre-run timeout setting.
|
|
pre_status, pre_code = self.runAnsiblePlaybook(
|
|
playbook, args['timeout'])
|
|
if pre_status != self.RESULT_NORMAL or pre_code != 0:
|
|
# These should really never fail, so return None and have
|
|
# zuul try again
|
|
return result
|
|
|
|
job_status, job_code = self.runAnsiblePlaybook(
|
|
self.jobdir.playbook, args['timeout'])
|
|
if job_status == self.RESULT_TIMED_OUT:
|
|
return 'TIMED_OUT'
|
|
if job_status == self.RESULT_ABORTED:
|
|
return 'ABORTED'
|
|
if job_status != self.RESULT_NORMAL:
|
|
# The result of the job is indeterminate. Zuul will
|
|
# run it again.
|
|
return result
|
|
|
|
success = (job_code == 0)
|
|
if success:
|
|
result = 'SUCCESS'
|
|
else:
|
|
result = 'FAILURE'
|
|
|
|
for playbook in self.jobdir.post_playbooks:
|
|
# TODOv3(pabelanger): Implement post-run timeout setting.
|
|
post_status, post_code = self.runAnsiblePlaybook(
|
|
playbook, args['timeout'], success)
|
|
if post_status != self.RESULT_NORMAL or post_code != 0:
|
|
result = 'POST_FAILURE'
|
|
return result
|
|
|
|
def getHostList(self, args):
|
|
hosts = []
|
|
for node in args['nodes']:
|
|
# NOTE(mordred): This assumes that the nodepool launcher
|
|
# and the zuul executor both have similar network
|
|
# characteristics, as the launcher will do a test for ipv6
|
|
# viability and if so, and if the node has an ipv6
|
|
# address, it will be the interface_ip. force-ipv4 can be
|
|
# set to True in the clouds.yaml for a cloud if this
|
|
# results in the wrong thing being in interface_ip
|
|
# TODO(jeblair): Move this notice to the docs.
|
|
ip = node.get('interface_ip')
|
|
host_vars = dict(
|
|
ansible_host=ip,
|
|
ansible_user=self.executor_server.default_username,
|
|
nodepool=dict(
|
|
az=node.get('az'),
|
|
provider=node.get('provider'),
|
|
region=node.get('region')))
|
|
|
|
host_keys = []
|
|
for key in node.get('host_keys'):
|
|
host_keys.append("%s %s" % (ip, key))
|
|
|
|
hosts.append(dict(
|
|
name=node['name'],
|
|
host_vars=host_vars,
|
|
host_keys=host_keys))
|
|
return hosts
|
|
|
|
def _blockPluginDirs(self, path):
|
|
'''Prevent execution of playbooks or roles with plugins
|
|
|
|
Plugins are loaded from roles and also if there is a plugin
|
|
dir adjacent to the playbook. Throw an error if the path
|
|
contains a location that would cause a plugin to get loaded.
|
|
|
|
'''
|
|
for entry in os.listdir(path):
|
|
if os.path.isdir(entry) and entry.endswith('_plugins'):
|
|
raise Exception(
|
|
"Ansible plugin dir %s found adjacent to playbook %s in"
|
|
" non-trusted repo." % (entry, path))
|
|
|
|
def findPlaybook(self, path, required=False, trusted=False):
|
|
for ext in ['.yaml', '.yml']:
|
|
fn = path + ext
|
|
if os.path.exists(fn):
|
|
if not trusted:
|
|
playbook_dir = os.path.dirname(os.path.abspath(fn))
|
|
self._blockPluginDirs(playbook_dir)
|
|
return fn
|
|
if required:
|
|
raise Exception("Unable to find playbook %s" % path)
|
|
return None
|
|
|
|
def preparePlaybookRepos(self, args):
|
|
trusted = untrusted = False
|
|
for playbook in args['pre_playbooks']:
|
|
jobdir_playbook = self.jobdir.addPrePlaybook()
|
|
self.preparePlaybookRepo(jobdir_playbook, playbook,
|
|
args, required=True)
|
|
if playbook['trusted']:
|
|
trusted = True
|
|
else:
|
|
untrusted = True
|
|
|
|
for playbook in args['playbooks']:
|
|
jobdir_playbook = self.jobdir.addPlaybook()
|
|
self.preparePlaybookRepo(jobdir_playbook, playbook,
|
|
args, required=False)
|
|
if playbook['trusted']:
|
|
trusted = True
|
|
else:
|
|
untrusted = True
|
|
if jobdir_playbook.path is not None:
|
|
self.jobdir.playbook = jobdir_playbook
|
|
break
|
|
if self.jobdir.playbook is None:
|
|
raise Exception("No valid playbook found")
|
|
|
|
for playbook in args['post_playbooks']:
|
|
jobdir_playbook = self.jobdir.addPostPlaybook()
|
|
self.preparePlaybookRepo(jobdir_playbook, playbook,
|
|
args, required=True)
|
|
if playbook['trusted']:
|
|
trusted = True
|
|
else:
|
|
untrusted = True
|
|
return (trusted, untrusted)
|
|
|
|
def preparePlaybookRepo(self, jobdir_playbook, playbook, args, required):
|
|
self.log.debug("Prepare playbook repo for %s" % (playbook,))
|
|
# Check out the playbook repo if needed and set the path to
|
|
# the playbook that should be run.
|
|
jobdir_playbook.trusted = playbook['trusted']
|
|
source = self.executor_server.connections.getSource(
|
|
playbook['connection'])
|
|
project = source.getProject(playbook['project'])
|
|
if not playbook['trusted']:
|
|
# This is a project repo, so it is safe to use the already
|
|
# checked out version (from speculative merging) of the
|
|
# playbook
|
|
for i in args['items']:
|
|
if (i['connection'] == playbook['connection'] and
|
|
i['project'] == playbook['project']):
|
|
# We already have this repo prepared
|
|
path = os.path.join(self.jobdir.src_root,
|
|
project.canonical_hostname,
|
|
project.name,
|
|
playbook['path'])
|
|
jobdir_playbook.path = self.findPlaybook(
|
|
path,
|
|
required=required,
|
|
trusted=playbook['trusted'])
|
|
return
|
|
# The playbook repo is either a config repo, or it isn't in
|
|
# the stack of changes we are testing, so check out the branch
|
|
# tip into a dedicated space.
|
|
|
|
merger = self.executor_server._getMerger(jobdir_playbook.root,
|
|
self.log)
|
|
merger.checkoutBranch(playbook['connection'], project.name,
|
|
playbook['branch'])
|
|
|
|
path = os.path.join(jobdir_playbook.root,
|
|
project.canonical_hostname,
|
|
project.name,
|
|
playbook['path'])
|
|
jobdir_playbook.path = self.findPlaybook(
|
|
path,
|
|
required=required,
|
|
trusted=playbook['trusted'])
|
|
|
|
def prepareRoles(self, args, trusted, untrusted):
|
|
for role in args['roles']:
|
|
if role['type'] == 'zuul':
|
|
root = self.jobdir.addRole()
|
|
self.prepareZuulRole(args, role, root, trusted, untrusted)
|
|
|
|
def findRole(self, path, trusted=False):
|
|
d = os.path.join(path, 'tasks')
|
|
if os.path.isdir(d):
|
|
# This is a bare role
|
|
if not trusted:
|
|
self._blockPluginDirs(path)
|
|
# None signifies that the repo is a bare role
|
|
return None
|
|
d = os.path.join(path, 'roles')
|
|
if os.path.isdir(d):
|
|
# This repo has a collection of roles
|
|
if not trusted:
|
|
for entry in os.listdir(d):
|
|
self._blockPluginDirs(os.path.join(d, entry))
|
|
return d
|
|
# We assume the repository itself is a collection of roles
|
|
if not trusted:
|
|
for entry in os.listdir(path):
|
|
self._blockPluginDirs(os.path.join(path, entry))
|
|
return path
|
|
|
|
def prepareZuulRole(self, args, role, root, trusted, untrusted):
|
|
self.log.debug("Prepare zuul role for %s" % (role,))
|
|
# Check out the role repo if needed
|
|
source = self.executor_server.connections.getSource(
|
|
role['connection'])
|
|
project = source.getProject(role['project'])
|
|
untrusted_role_repo = None
|
|
trusted_role_repo = None
|
|
trusted_root = os.path.join(root, 'trusted')
|
|
untrusted_root = os.path.join(root, 'untrusted')
|
|
name = role['target_name']
|
|
|
|
if untrusted:
|
|
# There is at least one untrusted playbook. For that
|
|
# case, use the already checked out version (from
|
|
# speculative merging) of the role.
|
|
|
|
for i in args['items']:
|
|
if (i['connection'] == role['connection'] and
|
|
i['project'] == role['project']):
|
|
# We already have this repo prepared;
|
|
# copy it into location.
|
|
|
|
path = os.path.join(self.jobdir.src_root,
|
|
project.canonical_hostname,
|
|
project.name)
|
|
# The name of the symlink is the requested name of
|
|
# the role (which may be the repo name or may be
|
|
# something else; this can come into play if this
|
|
# is a bare role).
|
|
link = os.path.join(untrusted_root, name)
|
|
link = os.path.realpath(link)
|
|
if not link.startswith(os.path.realpath(untrusted_root)):
|
|
raise Exception("Invalid role name %s", name)
|
|
os.symlink(path, link)
|
|
untrusted_role_repo = link
|
|
break
|
|
|
|
if trusted or not untrusted_role_repo:
|
|
# There is at least one trusted playbook which will need a
|
|
# trusted checkout of the role, or the role did not appear
|
|
# in the dependency chain for the change (in which case,
|
|
# there is no existing untrusted checkout of it). Check
|
|
# out the branch tip into a dedicated space.
|
|
merger = self.executor_server._getMerger(trusted_root,
|
|
self.log)
|
|
merger.checkoutBranch(role['connection'], project.name,
|
|
'master')
|
|
orig_repo_path = os.path.join(trusted_root,
|
|
project.canonical_hostname,
|
|
project.name)
|
|
if name != project.name:
|
|
# The requested name of the role is not the same as
|
|
# the project name, so rename the git repo as the
|
|
# requested name. It is the only item in this
|
|
# directory, so we don't need to worry about
|
|
# collisions.
|
|
target = os.path.join(trusted_root,
|
|
project.canonical_hostname,
|
|
name)
|
|
target = os.path.realpath(target)
|
|
if not target.startswith(os.path.realpath(trusted_root)):
|
|
raise Exception("Invalid role name %s", name)
|
|
os.rename(orig_repo_path, target)
|
|
trusted_role_repo = target
|
|
else:
|
|
trusted_role_repo = orig_repo_path
|
|
|
|
if not untrusted_role_repo:
|
|
# In the case that there was no untrusted checkout,
|
|
# use the trusted checkout.
|
|
untrusted_role_repo = trusted_role_repo
|
|
untrusted_root = trusted_root
|
|
|
|
if untrusted:
|
|
untrusted_role_path = self.findRole(untrusted_role_repo,
|
|
trusted=False)
|
|
if untrusted_role_path is None:
|
|
# In the case of a bare role, add the containing directory
|
|
untrusted_role_path = os.path.join(untrusted_root,
|
|
project.canonical_hostname)
|
|
self.jobdir.untrusted_roles_path.append(untrusted_role_path)
|
|
|
|
if trusted:
|
|
trusted_role_path = self.findRole(trusted_role_repo,
|
|
trusted=True)
|
|
if trusted_role_path is None:
|
|
# In the case of a bare role, add the containing directory
|
|
trusted_role_path = os.path.join(trusted_root,
|
|
project.canonical_hostname)
|
|
self.jobdir.trusted_roles_path.append(trusted_role_path)
|
|
|
|
def prepareAnsibleFiles(self, args):
|
|
all_vars = dict(args['vars'])
|
|
# TODO(mordred) Hack to work around running things with python3
|
|
all_vars['ansible_python_interpreter'] = '/usr/bin/python2'
|
|
all_vars['zuul']['executor'] = dict(
|
|
hostname=self.executor_server.hostname,
|
|
src_root=self.jobdir.src_root,
|
|
log_root=self.jobdir.log_root)
|
|
|
|
nodes = self.getHostList(args)
|
|
inventory = make_inventory_dict(nodes, args['groups'], all_vars)
|
|
|
|
with open(self.jobdir.inventory, 'w') as inventory_yaml:
|
|
inventory_yaml.write(
|
|
yaml.safe_dump(inventory, default_flow_style=False))
|
|
|
|
with open(self.jobdir.known_hosts, 'w') as known_hosts:
|
|
for node in nodes:
|
|
for key in node['host_keys']:
|
|
known_hosts.write('%s\n' % key)
|
|
|
|
self.writeAnsibleConfig(self.jobdir.untrusted_config)
|
|
self.writeAnsibleConfig(self.jobdir.trusted_config, trusted=True)
|
|
|
|
def writeAnsibleConfig(self, config_path, trusted=False):
|
|
with open(config_path, 'w') as config:
|
|
config.write('[defaults]\n')
|
|
config.write('hostfile = %s\n' % self.jobdir.inventory)
|
|
config.write('local_tmp = %s/.ansible/local_tmp\n' %
|
|
self.jobdir.root)
|
|
config.write('remote_tmp = %s/.ansible/remote_tmp\n' %
|
|
self.jobdir.root)
|
|
config.write('retry_files_enabled = False\n')
|
|
config.write('gathering = explicit\n')
|
|
config.write('library = %s\n'
|
|
% self.executor_server.library_dir)
|
|
config.write('command_warnings = False\n')
|
|
config.write('callback_plugins = %s\n'
|
|
% self.executor_server.callback_dir)
|
|
config.write('stdout_callback = zuul_stream\n')
|
|
# bump the timeout because busy nodes may take more than
|
|
# 10s to respond
|
|
config.write('timeout = 30\n')
|
|
if not trusted:
|
|
config.write('action_plugins = %s\n'
|
|
% self.executor_server.action_dir)
|
|
config.write('lookup_plugins = %s\n'
|
|
% self.executor_server.lookup_dir)
|
|
roles_path = self.jobdir.untrusted_roles_path
|
|
else:
|
|
roles_path = self.jobdir.trusted_roles_path
|
|
|
|
if roles_path:
|
|
config.write('roles_path = %s\n' % ':'.join(roles_path))
|
|
|
|
# On trusted jobs, we want to prevent the printing of args,
|
|
# since trusted jobs might have access to secrets that they may
|
|
# need to pass to a task or a role. On the other hand, there
|
|
# should be no sensitive data in untrusted jobs, and printing
|
|
# the args could be useful for debugging.
|
|
config.write('display_args_to_stdout = %s\n' %
|
|
str(not trusted))
|
|
|
|
config.write('[ssh_connection]\n')
|
|
# NB: when setting pipelining = True, keep_remote_files
|
|
# must be False (the default). Otherwise it apparently
|
|
# will override the pipelining option and effectively
|
|
# disable it. Pipelining has a side effect of running the
|
|
# command without a tty (ie, without the -tt argument to
|
|
# ssh). We require this behavior so that if a job runs a
|
|
# command which expects interactive input on a tty (such
|
|
# as sudo) it does not hang.
|
|
config.write('pipelining = True\n')
|
|
ssh_args = "-o ControlMaster=auto -o ControlPersist=60s " \
|
|
"-o UserKnownHostsFile=%s" % self.jobdir.known_hosts
|
|
config.write('ssh_args = %s\n' % ssh_args)
|
|
|
|
def _ansibleTimeout(self, msg):
|
|
self.log.warning(msg)
|
|
self.abortRunningProc()
|
|
|
|
def abortRunningProc(self):
|
|
with self.proc_lock:
|
|
if not self.proc:
|
|
self.log.debug("Abort: no process is running")
|
|
return
|
|
self.log.debug("Abort: sending kill signal to job "
|
|
"process group")
|
|
try:
|
|
pgid = os.getpgid(self.proc.pid)
|
|
os.killpg(pgid, signal.SIGKILL)
|
|
except Exception:
|
|
self.log.exception("Exception while killing ansible process:")
|
|
|
|
def runAnsible(self, cmd, timeout, trusted=False):
|
|
env_copy = os.environ.copy()
|
|
env_copy.update(self.ssh_agent.env)
|
|
env_copy['LOGNAME'] = 'zuul'
|
|
env_copy['ZUUL_JOB_OUTPUT_FILE'] = self.jobdir.job_output_file
|
|
pythonpath = env_copy.get('PYTHONPATH')
|
|
if pythonpath:
|
|
pythonpath = [pythonpath]
|
|
else:
|
|
pythonpath = []
|
|
pythonpath = [self.executor_server.ansible_dir] + pythonpath
|
|
env_copy['PYTHONPATH'] = os.path.pathsep.join(pythonpath)
|
|
|
|
if trusted:
|
|
config_file = self.jobdir.trusted_config
|
|
opt_prefix = 'trusted'
|
|
else:
|
|
config_file = self.jobdir.untrusted_config
|
|
opt_prefix = 'untrusted'
|
|
ro_dirs = get_default(self.executor_server.config, 'executor',
|
|
'%s_ro_dirs' % opt_prefix)
|
|
rw_dirs = get_default(self.executor_server.config, 'executor',
|
|
'%s_rw_dirs' % opt_prefix)
|
|
state_dir = get_default(self.executor_server.config, 'zuul',
|
|
'state_dir', '/var/lib/zuul', expand_user=True)
|
|
ro_dirs = ro_dirs.split(":") if ro_dirs else []
|
|
rw_dirs = rw_dirs.split(":") if rw_dirs else []
|
|
self.executor_server.execution_wrapper.setMountsMap(state_dir, ro_dirs,
|
|
rw_dirs)
|
|
|
|
popen = self.executor_server.execution_wrapper.getPopen(
|
|
work_dir=self.jobdir.root,
|
|
ssh_auth_sock=env_copy.get('SSH_AUTH_SOCK'))
|
|
|
|
env_copy['ANSIBLE_CONFIG'] = config_file
|
|
# NOTE(pabelanger): Default HOME variable to jobdir.work_root, as it is
|
|
# possible we don't bind mount current zuul user home directory.
|
|
env_copy['HOME'] = self.jobdir.work_root
|
|
|
|
with self.proc_lock:
|
|
if self.aborted:
|
|
return (self.RESULT_ABORTED, None)
|
|
self.log.debug("Ansible command: ANSIBLE_CONFIG=%s %s",
|
|
config_file, " ".join(shlex.quote(c) for c in cmd))
|
|
self.proc = popen(
|
|
cmd,
|
|
cwd=self.jobdir.work_root,
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.STDOUT,
|
|
preexec_fn=os.setsid,
|
|
env=env_copy,
|
|
)
|
|
|
|
ret = None
|
|
if timeout:
|
|
watchdog = Watchdog(timeout, self._ansibleTimeout,
|
|
("Ansible timeout exceeded",))
|
|
watchdog.start()
|
|
try:
|
|
for line in iter(self.proc.stdout.readline, b''):
|
|
line = line[:1024].rstrip()
|
|
self.log.debug("Ansible output: %s" % (line,))
|
|
self.log.debug("Ansible output terminated")
|
|
ret = self.proc.wait()
|
|
self.log.debug("Ansible exit code: %s" % (ret,))
|
|
finally:
|
|
if timeout:
|
|
watchdog.stop()
|
|
self.log.debug("Stopped watchdog")
|
|
|
|
with self.proc_lock:
|
|
self.proc = None
|
|
|
|
if timeout and watchdog.timed_out:
|
|
return (self.RESULT_TIMED_OUT, None)
|
|
if ret == 3:
|
|
# AnsibleHostUnreachable: We had a network issue connecting to
|
|
# our zuul-worker.
|
|
return (self.RESULT_UNREACHABLE, None)
|
|
elif ret == -9:
|
|
# Received abort request.
|
|
return (self.RESULT_ABORTED, None)
|
|
|
|
return (self.RESULT_NORMAL, ret)
|
|
|
|
def runAnsiblePlaybook(self, playbook, timeout, success=None):
|
|
env_copy = os.environ.copy()
|
|
env_copy['LOGNAME'] = 'zuul'
|
|
|
|
if self.executor_server.verbose:
|
|
verbose = '-vvv'
|
|
else:
|
|
verbose = '-v'
|
|
|
|
cmd = ['ansible-playbook', verbose, playbook.path]
|
|
|
|
if success is not None:
|
|
cmd.extend(['-e', 'success=%s' % str(bool(success))])
|
|
|
|
result, code = self.runAnsible(
|
|
cmd=cmd, timeout=timeout, trusted=playbook.trusted)
|
|
self.log.debug("Ansible complete, result %s code %s" % (
|
|
self.RESULT_MAP[result], code))
|
|
return result, code
|