############################
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# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
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# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
#
import logging
import os
import pexpect
import re
import shlex
import stat
import tempfile
import six
from uuid import uuid4
try:
from collections.abc import Mapping
except ImportError:
from collections import Mapping
from distutils.dir_util import copy_tree
from six import iteritems, string_types, ensure_binary
from ansible_runner import output
from ansible_runner.exceptions import ConfigurationError
from ansible_runner.loader import ArtifactLoader
from ansible_runner.utils import (
open_fifo_write,
args2cmdline,
)
logger = logging.getLogger('ansible-runner')
[docs]class ExecutionMode():
NONE = 0
ANSIBLE = 1
ANSIBLE_PLAYBOOK = 2
RAW = 3
[docs]class RunnerConfig(object):
"""
A ``Runner`` configuration object that's meant to encapsulate the configuration used by the
:py:mod:`ansible_runner.runner.Runner` object to launch and manage the invocation of ``ansible``
and ``ansible-playbook``
Typically this object is initialized for you when using the standard ``run`` interfaces in :py:mod:`ansible_runner.interface`
but can be used to construct the ``Runner`` configuration to be invoked elsewhere. It can also be overridden to provide different
functionality to the Runner object.
:Example:
>>> rc = RunnerConfig(...)
>>> r = Runner(config=rc)
>>> r.run()
"""
def __init__(self,
private_data_dir=None, playbook=None, ident=uuid4(),
inventory=None, roles_path=None, limit=None, module=None, module_args=None,
verbosity=None, quiet=False, json_mode=False, artifact_dir=None,
rotate_artifacts=0, host_pattern=None, binary=None, extravars=None, suppress_ansible_output=False,
process_isolation=False, process_isolation_executable=None, process_isolation_path=None,
process_isolation_hide_paths=None, process_isolation_show_paths=None, process_isolation_ro_paths=None,
resource_profiling=False, resource_profiling_base_cgroup='ansible-runner', resource_profiling_cpu_poll_interval=0.25,
resource_profiling_memory_poll_interval=0.25, resource_profiling_pid_poll_interval=0.25,
resource_profiling_results_dir=None,
tags=None, skip_tags=None, fact_cache_type='jsonfile', fact_cache=None, ssh_key=None,
project_dir=None, directory_isolation_base_path=None, envvars=None, forks=None, cmdline=None, omit_event_data=False,
only_failed_event_data=False):
self.private_data_dir = os.path.abspath(private_data_dir)
self.ident = str(ident)
self.json_mode = json_mode
self.playbook = playbook
self.inventory = inventory
self.roles_path = roles_path
self.limit = limit
self.module = module
self.module_args = module_args
self.host_pattern = host_pattern
self.binary = binary
self.rotate_artifacts = rotate_artifacts
self.artifact_dir = os.path.abspath(artifact_dir or self.private_data_dir)
if artifact_dir is None:
self.artifact_dir = os.path.join(self.private_data_dir, 'artifacts')
else:
self.artifact_dir = os.path.abspath(artifact_dir)
if self.ident is not None:
self.artifact_dir = os.path.join(self.artifact_dir, "{}".format(self.ident))
self.extra_vars = extravars
self.process_isolation = process_isolation
self.process_isolation_executable = process_isolation_executable
self.process_isolation_path = process_isolation_path
self.process_isolation_path_actual = None
self.process_isolation_hide_paths = process_isolation_hide_paths
self.process_isolation_show_paths = process_isolation_show_paths
self.process_isolation_ro_paths = process_isolation_ro_paths
self.resource_profiling = resource_profiling
self.resource_profiling_base_cgroup = resource_profiling_base_cgroup
self.resource_profiling_cpu_poll_interval = resource_profiling_cpu_poll_interval
self.resource_profiling_memory_poll_interval = resource_profiling_memory_poll_interval
self.resource_profiling_pid_poll_interval = resource_profiling_pid_poll_interval
self.resource_profiling_results_dir = resource_profiling_results_dir
self.directory_isolation_path = directory_isolation_base_path
if not project_dir:
self.project_dir = os.path.join(self.private_data_dir, 'project')
else:
self.project_dir = project_dir
self.verbosity = verbosity
self.quiet = quiet
self.suppress_ansible_output = suppress_ansible_output
self.loader = ArtifactLoader(self.private_data_dir)
self.tags = tags
self.skip_tags = skip_tags
self.fact_cache_type = fact_cache_type
self.fact_cache = os.path.join(self.artifact_dir, fact_cache or 'fact_cache') if self.fact_cache_type == 'jsonfile' else None
self.ssh_key_data = ssh_key
self.execution_mode = ExecutionMode.NONE
self.envvars = envvars
self.forks = forks
self.cmdline_args = cmdline
self.omit_event_data = omit_event_data
self.only_failed_event_data = only_failed_event_data
[docs] def prepare(self):
"""
Performs basic checks and then properly invokes
- prepare_inventory
- prepare_env
- prepare_command
It's also responsible for wrapping the command with the proper ssh agent invocation
and setting early ANSIBLE_ environment variables.
"""
# ansible_path = find_executable('ansible')
# if ansible_path is None or not os.access(ansible_path, os.X_OK):
# raise ConfigurationError("Ansible not found. Make sure that it is installed.")
if self.private_data_dir is None:
raise ConfigurationError("Runner Base Directory is not defined")
if self.module and self.playbook:
raise ConfigurationError("Only one of playbook and module options are allowed")
if not os.path.exists(self.artifact_dir):
os.makedirs(self.artifact_dir, mode=0o700)
if self.directory_isolation_path is not None:
self.directory_isolation_path = tempfile.mkdtemp(prefix='runner_di_', dir=self.directory_isolation_path)
if os.path.exists(self.project_dir):
output.debug("Copying directory tree from {} to {} for working directory isolation".format(self.project_dir,
self.directory_isolation_path))
copy_tree(self.project_dir, self.directory_isolation_path, preserve_symlinks=True)
self.prepare_inventory()
self.prepare_env()
self.prepare_command()
if self.execution_mode == ExecutionMode.ANSIBLE_PLAYBOOK and self.playbook is None:
raise ConfigurationError("Runner playbook required when running ansible-playbook")
elif self.execution_mode == ExecutionMode.ANSIBLE and self.module is None:
raise ConfigurationError("Runner module required when running ansible")
elif self.execution_mode == ExecutionMode.NONE:
raise ConfigurationError("No executable for runner to run")
# write the SSH key data into a fifo read by ssh-agent
if self.ssh_key_data:
self.ssh_key_path = os.path.join(self.artifact_dir, 'ssh_key_data')
open_fifo_write(self.ssh_key_path, self.ssh_key_data)
self.command = self.wrap_args_with_ssh_agent(self.command, self.ssh_key_path)
# Use local callback directory
callback_dir = self.env.get('AWX_LIB_DIRECTORY', os.getenv('AWX_LIB_DIRECTORY'))
if callback_dir is None:
callback_dir = os.path.join(os.path.split(os.path.abspath(__file__))[0],
"callbacks")
python_path = self.env.get('PYTHONPATH', os.getenv('PYTHONPATH', ''))
if python_path and not python_path.endswith(':'):
python_path += ':'
self.env['ANSIBLE_CALLBACK_PLUGINS'] = ':'.join(filter(None,(self.env.get('ANSIBLE_CALLBACK_PLUGINS'), callback_dir)))
if 'AD_HOC_COMMAND_ID' in self.env:
self.env['ANSIBLE_STDOUT_CALLBACK'] = 'minimal'
else:
self.env['ANSIBLE_STDOUT_CALLBACK'] = 'awx_display'
self.env['ANSIBLE_RETRY_FILES_ENABLED'] = 'False'
if 'ANSIBLE_HOST_KEY_CHECKING' not in self.env:
self.env['ANSIBLE_HOST_KEY_CHECKING'] = 'False'
self.env['AWX_ISOLATED_DATA_DIR'] = self.artifact_dir
if self.resource_profiling:
callback_whitelist = os.environ.get('ANSIBLE_CALLBACK_WHITELIST', '').strip()
self.env['ANSIBLE_CALLBACK_WHITELIST'] = ','.join(filter(None, [callback_whitelist, 'cgroup_perf_recap']))
self.env['CGROUP_CONTROL_GROUP'] = '{}/{}'.format(self.resource_profiling_base_cgroup, self.ident)
if self.resource_profiling_results_dir:
cgroup_output_dir = self.resource_profiling_results_dir
else:
cgroup_output_dir = os.path.normpath(os.path.join(self.private_data_dir, 'profiling_data'))
# Create results directory if it does not exist
if not os.path.isdir(cgroup_output_dir):
os.mkdir(cgroup_output_dir, stat.S_IREAD | stat.S_IWRITE | stat.S_IEXEC)
self.env['CGROUP_OUTPUT_DIR'] = cgroup_output_dir
self.env['CGROUP_OUTPUT_FORMAT'] = 'json'
self.env['CGROUP_CPU_POLL_INTERVAL'] = str(self.resource_profiling_cpu_poll_interval)
self.env['CGROUP_MEMORY_POLL_INTERVAL'] = str(self.resource_profiling_memory_poll_interval)
self.env['CGROUP_PID_POLL_INTERVAL'] = str(self.resource_profiling_pid_poll_interval)
self.env['CGROUP_FILE_PER_TASK'] = 'True'
self.env['CGROUP_WRITE_FILES'] = 'True'
self.env['CGROUP_DISPLAY_RECAP'] = 'False'
self.env['PYTHONPATH'] = python_path + callback_dir
if self.roles_path:
self.env['ANSIBLE_ROLES_PATH'] = ':'.join(self.roles_path)
if self.process_isolation:
self.command = self.wrap_args_with_process_isolation(self.command)
if self.resource_profiling and self.execution_mode == ExecutionMode.ANSIBLE_PLAYBOOK:
self.command = self.wrap_args_with_cgexec(self.command)
if self.fact_cache_type == 'jsonfile':
self.env['ANSIBLE_CACHE_PLUGIN'] = 'jsonfile'
self.env['ANSIBLE_CACHE_PLUGIN_CONNECTION'] = self.fact_cache
self.env["RUNNER_OMIT_EVENTS"] = str(self.omit_event_data)
self.env["RUNNER_ONLY_FAILED_EVENTS"] = str(self.only_failed_event_data)
[docs] def prepare_inventory(self):
"""
Prepares the inventory default under ``private_data_dir`` if it's not overridden by the constructor.
"""
if self.inventory is None and os.path.exists(os.path.join(self.private_data_dir, "inventory")):
self.inventory = os.path.join(self.private_data_dir, "inventory")
[docs] def prepare_env(self):
"""
Manages reading environment metadata files under ``private_data_dir`` and merging/updating
with existing values so the :py:class:`ansible_runner.runner.Runner` object can read and use them easily
"""
try:
passwords = self.loader.load_file('env/passwords', Mapping)
self.expect_passwords = {
re.compile(pattern, re.M): password
for pattern, password in iteritems(passwords)
}
except ConfigurationError:
output.debug('Not loading passwords')
self.expect_passwords = dict()
self.expect_passwords[pexpect.TIMEOUT] = None
self.expect_passwords[pexpect.EOF] = None
# seed env with existing shell env
self.env = os.environ.copy()
if self.envvars and isinstance(self.envvars, dict):
if six.PY2:
self.env.update({k.decode('utf-8'):v.decode('utf-8') for k, v in self.envvars.items()})
else:
self.env.update({k:v for k, v in self.envvars.items()})
try:
envvars = self.loader.load_file('env/envvars', Mapping)
if envvars:
self.env.update({six.text_type(k):six.text_type(v) for k, v in envvars.items()})
except ConfigurationError:
output.debug("Not loading environment vars")
# Still need to pass default environment to pexpect
try:
self.settings = self.loader.load_file('env/settings', Mapping)
except ConfigurationError:
output.debug("Not loading settings")
self.settings = dict()
try:
if self.ssh_key_data is None:
self.ssh_key_data = self.loader.load_file('env/ssh_key', string_types)
except ConfigurationError:
output.debug("Not loading ssh key")
self.ssh_key_data = None
self.idle_timeout = self.settings.get('idle_timeout', None)
self.job_timeout = self.settings.get('job_timeout', None)
self.pexpect_timeout = self.settings.get('pexpect_timeout', 5)
self.process_isolation = self.settings.get('process_isolation', self.process_isolation)
self.process_isolation_executable = self.settings.get('process_isolation_executable', self.process_isolation_executable)
self.process_isolation_path = self.settings.get('process_isolation_path', self.process_isolation_path)
self.process_isolation_hide_paths = self.settings.get('process_isolation_hide_paths', self.process_isolation_hide_paths)
self.process_isolation_show_paths = self.settings.get('process_isolation_show_paths', self.process_isolation_show_paths)
self.process_isolation_ro_paths = self.settings.get('process_isolation_ro_paths', self.process_isolation_ro_paths)
self.resource_profiling = self.settings.get('resource_profiling', self.resource_profiling)
self.resource_profiling_base_cgroup = self.settings.get('resource_profiling_base_cgroup', self.resource_profiling_base_cgroup)
self.resource_profiling_cpu_poll_interval = self.settings.get('resource_profiling_cpu_poll_interval', self.resource_profiling_cpu_poll_interval)
self.resource_profiling_memory_poll_interval = self.settings.get('resource_profiling_memory_poll_interval',
self.resource_profiling_memory_poll_interval)
self.resource_profiling_pid_poll_interval = self.settings.get('resource_profiling_pid_poll_interval', self.resource_profiling_pid_poll_interval)
self.resource_profiling_results_dir = self.settings.get('resource_profiling_results_dir', self.resource_profiling_results_dir)
self.pexpect_use_poll = self.settings.get('pexpect_use_poll', True)
self.suppress_ansible_output = self.settings.get('suppress_ansible_output', self.quiet)
self.directory_isolation_cleanup = bool(self.settings.get('directory_isolation_cleanup', True))
if 'AD_HOC_COMMAND_ID' in self.env or not os.path.exists(self.project_dir):
self.cwd = self.private_data_dir
else:
if self.directory_isolation_path is not None:
self.cwd = self.directory_isolation_path
else:
self.cwd = self.project_dir
if 'fact_cache' in self.settings:
if 'fact_cache_type' in self.settings:
if self.settings['fact_cache_type'] == 'jsonfile':
self.fact_cache = os.path.join(self.artifact_dir, self.settings['fact_cache'])
else:
self.fact_cache = os.path.join(self.artifact_dir, self.settings['fact_cache'])
[docs] def prepare_command(self):
"""
Determines if the literal ``ansible`` or ``ansible-playbook`` commands are given
and if not calls :py:meth:`ansible_runner.runner_config.RunnerConfig.generate_ansible_command`
"""
try:
cmdline_args = self.loader.load_file('args', string_types, encoding=None)
if six.PY2:
cmdline_args = ensure_binary(cmdline_args, encoding='utf-8')
self.command = shlex.split(cmdline_args)
self.execution_mode = ExecutionMode.RAW
except ConfigurationError:
self.command = self.generate_ansible_command()
[docs] def generate_ansible_command(self):
"""
Given that the ``RunnerConfig`` preparation methods have been run to gather the inputs this method
will generate the ``ansible`` or ``ansible-playbook`` command that will be used by the
:py:class:`ansible_runner.runner.Runner` object to start the process
"""
if self.binary is not None:
base_command = self.binary
self.execution_mode = ExecutionMode.RAW
elif self.module is not None:
base_command = 'ansible'
self.execution_mode = ExecutionMode.ANSIBLE
else:
base_command = 'ansible-playbook'
self.execution_mode = ExecutionMode.ANSIBLE_PLAYBOOK
exec_list = [base_command]
try:
if self.cmdline_args:
cmdline_args = self.cmdline_args
else:
cmdline_args = self.loader.load_file('env/cmdline', string_types, encoding=None)
if six.PY2:
cmdline_args = ensure_binary(cmdline_args, encoding='utf-8')
args = shlex.split(cmdline_args)
exec_list.extend(args)
except ConfigurationError:
pass
if self.inventory is None:
pass
elif isinstance(self.inventory, list):
for i in self.inventory:
exec_list.append("-i")
exec_list.append(i)
else:
exec_list.append("-i")
exec_list.append(self.inventory)
if self.limit is not None:
exec_list.append("--limit")
exec_list.append(self.limit)
if self.loader.isfile('env/extravars'):
exec_list.extend(['-e', '@{}'.format(self.loader.abspath('env/extravars'))])
if self.extra_vars:
if isinstance(self.extra_vars, dict) and self.extra_vars:
exec_list.extend(
[
'-e',
'%s' % ' '.join(
["{}=\"{}\"".format(k, self.extra_vars[k]) for k in self.extra_vars]
)
]
)
elif self.loader.isfile(self.extra_vars):
exec_list.extend(['-e', '@{}'.format(self.loader.abspath(self.extra_vars))])
if self.verbosity:
v = 'v' * self.verbosity
exec_list.append('-{}'.format(v))
if self.tags:
exec_list.extend(['--tags', '{}'.format(self.tags)])
if self.skip_tags:
exec_list.extend(['--skip-tags', '{}'.format(self.skip_tags)])
if self.forks:
exec_list.extend(['--forks', '{}'.format(self.forks)])
# Other parameters
if self.execution_mode == ExecutionMode.ANSIBLE_PLAYBOOK:
exec_list.append(self.playbook)
elif self.execution_mode == ExecutionMode.ANSIBLE:
exec_list.append("-m")
exec_list.append(self.module)
if self.module_args is not None:
exec_list.append("-a")
exec_list.append(self.module_args)
if self.host_pattern is not None:
exec_list.append(self.host_pattern)
return exec_list
[docs] def build_process_isolation_temp_dir(self):
'''
Create a temporary directory for process isolation to use.
'''
path = tempfile.mkdtemp(prefix='ansible_runner_pi_', dir=self.process_isolation_path)
os.chmod(path, stat.S_IRUSR | stat.S_IWUSR | stat.S_IXUSR)
return path
[docs] def wrap_args_with_cgexec(self, args):
'''
Wrap existing command line with cgexec in order to profile resource usage
'''
new_args = ['cgexec', '--sticky', '-g', 'cpuacct,memory,pids:{}/{}'.format(self.resource_profiling_base_cgroup, self.ident)]
new_args.extend(args)
return new_args
[docs] def wrap_args_with_process_isolation(self, args):
'''
Wrap existing command line with bwrap to restrict access to:
- self.process_isolation_path (generally, /tmp) (except for own /tmp files)
'''
cwd = os.path.realpath(self.cwd)
self.process_isolation_path_actual = self.build_process_isolation_temp_dir()
new_args = [self.process_isolation_executable or 'bwrap', '--die-with-parent', '--unshare-pid', '--dev-bind', '/', '/', '--proc', '/proc']
for path in sorted(set(self.process_isolation_hide_paths or [])):
if not os.path.exists(path):
logger.debug('hide path not found: {0}'.format(path))
continue
path = os.path.realpath(path)
if os.path.isdir(path):
new_path = tempfile.mkdtemp(dir=self.process_isolation_path_actual)
os.chmod(new_path, stat.S_IRUSR | stat.S_IWUSR | stat.S_IXUSR)
else:
handle, new_path = tempfile.mkstemp(dir=self.process_isolation_path_actual)
os.close(handle)
os.chmod(new_path, stat.S_IRUSR | stat.S_IWUSR)
new_args.extend(['--bind', '{0}'.format(new_path), '{0}'.format(path)])
if self.private_data_dir:
show_paths = [self.private_data_dir]
else:
show_paths = [cwd]
for path in sorted(set(self.process_isolation_ro_paths or [])):
if not os.path.exists(path):
logger.debug('read-only path not found: {0}'.format(path))
continue
path = os.path.realpath(path)
new_args.extend(['--ro-bind', '{0}'.format(path), '{0}'.format(path)])
show_paths.extend(self.process_isolation_show_paths or [])
for path in sorted(set(show_paths)):
if not os.path.exists(path):
logger.debug('show path not found: {0}'.format(path))
continue
path = os.path.realpath(path)
new_args.extend(['--bind', '{0}'.format(path), '{0}'.format(path)])
if self.execution_mode == ExecutionMode.ANSIBLE_PLAYBOOK:
# playbook runs should cwd to the SCM checkout dir
if self.directory_isolation_path is not None:
new_args.extend(['--chdir', os.path.realpath(self.directory_isolation_path)])
else:
new_args.extend(['--chdir', os.path.realpath(self.project_dir)])
elif self.execution_mode == ExecutionMode.ANSIBLE:
# ad-hoc runs should cwd to the root of the private data dir
new_args.extend(['--chdir', os.path.realpath(self.private_data_dir)])
new_args.extend(args)
return new_args
[docs] def wrap_args_with_ssh_agent(self, args, ssh_key_path, ssh_auth_sock=None, silence_ssh_add=False):
"""
Given an existing command line and parameterization this will return the same command line wrapped with the
necessary calls to ``ssh-agent``
"""
if ssh_key_path:
ssh_add_command = args2cmdline('ssh-add', ssh_key_path)
if silence_ssh_add:
ssh_add_command = ' '.join([ssh_add_command, '2>/dev/null'])
cmd = ' && '.join([ssh_add_command,
args2cmdline('rm', '-f', ssh_key_path),
args2cmdline(*args)])
args = ['ssh-agent']
if ssh_auth_sock:
args.extend(['-a', ssh_auth_sock])
args.extend(['sh', '-c', cmd])
return args