459 lines
18 KiB
Python
459 lines
18 KiB
Python
#
|
|
# Copyright 2016 Red Hat | Ansible
|
|
#
|
|
# This file is part of Ansible
|
|
#
|
|
# Ansible is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# Ansible is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
import os
|
|
import re
|
|
import json
|
|
import sys
|
|
import copy
|
|
from distutils.version import LooseVersion
|
|
|
|
from ansible.module_utils.basic import AnsibleModule
|
|
from ansible.module_utils.six.moves.urllib.parse import urlparse
|
|
from ansible.module_utils.parsing.convert_bool import BOOLEANS_TRUE, BOOLEANS_FALSE
|
|
|
|
HAS_DOCKER_PY = True
|
|
HAS_DOCKER_PY_2 = False
|
|
HAS_DOCKER_PY_3 = False
|
|
HAS_DOCKER_ERROR = None
|
|
|
|
try:
|
|
from requests.exceptions import SSLError
|
|
from docker import __version__ as docker_version
|
|
from docker.errors import APIError, TLSParameterError, NotFound
|
|
from docker.tls import TLSConfig
|
|
from docker.constants import DEFAULT_TIMEOUT_SECONDS, DEFAULT_DOCKER_API_VERSION
|
|
from docker import auth
|
|
|
|
if LooseVersion(docker_version) >= LooseVersion('3.0.0'):
|
|
HAS_DOCKER_PY_3 = True
|
|
from docker import APIClient as Client
|
|
from docker.types import Ulimit, LogConfig
|
|
elif LooseVersion(docker_version) >= LooseVersion('2.0.0'):
|
|
HAS_DOCKER_PY_2 = True
|
|
from docker import APIClient as Client
|
|
from docker.types import Ulimit, LogConfig
|
|
else:
|
|
from docker import Client
|
|
from docker.utils.types import Ulimit, LogConfig
|
|
|
|
except ImportError as exc:
|
|
HAS_DOCKER_ERROR = str(exc)
|
|
HAS_DOCKER_PY = False
|
|
|
|
DEFAULT_DOCKER_HOST = 'unix://var/run/docker.sock'
|
|
DEFAULT_TLS = False
|
|
DEFAULT_TLS_VERIFY = False
|
|
MIN_DOCKER_VERSION = "1.7.0"
|
|
|
|
DOCKER_COMMON_ARGS = dict(
|
|
docker_host=dict(type='str', aliases=['docker_url']),
|
|
tls_hostname=dict(type='str'),
|
|
api_version=dict(type='str', aliases=['docker_api_version']),
|
|
timeout=dict(type='int'),
|
|
cacert_path=dict(type='str', aliases=['tls_ca_cert']),
|
|
cert_path=dict(type='str', aliases=['tls_client_cert']),
|
|
key_path=dict(type='str', aliases=['tls_client_key']),
|
|
ssl_version=dict(type='str'),
|
|
tls=dict(type='bool'),
|
|
tls_verify=dict(type='bool'),
|
|
debug=dict(type='bool', default=False),
|
|
filter_logger=dict(type='bool', default=False),
|
|
)
|
|
|
|
DOCKER_MUTUALLY_EXCLUSIVE = [
|
|
['tls', 'tls_verify']
|
|
]
|
|
|
|
DOCKER_REQUIRED_TOGETHER = [
|
|
['cert_path', 'key_path']
|
|
]
|
|
|
|
DEFAULT_DOCKER_REGISTRY = 'https://index.docker.io/v1/'
|
|
EMAIL_REGEX = r'[^@]+@[^@]+\.[^@]+'
|
|
BYTE_SUFFIXES = ['B', 'KB', 'MB', 'GB', 'TB', 'PB']
|
|
|
|
|
|
if not HAS_DOCKER_PY:
|
|
# No docker-py. Create a place holder client to allow
|
|
# instantiation of AnsibleModule and proper error handing
|
|
class Client(object):
|
|
def __init__(self, **kwargs):
|
|
pass
|
|
|
|
class APIError(Exception):
|
|
pass
|
|
|
|
|
|
class DockerBaseClass(object):
|
|
|
|
def __init__(self):
|
|
self.debug = False
|
|
|
|
def log(self, msg, pretty_print=False):
|
|
pass
|
|
# if self.debug:
|
|
# log_file = open('docker.log', 'a')
|
|
# if pretty_print:
|
|
# log_file.write(json.dumps(msg, sort_keys=True, indent=4, separators=(',', ': ')))
|
|
# log_file.write(u'\n')
|
|
# else:
|
|
# log_file.write(msg + u'\n')
|
|
|
|
|
|
class AnsibleDockerClient(Client):
|
|
|
|
def __init__(self, argument_spec=None, supports_check_mode=False, mutually_exclusive=None,
|
|
required_together=None, required_if=None):
|
|
|
|
merged_arg_spec = dict()
|
|
merged_arg_spec.update(DOCKER_COMMON_ARGS)
|
|
if argument_spec:
|
|
merged_arg_spec.update(argument_spec)
|
|
self.arg_spec = merged_arg_spec
|
|
|
|
mutually_exclusive_params = []
|
|
mutually_exclusive_params += DOCKER_MUTUALLY_EXCLUSIVE
|
|
if mutually_exclusive:
|
|
mutually_exclusive_params += mutually_exclusive
|
|
|
|
required_together_params = []
|
|
required_together_params += DOCKER_REQUIRED_TOGETHER
|
|
if required_together:
|
|
required_together_params += required_together
|
|
|
|
self.module = AnsibleModule(
|
|
argument_spec=merged_arg_spec,
|
|
supports_check_mode=supports_check_mode,
|
|
mutually_exclusive=mutually_exclusive_params,
|
|
required_together=required_together_params,
|
|
required_if=required_if)
|
|
|
|
if not HAS_DOCKER_PY:
|
|
self.fail("Failed to import docker-py - %s. Try `pip install docker-py`" % HAS_DOCKER_ERROR)
|
|
|
|
if LooseVersion(docker_version) < LooseVersion(MIN_DOCKER_VERSION):
|
|
self.fail("Error: docker-py version is %s. Minimum version required is %s." % (docker_version,
|
|
MIN_DOCKER_VERSION))
|
|
|
|
self.debug = self.module.params.get('debug')
|
|
self.check_mode = self.module.check_mode
|
|
self._connect_params = self._get_connect_params()
|
|
|
|
try:
|
|
super(AnsibleDockerClient, self).__init__(**self._connect_params)
|
|
except APIError as exc:
|
|
self.fail("Docker API error: %s" % exc)
|
|
except Exception as exc:
|
|
self.fail("Error connecting: %s" % exc)
|
|
|
|
def log(self, msg, pretty_print=False):
|
|
pass
|
|
# if self.debug:
|
|
# log_file = open('docker.log', 'a')
|
|
# if pretty_print:
|
|
# log_file.write(json.dumps(msg, sort_keys=True, indent=4, separators=(',', ': ')))
|
|
# log_file.write(u'\n')
|
|
# else:
|
|
# log_file.write(msg + u'\n')
|
|
|
|
def fail(self, msg):
|
|
self.module.fail_json(msg=msg)
|
|
|
|
@staticmethod
|
|
def _get_value(param_name, param_value, env_variable, default_value):
|
|
if param_value is not None:
|
|
# take module parameter value
|
|
if param_value in BOOLEANS_TRUE:
|
|
return True
|
|
if param_value in BOOLEANS_FALSE:
|
|
return False
|
|
return param_value
|
|
|
|
if env_variable is not None:
|
|
env_value = os.environ.get(env_variable)
|
|
if env_value is not None:
|
|
# take the env variable value
|
|
if param_name == 'cert_path':
|
|
return os.path.join(env_value, 'cert.pem')
|
|
if param_name == 'cacert_path':
|
|
return os.path.join(env_value, 'ca.pem')
|
|
if param_name == 'key_path':
|
|
return os.path.join(env_value, 'key.pem')
|
|
if env_value in BOOLEANS_TRUE:
|
|
return True
|
|
if env_value in BOOLEANS_FALSE:
|
|
return False
|
|
return env_value
|
|
|
|
# take the default
|
|
return default_value
|
|
|
|
@property
|
|
def auth_params(self):
|
|
# Get authentication credentials.
|
|
# Precedence: module parameters-> environment variables-> defaults.
|
|
|
|
self.log('Getting credentials')
|
|
|
|
params = dict()
|
|
for key in DOCKER_COMMON_ARGS:
|
|
params[key] = self.module.params.get(key)
|
|
|
|
if self.module.params.get('use_tls'):
|
|
# support use_tls option in docker_image.py. This will be deprecated.
|
|
use_tls = self.module.params.get('use_tls')
|
|
if use_tls == 'encrypt':
|
|
params['tls'] = True
|
|
if use_tls == 'verify':
|
|
params['tls_verify'] = True
|
|
|
|
result = dict(
|
|
docker_host=self._get_value('docker_host', params['docker_host'], 'DOCKER_HOST',
|
|
DEFAULT_DOCKER_HOST),
|
|
tls_hostname=self._get_value('tls_hostname', params['tls_hostname'],
|
|
'DOCKER_TLS_HOSTNAME', 'localhost'),
|
|
api_version=self._get_value('api_version', params['api_version'], 'DOCKER_API_VERSION',
|
|
'auto'),
|
|
cacert_path=self._get_value('cacert_path', params['cacert_path'], 'DOCKER_CERT_PATH', None),
|
|
cert_path=self._get_value('cert_path', params['cert_path'], 'DOCKER_CERT_PATH', None),
|
|
key_path=self._get_value('key_path', params['key_path'], 'DOCKER_CERT_PATH', None),
|
|
ssl_version=self._get_value('ssl_version', params['ssl_version'], 'DOCKER_SSL_VERSION', None),
|
|
tls=self._get_value('tls', params['tls'], 'DOCKER_TLS', DEFAULT_TLS),
|
|
tls_verify=self._get_value('tls_verfy', params['tls_verify'], 'DOCKER_TLS_VERIFY',
|
|
DEFAULT_TLS_VERIFY),
|
|
timeout=self._get_value('timeout', params['timeout'], 'DOCKER_TIMEOUT',
|
|
DEFAULT_TIMEOUT_SECONDS),
|
|
)
|
|
|
|
if result['tls_hostname'] is None:
|
|
# get default machine name from the url
|
|
parsed_url = urlparse(result['docker_host'])
|
|
if ':' in parsed_url.netloc:
|
|
result['tls_hostname'] = parsed_url.netloc[:parsed_url.netloc.rindex(':')]
|
|
else:
|
|
result['tls_hostname'] = parsed_url
|
|
|
|
return result
|
|
|
|
def _get_tls_config(self, **kwargs):
|
|
self.log("get_tls_config:")
|
|
for key in kwargs:
|
|
self.log(" %s: %s" % (key, kwargs[key]))
|
|
try:
|
|
tls_config = TLSConfig(**kwargs)
|
|
return tls_config
|
|
except TLSParameterError as exc:
|
|
self.fail("TLS config error: %s" % exc)
|
|
|
|
def _get_connect_params(self):
|
|
auth = self.auth_params
|
|
|
|
self.log("connection params:")
|
|
for key in auth:
|
|
self.log(" %s: %s" % (key, auth[key]))
|
|
|
|
if auth['tls'] or auth['tls_verify']:
|
|
auth['docker_host'] = auth['docker_host'].replace('tcp://', 'https://')
|
|
|
|
if auth['tls'] and auth['cert_path'] and auth['key_path']:
|
|
# TLS with certs and no host verification
|
|
tls_config = self._get_tls_config(client_cert=(auth['cert_path'], auth['key_path']),
|
|
verify=False,
|
|
ssl_version=auth['ssl_version'])
|
|
return dict(base_url=auth['docker_host'],
|
|
tls=tls_config,
|
|
version=auth['api_version'],
|
|
timeout=auth['timeout'])
|
|
|
|
if auth['tls']:
|
|
# TLS with no certs and not host verification
|
|
tls_config = self._get_tls_config(verify=False,
|
|
ssl_version=auth['ssl_version'])
|
|
return dict(base_url=auth['docker_host'],
|
|
tls=tls_config,
|
|
version=auth['api_version'],
|
|
timeout=auth['timeout'])
|
|
|
|
if auth['tls_verify'] and auth['cert_path'] and auth['key_path']:
|
|
# TLS with certs and host verification
|
|
if auth['cacert_path']:
|
|
tls_config = self._get_tls_config(client_cert=(auth['cert_path'], auth['key_path']),
|
|
ca_cert=auth['cacert_path'],
|
|
verify=True,
|
|
assert_hostname=auth['tls_hostname'],
|
|
ssl_version=auth['ssl_version'])
|
|
else:
|
|
tls_config = self._get_tls_config(client_cert=(auth['cert_path'], auth['key_path']),
|
|
verify=True,
|
|
assert_hostname=auth['tls_hostname'],
|
|
ssl_version=auth['ssl_version'])
|
|
|
|
return dict(base_url=auth['docker_host'],
|
|
tls=tls_config,
|
|
version=auth['api_version'],
|
|
timeout=auth['timeout'])
|
|
|
|
if auth['tls_verify'] and auth['cacert_path']:
|
|
# TLS with cacert only
|
|
tls_config = self._get_tls_config(ca_cert=auth['cacert_path'],
|
|
assert_hostname=auth['tls_hostname'],
|
|
verify=True,
|
|
ssl_version=auth['ssl_version'])
|
|
return dict(base_url=auth['docker_host'],
|
|
tls=tls_config,
|
|
version=auth['api_version'],
|
|
timeout=auth['timeout'])
|
|
|
|
if auth['tls_verify']:
|
|
# TLS with verify and no certs
|
|
tls_config = self._get_tls_config(verify=True,
|
|
assert_hostname=auth['tls_hostname'],
|
|
ssl_version=auth['ssl_version'])
|
|
return dict(base_url=auth['docker_host'],
|
|
tls=tls_config,
|
|
version=auth['api_version'],
|
|
timeout=auth['timeout'])
|
|
# No TLS
|
|
return dict(base_url=auth['docker_host'],
|
|
version=auth['api_version'],
|
|
timeout=auth['timeout'])
|
|
|
|
def _handle_ssl_error(self, error):
|
|
match = re.match(r"hostname.*doesn\'t match (\'.*\')", str(error))
|
|
if match:
|
|
self.fail("You asked for verification that Docker host name matches %s. The actual hostname is %s. "
|
|
"Most likely you need to set DOCKER_TLS_HOSTNAME or pass tls_hostname with a value of %s. "
|
|
"You may also use TLS without verification by setting the tls parameter to true."
|
|
% (self.auth_params['tls_hostname'], match.group(1), match.group(1)))
|
|
self.fail("SSL Exception: %s" % (error))
|
|
|
|
def get_container(self, name=None):
|
|
'''
|
|
Lookup a container and return the inspection results.
|
|
'''
|
|
if name is None:
|
|
return None
|
|
|
|
search_name = name
|
|
if not name.startswith('/'):
|
|
search_name = '/' + name
|
|
|
|
result = None
|
|
try:
|
|
for container in self.containers(all=True):
|
|
self.log("testing container: %s" % (container['Names']))
|
|
if isinstance(container['Names'], list) and search_name in container['Names']:
|
|
result = container
|
|
break
|
|
if container['Id'].startswith(name):
|
|
result = container
|
|
break
|
|
if container['Id'] == name:
|
|
result = container
|
|
break
|
|
except SSLError as exc:
|
|
self._handle_ssl_error(exc)
|
|
except Exception as exc:
|
|
self.fail("Error retrieving container list: %s" % exc)
|
|
|
|
if result is not None:
|
|
try:
|
|
self.log("Inspecting container Id %s" % result['Id'])
|
|
result = self.inspect_container(container=result['Id'])
|
|
self.log("Completed container inspection")
|
|
except Exception as exc:
|
|
self.fail("Error inspecting container: %s" % exc)
|
|
|
|
return result
|
|
|
|
def find_image(self, name, tag):
|
|
'''
|
|
Lookup an image and return the inspection results.
|
|
'''
|
|
if not name:
|
|
return None
|
|
|
|
self.log("Find image %s:%s" % (name, tag))
|
|
images = self._image_lookup(name, tag)
|
|
if len(images) == 0:
|
|
# In API <= 1.20 seeing 'docker.io/<name>' as the name of images pulled from docker hub
|
|
registry, repo_name = auth.resolve_repository_name(name)
|
|
if registry == 'docker.io':
|
|
# the name does not contain a registry, so let's see if docker.io works
|
|
lookup = "docker.io/%s" % name
|
|
self.log("Check for docker.io image: %s" % lookup)
|
|
images = self._image_lookup(lookup, tag)
|
|
|
|
if len(images) > 1:
|
|
self.fail("Registry returned more than one result for %s:%s" % (name, tag))
|
|
|
|
if len(images) == 1:
|
|
try:
|
|
inspection = self.inspect_image(images[0]['Id'])
|
|
except Exception as exc:
|
|
self.fail("Error inspecting image %s:%s - %s" % (name, tag, str(exc)))
|
|
return inspection
|
|
|
|
self.log("Image %s:%s not found." % (name, tag))
|
|
return None
|
|
|
|
def _image_lookup(self, name, tag):
|
|
'''
|
|
Including a tag in the name parameter sent to the docker-py images method does not
|
|
work consistently. Instead, get the result set for name and manually check if the tag
|
|
exists.
|
|
'''
|
|
try:
|
|
response = self.images(name=name)
|
|
except Exception as exc:
|
|
self.fail("Error searching for image %s - %s" % (name, str(exc)))
|
|
images = response
|
|
if tag:
|
|
lookup = "%s:%s" % (name, tag)
|
|
images = []
|
|
for image in response:
|
|
tags = image.get('RepoTags')
|
|
if tags and lookup in tags:
|
|
images = [image]
|
|
break
|
|
return images
|
|
|
|
def pull_image(self, name, tag="latest"):
|
|
'''
|
|
Pull an image
|
|
'''
|
|
self.log("Pulling image %s:%s" % (name, tag))
|
|
old_tag = self.find_image(name, tag)
|
|
try:
|
|
for line in self.pull(name, tag=tag, stream=True, decode=True):
|
|
self.log(line, pretty_print=True)
|
|
if line.get('error'):
|
|
if line.get('errorDetail'):
|
|
error_detail = line.get('errorDetail')
|
|
self.fail("Error pulling %s - code: %s message: %s" % (name,
|
|
error_detail.get('code'),
|
|
error_detail.get('message')))
|
|
else:
|
|
self.fail("Error pulling %s - %s" % (name, line.get('error')))
|
|
except Exception as exc:
|
|
self.fail("Error pulling image %s:%s - %s" % (name, tag, str(exc)))
|
|
|
|
new_tag = self.find_image(name, tag)
|
|
|
|
return new_tag, old_tag == new_tag
|