502 lines
18 KiB
Python
502 lines
18 KiB
Python
#!/usr/bin/python
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#
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# Copyright 2016 Red Hat | Ansible
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#
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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DOCUMENTATION = '''
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---
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module: docker_image
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short_description: Manage docker images.
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version_added: "2.1.0"
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description:
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- Build, load or pull an image, making the image available for creating containers. Also supports tagging an
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image into a repository and archiving an image to a .tar file.
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options:
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archive_path:
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description:
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- Use with state 'present' to archive an image to a .tar file.
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required: false
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default: null
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config_path:
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description:
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- Path to the Docker CLI config file.
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default: '~/.docker/config.json'
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dockerfile:
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description:
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- Use with state 'present' to provide an alternate name for the Dockerfile to use when building an image.
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default: Dockerfile
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force:
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description:
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- Use with absent state to un-tag and remove all images matching the specified name. Use with states 'present'
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and 'tagged' to take action even when an image already exists. If archive_path is specified, the force option
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will cause an existing archive to be overwritten.
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default: false
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http_timeout:
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description:
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- Timeout for HTTP requests during the image build operation. Provide a positive integer value for the number of
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seconds.
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default: null
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required: false
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name:
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description:
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- "Image name. Name format will be one of: name, repository/name, registry_server:port/name.
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When pushing or pulling an image the name can optionally include the tag by appending ':tag_name'."
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required: true
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path:
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description:
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- Use with state 'present' to build an image. Will be the path to a directory containing the context and
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Dockerfile for building an image.
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aliases:
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- build_path
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default: null
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required: false
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push:
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description:
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- "Use with state present to always push an image to the registry. The image name must contain a repository
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path and optionally a registry. For example: registry.ansible.com/user_a/repository"
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default: false
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pull:
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description:
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- When building an image downloads any updates to the FROM image in Dockerfiles.
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default: true
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rm:
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description:
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- Remove intermediate containers after build.
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default: true
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nocache:
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description:
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- Do not use cache when building an image.
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default: false
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repository:
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description:
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- Full path to a repository. Use with state 'present' to tag the image into the repository.
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required: false
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default: null
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state:
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description:
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- Make assertions about the state of an image.
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- When 'absent' an image will be removed. Use the force option to un-tag and remove all images
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matching the provided name.
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- When 'present' check if an image exists using the provided name and tag. If the image is not found or the
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force option is used, the image will either be pulled, built or loaded. By default the image will be pulled
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from Docker Hub. To build the image, provide a path value set to a directory containing a context and
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Dockerfile. To load an image, specify load_path to provide a path to an archive file. To tag an image to a
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repository, provide a repository path.
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- "NOTE: 'build' is DEPRECATED. Specifying 'build' will behave the same as 'present'."
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default: present
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choices:
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- absent
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- present
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- build (DEPRECATED)
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tag:
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description:
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- Used to select an image when pulling. Will be added to the image when pushing, tagging or building. Defaults to
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'latest' when pulling an image.
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default: latest
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use_tls:
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description:
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- "DEPRECATED. Whether to use tls to connect to the docker server. Set to 'no' when TLS will not be used. Set to
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'encrypt' to use TLS. And set to 'verify' to use TLS and verify that the server's certificate is valid for the
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server. NOTE: If you specify this option, it will set the value of the tls or tls_verify parameters."
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choices:
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- no
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- encrypt
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- verify
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default: no
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version_added: "2.0"
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extends_documentation_fragment:
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- docker
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requirements:
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- "python >= 2.6"
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- "docker-py >= 1.7.0"
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- "Docker API >= 1.20"
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authors:
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- Pavel Antonov (@softzilla)
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- Chris Houseknecht (@chouseknecht)
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- James Tanner (@jtanner)
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'''
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EXAMPLES = '''
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- name: pull an image
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docker_image:
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name: pacur/centos-7
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- name: Tag to repository in private registry
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docker_image:
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name: pacur/centos-7
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repository: registry.ansible.com/chouseknecht/centos_images
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tag: 7.0
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push: yes
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- name: Remove image
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docker_image:
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state: absent
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name: registry.ansible.com/chouseknecht/sinatra
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tag: v1
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- name: Build an image
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docker_image:
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path: ./sinatra
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name: registry.ansible.com/chouseknecht/sinatra
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tag: v1
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- name: Archive image
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docker_image:
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name: registry.ansible.com/chouseknecht/sinatra
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tag: v1
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archive_path: my_sinatra.tar
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- name: Load image from archive
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docker_image:
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name: registry.ansible.com/chouseknecht/sinatra
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tag: v1
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load_path: my_sinatra.tar
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'''
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RETURN = '''
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actions:
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description: List of actions taken by the module.
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returned: always
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type: list
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sample: [
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"Removed image myimage"
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]
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image:
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description: Facts representing the current state of the image.
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returned: always
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type: dict
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sample: {
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}
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'''
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from ansible.module_utils.docker_common import *
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try:
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from docker import auth
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from docker import utils
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except ImportError:
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# missing docker-py handled in docker_common
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pass
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class ImageManager(DockerBaseClass):
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def __init__(self, client, results):
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super(ImageManager, self).__init__()
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self.client = client
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self.results = results
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parameters = self.client.module.params
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self.check_mode = self.client.check_mode
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self.archive_path = parameters.get('archive_path')
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self.config_path = parameters.get('config_path')
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self.container_limits = parameters.get('container_limits')
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self.dockerfile = parameters.get('dockerfile')
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self.force = parameters.get('force')
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self.load_path = parameters.get('load_path')
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self.name = parameters.get('name')
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self.nocache = parameters.get('nocache')
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self.path = parameters.get('path')
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self.pull = parameters.get('pull')
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self.push = parameters.get('push')
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self.repository = parameters.get('repository')
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self.rm = parameters.get('rm')
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self.state = parameters.get('state')
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self.tag = parameters.get('tag')
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self.http_timeout = parameters.get('http_timeout')
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if self.state in ['present', 'build']:
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self.present()
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elif self.state == 'absent':
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self.absent()
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def fail(self, msg):
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self.client.fail(msg)
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def present(self):
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'''
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Handles state = 'present', which includes building, loading or pulling an image,
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depending on user provided parameters.
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:returns None
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'''
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image = self.client.find_image(name=self.name, tag=self.tag)
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if not image or self.force:
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if self.path:
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# build the image
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params = dict(
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path=self.path,
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tag=self.name,
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rm=self.rm,
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nocache=self.nocache,
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stream=True,
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timeout=self.http_timeout,
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pull=self.pull,
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forcerm=self.rm,
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dockerfile=self.dockerfile,
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decode=True
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)
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if self.tag:
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params['tag'] = "%s:%s" % (self.name, self.tag)
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if self.container_limits:
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params['container_limits'] = self.container_limits,
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self.log("Building image %s" % (params['tag']))
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if not self.check_mode:
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self.results['actions'].append("Built image %s from %s" % (params['tag'], self.path))
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for line in self.client.build(**params):
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self.log(line, pretty_print=True)
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self.results['changed'] = True
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image = self.client.find_image(name=self.name, tag=self.tag)
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if image:
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self.results['image'] = image
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elif self.load_path:
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# Load the image from an archive
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if not os.path.isfile(self.load_path):
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self.fail("Error loading image %s. Specified path %s does not exist." % (self.name,
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self.load_path))
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name = self.name
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if self.tag:
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name = "%s:%s" % (self.name, self.tag)
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if not self.check_mode:
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self.results['actions'].append("Loaded image %s from %s" % (name, self.load_path))
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try:
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self.log("Reading image data from %s" % (self.load_path))
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image_tar = open(self.load_path, 'r')
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image_data = image_tar.read()
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image_tar.close()
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except Exception, exc:
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self.fail("Error reading image data %s - %s" % (self.load_path, str(exc)))
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try:
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self.log("Loading image from %s" % (self.load_path))
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response = self.client.load_image(image_data)
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except Exception, exc:
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self.fail("Error loading image %s - %s" % (name, str(exc)))
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self.results['changed'] = True
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image = self.client.find_image(self.name, self.tag)
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if image:
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self.results['image'] = image
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else:
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# pull the image
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if not self.check_mode:
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self.results['actions'].append('Pulled image %s:%s' % (self.name, self.tag))
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self.client.pull_image(self.name, tag=self.tag)
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self.results['changed'] = True
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image = self.client.find_image(name=self.name, tag=self.tag)
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if image:
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self.results['image'] = image
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if self.archive_path:
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self.archive_image(self.name, self.tag)
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if self.push and not self.repository:
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self.push_image(self.name, self.tag)
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elif self.repository:
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self.tag_image(self.name, self.tag, self.repository, force=self.force, push=self.push)
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def absent(self):
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'''
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Handles state = 'absent', which removes an image.
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:return None
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'''
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image = self.client.find_image(self.name, self.tag)
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if image:
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name = self.name
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if self.tag:
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name = "%s:%s" % (self.name, self.tag)
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if not self.check_mode:
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try:
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self.client.remove_image(name, force=self.force)
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except Exception, exc:
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self.fail("Error removing image %s - %s" % (name, str(exc)))
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self.results['changed'] = True
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self.results['actions'].append("Removed image %s" % (name))
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self.results['image']['state'] = 'Deleted'
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def archive_image(self, name, tag):
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'''
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Archive an image to a .tar file. Called when archive_path is passed.
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:param name - name of the image. Type: str
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:return None
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'''
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if not tag:
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tag = "latest"
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image = self.client.find_image(name=name, tag=tag)
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self.log("archive image:")
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self.log(image, pretty_print=True)
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if image:
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if not os.path.isfile(self.archive_path) or self.force:
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image_name = "%s:%s" % (name, tag)
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try:
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self.log("Getting archive of image %s" % (image_name))
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image = self.client.get_image(image_name)
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except Exception, exc:
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self.fail("Error getting image %s - %s" % (image_name, str(exc)))
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if not self.check_mode:
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self.results['actions'].append('Archived image %s to %s' % (image_name, self.archive_path))
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try:
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image_tar = open(self.archive_path, 'w')
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image_tar.write(image.data)
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image_tar.close()
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except Exception, exc:
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self.fail("Error writing image archive %s - %s" % (self.archive_path, str(exc)))
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self.results['changed'] = True
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image = self.client.find_image(name=name, tag=tag)
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if image:
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self.results['image'] = image
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def push_image(self, name, tag=None):
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'''
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Push an image to a repository.
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:param name - name of the image to push. Type: str
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:param tag - use a specific tag. Type: str
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:return: None
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'''
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repository = name
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if not tag:
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repository, tag = utils.parse_repository_tag(name)
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registry, repo_name = auth.resolve_repository_name(repository)
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if registry:
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config = auth.load_config()
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if not auth.resolve_authconfig(config, registry):
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self.fail("Error: configuration for %s not found. Try logging into %s first." % registry)
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try:
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self.log("pushing image %s" % (repository))
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status = None
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if not self.check_mode:
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self.results['actions'].append("Pushed image %s to %s:%s" % (self.name, self.repository, self.tag))
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for line in self.client.push(repository, tag=tag, stream=True):
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response = json.loads(line)
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self.log(response, pretty_print=True)
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if response.get('errorDetail'):
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# there was an error
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raise Exception(response['errorDetail']['message'])
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status = response.get('status')
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self.results['changed'] = True
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image = self.client.find_image(name=repository, tag=tag)
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if image:
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self.results['image'] = image
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self.results['image']['push_status'] = status
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except Exception, exc:
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if re.search(r'unauthorized', str(exc)):
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self.fail("Error pushing image %s: %s. Does the repository exist?" % (repository, str(exc)))
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self.fail("Error pushing image %s: %s" % (repository, str(exc)))
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def tag_image(self, name, tag, repository, force=False, push=False):
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'''
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Tag an image into a repository.
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:param name: name of the image. required.
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:param tag: image tag.
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:param repository: path to the repository. required.
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:param force: bool. force tagging, even it image already exists with the repository path.
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:param push: bool. push the image once it's tagged.
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:return: None
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'''
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repo, repo_tag = utils.parse_repository_tag(repository)
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image = self.client.find_image(name=repo, tag=repo_tag)
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found = 'found' if image else 'not found'
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self.log("image %s was %s" % (repo, found))
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if not image or force:
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try:
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self.log("tagging %s:%s to %s" % (name, tag, repository))
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self.results['changed'] = True
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if not self.check_mode:
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self.results['actions'].append("Tagged image %s:%s to %s" % (name, tag, repository))
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# Finding the image does not always work, especially running a localhost registry. In those
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# cases, if we don't set force=True, it errors.
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tag_status = self.client.tag(name, repository, tag=tag, force=True)
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if not tag_status:
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raise Exception("Tag operation failed.")
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image = self.client.find_image(name=repository, tag=tag)
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if image:
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self.results['image'] = image
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except Exception, exc:
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self.fail("Error: failed to tag image %s - %s" % (name, str(exc)))
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if push:
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self.log("push %s with tag %s" % (repository, tag))
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self.push_image(repository, tag)
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def main():
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argument_spec = dict(
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archive_path=dict(type='str'),
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config_path=dict(type='str'),
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container_limits=dict(type='dict'),
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dockerfile=dict(type='str'),
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force=dict(type='bool', default=False),
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http_timeout=dict(type='int'),
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load_path=dict(type='str'),
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name=dict(type='str', required=True),
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nocache=dict(type='str', default=False),
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path=dict(type='str', aliases=['build_path']),
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pull=dict(type='bool', default=True),
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push=dict(type='bool', default=False),
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repository=dict(type='str'),
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rm=dict(type='bool', default=True),
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state=dict(type='str', choices=['absent', 'present'], default='present'),
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tag=dict(type='str', default='latest'),
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use_tls=dict(type='str', default='no', choices=['no', 'encrypt', 'verify'])
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)
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client = AnsibleDockerClient(
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argument_spec=argument_spec,
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supports_check_mode=True,
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)
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results = dict(
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changed=False,
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actions=[],
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image={}
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)
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ImageManager(client, results)
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client.module.exit_json(**results)
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# import module snippets
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from ansible.module_utils.basic import *
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if __name__ == '__main__':
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main()
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