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Add docker_image_load module (#90)
* Add docker_image_load module. * Polish module. * Fix bug and add tests. * Apply suggestions from code review Co-authored-by: Amin Vakil <info@aminvakil.com> * Make sure that containers that still exist are also cleared. * Always return stdout. * Try to work around removal problems. * Accept that the Docker daemon sometimes only reports the named image. * More debug output. * Also prune containers, in the hope that these cause the problems. * Let's see whether pruning containers (but not images) is enough. * Apply suggestions from code review Co-authored-by: Andrew Klychkov <aaklychkov@mail.ru> * Update plugins/modules/docker_image_load.py Co-authored-by: Andrew Klychkov <aaklychkov@mail.ru> Co-authored-by: Amin Vakil <info@aminvakil.com> Co-authored-by: Andrew Klychkov <aaklychkov@mail.ru>
This commit is contained in:
Felix Fontein
GitHub
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shippable/posix/group4
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destructive
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---
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dependencies:
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- setup_docker
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####################################################################
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# WARNING: These are designed specifically for Ansible tests #
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# and should not be used as examples of how to write Ansible roles #
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####################################################################
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- when: ansible_facts.distribution ~ ansible_facts.distribution_major_version not in ['CentOS6', 'RedHat6']
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include_tasks:
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file: test.yml
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---
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- name: "Loading tasks from {{ item }}"
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include_tasks: "{{ item }}"
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---
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- name: Create random name prefix
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set_fact:
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name_prefix: "{{ 'ansible-test-%0x' % ((2**32) | random) }}"
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- name: Create image and container list
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set_fact:
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inames: []
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cnames: []
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- debug:
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msg: "Using name prefix {{ name_prefix }}"
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- block:
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- include_tasks: run-test.yml
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with_fileglob:
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- "tests/*.yml"
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always:
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- name: "Make sure all images are removed"
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docker_image:
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name: "{{ item }}"
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state: absent
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with_items: "{{ inames }}"
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- name: "Make sure all containers are removed"
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docker_container:
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name: "{{ item }}"
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state: absent
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force_kill: yes
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with_items: "{{ cnames }}"
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when: docker_py_version is version('2.5.0', '>=') and docker_api_version is version('1.23', '>=')
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- fail: msg="Too old docker / docker-py version to run docker_image tests!"
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when: not(docker_py_version is version('2.5.0', '>=') and docker_api_version is version('1.23', '>=')) and (ansible_distribution != 'CentOS' or ansible_distribution_major_version|int > 6)
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---
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- set_fact:
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image_names:
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- "{{ docker_test_image_hello_world }}"
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- "{{ docker_test_image_busybox }}"
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- "{{ docker_test_image_alpine }}"
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- name: Make sure images are there
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docker_image:
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name: "{{ item }}"
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source: pull
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register: images
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loop: "{{ image_names }}"
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- name: Compile list of all image names and IDs
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set_fact:
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image_ids: "{{ images.results | map(attribute='image') | map(attribute='Id') | list }}"
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all_images: "{{ image_names + (images.results | map(attribute='image') | map(attribute='Id') | list) }}"
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- name: Create archives
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command: docker save {{ item.images | join(' ') }} -o {{ output_dir }}/{{ item.file }}
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loop:
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- file: archive-1.tar
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images: "{{ image_names }}"
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- file: archive-2.tar
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images: "{{ image_ids }}"
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- file: archive-3.tar
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images:
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- "{{ image_names[0] }}"
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- "{{ image_ids[1] }}"
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- file: archive-4.tar
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images:
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- "{{ image_ids[0] }}"
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- "{{ image_names[0] }}"
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- file: archive-5.tar
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images:
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- "{{ image_ids[0] }}"
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# All images by IDs
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- name: Remove all images
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docker_image:
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name: "{{ item }}"
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state: absent
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force_absent: true
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loop: "{{ all_images }}"
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ignore_errors: true
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register: remove_all_images
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- name: Prune all containers (if removing failed)
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docker_prune:
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containers: true
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when: remove_all_images is failed
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- name: Obtain all docker containers and images (if removing failed)
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shell: docker ps -a ; docker images -a
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when: remove_all_images is failed
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register: docker_container_image_list
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- name: Show all docker containers and images (if removing failed)
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debug:
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var: docker_container_image_list.stdout_lines
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when: remove_all_images is failed
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- name: Remove all images (after pruning)
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docker_image:
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name: "{{ item }}"
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state: absent
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force_absent: true
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loop: "{{ all_images }}"
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when: remove_all_images is failed
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- name: Load all images (IDs)
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docker_image_load:
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path: "{{ output_dir }}/archive-2.tar"
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register: result
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- name: Print loaded image names
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debug:
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var: result.image_names
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- assert:
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that:
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- result is changed
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- result.image_names | sort == image_ids | sort
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- result.image_names | length == result.images | length
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- name: Load all images (IDs, should be same result)
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docker_image_load:
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path: "{{ output_dir }}/archive-2.tar"
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register: result_2
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- name: Print loaded image names
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debug:
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var: result_2.image_names
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- assert:
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that:
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- result_2 is changed
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- result_2.image_names | sort == image_ids | sort
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- result_2.image_names | length == result_2.images | length
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# Mixed images and IDs
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- name: Remove all images
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docker_image:
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name: "{{ item }}"
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state: absent
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loop: "{{ all_images }}"
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- name: Load all images (mixed images and IDs)
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docker_image_load:
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path: "{{ output_dir }}/archive-3.tar"
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register: result
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- name: Print loading log
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debug:
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var: result.stdout_lines
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- name: Print loaded image names
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debug:
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var: result.image_names
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- assert:
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that:
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- result is changed
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# For some reason, *sometimes* only the named image is found; in fact, in that case, the log only mentions that image and nothing else
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- "result.images | length == 3 or ('Loaded image: ' ~ docker_test_image_hello_world) == result.stdout"
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- (result.image_names | sort) in [[image_names[0], image_ids[0], image_ids[1]] | sort, [image_names[0]]]
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- result.images | length in [1, 3]
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- (result.images | map(attribute='Id') | sort) in [[image_ids[0], image_ids[0], image_ids[1]] | sort, [image_ids[0]]]
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# Same image twice
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- name: Remove all images
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docker_image:
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name: "{{ item }}"
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state: absent
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loop: "{{ all_images }}"
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- name: Load all images (same image twice)
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docker_image_load:
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path: "{{ output_dir }}/archive-4.tar"
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register: result
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- name: Print loaded image names
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debug:
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var: result.image_names
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- assert:
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that:
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- result is changed
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- result.image_names | length == 1
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- result.image_names[0] == image_names[0]
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- result.images | length == 1
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- result.images[0].Id == image_ids[0]
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# Single image by ID
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- name: Remove all images
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docker_image:
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name: "{{ item }}"
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state: absent
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loop: "{{ all_images }}"
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- name: Load all images (single image by ID)
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docker_image_load:
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path: "{{ output_dir }}/archive-5.tar"
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register: result
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- name: Print loaded image names
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debug:
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var: result.image_names
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- assert:
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that:
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- result is changed
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- result.image_names | length == 1
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- result.image_names[0] == image_ids[0]
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- result.images | length == 1
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- result.images[0].Id == image_ids[0]
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- name: Try to get image info by name
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docker_image_info:
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name: "{{ image_names[0] }}"
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register: result
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- name: Make sure that image does not exist by name
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assert:
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that:
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- result.images | length == 0
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# All images by names
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- name: Remove all images
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docker_image:
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name: "{{ item }}"
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state: absent
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loop: "{{ all_images }}"
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- name: Load all images (names)
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docker_image_load:
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path: "{{ output_dir }}/archive-1.tar"
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register: result
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- name: Print loaded image names
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debug:
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var: result.image_names
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- assert:
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that:
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- result.image_names | sort == image_names | sort
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- result.image_names | length == result.images | length
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