Add promote container images role

Change-Id: I8ef9ae344e65d8c63b2cf72ec756960b65d44413

roles/nebulous-promote-container-image/defaults/main.yaml

@@ -0,0 +1,2 @@
+zuul_work_dir: "{{ zuul.project.src_dir }}"
+promote_container_image_query: "change={{ zuul.change }}&patchset={{ zuul.patchset }}&pipeline={{ promote_container_image_pipeline }}&job_name={{ promote_container_image_job }}"

roles/nebulous-promote-container-image/tasks/main.yaml

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+- name: Verify repository names
+  when: |
+    container_registry_credentials is defined
+    and zj_image.registry not in container_registry_credentials
+  loop: "{{ container_images }}"
+  loop_control:
+    loop_var: zj_image
+  fail:
+    msg: "{{ zj_image.registry }} credentials not found"
+
+- name: Verify repository permission
+  when: |
+    container_registry_credentials[zj_image.registry].repository is defined and
+    not zj_image.repository | regex_search(container_registry_credentials[zj_image.registry].repository)
+  loop: "{{ container_images }}"
+  loop_control:
+    loop_var: zj_image
+  fail:
+    msg: "{{ zj_image.repository }} not permitted by {{ container_registry_credentials[zj_image.registry].repository }}"
+
+- name: Promote image
+  when: promote_container_image_method|default('tag') == 'tag'
+  loop: "{{ container_images }}"
+  loop_control:
+    loop_var: zj_image
+  include_tasks: promote-retag.yaml
+
+- name: Promote container image with intermediate registry
+  when: promote_container_image_method|default('tag') == 'intermediate-registry'
+  include_tasks: promote-from-intermediate-registry.yaml

roles/nebulous-promote-container-image/tasks/promote-from-intermediate-registry.yaml

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+- name: Query Zuul API for image information
+  uri:
+    url: "{{ promote_container_image_api }}/builds?{{ promote_container_image_query }}"
+  register: build
+
+- name: Parse build response
+  set_fact:
+    build: "{{ build.json[0] }}"
+
+- name: Map image artifacts
+  set_fact:
+    zj_artifact_map: "{{ zj_artifact_map | default({}) | combine({zj_map_item.metadata.repository + ':' + zj_map_item.metadata.tag: zj_map_item.url}) }}"
+  loop_control:
+    loop_var: zj_map_item
+  loop: "{{ build | json_query(\"artifacts[?metadata.type=='container_image']\")}}"
+
+- name: Promote image
+  loop: "{{ container_images }}"
+  loop_control:
+    loop_var: zj_image
+  include_tasks: promote-registry.yaml

roles/nebulous-promote-container-image/tasks/promote-registry.yaml

@@ -0,0 +1,37 @@
+- name: Log in to registry
+  no_log: true
+  command: >-
+    skopeo login {{ zj_image.registry }} -u {{ container_registry_credentials[zj_image.registry].username }} -p {{ container_registry_credentials[zj_image.registry].password }}
+  register: result
+  until: result.rc == 0
+  retries: 3
+  delay: 30
+
+- name: Copy image
+  block:
+
+    - name: Copy image using the commit id
+      loop: "{{ zj_image.tags | default(['latest']) }}"
+      loop_control:
+        loop_var: zj_image_tag
+      command: >-
+        skopeo --insecure-policy copy --all {{ zj_artifact_map[zj_image.repository + ':' + zj_image_tag] }} docker://{{ zj_image.repository }}:{{ zuul.commit_id }}
+      register: result
+      until: result.rc == 0
+      retries: 3
+      delay: 30
+
+    - name: Copy image using the tag
+      loop: "{{ zj_image.tags | default(['latest']) }}"
+      loop_control:
+        loop_var: zj_image_tag
+      command: >-
+        skopeo --insecure-policy copy --all {{ zj_artifact_map[zj_image.repository + ':' + zj_image_tag] }} docker://{{ zj_image.repository }}:{{ zj_image_tag }}
+      register: result
+      until: result.rc == 0
+      retries: 3
+      delay: 30
+
+  always:
+    - name: Log out of registry
+      command: "skopeo logout {{ zj_image.registry }}"

roles/nebulous-promote-container-image/tasks/promote-retag-inner.yaml

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+- name: Set promote_tag_prefix
+  set_fact:
+    promote_tag_prefix: "{{ ('change_' + zuul.change) if (zuul.change is defined) else zuul.pipeline }}"
+
+- name: Create the final image tag
+  command: >-
+    skopeo --insecure-policy copy --all docker://{{ zj_image.repository }}:{{ promote_tag_prefix }}_{{ zj_image_tag }} docker://{{ zj_image.repository }}:{{ zj_image_tag }}
+  register: result
+  until: result.rc == 0
+  retries: 3
+  delay: 30
+
+- name: Delete the temporary change tag we just renamed
+  include_role:
+    name: remove-registry-tag
+  vars:
+    remove_registry_tag_repository: '{{ zj_image.repository }}'
+    remove_registry_tag_tag: '{{ promote_tag_prefix }}_{{ zj_image_tag }}'
+  no_log: true

roles/nebulous-promote-container-image/tasks/promote-retag.yaml

@@ -0,0 +1,28 @@
+- name: Log in to registry
+  no_log: true
+  command: >-
+    skopeo login {{ zj_image.registry }} -u {{ container_registry_credentials[zj_image.registry].username }} -p {{ container_registry_credentials[zj_image.registry].password }}
+  register: result
+  until: result.rc == 0
+  retries: 3
+  delay: 30
+
+- name: Retag image
+  block:
+    - name: Retag image
+      loop: "{{ zj_image.tags | default(['latest']) }}"
+      loop_control:
+        loop_var: zj_image_tag
+      include_tasks: promote-retag-inner.yaml
+  always:
+    - name: Log out of registry
+      command: "skopeo logout {{ zj_image.registry }}"
+
+# If a gate job failed, we might have uploaded and leaked tags.  This
+# cleans up anything around for more than 24 hours
+- name: Cleanup leaked images
+  include_role:
+    name: remove-registry-tag
+  vars:
+    remove_registry_tag_repository: '{{ zj_image.repository }}'
+  no_log: true