Add role for updating meta information of CVMFS servers and repositories

inventory/group_vars/all.yml

@@ -5,7 +5,7 @@
 eessi_cvmfs_repos_enabled: true
 
 # Email address for the project.
-eessi_email: [email protected]
+eessi_email: [email protected]
 
 #
 # Defaults for eessi-hpc.org repos.
@@ -87,6 +87,7 @@ eessi_cvmfs_repositories:
       - CVMFS_GARBAGE_COLLECTION=true
     client_options: []
     use_for_ci: false
+    description: Repository containing pilot versions of the EESSI software stack.
   - repository: data.eessi-hpc.org
     stratum0: rug-nl.stratum0.cvmfs.eessi-infra.org
     owner: "{{ cvmfs_repo_owner | default('root') }}"
@@ -97,6 +98,7 @@ eessi_cvmfs_repositories:
       - CVMFS_GARBAGE_COLLECTION=true
     client_options: []
     use_for_ci: false
+    description: "Data files used for applications available in the EESSI stack."
   - repository: ci.eessi-hpc.org
     stratum0: rug-nl.stratum0.cvmfs.eessi-infra.org
     owner: "{{ cvmfs_repo_owner | default('root') }}"
@@ -106,6 +108,15 @@ eessi_cvmfs_repositories:
       - CVMFS_GARBAGE_COLLECTION=true
     client_options: []
     use_for_ci: true
+    description: "Small-sized repository used for CI purposes."
+
+# Meta information for CVMFS Stratum servers
+cvmfs_server_meta_administrator: "EESSI CVMFS Administrators"
+cvmfs_server_meta_email: "{{ eessi_email }}"
+cvmfs_server_meta_organisation: "EESSI"
+cvmfs_server_meta_custom:
+  _comment: "See https://eessi.io/docs/ for more information about the EESSI repository."
+cvmfs_server_meta_website: "https://eessi.io"
 
 # Override all the Galaxy defaults by our EESSI defaults.
 # This is required, beucase the galaxy_* variables are used inside the Ansible tasks.

roles/cvmfs_server_meta_info/defaults/main.yml

@@ -0,0 +1,18 @@
+---
+cvmfs_server_meta:
+  administrator: "{{ cvmfs_server_meta_administrator | default('Your Name') }}"
+  email: "{{ cvmfs_server_meta_email | default('[email protected]') }}"
+  organisation: "{{ cvmfs_server_meta_organisation | default('Your Organisation') }}"
+  custom: "{{ cvmfs_server_meta_custom | default({'_comment': 'Put arbitrary structured data here'}) }}"
+
+cvmfs_repo_meta:
+  administrator: "{{ cvmfs_server_meta_administrator | default('Your Name') }}"
+  email: "{{ cvmfs_server_meta_email | default('[email protected]') }}"
+  organisation: "{{ cvmfs_server_meta_organisation | default('Your Organisation') }}"
+  description: "Repository content"
+  url: "{{ cvmfs_server_meta_website | default('Project website') }}"
+  recommended-stratum0: "stratum 0 url"
+  recommended-stratum1s: ["stratum1 url", "stratum1 url"]
+
+  custom: "{{ cvmfs_server_meta_custom | default({'_comment': 'Put arbitrary structured data here'}) }}"
+...

roles/cvmfs_server_meta_info/tasks/main.yml

@@ -0,0 +1,22 @@
+---
+- name: Create a meta.json containing the CVMFS Server Meta Information
+  ansible.builtin.copy:
+    content: "{{ cvmfs_server_meta | to_nice_json(indent=2, sort_keys=false) }}"
+    dest: "{{ cvmfs_srv_mount }}/cvmfs/info/v1/meta.json"
+    owner: root
+    group: root
+    mode: 0644
+  become: true
+
+- name: Create meta information for each CVMFS repository
+  ansible.builtin.include_tasks: repo_meta_info.yml
+  vars:
+    this_cvmfs_repo: "{{ item }}"
+    this_cvmfs_repo_meta:
+      description: "{{ item.description | default(omit) }}"
+      recommended-stratum0: "http://{{ item.stratum0 }}/cvmfs/{{ item.repository }}"
+      recommended-stratum1s: "{{ eessi_cvmfs_server_urls | selectattr('domain', 'in', item.repository) |
+                                 map(attribute='urls') | map('regex_replace', '@fqrn@', item.repository) }}"
+  with_items: "{{ eessi_cvmfs_repositories }}"
+  when: "'cvmfsstratum0servers' in group_names or cvmfs_role == 'stratum0'"
+...

roles/cvmfs_server_meta_info/tasks/repo_meta_info.yml

@@ -0,0 +1,35 @@
+---
+- name: Create temporary file for storing json
+  ansible.builtin.tempfile:
+    state: file
+    suffix: .json
+  register: tmp_json_file
+
+- name: Add meta information for repository to temporary json file
+  ansible.builtin.copy:
+    content: "{{ cvmfs_repo_meta | combine(this_cvmfs_repo_meta) | to_nice_json(indent=2, sort_keys=false) }}"
+    dest: "{{ tmp_json_file.path }}"
+    mode: 0644
+
+- name: Calculate the checksum of the json file
+  ansible.builtin.stat:
+    path: "{{ tmp_json_file.path }}"
+  register: json_file_stat
+
+- name: Get the current meta information of this repository from the server
+  ansible.builtin.command:
+    cmd: "cvmfs_swissknife info -M -r {{ this_cvmfs_repo_meta['recommended-stratum0'] }}"
+  changed_when: false
+  register: current_repo_meta
+
+- name: Update the repository's meta information
+  ansible.builtin.command:
+    cmd: "cvmfs_server update-repoinfo -f {{ tmp_json_file.path }} {{ this_cvmfs_repo.repository }}"
+  when: (current_repo_meta.stdout | checksum) != json_file_stat.stat.checksum
+  become_user: "{{ cvmfs_repo_owner }}"
+
+- name: Remove temporary json file
+  ansible.builtin.file:
+    path: "{{ tmp_json_file.path }}"
+    state: absent
+...

stratum0.yml

@@ -16,3 +16,5 @@
     - role: geerlingguy.repo-epel
       when: ansible_facts['os_family'] == 'RedHat'
     - galaxyproject.cvmfs
+    - cvmfs_server_meta_info
+...

stratum1.yml

@@ -17,3 +17,5 @@
     - role: geerlingguy.repo-epel
       when: ansible_facts['os_family'] == 'RedHat'
     - galaxyproject.cvmfs
+    - cvmfs_server_meta_info
+...