feat: remove hetzner.hcloud ansible dependency (#9)

* feat: remove hetzner.hcloud  ansible dependency

* refactor: rename variable hcloud_image_info to images

README.md

@@ -7,12 +7,10 @@ Ansible role to create and rotate backups and snapshots of servers in Hetzner Cl
 <!-- TOC -->
 
 * [Requirements](#requirements)
-* [Dependencies](#dependencies)
 * [Role Variables](#role-variables)
     * [api_token](#api_token)
 * [Default Variables](#default-variables)
 * [Example Playbook](#example-playbook)
-* [Dependencies](#dependencies)
 * [License](#license)
 * [Author](#author)
 
@@ -22,20 +20,6 @@ Ansible role to create and rotate backups and snapshots of servers in Hetzner Cl
 
 - Ansible 2.15 or later
 
-## Dependencies
-
-This role depends on the following collections and must be installed before using this role:
-
-- [hetzner.hcloud](https://galaxy.ansible.com/ui/repo/published/hetzner/hcloud/)
-
-```bash
-ansible-galaxy collection install hetzner.hcloud
-```
-
-Unfortunately, the ansible dependency system does not allow roles to 
-depend on collections and vice versa even though it has been requested many times.
-Therefore, the collection has to be installed manually.
-
 ## Role Variables
 
 ### api_token

meta/main.yml

@@ -28,7 +28,4 @@ galaxy_info:
       versions:
         - all
 
-#dependencies:
-#  - name: hetzner.hcloud
-#    src: hetzner.hcloud
-#    version: ">=4.0.1"
+dependencies: []

tasks/main.yml

@@ -2,7 +2,7 @@
 - name: Validate variables
   include_tasks: validate.yml
 
-- name: Create {{ backup_type }} for {{ inventory_hostname }}
+- name: Create {{ backup_type }}
   delegate_to: "{{ delegation }}"
   register: response
   uri:
@@ -16,7 +16,7 @@
     status_code: 201
     body_format: json
 
-- name: Wait until {{ backup_type }} is finished for {{ inventory_hostname }} with interval {{ backup_check_delay }}s
+- name: Wait until {{ backup_type }} is finished with interval {{ backup_check_delay }}s
   delegate_to: "{{ delegation }}"
   register: response
   uri:
@@ -31,6 +31,6 @@
   retries: "{{ backup_check_retries }}"
   delay: "{{ backup_check_delay }}"
 
-- name: Rotate snapshots for {{ inventory_hostname }}
+- name: Rotate snapshots
   when: backup_type == "snapshot" and rotate_snapshots == true
   include_tasks: rotate-snapshots.yml

tasks/rotate-snapshots.yml

@@ -1,20 +1,47 @@
 ---
-- name: 'Gather all snapshots with labels: "{{ label_selector }}"'
+- name: Prepare label selector filter
+  set_fact:
+    label_selector_string: "{{ label_selector | items | map('join', '=') | join(',') }}"
+
+- name: Get number of pages for snapshots that match the label selector
   delegate_to: "{{ delegation }}"
   register: response
-  hetzner.hcloud.hcloud_image_info:
-    api_token: "{{ api_token }}"
-    type: snapshot
-    label_selector: "{{ label_selector | items | map('join', '=') | join(',') }}"
-  failed_when: response.hcloud_image_info | length == 0
+  uri:
+    url: "https://api.hetzner.cloud/v1/images?type=snapshot&per_page=50&status=available&label_selector={{ label_selector_string }}"
+    method: GET
+    status_code: 200
+    headers:
+      Authorization: "Bearer {{ api_token }}"
 
-- name: Gather snapshots to delete for {{ inventory_hostname }}
+- name: Gather all snapshots that match the label selector
   delegate_to: "{{ delegation }}"
+  register: response
+  uri:
+    url: "https://api.hetzner.cloud/v1/images?type=snapshot&per_page=50&status=available&label_selector={{ label_selector_string }}&page={{ item }}"
+    method: GET
+    status_code: 200
+    headers:
+      Authorization: "Bearer {{ api_token }}"
+  loop: "{{ range(1, response.json.meta.pagination.last_page + 1) | list }}"
+
+- name: "Prepare list of snapshots"
   set_fact:
-    delete_list: "{{ response.hcloud_image_info[0:response.hcloud_image_info | length - keep_snapshots | int] }}"
-  when: response.hcloud_image_info | length - keep_snapshots | int > 0
+    # workaround for selecting only snapshots created from the current host because label_selector has some problems:
+    # selectattr('created_from.name', 'equalto', inventory_hostname)
+    images: "{{ response.results | map(attribute='json.images') | flatten | selectattr('created_from.name', 'equalto', inventory_hostname) }}"
+
+- name: Gather snapshots to delete
+  delegate_to: "{{ delegation }}"
+  set_fact:
+    delete_list: "{{ images[0:images | length - keep_snapshots | int] }}"
+  when: images | length - keep_snapshots | int > 0
+
+- name: Show number of snapshots to delete
+  debug:
+    msg: "{{ delete_list | length }} of {{ images | length }} snapshots will be deleted"
+  when: delete_list | length > 0
 
-- name: 'Delete {{ delete_list | length }} old snapshots for {{ inventory_hostname }}'
+- name: "Delete old snapshots"
   delegate_to: "{{ delegation }}"
   when: delete_list | length > 0
   loop: "{{ delete_list }}"

tasks/validate.yml

@@ -87,15 +87,20 @@
   block:
     - name: Get server details
       delegate_to: "{{ delegation }}"
-      register: server
-      hetzner.hcloud.server_info:
-        api_token: "{{ api_token }}"
-        name: "{{ inventory_hostname }}"
+      register: response
+      uri:
+        url: "https://api.hetzner.cloud/v1/servers?name={{ inventory_hostname }}"
+        method: GET
+        status_code: 200
+        headers:
+          Authorization: "Bearer {{ api_token }}"
+      failed_when:
+        - response.json.servers | length == 0
 
     - name: Check if backups are enabled
       delegate_to: "{{ delegation }}"
       assert:
         quiet: yes
         that:
-          - server.hcloud_server_info[0].backup_window not in [None, ""]
+          - response.json.servers.0.backup_window not in [None, ""]
         fail_msg: "Backups are not enabled on this server."