feat(linkding): Add linkding stack

Bookmarking software similar to shaarli but a bit more featureful. And
not written in php, thankfully.

roles/linkding/defaults/main.yml

@@ -0,0 +1,19 @@
+---
+linkding_version: latest-plus # plus contains self-archiving possibilities with singlefile
+
+linkding_upstream_file_dir: "{{ docker_stack_files_dir }}/{{ stack_name }}"
+
+linkding_use_https: true
+
+linkding_autoupdate: true
+
+# the subdomain link linkding will be reachable under
+subdomain_alias: ld
+
+# initial superuser creation
+linkding_username: linkdinger
+linkding_password: linkdingerpass123
+
+# should we back up the data?
+linkding_backup_enable: true
+linkding_backup_cron: 0 45 3 * * *

roles/linkding/handlers/main.yml

@@ -0,0 +1,52 @@
+## Register reverse proxy
+- name: Ensure upstream directory exists
+  ansible.builtin.file:
+    path: "{{ linkding_upstream_file_dir }}"
+    state: directory
+    mode: "0755"
+  become: true
+  listen: "update linkding upstream"
+
+- name: Update upstream template
+  ansible.builtin.template:
+    src: upstream.json.j2
+    dest: "{{ linkding_upstream_file_dir }}/upstream.json"
+  become: true
+  listen: "update linkding upstream"
+
+# figure out if upstream id exists
+- name: check {{ stack_name }} upstream
+  community.docker.docker_container_exec:
+    container: "{{ caddy_container_id }}"
+    command: >
+      curl localhost:2019/id/{{ stack_name }}_upstream/
+  changed_when: False
+  register: result
+  become: true
+  listen: "update linkding upstream"
+
+# upstream already exists, patch it
+- name: remove old {{ stack_name }} upstream
+  community.docker.docker_container_exec:
+    container: "{{ caddy_container_id }}"
+    command: >
+      curl -X DELETE localhost:2019/id/{{ stack_name }}_upstream/
+  become: true
+  when: (result.stdout | from_json)['error'] is not defined
+  listen: "update linkding upstream"
+
+# upstream has to be created
+- name: add {{ stack_name }} upstream
+  community.docker.docker_container_exec:
+    container: "{{ caddy_container_id }}"
+    command: >
+      curl -X POST -H "Content-Type: application/json" -d @{{ linkding_upstream_file_dir }}/upstream.json localhost:2019/config/apps/http/servers/{{ (linkding_use_https == True) | ternary(caddy_https_server_name, caddy_http_server_name) }}/routes/0/
+  become: true
+  listen: "update linkding upstream"
+
+- name: Ensure upstream directory is gone again
+  ansible.builtin.file:
+    path: "{{ linkding_upstream_file_dir }}"
+    state: absent
+  become: true
+  listen: "update linkding upstream"

roles/linkding/meta/main.yml

@@ -0,0 +1,11 @@
+---
+galaxy_info:
+  author: Marty Oehme
+  description: Installs linkding as a docker stack service
+  license: GPL-3.0-only
+  min_ansible_version: "2.9"
+  galaxy_tags: []
+
+dependencies:
+  - docker-swarm
+  - caddy_id

roles/linkding/tasks/main.yml

@@ -0,0 +1,23 @@
+---
+## install linkding container
+- name: Check upstream status
+  community.docker.docker_container_exec:
+    container: "{{ caddy_container_id }}"
+    command: >
+      curl localhost:2019/id/{{ stack_name }}_upstream/
+  register: result
+  changed_when: (result.stdout | from_json) != (lookup('template', 'upstream.json.j2') | from_yaml)
+  become: true
+  notify: "update linkding upstream"
+
+- name: Deploy linkding to swarm
+  community.general.docker_stack:
+    name: "{{ stack_name }}"
+    state: present
+    prune: yes
+    compose:
+      - "{{ stack_compose }}"
+  become: true
+  tags:
+    - docker-swarm
+  notify: "update linkding upstream"

roles/linkding/templates/docker-stack.yml.j2

@@ -0,0 +1,46 @@
+services:
+  app:
+    image: "{{ stack_image }}:{{ linkding_version }}"
+    healthcheck:
+      test: ["CMD", "curl", "--fail", "http://127.0.0.1:9090/health"]
+      interval: 1m
+      timeout: 10s
+      retries: 3
+      start_period: 1m
+    networks:
+      - "{{ docker_swarm_public_network_name }}"
+    volumes:
+    - data:/etc/linkding/data
+    environment:
+      - "LD_SUPERUSER_NAME={{ linkding_username }}"
+      - "LD_SUPERUSER_PASSWORD={{ linkding_password }}"
+{% if linkding_autoupdate is defined and linkding_autoupdate %}
+    deploy:
+      labels:
+        - shepherd.autoupdate=true
+{% endif %}
+
+{% if backup_enable is not undefined and not false and linkding_backup_enable is not undefined and not false %}
+  backup:
+    image: mazzolino/restic
+    environment:
+      - "TZ={{ restic_timezone }}"
+       # go-cron starts w seconds
+      - "BACKUP_CRON={{ linkding_backup_cron }}"
+      - "RESTIC_REPOSITORY={{ restic_repo }}"
+      - "AWS_ACCESS_KEY_ID={{ restic_s3_key }}"
+      - "AWS_SECRET_ACCESS_KEY={{ restic_s3_secret }}"
+      - "RESTIC_PASSWORD={{ restic_pass }}"
+      - "RESTIC_BACKUP_TAGS=linkding"
+      - "RESTIC_BACKUP_SOURCES=/volumes"
+    volumes:
+      - data:/volumes/linkding_data:ro
+{% endif %}
+
+volumes:
+  data:
+
+networks:
+  "{{ docker_swarm_public_network_name }}":
+    external: true
+

roles/linkding/templates/upstream.json.j2

@@ -0,0 +1,38 @@
+{
+    "@id": "{{ stack_name }}_upstream",
+{% if server_domain is not undefined and not none %}   
+    "match": [
+        {
+            "host": [
+{% if subdomain_alias is not undefined and not none %}
+                "{{ subdomain_alias }}.{{ server_domain }}"
+{% else %}
+                "{{ stack_name }}.{{ server_domain }}"
+{% endif %}
+            ]
+        }
+    ],
+{% else %}
+    "match": [
+        {
+            "path": [
+{% if subdomain_alias is not undefined and not none %}
+                "/{{ subdomain_alias }}*"
+{% else %}
+                "/{{ stack_name }}*"
+{% endif %}
+            ]
+        }
+    ],
+{% endif %}
+    "handle": [
+        {
+            "handler": "reverse_proxy",
+            "upstreams": [
+                {
+                    "dial": "{{ stack_name }}_app:80"
+                }
+            ]
+        }
+    ]
+}

roles/linkding/vars/main.yml

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+---
+stack_name: linkding
+
+stack_image: "sissbruecker/linkding"
+
+stack_compose: "{{ lookup('template', 'docker-stack.yml.j2') | from_yaml }}"

site.yml

@@ -76,6 +76,11 @@
         role: shaarli
       tags: shaarli
 
+    - name: Install linkding
+      import_role:
+        role: linkding
+      tags: linkding
+
     - name: Install landingpage
       import_role:
         role: landingpage