From 9796ae1a883dcd4dff3d34bdea2d4137edc5368f Mon Sep 17 00:00:00 2001
From: Salt <rehashedsalt@cock.li>
Date: Tue, 14 Jun 2022 14:40:21 -0500
Subject: [PATCH] Refactor Minecraft into its own role again for ease of
 spin-up

---
 playbooks/home_game.yml                       | 33 ++++-------
 roles/docker-minecraft/defaults/main.yml      | 35 +++++++++++
 roles/docker-minecraft/handlers/main.yml      |  7 +++
 roles/docker-minecraft/tasks/main.yml         | 58 +++++++++++++++++++
 .../templates/server.properties               |  4 ++
 5 files changed, 114 insertions(+), 23 deletions(-)
 create mode 100644 roles/docker-minecraft/defaults/main.yml
 create mode 100644 roles/docker-minecraft/handlers/main.yml
 create mode 100644 roles/docker-minecraft/tasks/main.yml
 create mode 100644 roles/docker-minecraft/templates/server.properties

diff --git a/playbooks/home_game.yml b/playbooks/home_game.yml
index fa4f25a..247a5ae 100755
--- a/playbooks/home_game.yml
+++ b/playbooks/home_game.yml
@@ -4,13 +4,17 @@
 ---
 - hosts: vm-minecraft-1.home.mgmt.desu.ltd
   gather_facts: no
-  pre_tasks:
-    - name: include tasks for gameservers
-      include_tasks: tasks/game/{{ item }}
-      with_items:
-        - minecraft-oceanblock.yml
-      tags: [ always ]
   roles:
+    - role: docker-minecraft
+      vars:
+        minecraft_name: oceanblock
+        minecraft_pack_zip: "https://srv.9iron.club/files/packs/1.16.5-oceanblock/latest.zip"
+        minecraft_image: "rehashedsalt/minecraft-forge:1.16.5-master"
+        minecraft_server_properties:
+          allow-flight: "true"
+          difficulty: hard
+          motd: "OCEAN MAN"
+      tags: [ minecraft ]
     - role: backup
       vars:
         backup_s3backup_list_extra:
@@ -21,23 +25,6 @@
           - /data/minecraft/botaniapack2-creative
           - /data/minecraft/oceanblock/backups
       tags: [ backup ]
-- hosts: vm-minecraft-2.home.mgmt.desu.ltd
-  gather_facts: no
-  pre_tasks:
-    - name: include tasks for gameservers
-      include_tasks: tasks/game/{{ item }}
-      with_items:
-        - minecraft-enigmatica6.yml
-      tags: [ always ]
-  roles:
-    - role: backup
-      vars:
-        backup_s3backup_list_extra:
-          - /data
-          - /etc
-        backup_s3backup_exclude_list_extra:
-          - /data/minecraft/enigmatica6/backups
-      tags: [ backup ]
 - hosts: vm-terraria-1.home.mgmt.desu.ltd
   gather_facts: no
   pre_tasks:
diff --git a/roles/docker-minecraft/defaults/main.yml b/roles/docker-minecraft/defaults/main.yml
new file mode 100644
index 0000000..aeab136
--- /dev/null
+++ b/roles/docker-minecraft/defaults/main.yml
@@ -0,0 +1,35 @@
+#!/usr/bin/env ansible-playbook
+# vim:ft=ansible:
+# Overall app settings
+minecraft_name: generic
+#minecraft_pack_zip: "https://example.com/path/to/pack.zip"
+
+# Container settings
+minecraft_uid: 1520
+minecraft_gid: 1520
+minecraft_state: started
+# See the tags for this image for more versions
+minecraft_image: rehashedsalt/minecraft-forge:1.16.5-master
+minecraft_restart_policy: unless-stopped
+minecraft_timezone: "America/Chicago"
+# Container network settings
+minecraft_external_port: "25565"
+minecraft_data_prefix: "/data/minecraft/{{ minecraft_name }}"
+
+# Java settings
+minecraft_jvm_args: "-XX:+UseG1GC -XX:+ParallelRefProcEnabled -XX:MaxGCPauseMillis=200 -XX:+UnlockExperimentalVMOptions -XX:+DisableExplicitGC -XX:+AlwaysPreTouch -XX:G1NewSizePercent=30 -XX:G1MaxNewSizePercent=40 -XX:G1HeapRegionSize=8M -XX:G1ReservePercent=20 -XX:G1HeapWastePercent=5 -XX:G1MixedGCCountTarget=4 -XX:InitiatingHeapOccupancyPercent=15 -XX:G1MixedGCLiveThresholdPercent=90 -XX:G1RSetUpdatingPauseTimePercent=5 -XX:SurvivorRatio=32 -XX:+PerfDisableSharedMem -XX:MaxTenuringThreshold=1"
+minecraft_jvm_extra_args: ""
+minecraft_xmx: "8G"
+minecraft_xms: "4G"
+# server.properties
+minecraft_server_properties:
+  allow-flight: true
+  difficulty: hard
+  gamemode: survival
+  level-name: world
+  level-type: default
+  max-players: 20
+  motd: A Minecraft Server
+  server-port: 25565
+  spawn-protection: 0
+  view-distance: 10
diff --git a/roles/docker-minecraft/handlers/main.yml b/roles/docker-minecraft/handlers/main.yml
new file mode 100644
index 0000000..0ea4e23
--- /dev/null
+++ b/roles/docker-minecraft/handlers/main.yml
@@ -0,0 +1,7 @@
+#!/usr/bin/env ansible-playbook
+# vim:ft=ansible:
+- name: restart minecraft {{ minecraft_name }}
+  docker_container:
+    name: "minecraft-{{ minecraft_name }}"
+    state: started
+    restart: yes
diff --git a/roles/docker-minecraft/tasks/main.yml b/roles/docker-minecraft/tasks/main.yml
new file mode 100644
index 0000000..69f60b8
--- /dev/null
+++ b/roles/docker-minecraft/tasks/main.yml
@@ -0,0 +1,58 @@
+#!/usr/bin/env ansible-playbook
+# vim:ft=ansible:
+---
+- name: assure minecraft {{ minecraft_name }} directory structure
+  file:
+    state: directory
+    owner: "{{ minecraft_uid }}"
+    group: "{{ minecraft_gid }}"
+    mode: "0750"
+    path: "{{ item }}"
+    # We recurse here since these directories *and all of their contents*
+    # should be read-write by the container without exception.
+    recurse: yes
+  with_items:
+    - "{{ minecraft_data_prefix }}/backups"
+    - "{{ minecraft_data_prefix }}/logs"
+    - "{{ minecraft_data_prefix }}/world"
+- name: assure minecraft {{ minecraft_name }} files
+  file:
+    state: touch
+    owner: "{{ minecraft_uid }}"
+    group: "{{ minecraft_gid }}"
+    mode: "0640"
+    path: "{{ item }}"
+  with_items:
+    - "{{ minecraft_data_prefix }}/ops.json"
+    - "{{ minecraft_data_prefix }}/server.properties"
+- name: assure {{ minecraft_name }} server properties
+  lineinfile:
+    state: present
+    regexp: "^{{ item.key }}"
+    line: "{{ item.key }}={{ item.value }}"
+    path: "{{ minecraft_data_prefix }}/server.properties"
+  with_dict: "{{ minecraft_server_properties }}"
+  notify: "restart minecraft {{ minecraft_name }}"
+- name: assure minecraft {{ minecraft_name }} container
+  docker_container:
+    name: "minecraft-{{ minecraft_name }}"
+    state: started
+    image: "{{ minecraft_image }}"
+    restart_policy: "{{ minecraft_restart_policy }}"
+    pull: yes
+    user: "{{ minecraft_uid }}:{{ minecraft_gid }}"
+    env:
+      TZ: "{{ minecraft_timezone }}"
+      ARGS: "{{ minecraft_jvm_args }} {{ minecraft_jvm_extra_args }}"
+      JRE_XMX: "{{ minecraft_xmx }}"
+      JRE_XMS: "{{ minecraft_xms }}"
+      FORGE_PACK_ZIP: "{{ minecraft_pack_zip }}"
+    ports:
+      - "{{ minecraft_external_port }}:25565/tcp"
+      - "{{ minecraft_external_port }}:25565/udp"
+    volumes:
+      - "{{ minecraft_data_prefix }}/backups:/minecraft/backups"
+      - "{{ minecraft_data_prefix }}/logs:/minecraft/logs"
+      - "{{ minecraft_data_prefix }}/ops.json:/minecraft/ops.json"
+      - "{{ minecraft_data_prefix }}/server.properties:/minecraft/server.properties"
+      - "{{ minecraft_data_prefix }}/world:/minecraft/world"
diff --git a/roles/docker-minecraft/templates/server.properties b/roles/docker-minecraft/templates/server.properties
new file mode 100644
index 0000000..130a7b6
--- /dev/null
+++ b/roles/docker-minecraft/templates/server.properties
@@ -0,0 +1,4 @@
+{{ ansible_managed }}
+{% for property in minecraft_server_properties %}
+{{ property.key }}={{ property.value }}
+{% endfor %}