From 78f4ce9ee53e940803f2fb657cf1eb0a9bb2a239 Mon Sep 17 00:00:00 2001
From: Ryan Cavicchioni <ryan@cavi.cc>
Date: Sat, 5 Oct 2019 16:41:47 -0500
Subject: [PATCH] Add Minecraft server role

---
 roles/minecraft/defaults/main.yaml            |  15 +++
 roles/minecraft/handlers/main.yaml            |  11 ++
 roles/minecraft/tasks/main.yaml               | 104 ++++++++++++++++++
 .../minecraft/templates/minecraft.service.j2  |  17 +++
 .../minecraft/templates/server.properties.j2  |   2 +
 5 files changed, 149 insertions(+)
 create mode 100644 roles/minecraft/defaults/main.yaml
 create mode 100644 roles/minecraft/handlers/main.yaml
 create mode 100644 roles/minecraft/tasks/main.yaml
 create mode 100644 roles/minecraft/templates/minecraft.service.j2
 create mode 100644 roles/minecraft/templates/server.properties.j2

diff --git a/roles/minecraft/defaults/main.yaml b/roles/minecraft/defaults/main.yaml
new file mode 100644
index 0000000..55b72f6
--- /dev/null
+++ b/roles/minecraft/defaults/main.yaml
@@ -0,0 +1,15 @@
+---
+minecraft_java_package_name: openjdk-8-jre-headless
+minecraft_java_package_state: present
+
+minecraft_service_name: minecraft.service
+minecraft_service_state: started
+minecraft_service_enabled: yes
+
+minecraft_user: minecraft
+minecraft_group: minecraft
+
+minecraft_jar_url: https://launcher.mojang.com/v1/objects/3dc3d84a581f14691199cf6831b71ed1296a9fdf/server.jar
+
+minecraft_opt_path: /opt/minecraft
+minecraft_var_path: "{{ minecraft_opt_path }}/var"
diff --git a/roles/minecraft/handlers/main.yaml b/roles/minecraft/handlers/main.yaml
new file mode 100644
index 0000000..38c2de9
--- /dev/null
+++ b/roles/minecraft/handlers/main.yaml
@@ -0,0 +1,11 @@
+---
+- name: minecraft daemon-reload
+  systemd:
+    name: "{{ minecraft_service_name }}"
+    daemon_reload: yes
+    state: restarted
+
+- name: restart minecraft
+  service:
+    name: "{{ minecraft_service_name }}"
+    state: restarted
diff --git a/roles/minecraft/tasks/main.yaml b/roles/minecraft/tasks/main.yaml
new file mode 100644
index 0000000..5d8a22a
--- /dev/null
+++ b/roles/minecraft/tasks/main.yaml
@@ -0,0 +1,104 @@
+---
+- name: create minecraft group
+  group:
+    name: "{{ minecraft_group }}"
+    gid: "{{ minecraft_group_gid | default(omit) }}"
+    state: "{{ minecraft_group_state | default('present') }}"
+    system: yes
+
+- name: create minecraft user
+  user:
+    name: "{{ minecraft_user }}"
+    uid: "{{ minecraft_user_uid | default(omit) }}"
+    group: "{{ minecraft_group }}"
+    home: "{{ minecraft_var_path }}"
+    create_home: no
+    shell: "{{ minecraft_shell | default('/usr/sbin/nologin') }}"
+    state: "{{ minecraft_user_state | default('present') }}"
+    system: yes
+  
+- name: install java
+  package:
+    name: "{{ minecraft_java_package_name }}"
+    state: "{{ minecraft_java_package_state }}"
+
+- name: create minecraft installation directory
+  file:
+    path: "{{ item }}"
+    state: directory
+    owner: root
+    group: root
+    mode: "0755"
+  with_items:
+    - "{{ minecraft_opt_path }}"
+    - "{{ minecraft_opt_path }}/bin"
+    - "{{ minecraft_opt_path }}/etc"
+
+- name: create minecraft var directory
+  file:
+    path: "{{ item }}"
+    state: directory
+    owner: "{{ minecraft_user }}"
+    group: "{{ minecraft_group }}"
+    mode: "0755"
+  with_items:
+    - "{{ minecraft_var_path }}"
+
+- name: download minecraft server
+  get_url:
+    url: "{{ minecraft_jar_url }}"
+    dest: "{{ minecraft_opt_path }}/bin/server.jar"
+    owner: "{{ minecraft_user }}"
+    group: "{{ minecraft_group }}"
+    mode: "0644"
+
+- name: agree to the eula
+  copy:
+    content: "eula=true"
+    dest: "{{ minecraft_var_path }}/eula.txt"
+    owner: "{{ minecraft_user }}"
+    group: "{{ minecraft_group }}"
+    mode: "0644"
+
+- name: configure minecraft
+  template:
+    src: server.properties.j2
+    dest: "{{ minecraft_var_path }}/server.properties"
+    owner: root
+    group: root
+    mode: 0644
+  notify: restart minecraft
+
+- name: configure systemd unit
+  template:
+    src: minecraft.service.j2
+    dest: /etc/systemd/system/minecraft.service
+    owner: root
+    group: root
+    mode: 0644
+    #validate: systemd-analyze verify %s
+  notify: minecraft daemon-reload
+
+- name: manage minecraft service
+  service:
+    name: "{{ minecraft_service_name }}"
+    state: "{{ minecraft_service_state }}"
+    enabled: "{{ minecraft_service_enabled }}"
+
+- name: configure ops
+  copy:
+    content: "{{ (minecraft_ops | default([])) | to_nice_json }}"
+    dest: "{{ minecraft_var_path }}/ops.json"
+    owner: "{{ minecraft_user }}"
+    group: "{{ minecraft_group }}"
+    mode: "0644"
+  notify: restart minecraft
+
+- name: configure whitelist
+  copy:
+    content: "{{ (minecraft_whitelist | default([])) | to_nice_json }}"
+    dest: "{{ minecraft_var_path }}/whitelist.json"
+    owner: "{{ minecraft_user }}"
+    group: "{{ minecraft_group }}"
+    mode: "0644"
+  notify: restart minecraft
diff --git a/roles/minecraft/templates/minecraft.service.j2 b/roles/minecraft/templates/minecraft.service.j2
new file mode 100644
index 0000000..94b959e
--- /dev/null
+++ b/roles/minecraft/templates/minecraft.service.j2
@@ -0,0 +1,17 @@
+# {{ ansible_managed }}
+
+[Unit]
+Description=Minecraft server
+After=network.target
+
+[Service]
+ExecStart=/usr/bin/java -Xmx{{ minecraft_java_xmx | default('1024M') }} -Xms{{ minecraft_java_xms | default('1024M') }} -jar {{ minecraft_opt_path }}/bin/server.jar --nogui
+Type=simple
+User={{ minecraft_user }}
+Group={{ minecraft_group }}
+WorkingDirectory={{ minecraft_var_path }}
+Restart=on-failure
+SyslogIdentifier=minecraft
+
+[Install]
+WantedBy=multi-user.target
diff --git a/roles/minecraft/templates/server.properties.j2 b/roles/minecraft/templates/server.properties.j2
new file mode 100644
index 0000000..c8b9f4f
--- /dev/null
+++ b/roles/minecraft/templates/server.properties.j2
@@ -0,0 +1,2 @@
+white-list: {{ (minecraft_config.whitelist | default(true)) | ternary('true', 'false') }}
+enforce-whitelist: {{ (minecaft_config.enfoce_whitelist | default(true)) | ternary('true', 'false') }}