Inplemented first version of a updating mechanism.

README.md:		Documented new variable and requirement.
defaults/main.yml:	Changed symlink to "current"
handlers/main.yml:	"reload systemd" -> "Reload systemd"
			Added pruning of old TS3Server versions.
tasks/main.yml:	Added version number of TS3Server in names.
			Added tasks to perform updating.
			Changed symlink path.
			Changed task name for service file slightly.
templates/teamspeak3-server.service.j2: updated to use the new symlink path.

5 files changed, 51 insertions, 24 deletions

diff --git a/README.md b/README.md
index 3d60063..60a2a77 100644
--- a/README.md
+++ b/README.md
@@ -18,8 +18,9 @@ defaults/main.yml:
 * teamspeak.comment: User comment field. Defaults to "Teamspeak 3 user".
 * teamspeak.home: Home directory for the teamspeak user. Will also be used to install the teamspeak server in. Defaults to "/opt/teamspeak".
 * teamspeak.shell: Shell for the teamspeak user. Defaults to "/usr/sbin/nologin".
+* teamspeak.symlink: Name of symlink to point to current TeamSpeak 3 server directory. Defaults to "current".
 * teamspeak.version: Version of Teamspeak 3 Server to install. Defaults to "3.0.12.4".
-* teamspeak.checksum: "sha256:6bb0e8c8974fa5739b90e1806687128342b3ab36510944f576942e67df7a1bd9"
+* teamspeak.checksum: SHA256 checksum of archive of TeamSpeak 3 server version for verification purposes. Example: "sha256:6bb0e8c8974fa5739b90e1806687128342b3ab36510944f576942e67df7a1bd9"
 
 vars/{debian,redhat}.yml:
 
@@ -28,7 +29,7 @@ vars/{debian,redhat}.yml:
 Dependencies
 ------------
 
-No other dependencies I am aware of.
+rsync should be installed on the host to perform TeamSpeak 3 Server upgrades, used by the "synchronize" module.
 
 Example Playbook
 ----------------
diff --git a/defaults/main.yml b/defaults/main.yml
index e374749..be63f8a 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -6,6 +6,6 @@ teamspeak:
   comment: "Teamspeak 3 user"
   home: "/opt/teamspeak"
   shell: "/usr/sbin/nologin"
-  symlink: "teamspeak3-server"
+  symlink: "current"
   version: "3.0.12.4"
   checksum: "sha256:6bb0e8c8974fa5739b90e1806687128342b3ab36510944f576942e67df7a1bd9"
diff --git a/handlers/main.yml b/handlers/main.yml
index 41d0044..154a161 100644
--- a/handlers/main.yml
+++ b/handlers/main.yml
@@ -1,5 +1,8 @@
 ---
 # handlers file for teamspeak
 
-- name: reload systemd
+- name: Reload systemd
   command: systemctl daemon-reload
+
+- name: Prune older TeamSpeak 3 server versions
+  shell: "find {{ teamspeak.home }}/teamspeak3-server_linux_amd64-*/ -maxdepth 1 -iname 'teamspeak3-server_linux_amd64' -type d | head -n-2 | xargs rm -rf"
diff --git a/tasks/main.yml b/tasks/main.yml
index f23906b..cdbd25a 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -24,7 +24,7 @@
   tags:
     - teamspeak
 
-- name: Download TeamSpeak 3 server files
+- name: Download TeamSpeak {{ teamspeak.version }} server files
   get_url:
     url: "http://dl.4players.de/ts/releases/{{ teamspeak.version }}/teamspeak3-server_linux_amd64-{{ teamspeak.version }}.tar.bz2"
     dest: "{{ teamspeak.home }}/teamspeak3-server_linux_amd64-{{ teamspeak.version }}.tar.bz2"
@@ -34,37 +34,60 @@
   tags:
     - teamspeak
 
-- name: Create TeamSpeak 3 server directory
+- name: Create TeamSpeak {{ teamspeak.version }} server directory
   file:
     path: "{{ teamspeak.home}}/teamspeak3-server_linux_amd64-{{ teamspeak.version }}"
     state: directory
     owner: "{{ teamspeak.user }}"
     group: "{{ teamspeak.user }}"
+  register: mkdir
   tags:
     - teamspeak
 
-- name: Extract TeamSpeak 3 server files
+# If a new directory has been created, check for (current) user data.
+- name: Checking for a currently installed TeamSpeak 3 server with user data
+  stat:
+    path: "{{ teamspeak.home }}/{{ teamspeak.symlink }}/teamspeak3-server_linux_amd64/files"
+  register: userdata
+  when: mkdir.changed
+  tags:
+    - teamspeak
+
+# If user data has been found, this is an upgrade situation.
+# Stop, copy current and extract newer on top.
+- name: Stop currently running TeamSpeak 3 server instance
+  service:
+    name: teamspeak3-server
+    state: stopped
+  when: userdata.stat.exists is defined and userdata.stat.exists == True
+  tags:
+    - teamspeak
+
+- name: Copy existing TeamSpeak 3 server data to new TeamSpeak {{ teamspeak.version }} server directory
+  synchronize:
+    src: "{{ teamspeak.home }}/{{ teamspeak.symlink }}/teamspeak3-server_linux_amd64/"
+    dest: "{{ teamspeak.home }}/teamspeak3-server_linux_amd64-{{ teamspeak.version }}/teamspeak3-server_linux_amd64/"
+  delegate_to: "{{ inventory_hostname }}"
+  when: userdata.stat.exists is defined and userdata.stat.exists == True
+  notify:
+    - Prune older TeamSpeak 3 server versions
+  tags:
+    - teamspeak
+
+- name: Extract TeamSpeak {{ teamspeak.version }} server files
   unarchive:
     copy: no
     src: "{{ teamspeak.home }}/teamspeak3-server_linux_amd64-{{ teamspeak.version }}.tar.bz2"
     dest: "{{ teamspeak.home }}/teamspeak3-server_linux_amd64-{{ teamspeak.version }}/"
-    creates: "{{ teamspeak.home }}/teamspeak3-server_linux_amd64-{{ teamspeak.version }}/teamspeak3-server_linux_amd64"
     owner: "{{ teamspeak.user }}"
     group: "{{ teamspeak.user }}"
+  when: mkdir.changed
   tags:
     - teamspeak
 
-# Updater idea
-# 1. Check if user files exist under symlinked directory.
-# 2.   true? Copy user files to directory of new TeamSpeak3 server version.
-# 3. Stop currently running TeamSpeak 3 Server (under symlinked directory).
-# 4. Create/Update symlink
-# 5.   notify systemd of the update
-# 6. Start new TeamSpeak 3 server
-
-- name: Create/Update symlink to TeamSpeak 3 server {{ teamspeak.version }}
+- name: Create/Update symlink to TeamSpeak {{ teamspeak.version }} server
   file:
-    src: "{{ teamspeak.home }}/teamspeak3-server_linux_amd64-{{ teamspeak.version }}/teamspeak3-server_linux_amd64"
+    src: "{{ teamspeak.home }}/teamspeak3-server_linux_amd64-{{ teamspeak.version }}"
     dest: "{{ teamspeak.home }}/{{ teamspeak.symlink }}"
     state: link
     owner: "{{ teamspeak.user }}"
@@ -72,7 +95,7 @@
   tags:
     - teamspeak
 
-- name: Add TeamSpeak 3 systemctl service file
+- name: Install TeamSpeak 3 systemctl service file
   template:
     src: teamspeak3-server.service.j2
     dest: "{{ systemd_service_file_path }}/teamspeak3-server.service"
@@ -80,11 +103,11 @@
     owner: root
     group: root
   notify:
-    - reload systemd
+    - Reload systemd
   tags:
     - teamspeak
 
-# Perform the "reload systemd" handler now.
+# Perform the "Reload systemd" (and possibly queued clean-up) handler now.
 # Before we start using the new/changed .service file.
 - meta: flush_handlers
   tags:
diff --git a/templates/teamspeak3-server.service.j2 b/templates/teamspeak3-server.service.j2
index 78d7c67..4579694 100644
--- a/templates/teamspeak3-server.service.j2
+++ b/templates/teamspeak3-server.service.j2
@@ -6,9 +6,9 @@ After=network.target
 Type=simple
 User={{ teamspeak.user }}
 Group={{ teamspeak.user }}
-WorkingDirectory={{ teamspeak.home }}/{{ teamspeak.symlink }}
-Environment='LD_LIBRARY_PATH="{{ teamspeak.home }}/{{ teamspeak.symlink }}:$LD_LIBRARY_PATH"'
-ExecStart={{ teamspeak.home }}/{{ teamspeak.symlink }}/ts3server_minimal_runscript.sh
+WorkingDirectory={{ teamspeak.home }}/{{ teamspeak.symlink }}/teamspeak3-server_linux_amd64
+Environment='LD_LIBRARY_PATH="{{ teamspeak.home }}/{{ teamspeak.symlink }}/teamspeak3-server_linux_amd64/:$LD_LIBRARY_PATH"'
+ExecStart={{ teamspeak.home }}/{{ teamspeak.symlink }}/teamspeak3-server_linux_amd64/ts3server_minimal_runscript.sh
 
 [Install]
 WantedBy=multi-user.target