Add tasks to verify install/upgrade state and apply as neccesary

tasks/common.yml

@@ -1,12 +1,51 @@
 ---
+- name: checking if splunk is installed
+  tags: install
+  stat:
+    path: "{{ splunk_home }}"
+  register: splunk_path
+
+- name: is splunk installed?
+  tags: install
+  debug: msg='splunk is already installed under /opt/splunk'
+  when: splunk_path.stat.exists
+
+- name: Check if Splunk is already upgraded?
+  stat:
+    path: /opt/splunk/{{ splunk_manifest }}
+  register: splunk_mani
+  when: splunk_path.stat.exists
+
+- name: Splunk upgraded
+  debug:
+    msg: Splunk Manifest is already installed!
+  when: splunk_mani.stat.exists
+
+- name: copy splunk binary
+  tags:
+   - install
+  copy:
+    src: "{{ splunk_archive }}"
+    dest: /tmp/splunk
+    owner: root
+    group: root
+    mode: 775
+  when: splunk_path.stat.exists and not splunk_mani.stat.exists
+
+
 - name: Stop Splunk
   command: /opt/splunk/bin/splunk stop
   become_user: splunk
+  when: splunk_path.stat.exists and not splunk_mani.stat.exists
 
-- name: Upgrade Splunk
+- name: install splunk binary
+  tags:
+   - install
   unarchive:
-    src: "{{ splunk_archive }}"
+    src: "/tmp/splunk/{{ splunk_archive }}"
-    dest: /opt/splunk
+    dest: /opt/
-    owner: splunk
+    owner: "{{ splunk_user }}"
-    group: splunk
+    group: "{{ splunk_user }}"
+    remote_src: true
   notify: Start Splunk (No Warning)
+  when: splunk_path.stat.exists and not splunk_mani.stat.exists