Merge pull request #31 from arruzk/version

Specify a particular version of clickhouse

Author: AlexeySetevoi

README.md

@@ -6,6 +6,10 @@ Any issues and pr are welcome.
 
 Role Variables
 --------------
+F: You can specify a particular version (or `*` for the latest). Please note that downgrade isn't supported.
+```yaml
+clickhouse_version: "19.11.3.11"
+```
 
 F: You can manage listen ports
 ```yaml

defaults/main.yml

@@ -1,6 +1,8 @@
 ---
 # defaults file for clickhouse
 
+clickhouse_version: "*"
+
 #Flag for using with requirements check
 clickhouse_supported: no
 #Type of installation (package,source)

tasks/install_apt.yml

@@ -22,7 +22,8 @@
 
 - name: Install by APT | Package installation
   apt:
-    name: "{{ item }}"
-    state: latest
+    name: "{{ item }}={{ clickhouse_version }}"
+    state: present
+    force: yes
   with_items: "{{ clickhouse_package }}"
-  become: true
+  become: true

tasks/main.yml

@@ -13,7 +13,7 @@
   debug: var=clickhouse_rt_isinstalled.rc
 
 - include: install_apt.yml
-  when: ansible_pkg_mgr == 'apt' and clickhouse_setup == 'package' and clickhouse_rt_isinstalled.rc !=0 and clickhouse_remove|bool == False
+  when: ansible_pkg_mgr == 'apt' and clickhouse_setup == 'package' and (clickhouse_rt_isinstalled.rc !=0 or not clickhouse_is_required_version) and clickhouse_remove|bool == False
   tags: [install]
 
 - include: remove_apt.yml

tasks/precheck.yml

@@ -16,3 +16,15 @@
   when: ansible_pkg_mgr == 'apt' and clickhouse_setup == 'package'
   changed_when: False
   check_mode: no
+
+- name: Requirements check | Check if Clickhouse is installed and has required version
+  shell: dpkg-query --showformat='${Version}' --show "{{ item }}"
+  register: clickhouse_rt_versions_tmp
+  ignore_errors: yes
+  changed_when: False
+  check_mode: no
+  with_items: "{{ clickhouse_package }}"
+- set_fact:
+    clickhouse_rt_versions: "{{ clickhouse_rt_versions_tmp['results'] | map(attribute='stdout') | list }}"
+- set_fact:
+    clickhouse_is_required_version: "{{ clickhouse_version == '*' or (clickhouse_rt_versions | unique | count == 1 and clickhouse_rt_versions[0] == clickhouse_version) }}"