Add conga_maven_vault_password_file configuration variable with sensi…

…ble default (#7)

* Add a conga_maven_vault_password_file variable which defaults to the file configured for Ansible itself. This allows using the various Ansible configuration facilities for setting the password file (e.g. ansible.cfg) instead of being forced to set the ANSIBLE_VAULT_PASSWORD_FILE environment variable.
* Only include extra Maven command line arguments if they have a non-empty value to allow omitting them by setting them to empty.
* Bump the required Ansible version to 2.5 due to config lookup plugin usage

.travis.yml

@@ -6,7 +6,7 @@ env:
   # run against latest version
   - ANSIBLE_VERSION=latest
   # run against minimal required version
-  - ANSIBLE_VERSION=2.0.*
+  - ANSIBLE_VERSION=2.5.*
 
 # Use the new container infrastructure
 sudo: false

README.md

@@ -45,6 +45,8 @@ If you want to use a Git configuration repository, you need to at least set the
     conga_maven_opts: "-B -U -Dconga.environments={{ conga_environment }}"
     # Path of a custom settings file to use when running Maven
     conga_maven_settings: ~/.m2/settings.xml
+    # Path to the Vault password file, defaults to Ansible configuration
+    conga_maven_vault_password_file: "{{ lookup('config', 'DEFAULT_VAULT_PASSWORD_FILE') }}"
 
 These variables let you customize the way Maven is executed, e.g. supplying a full path for the Maven executable or supplying a custom settings file.
 

defaults/main.yml

@@ -8,6 +8,8 @@
 conga_maven_root: configuration
 # Maven command to execute
 conga_maven_cmd: mvn
+# Path to the Vault password file, defaults to Ansible configuration
+conga_maven_vault_password_file: "{{ lookup('config', 'DEFAULT_VAULT_PASSWORD_FILE') }}"
 # Maven options (run in batch mode, update snapshots and only compile a single environment)
 conga_maven_opts: "-B -U -Dconga.environments={{ conga_environment }}"
 # Path of a custom settings file to use when running Maven

meta/main.yml

@@ -5,7 +5,7 @@ galaxy_info:
   company: pro!vision
   issue_tracker_url: https://wcm-io.atlassian.net
   license: Apache
-  min_ansible_version: 2.0
+  min_ansible_version: 2.5
 
   platforms:
   - name: Ubuntu

tasks/main.yml

@@ -29,7 +29,12 @@
 - name: Add custom Maven settings.
   set_fact:
     _mvn_cmdline: "{{ _mvn_cmdline }} --settings={{ conga_maven_settings }}"
-  when: conga_maven_settings is defined
+  when: conga_maven_settings is defined and conga_maven_settings
+
+- name: Add Maven Vault password file.
+  set_fact:
+    _mvn_cmdline: "{{ _mvn_cmdline }} -Dansible.vault.password.file={{ conga_maven_vault_password_file }}"
+  when: conga_maven_vault_password_file is defined and conga_maven_vault_password_file
 
 - name: Compile CONGA configuration with Maven.
   shell: "{{ _mvn_cmdline }}"