Address Ansible bare variable usage

When executing the role with Ansible 2.1, the following
deprecation warning is issued in the output for some tasks.

[DEPRECATION WARNING]: Using bare variables is deprecated.

This patch addresses the tasks to fix the behaviour appropriately.

Also removed a single usage of with_items that contained one item
in favor of a simple non-looping task.

Change-Id: Ief1a53bb0804dfdbd742bfe919438d80428287da

handlers/main.yml

@@ -19,7 +19,7 @@
     state: "restarted"
     pattern: "{{ item }}"
   register: service_restart
-  with_items: swift_account_program_names
+  with_items: "{{ swift_account_program_names }}"
   failed_when: false
 
 - name: Restart swift container services
@@ -28,7 +28,7 @@
     state: "restarted"
     pattern: "{{ item }}"
   register: service_restart
-  with_items: swift_container_program_names
+  with_items: "{{ swift_container_program_names }}"
   failed_when: false
 
 - name: Restart swift object services
@@ -37,7 +37,7 @@
     state: "restarted"
     pattern: "{{ item }}"
   register: service_restart
-  with_items: swift_object_program_names
+  with_items: "{{ swift_object_program_names }}"
   failed_when: false
 
 - name: Restart swift proxy services
@@ -46,7 +46,7 @@
     state: "restarted"
     pattern: "{{ item }}"
   register: service_restart
-  with_items: swift_proxy_program_names
+  with_items: "{{ swift_proxy_program_names }}"
   failed_when: false
 
 - name: Restart service

tasks/install-apt.yml

@@ -38,7 +38,7 @@
   until: install_packages|success
   retries: 5
   delay: 2
-  with_items: swift_apt_packages
+  with_items: "{{ swift_apt_packages }}"
   tags:
     - swift-install
     - swift-apt-packages

tasks/main.yml

@@ -56,6 +56,15 @@
   tags:
     - swift-setup
 
+# We need swift_vars to exist for the "swift_vars.drives is defined check" to work
+- name: "Set swift_vars if undefined"
+  set_fact:
+    swift_vars: "{}"
+  when: swift_vars is not defined
+  tags:
+    - swift-storage-hosts
+    - swift-setup
+
 - include: swift_storage_hosts.yml
   when:
     - inventory_hostname in groups['swift_hosts']
@@ -69,7 +78,7 @@
     - inventory_hostname in groups['swift_proxy']
     - swift_do_setup | bool
   tags:
-    - swift-storage-hosts
+    - swift-proxy-hosts
     - swift-setup
 
 - include: swift_service_setup.yml

tasks/swift_install.yml

@@ -72,7 +72,7 @@
   until: install_packages|success
   retries: 5
   delay: 2
-  with_items: swift_requires_pip_packages
+  with_items: "{{ swift_requires_pip_packages }}"
   tags:
     - swift-install
     - swift-pip-packages
@@ -178,7 +178,7 @@
   until: install_packages|success
   retries: 5
   delay: 2
-  with_items: swift_pip_packages
+  with_items: "{{ swift_pip_packages }}"
   when:
     - not swift_pypy_enabled | bool
     - swift_get_venv | failed or swift_developer_mode | bool

tasks/swift_key_distribute.yml

@@ -17,8 +17,10 @@
   authorized_key:
     user: "{{ swift_system_user_name }}"
     key: "{{ hostvars[item]['swift_pubkey'] | b64decode }}"
-  with_items: groups['swift_all'] + groups['swift_remote_all']
-  when: hostvars[item]['swift_pubkey'] is defined
+  with_items: "{{ groups['swift_all'] + groups['swift_remote_all'] }}"
+  when:
+    - hostvars[item] is defined
+    - hostvars[item]['swift_pubkey'] is defined
   tags:
     - swift-key
     - swift-key-create

tasks/swift_post_install.yml

@@ -46,12 +46,10 @@
 
 - name: Copy swift config
   template:
-    src: "{{ item.src }}"
-    dest: "{{ item.dest }}"
+    src: "swift-rsyslog.conf.j2"
+    dest: "/etc/rsyslog.d/49-swift.conf"
     owner: "{{ swift_system_user_name }}"
     group: "{{ swift_system_group_name }}"
-  with_items:
-    - { src: "swift-rsyslog.conf.j2", dest: "/etc/rsyslog.d/49-swift.conf" }
   notify:
     - Restart swift account services
     - Restart swift container services

tasks/swift_rings_check.yml

@@ -35,9 +35,11 @@
       "The builder files on the remote host {{ item }}:{{ hostvars[item]['builder_md5sum'] }}
        do not match {{ inventory_hostname }}:{{ md5sum.stdout }}
        and are not empty on the remote host"
-  when: >
-    ("{{ hostvars[item]['builder_md5sum'] }}" != "{{ empty_md5sum.stdout }}") and
-    ("{{ hostvars[item]['builder_md5sum'] }}" != "{{ md5sum.stdout }}")
-  with_items: groups['swift_all'] + groups['swift_remote_all']
+  when:
+    - hostvars[item] is defined
+    - hostvars[item]['builder_md5sum'] is defined
+    - hostvars[item]['builder_md5sum'] != empty_md5sum.stdout
+    - hostvars[item]['builder_md5sum'] != md5sum.stdout
+  with_items: "{{ groups['swift_all'] + groups['swift_remote_all'] }}"
   tags:
     - swift-ring-check

tasks/swift_storage_hosts_setup.yml

@@ -26,12 +26,6 @@
     sysctl_set: yes
   delegate_to: "{{ physical_host }}"
 
-# We need swift_vars to exist for the "swift_vars.drives is defined check" to work
-- name: "Set swift_vars if undefined"
-  set_fact:
-    swift_vars: "{}"
-  when: swift_vars is not defined
-
 - name: "Put /etc/rsyncd.conf in place"
   template:
     src: "rsyncd.conf.j2"
@@ -62,14 +56,4 @@
     owner: "{{ swift_system_user_name }}"
     group: "{{ swift_system_group_name }}"
     state: "directory"
-  with_items: swift_vars.drives
-  when: swift_vars.drives is defined
-
-- name: "Set ownership on default mounted drives"
-  file:
-    dest: "{{ swift_vars.mount_point | default(swift.mount_point) }}/{{ item.name }}"
-    owner: "{{ swift_system_user_name }}"
-    group: "{{ swift_system_group_name }}"
-    state: "directory"
-  with_items: swift.drives
-  when: swift_vars.drives is not defined
+  with_items: "{{ swift_vars.drives| default(swift.drives) | default([]) }}"

tasks/swift_sync_post_install.yml

@@ -29,5 +29,5 @@
     name: "{{ item }}"
     state: "started"
     pattern: "{{ item }}"
-  with_items: swift_proxy_program_names
+  with_items: "{{ swift_proxy_program_names }}"
   when: inventory_hostname in groups['swift_proxy']