Reboot - Fix command not found, add Apline support, fix Solaris command (#49272)

* Fix various bugs related in reboot

- Use format strings for consistency and improve debug log messages
- Use local variables instead of class attributes in order to be thread safe
- Run setup module to get distribution and version
- Run find module to get full path of shutdown command
- Use ansible_os_family and ansible_distribution to find commands and args
- Use same command for all Solaris/SunOS distributions
- Move delay calculations to properties
- Reliably check for module run failure
- Fix bug in run_test_command() that accidentally made the method work properly
- Use better exceptions rather than Exception
- Use dict literals rather than constructors
- Correct _check_delay() so it always returns a value, not None
- Don't store and return result in run_test_command() because it's not used anywhere
- add test for post reboot command that fails
- test negative values for delay parameters

test/integration/targets/reboot/tasks/check_reboot.yml

@@ -0,0 +1,10 @@
+- name: Get current boot time
+  command: "{{ boot_time_command[ansible_facts['distribution'] | lower] | default('cat /proc/sys/kernel/random/boot_id') }}"
+  register: after_boot_time
+
+- name: Ensure system was actually rebooted
+  assert:
+    that:
+      - reboot_result is changed
+      - reboot_result.elapsed > 10
+      - before_boot_time.stdout != after_boot_time.stdout

test/integration/targets/reboot/tasks/get_boot_time.yml

@@ -0,0 +1,3 @@
+- name: Get current boot time
+  command: "{{ boot_time_command[ansible_facts['distribution'] | lower] | default('cat /proc/sys/kernel/random/boot_id') }}"
+  register: before_boot_time

test/integration/targets/reboot/tasks/main.yml

@@ -7,6 +7,8 @@
             content: 'I am the control node'
             dest: /tmp/Anything-Nutlike-Nuzzle-Plow-Overdue
           delegate_to: localhost
+          connection: local
+          when: inventory_hostname == ansible_play_hosts[0]
 
         - name: See if the temp file exists on the managed node
           stat:
@@ -22,29 +24,40 @@
             that:
               - not controller_temp_file.stat.exists
 
-    - name: Get current boot time
-      command: who -b
-      register: before_boot_time
+    - import_tasks: get_boot_time.yml
 
     - name: Reboot with default settings
       reboot:
       register: reboot_result
 
-    - name: Get current boot time
-      command: who -b
-      register: after_boot_time
+    - import_tasks: check_reboot.yml
 
-    - name: Ensure system was actually rebooted
-      assert:
-        that:
-          - reboot_result is changed
-          - reboot_result.elapsed > 10
-          - before_boot_time.stdout != after_boot_time.stdout
+    - import_tasks: get_boot_time.yml
+
+    - name: Reboot with all options
+      reboot:
+        connect_timeout: 30
+        msg: Rebooting
+        post_reboot_delay: 1
+        pre_reboot_delay: 61
+        test_command: uptime
+        reboot_timeout: 500
+
+    - import_tasks: check_reboot.yml
+
+    - import_tasks: get_boot_time.yml
+
+    - name: Test with negative values for delays
+      reboot:
+        post_reboot_delay: -0.5
+        pre_reboot_delay: -61
+
+    - import_tasks: check_reboot.yml
 
     - name: Use invalid parameter
       reboot:
         foo: bar
-      ignore_errors: yes
+      ignore_errors: true
       register: invalid_parameter
 
     - name: Ensure task fails with error
@@ -53,10 +66,22 @@
         - invalid_parameter is failed
         - "invalid_parameter.msg == 'Invalid options for reboot: foo'"
 
+    - name: Reboot with test command that fails
+      reboot:
+        test_command: 'FAIL'
+        reboot_timeout: "{{ timeout }}"
+      register: reboot_fail_test
+      failed_when: "reboot_fail_test.msg != 'Timed out waiting for post-reboot test command (timeout=' ~ timeout ~ ')'"
+      vars:
+        timeout: "{{ timeout_value[ansible_facts['distribution'] | lower] | default(60) }}"
+
   always:
     - name: Cleanup temp file
       file:
         path: /tmp/Anything-Nutlike-Nuzzle-Plow-Overdue
         state: absent
+      delegate_to: localhost
+      connection: local
+      when: inventory_hostname == ansible_play_hosts[0]
 
   when: ansible_virtualization_type | default('') != 'docker'

test/integration/targets/reboot/vars/main.yml

@@ -0,0 +1,9 @@
+boot_time_command:
+  freebsd: '/sbin/sysctl kern.boottime'
+  openbsd: '/sbin/sysctl kern.boottime'
+  macosx: 'who -b'
+  solaris: 'who -b'
+  sunos: 'who -b'
+
+timeout_value:
+  solaris: 120