ansible_mitogen: Templated host option (e.g. ansible_host, ansible_ssh_host)

A twist - for the connection option "host" the corresponding legacy
PlayContext attribute is PlayContext.remote_addr. This may be the only case
where a connection option name and the PlayContext attribute name differ.

ansible_mitogen/transport_config.py

@@ -442,18 +442,22 @@ class PlayContextSpec(Spec):
                 raise
 
             LOG.info(
-                'Used PlayContext fallback for plugin=%r, option=%r',
+                'Used fallback=PlayContext.%s for plugin=%r, option=%r',
-                self._connection, name,
+                name, self._connection, name,
             )
             return getattr(self._play_context, name)
 
-
+    def _connection_option(self, name, fallback_attr=None):
-    def _connection_option(self, name):
         try:
             return self._connection.get_option(name, hostvars=self._task_vars)
         except KeyError:
-            LOG.debug('Used PlayContext fallback for option=%r', name)
+            if fallback_attr is None:
-            return getattr(self._play_context, name)
+                fallback_attr = name
+            LOG.info(
+                'Used fallback=PlayContext.%s for plugin=%r, option=%r',
+                fallback_attr, self._connection, name,
+            )
+            return getattr(self._play_context, fallback_attr)
 
     def transport(self):
         return self._transport
@@ -462,7 +466,7 @@ class PlayContextSpec(Spec):
         return self._inventory_name
 
     def remote_addr(self):
-        return self._play_context.remote_addr
+        return self._connection_option('host', fallback_attr='remote_addr')
 
     def remote_user(self):
         return self._connection_option('remote_user')

tests/ansible/hosts/default.hosts

@@ -22,9 +22,6 @@ ssh_args_canary_file=/tmp/ssh_args_by_inv_{{ inventory_hostname }}
 [tt_targets_bare]
 tt-bare
 
-[tt_targets_bare:vars]
-ansible_host=localhost
-
 [tt_become_bare]
 tt-become-bare
 
@@ -43,6 +40,7 @@ ansible_host=localhost
 ansible_user="{{ lookup('pipe', 'whoami') }}"
 
 [tt_targets_inventory]
+tt-host                     ansible_host="{{ 'localhost' | trim }}"    ansible_password=has_sudo_nopw_password    ansible_user=mitogen__has_sudo_nopw
 tt-host-key-checking        ansible_host=localhost    ansible_host_key_checking="{{ 'false' | trim }}"    ansible_password=has_sudo_nopw_password    ansible_user=mitogen__has_sudo_nopw
 tt-password                 ansible_host=localhost    ansible_password="{{ 'has_sudo_nopw_password' | trim }}"    ansible_user=mitogen__has_sudo_nopw
 tt-port                     ansible_host=localhost    ansible_password=has_sudo_nopw_password    ansible_port="{{ 22 | int }}"    ansible_user=mitogen__has_sudo_nopw

tests/ansible/integration/ssh/args_by_play_taskvar.yml

@@ -2,6 +2,7 @@
   hosts: tt_targets_bare
   gather_facts: false
   vars:
+    ansible_host: "{{ hostvars[groups['test-targets'][0]].host | default('localhost') }}"
     ansible_password: "{{ 'has_sudo_nopw_password' | trim }}"
     ansible_port: "{{ hostvars[groups['test-targets'][0]].ansible_port | default(22) }}"
     ansible_ssh_common_args: >-

tests/ansible/integration/ssh/templated_by_play_keyword.yml

@@ -3,6 +3,7 @@
   gather_facts: false
   remote_user: "{{ 'mitogen__has_sudo_nopw' | trim }}"
   vars:
+    ansible_host: "{{ hostvars[groups['test-targets'][0]].host | default('localhost') }}"
     ansible_password: has_sudo_nopw_password
     ansible_port: "{{ hostvars[groups['test-targets'][0]].ansible_port | default(22) }}"
   tasks:

tests/ansible/integration/ssh/templated_by_play_taskvar.yml

@@ -2,6 +2,7 @@
   hosts: tt_targets_bare
   gather_facts: false
   vars:
+    ansible_host: "{{ hostvars[groups['test-targets'][0]].host | default('localhost') }}"
     ansible_password: "{{ 'has_sudo_nopw_password' | trim }}"
     ansible_port: "{{ hostvars[groups['test-targets'][0]].ansible_port | default(22) }}"
     ansible_ssh_executable: "{{ 'ssh' | trim }}"
@@ -16,6 +17,7 @@
   hosts: tt_targets_bare
   gather_facts: false
   vars:
+    ansible_host: "{{ hostvars[groups['test-targets'][0]].host | default('localhost') }}"
     ansible_private_key_file: "{{ git_basedir }}/tests/data/docker/mitogen__has_sudo_pubkey.key"
     ansible_port: "{{ hostvars[groups['test-targets'][0]].ansible_port | default(22) }}"
     ansible_ssh_executable: "{{ 'ssh' | trim }}"

tests/ansible/integration/ssh/templated_by_task_keyword.yml

@@ -5,6 +5,7 @@
   #       https://github.com/mitogen-hq/mitogen/issues/1132
   remote_user: "{{ 'mitogen__has_sudo_nopw' | trim }}"
   vars:
+    ansible_host: "{{ hostvars[groups['test-targets'][0]].host | default('localhost') }}"
     ansible_password: has_sudo_nopw_password
     ansible_port: "{{ hostvars[groups['test-targets'][0]].ansible_port | default(22) }}"
   tasks:
@@ -19,6 +20,7 @@
       delegate_to: "{{ groups.tt_targets_bare[0] }}"
       remote_user: "{{ 'mitogen__has_sudo_nopw' | trim }}"
       vars:
+        ansible_host: "{{ hostvars[groups['test-targets'][0]].host | default('localhost') }}"
         ansible_password: has_sudo_nopw_password
         ansible_port: "{{ hostvars[groups['test-targets'][0]].ansible_port | default(22) }}"
       ping:

tests/ansible/templates/test-targets.j2

@@ -44,7 +44,6 @@ ssh_args_canary_file=/tmp/ssh_args_by_inv_{{ '{{' }} inventory_hostname {{ '}}'
 tt-bare
 
 [tt_targets_bare:vars]
-ansible_host={{ tt.hostname }}
 ansible_python_interpreter={{ tt.python_path }}
 
 [tt_become_bare]
@@ -71,6 +70,7 @@ ansible_python_interpreter={{ tt.python_path }}
 ansible_user=mitogen__has_sudo_nopw
 
 [tt_targets_inventory]
+tt-host                     ansible_host="{{ '{{' }} '{{ tt.hostname }}' | trim {{ '}}' }}"    ansible_password=has_sudo_nopw_password    ansible_port={{ tt.port }}    ansible_python_interpreter={{ tt.python_path }}    ansible_user=mitogen__has_sudo_nopw
 tt-host-key-checking        ansible_host={{ tt.hostname }}    ansible_host_key_checking="{{ '{{' }} 'false' | trim {{ '}}' }}"    ansible_password=has_sudo_nopw_password    ansible_port={{ tt.port }}    ansible_python_interpreter={{ tt.python_path }}    ansible_user=mitogen__has_sudo_nopw
 tt-password                 ansible_host={{ tt.hostname }}    ansible_password="{{ '{{' }} 'has_sudo_nopw_password' | trim {{ '}}' }}"    ansible_port={{ tt.port }}    ansible_python_interpreter={{ tt.python_path }}    ansible_user=mitogen__has_sudo_nopw
 tt-port                     ansible_host={{ tt.hostname }}    ansible_password=has_sudo_nopw_password    ansible_port="{{ '{{' }} {{ tt.port }} | int {{ '}}' }}"    ansible_python_interpreter={{ tt.python_path }}    ansible_user=mitogen__has_sudo_nopw