async: use async_dir for the async results file directory (#45461)

* win async: use async_dir for the async results file directory

* tried to unify POSIX and PowerShell async implementations of async_dir

* fix sanity issue

lib/ansible/plugins/action/__init__.py

@@ -734,6 +734,30 @@ class ActionBase(with_metaclass(ABCMeta, object)):
 
         self._update_module_args(module_name, module_args, task_vars)
 
+        # FIXME: convert async_wrapper.py to not rely on environment variables
+        # make sure we get the right async_dir variable, backwards compatibility
+        # means we need to lookup the env value ANSIBLE_ASYNC_DIR first
+        remove_async_dir = None
+        if wrap_async or self._task.async_val:
+            env_async_dir = [e for e in self._task.environment if
+                             "ANSIBLE_ASYNC_DIR" in e]
+            if len(env_async_dir) > 0:
+                msg = "Setting the async dir from the environment keyword " \
+                      "ANSIBLE_ASYNC_DIR is deprecated. Set the async_dir " \
+                      "shell option instead"
+                self._display.deprecated(msg, "2.12")
+            else:
+                # ANSIBLE_ASYNC_DIR is not set on the task, we get the value
+                # from the shell option and temporarily add to the environment
+                # list for async_wrapper to pick up
+                try:
+                    async_dir = self._connection._shell.get_option('async_dir')
+                except KeyError:
+                    # in case 3rd party plugin has not set this, use the default
+                    async_dir = "~/.ansible_async"
+                remove_async_dir = len(self._task.environment)
+                self._task.environment.append({"ANSIBLE_ASYNC_DIR": async_dir})
+
         # FUTURE: refactor this along with module build process to better encapsulate "smart wrapper" functionality
         (module_style, shebang, module_data, module_path) = self._configure_module(module_name=module_name, module_args=module_args, task_vars=task_vars)
         display.vvv("Using module file %s" % module_path)
@@ -776,6 +800,12 @@ class ActionBase(with_metaclass(ABCMeta, object)):
 
         environment_string = self._compute_environment_string()
 
+        # remove the ANSIBLE_ASYNC_DIR env entry if we added a temporary one for
+        # the async_wrapper task - this is so the async_status plugin doesn't
+        # fire a deprecation warning when it runs after this task
+        if remove_async_dir is not None:
+            del self._task.environment[remove_async_dir]
+
         remote_files = []
         if tmpdir and remote_module_path:
             remote_files = [tmpdir, remote_module_path]

lib/ansible/plugins/action/async_status.py

@@ -0,0 +1,51 @@
+# Copyright: (c) 2018, Ansible Project
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
+
+from __future__ import (absolute_import, division, print_function)
+__metaclass__ = type
+
+from ansible.errors import AnsibleError
+from ansible.plugins.action import ActionBase
+from ansible.utils.vars import merge_hash
+
+
+class ActionModule(ActionBase):
+
+    _VALID_ARGS = frozenset(('jid', 'mode'))
+
+    def run(self, tmp=None, task_vars=None):
+        results = super(ActionModule, self).run(tmp, task_vars)
+        del tmp  # tmp no longer has any effect
+
+        if "jid" not in self._task.args:
+            raise AnsibleError("jid is required")
+        jid = self._task.args["jid"]
+        mode = self._task.args.get("mode", "status")
+
+        env_async_dir = [e for e in self._task.environment if
+                         "ANSIBLE_ASYNC_DIR" in e]
+        if len(env_async_dir) > 0:
+            # for backwards compatibility we need to get the dir from
+            # ANSIBLE_ASYNC_DIR that is defined in the environment. This is
+            # deprecated and will be removed in favour of shell options
+            async_dir = env_async_dir[0]['ANSIBLE_ASYNC_DIR']
+
+            msg = "Setting the async dir from the environment keyword " \
+                  "ANSIBLE_ASYNC_DIR is deprecated. Set the async_dir " \
+                  "shell option instead"
+            self._display.deprecated(msg, "2.12")
+        else:
+            # inject the async directory based on the shell option into the
+            # module args
+            try:
+                async_dir = self._connection._shell.get_option('async_dir')
+            except KeyError:
+                # here for 3rd party shell plugin compatibility in case they do
+                # not define the async_dir option
+                async_dir = "~/.ansible_async"
+
+        module_args = dict(jid=jid, mode=mode, _async_dir=async_dir)
+        status = self._execute_module(task_vars=task_vars,
+                                      module_args=module_args)
+        results = merge_hash(results, status)
+        return results