Unexpected Exception when using notify with an handler defined in another play by an imported role

[pilou-]

SUMMARY

An exception occurs when a task tries to notify an handler from another play. This other play needs to use import_role in order to reproduce this error.

ERROR! Unexpected Exception, this is probably a bug: 'role1'
the full traceback was:

Traceback (most recent call last):
  File "ansible/bin/ansible-playbook", line 118, in <module>
    exit_code = cli.run()
  File "ansible/lib/ansible/cli/playbook.py", line 122, in run
    results = pbex.run()
  File "ansible/lib/ansible/executor/playbook_executor.py", line 156, in run
    result = self._tqm.run(play=play)
  File "ansible/lib/ansible/executor/task_queue_manager.py", line 291, in run
    play_return = strategy.run(iterator, play_context)
  File "ansible/lib/ansible/plugins/strategy/linear.py", line 267, in run
    results.extend(self._execute_meta(task, play_context, iterator, host))
  File "ansible/lib/ansible/plugins/strategy/__init__.py", line 1031, in _execute_meta
    self.run_handlers(iterator, play_context)
  File "/home/lilou/src/ansible/ansible.git/lib/ansible/plugins/strategy/__init__.py", line 885, in run_handlers
    result = self._do_handler_run(handler, handler_name, iterator=iterator, play_context=play_context)
  File "ansible/lib/ansible/plugins/strategy/__init__.py", line 928, in _do_handler_run
    host_results = self._wait_on_handler_results(iterator, handler, notified_hosts)
  File "ansible/lib/ansible/plugins/strategy/__init__.py", line 686, in _wait_on_handler_results
    results = self._process_pending_results(iterator)
  File "ansible/lib/ansible/plugins/strategy/__init__.py", line 117, in inner
    results = func(self, iterator, one_pass=one_pass, max_passes=max_passes)
  File "ansible/lib/ansible/plugins/strategy/__init__.py", line 656, in _process_pending_results
    for (entry, role_obj) in iteritems(iterator._play.ROLE_CACHE[original_task._role._role_name]):
KeyError: 'role1'

ISSUE TYPE

• Bug Report

COMPONENT NAME

ANSIBLE VERSION

ansible 2.7.0.a1.post0 (devel c07ba82d3e) last updated 2018/08/29 18:24:02 (GMT +200)

CONFIGURATION

N/A

OS / ENVIRONMENT

Python 3.6

STEPS TO REPRODUCE

• playbook:

- hosts: localhost
  gather_facts: yes
  tasks:
    - import_role:
        name: role1

- hosts: localhost
  gather_facts: yes
  tasks:
    - command: uname
      notify: test1

• role:

# role1/tasks/main.yml
- command: uname

# role1/handlers/main.yml
- name: test1
  debug:
    msg: test1

EXPECTED RESULTS

ERROR! The requested handler 'test1' was not found in either the main handlers list nor in the listening handlers list

ACTUAL RESULTS

See backtrace in summary.

[sivel]

The above PR should resolve these issues.