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Use locking for concurrent file access (#52567)

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* Use locking for concurrent file access

This implements locking to be used for modules that are used for
concurrent file access, like lineinfile or known_hosts.

* Reinstate lock_timeout

This commit includes:
- New file locking infrastructure for modules
- Enable timeout tests
- Madifications to support concurrency with lineinfile

* Rebase, update changelog and tests

We need to specify ansible_python_interpreter to avoid running interpreter discovery and selecting the incorrect interpreter.

Remove the import of lock in known_hosts since it is not used.
This commit is contained in:
Dag Wieers 2019-03-28 01:20:18 +01:00 • committed by Sam Doran
commit e152b277cf
9 changed files with 363 additions and 225 deletions
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changelogs/fragments/30413-lineinfile-concurrence_issue.yaml Normal file
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bugfixes:
- change file locking implementation from a class to context manager to allow easy and safe concurrent file access by modules
- lineinfile - lock on concurrent file access (https://github.com/ansible/ansible/issues/30413)