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Ran 11 Apr 2018 04:00PM UTC

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Committed 11 Apr 2018 03:54PM UTC coverage: 98.704% (+0.008%) from 98.696%

Job # TOXENV=cover FYI="this also tests py27"

Build Type

push

travis-ci

Committed by

bmw

Commit Message

PluginStorage to store variables between invocations. (#5468)

The base class for Installer plugins `certbot.plugins.common.Installer` now provides functionality of `PluginStorage` to all installer plugins. This allows a plugin to save and retrieve variables in between of invocations.

The on disk storage is basically a JSON file at `config_dir`/`.pluginstorage.json`, usually `/etc/letsencrypt/.pluginstorage.json`. The JSON structure is automatically namespaced using the internal plugin name as a namespace key. Because the actual storage is JSON, the supported data types are: dict, list, tuple, str, unicode, int, long, float, boolean and nonetype.

To add a variable from inside the plugin class:
`self.storage.put("my_variable_name", my_var)`

To fetch a variable from inside the plugin class:
`my_var = self.storage.fetch("my_variable_key")`

The storage state isn't written on disk automatically, but needs to be called:
`self.storage.save()`

* Plugin storage implementation

* Added config_dir to existing test mocks

* PluginStorage test cases

* Saner handling of bad config_dir paths

* Storage moved to Installer and not initialized on plugin __init__

* Finetuning and renaming

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