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Posted to server-dev@james.apache.org by "Tellier Benoit (JIRA)" <se...@james.apache.org> on 2018/02/08 03:45:00 UTC
[jira] [Created] (JAMES-2335) Modernize James configuration
Tellier Benoit created JAMES-2335:
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Summary: Modernize James configuration
Key: JAMES-2335
URL: https://issues.apache.org/jira/browse/JAMES-2335
Project: James Server
Issue Type: Improvement
Components: configuration
Reporter: Tellier Benoit
Apache James currently relies on commons-configuration, and thus on XML configuration files.
As such the configuration process has several problems:
- Working with XML is boiler plate
- Working with file leads to a real lack of flexibility.
- For instance, in a cluster environment, we would like all the James server to share the same configurations.
- Also, in tests, we need to test the different configuration values. We can not do this without overwriting files, which is dangerous, and boilerplate.
What we need is:
- To represent all possible configuration via java objects.
- Configuration providers should be able to convert the configuration stored into the java configuration object.
It would allow to specify alternative configuration backends (different formats, different storage techniques) and allow direct injection (for tests for instance).
Here would be the steps for this work:
- Add a *Initializable* class in *lifecycle-api*. This should be called by Guice and Sprint at initialization
- *configure* in Configurable will save a Java object (parse the HierachicalConfiguration into a java object representing it's content). Initialization will then be done by *Initializable*.
- Then we can move away, object by object, from the *Configurable* interface: We need to move the configuration parsing in a separated class (behind an interface). We can register *ConfigurationProviders*, with an XML/commons-configuration default implementation.
- Deprecate *Configurable*.
- Provide alternative configuration providers, for example, a Cassandra stored configuration provider
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