[jira] [Created] (SOLR-14977) Container plugins need a way to be configured

["Andrzej Bialecki (Jira)" <ji...@apache.org>]

Andrzej Bialecki created SOLR-14977:
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             Summary: Container plugins need a way to be configured
                 Key: SOLR-14977
                 URL: https://issues.apache.org/jira/browse/SOLR-14977
             Project: Solr
          Issue Type: Improvement
      Security Level: Public (Default Security Level. Issues are Public)
          Components: Plugin system
            Reporter: Andrzej Bialecki


Container plugins are defined in {{/clusterprops.json:/plugin}} using a simple {{PluginMeta}} bean. This is sufficient for implementations that don't need any configuration except for the {{pathPrefix}} but insufficient for anything else that needs more configuration parameters.

An example would be a {{CollectionsRepairEventListener}} plugin proposed in PR-1962, which needs parameters such as the list of collections, {{waitFor}}, maximum operations allowed, etc. to properly function.

This issue proposes to extend the {{PluginMeta}} bean to allow a {{Map<String, Object>}} configuration parameters.

There is an interface that we could potentially use ({{MapInitializedPlugin}} but it works only with {{String}} values. This is not optimal because it requires additional type-safety validation from the consumers. The existing {{PluginInfo}} / {{PluginInfoInitialized}} interface is too complex for this purpose.



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