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Update README.md (#167)

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Chris O'Haver 2019-05-14 12:09:59 -04:00 • committed by GitHub
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kubernetes/migration/README.md
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@ -24,16 +24,16 @@ Plugin "baz" is unsupported by this migration tool in <version>.
`Deprecated(fromCoreDNSVersion, toCoreDNSVersion, corefileStr string) ([]Notice, error)`
Deprecated returns a list of deprecation notices affecting the given Corefile. Notices are returned for
any deprecated, removed, or ignored plugins/directives present in the Corefile. Notices are also returned for
any deprecated, removed, or ignored plugins/options present in the Corefile. Notices are also returned for
any new default plugins that would be added in a migration. Notices
`Migrate(fromCoreDNSVersion, toCoreDNSVersion, corefileStr string, deprecations bool) (string, error)`
Migrate returns a migrated version of the Corefile, or an error if it cannot. It will:
* replace/convert any plugins/directives that have replacements (e.g. _proxy_ -> _forward_)
* return an error if replacable plugins/directives cannot be converted (e.g. proxy _options_ not available in _forward_)
* remove plugins/directives that do not have replacements (e.g. kubernetes `upstream`)
* replace/convert any plugins/options that have replacements (e.g. _proxy_ -> _forward_)
* return an error if replacable plugins/options cannot be converted (e.g. proxy _options_ not available in _forward_)
* remove plugins/options that do not have replacements (e.g. kubernetes `upstream`)
* add in any new default plugins where applicable if they are not already present (e.g. adding _loop_ plugin when it was added).
This will have to be case by case, and could potentially get complicated.
* If deprecations is true, deprecated plugins/options will be migrated as soon as they are deprecated.