[GitHub] wohali opened a new pull request #862: [WIP] Configurably whitelist certain db/docids as valid

[gi...@git.apache.org]

wohali opened a new pull request #862: [WIP] Configurably whitelist certain db/docids as valid
URL: https://github.com/apache/couchdb/pull/862
 
 
   Currently, it is impossible to `PUT/POST` these documents:
   * `_dbs/_users`
   * `_dbs/_replicator`
   * `_dbs/_global_changes`
   
   because the document `_ids` are reserved. This change permits these
   specific `db/docid` combinations as valid so `PUT/POST` operations can
   succeed. The specific list is configurable.
   
   This is a WIP to make sure the approach is acceptable. I had to dig
   really deep into `couch_doc` to make these changes, and while I'm not
   very happy with the encapsulation violation it introduces, I'm afraid we
   have little choice without a complete rewrite.
   
   If the approach is acceptable, proper tests will be forthcoming:
   * config checks
   * `PUT/POST` positive and negative test cases
   
   /cc @davisp @rnewson @nickva 
 
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