davisp commented on a change in pull request #1789: New Feature: Database
Partitions
URL: https://github.com/apache/couchdb/pull/1789#discussion_r242682989
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File path: src/mango/src/mango_idx.erl
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@@ -329,6 +339,87 @@ gen_name(Idx, Opts0) ->
mango_util:enc_hex(Sha).
+get_idx_partitioned(Opts) ->
+ case proplists:get_value(partitioned, Opts) of
+ B when is_boolean(B) ->
+ B;
+ default ->
+ undefined
+ end.
+
+
+set_ddoc_partitioned(DDoc, Idx) ->
+ % We have to verify that the new index being added
+ % to this design document either matches the current
+ % ddoc's design options *or* this is a new design doc
+ #doc{
+ id = DDocId,
+ revs = Revs,
+ body = {BodyProps}
+ } = DDoc,
+ OldDOpts = couch_util:get_value(<<"options">>, BodyProps),
+ OldOpt = case OldDOpts of
+ {OldDOptProps} when is_list(OldDOptProps) ->
+ couch_util:get_value(<<"partitioned">>, OldDOptProps);
+ _ ->
+ undefined
+ end,
+ % If new matches old we're done
+ if Idx#idx.partitioned == OldOpt -> DDoc; true ->
+ % If we're creating a ddoc then we can set the options
+ case Revs == {0, []} of
+ true when Idx#idx.partitioned /= undefined ->
+ set_ddoc_partitioned_option(DDoc, Idx#idx.partitioned);
+ true when Idx#idx.partitioned == undefined ->
+ DDoc;
+ false ->
+ ?MANGO_ERROR({partitioned_option_mismatch, DDocId})
+ end
+ end.
+
+
+set_ddoc_partitioned_option(DDoc, Partitioned) ->
+ #doc{
+ body = {BodyProps}
+ } = DDoc,
+ NewProps = case couch_util:get_value(<<"options">>, BodyProps) of
Review comment:
BodyProps is user provided input so there's no guarantee that the
`partitioned` key was provided in the JSON blob.
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