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Diffstat (limited to 'deps/mem3/src/mem3_httpd.erl')
-rw-r--r-- | deps/mem3/src/mem3_httpd.erl | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/deps/mem3/src/mem3_httpd.erl b/deps/mem3/src/mem3_httpd.erl new file mode 100644 index 00000000..716080f8 --- /dev/null +++ b/deps/mem3/src/mem3_httpd.erl @@ -0,0 +1,53 @@ +% Copyright 2010 Cloudant +% +% Licensed under the Apache License, Version 2.0 (the "License"); you may not +% use this file except in compliance with the License. You may obtain a copy of +% the License at +% +% http://www.apache.org/licenses/LICENSE-2.0 +% +% Unless required by applicable law or agreed to in writing, software +% distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +% WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +% License for the specific language governing permissions and limitations under +% the License. + +-module(mem3_httpd). + +-export([handle_membership_req/1]). + +%% includes +-include("mem3.hrl"). +-include_lib("couch/include/couch_db.hrl"). + + +handle_membership_req(#httpd{method='GET', + path_parts=[<<"_membership">>]} = Req) -> + ClusterNodes = try mem3:nodes() + catch _:_ -> {ok,[]} end, + couch_httpd:send_json(Req, {[ + {all_nodes, lists:sort([node()|nodes()])}, + {cluster_nodes, lists:sort(ClusterNodes)} + ]}); +handle_membership_req(#httpd{method='GET', + path_parts=[<<"_membership">>, <<"parts">>, DbName]} = Req) -> + ClusterNodes = try mem3:nodes() + catch _:_ -> {ok,[]} end, + Shards = mem3:shards(DbName), + JsonShards = json_shards(Shards, dict:new()), + couch_httpd:send_json(Req, {[ + {all_nodes, lists:sort([node()|nodes()])}, + {cluster_nodes, lists:sort(ClusterNodes)}, + {partitions, JsonShards} + ]}). + +%% +%% internal +%% + +json_shards([], AccIn) -> + List = dict:to_list(AccIn), + {lists:sort(List)}; +json_shards([#shard{node=Node, range=[B,_E]} | Rest], AccIn) -> + HexBeg = couch_util:to_hex(<<B:32/integer>>), + json_shards(Rest, dict:append(HexBeg, Node, AccIn)). |