diff options
Diffstat (limited to 'deps/mem3/src/mem3_sync_event.erl')
-rw-r--r-- | deps/mem3/src/mem3_sync_event.erl | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/deps/mem3/src/mem3_sync_event.erl b/deps/mem3/src/mem3_sync_event.erl new file mode 100644 index 00000000..be5ab450 --- /dev/null +++ b/deps/mem3/src/mem3_sync_event.erl @@ -0,0 +1,68 @@ +% 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_sync_event). +-behaviour(gen_event). + +-export([init/1, handle_event/2, handle_call/2, handle_info/2, terminate/2, + code_change/3]). + +init(_) -> + net_kernel:monitor_nodes(true), + {ok, nil}. + +handle_event({add_node, Node}, State) when Node =/= node() -> + Db1 = list_to_binary(couch_config:get("mem3", "node_db", "nodes")), + Db2 = list_to_binary(couch_config:get("mem3", "shard_db", "dbs")), + Db3 = list_to_binary(couch_config:get("couch_httpd_auth", + "authentication_db", "_users")), + [mem3_sync:push(Db, Node) || Db <- [Db1, Db2, Db3]], + {ok, State}; + +handle_event({remove_node, Node}, State) -> + mem3_sync:remove_node(Node), + {ok, State}; + +handle_event(_Event, State) -> + {ok, State}. + +handle_call(_Request, State) -> + {ok, ok, State}. + +handle_info({nodeup, Node}, State) -> + case lists:member(Node, mem3:nodes()) of + true -> + Db1 = list_to_binary(couch_config:get("mem3", "node_db", "nodes")), + Db2 = list_to_binary(couch_config:get("mem3", "shard_db", "dbs")), + Db3 = list_to_binary(couch_config:get("couch_httpd_auth", + "authentication_db", "_users")), + [mem3_sync:push(Db, Node) || Db <- [Db1, Db2, Db3]], + mem3_sync:initial_sync([Node]); + false -> + ok + end, + {ok, State}; + +handle_info({nodedown, Node}, State) -> + mem3_sync:remove_node(Node), + {ok, State}; + +handle_info(_Info, State) -> + {ok, State}. + +terminate(_Reason, _State) -> + ok. + +code_change(_OldVsn, State, _Extra) -> + {ok, State}. |