1 files changed, 67 insertions, 0 deletions
diff --git a/src/fabric/src/fabric_db_uuids.erl b/src/fabric/src/fabric_db_uuids.erl
new file mode 100644
index 000000000..8eb0aaed8
--- /dev/null
+++ b/src/fabric/src/fabric_db_uuids.erl
@@ -0,0 +1,67 @@
+% 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(fabric_db_uuids).
+
+
+-export([go/1]).
+
+
+-include_lib("fabric/include/fabric.hrl").
+-include_lib("mem3/include/mem3.hrl").
+
+
+go(DbName) when is_binary(DbName) ->
+    Shards = mem3:live_shards(DbName, [node() | nodes()]),
+    Workers = fabric_util:submit_jobs(Shards, get_uuid, []),
+    RexiMon = fabric_util:create_monitors(Shards),
+    Acc0 = {fabric_dict:init(Workers, nil), []},
+    try fabric_util:recv(Workers, #shard.ref, fun handle_message/3, Acc0) of
+    {timeout, {WorkersDict, _}} ->
+        DefunctWorkers = fabric_util:remove_done_workers(WorkersDict, nil),
+        fabric_util:log_timeout(DefunctWorkers, "db_uuids"),
+        {error, timeout};
+    Else ->
+        Else
+    after
+        rexi_monitor:stop(RexiMon)
+    end.
+
+
+handle_message({rexi_DOWN, _, {_, NodeRef},_}, _Shard, {Cntrs, Res}) ->
+    case fabric_ring:node_down(NodeRef, Cntrs, Res, [all]) of
+        {ok, Cntrs1} -> {ok, {Cntrs1, Res}};
+        error -> {error, {nodedown, <<"progress not possible">>}}
+    end;
+
+handle_message({rexi_EXIT, Reason}, Shard, {Cntrs, Res}) ->
+    case fabric_ring:handle_error(Shard, Cntrs, Res, [all]) of
+        {ok, Cntrs1} -> {ok, {Cntrs1, Res}};
+        error -> {error, Reason}
+    end;
+
+handle_message(Uuid, Shard, {Cntrs, Res}) when is_binary(Uuid) ->
+    case fabric_ring:handle_response(Shard, Uuid, Cntrs, Res, [all]) of
+        {ok, {Cntrs1, Res1}} ->
+            {ok, {Cntrs1, Res1}};
+        {stop, Res1} ->
+            Uuids = fabric_dict:fold(fun(#shard{} = S, Id, #{} = Acc) ->
+                Acc#{Id => S#shard{ref = undefined}}
+            end, #{}, Res1),
+            {stop, Uuids}
+    end;
+
+handle_message(Reason, Shard, {Cntrs, Res}) ->
+    case fabric_ring:handle_error(Shard, Cntrs, Res, [all]) of
+        {ok, Cntrs1} -> {ok, {Cntrs1, Res}};
+        error -> {error, Reason}
+    end.