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-rw-r--r--util/pubsub.lua44
1 files changed, 30 insertions, 14 deletions
diff --git a/util/pubsub.lua b/util/pubsub.lua
index e0d428c0..fc67cb1f 100644
--- a/util/pubsub.lua
+++ b/util/pubsub.lua
@@ -1,4 +1,5 @@
local events = require "util.events";
+local t_remove = table.remove;
module("pubsub", package.seeall);
@@ -18,6 +19,7 @@ function new(config)
affiliations = {};
subscriptions = {};
nodes = {};
+ data = {};
events = events.new();
}, service_mt);
end
@@ -212,16 +214,19 @@ function service:create(node, actor)
return false, "conflict";
end
+ self.data[node] = {};
self.nodes[node] = {
name = node;
subscribers = {};
config = {};
- data = {};
affiliations = {};
};
+ setmetatable(self.nodes[node], { __index = { data = self.data[node] } }); -- COMPAT
+ self.events.fire_event("node-created", { node = node, actor = actor });
local ok, err = self:set_affiliation(node, true, actor, "owner");
if not ok then
self.nodes[node] = nil;
+ self.data[node] = nil;
end
return ok, err;
end
@@ -237,10 +242,23 @@ function service:delete(node, actor)
return false, "item-not-found";
end
self.nodes[node] = nil;
+ self.data[node] = nil;
+ self.events.fire_event("node-deleted", { node = node, actor = actor });
self.config.broadcaster("delete", node, node_obj.subscribers);
return true;
end
+local function remove_item_by_id(data, id)
+ if not data[id] then return end
+ data[id] = nil;
+ for i, _id in ipairs(data) do
+ if id == _id then
+ t_remove(data, i);
+ return i;
+ end
+ end
+end
+
function service:publish(node, actor, id, item)
-- Access checking
if not self:may(node, actor, "publish") then
@@ -258,8 +276,10 @@ function service:publish(node, actor, id, item)
end
node_obj = self.nodes[node];
end
- node_obj.data[#node_obj.data + 1] = id;
- node_obj.data[id] = item;
+ local node_data = self.data[node];
+ remove_item_by_id(node_data, id);
+ node_data[#self.data[node] + 1] = id;
+ node_data[id] = item;
self.events.fire_event("item-published", { node = node, actor = actor, id = id, item = item });
self.config.broadcaster("items", node, node_obj.subscribers, item);
return true;
@@ -272,16 +292,11 @@ function service:retract(node, actor, id, retract)
end
--
local node_obj = self.nodes[node];
- if (not node_obj) or (not node_obj.data[id]) then
+ if (not node_obj) or (not self.data[node][id]) then
return false, "item-not-found";
end
- node_obj.data[id] = nil;
- for i, _id in ipairs(node_obj.data) do
- if id == _id then
- table.remove(node_obj, i);
- break;
- end
- end
+ self.events.fire_event("item-retracted", { node = node, actor = actor, id = id });
+ remove_item_by_id(self.data[node], id);
if retract then
self.config.broadcaster("items", node, node_obj.subscribers, retract);
end
@@ -298,7 +313,8 @@ function service:purge(node, actor, notify)
if not node_obj then
return false, "item-not-found";
end
- node_obj.data = {}; -- Purge
+ self.data[node] = {}; -- Purge
+ self.events.fire_event("node-purged", { node = node, actor = actor });
if notify then
self.config.broadcaster("purge", node, node_obj.subscribers);
end
@@ -316,9 +332,9 @@ function service:get_items(node, actor, id)
return false, "item-not-found";
end
if id then -- Restrict results to a single specific item
- return true, { id, [id] = node_obj.data[id] };
+ return true, { id, [id] = self.data[node][id] };
else
- return true, node_obj.data;
+ return true, self.data[node];
end
end