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Add ability to append to lists.

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List nodes can now have an 'append' key. If present and true, any values
in this list will be appended to the end of any existing list with the
same name.

It is an error to have a list with 'append' true that has a name that is
not an existing list.
This commit is contained in:
Mark Stemm 2017-08-09 16:45:47 -07:00
parent 9d6fe878e1
commit 2c189d6a60
1 changed files with 18 additions and 1 deletions
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19
userspace/engine/lua/rule_loader.lua
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@ -222,7 +222,24 @@ function load_rules(rules_content, rules_mgr, verbose, all_events, extra, replac
end
end
state.lists_by_name[v['list']] = v
-- Possibly append to an existing list
append = false
if v['append'] then
append = v['append']
end
if append then
if state.lists_by_name[v['list']] == nil then
error ("List " ..v['list'].. " has 'append' key but no list by that name already exists")
end
for i, elem in ipairs(v['items']) do
table.insert(state.lists_by_name[v['list']]['items'], elem)
end
else
state.lists_by_name[v['list']] = v
end
elseif (v['rule']) then