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Perform config.on_before_reload callback before reload #3

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Perform config.on_before_reload callback before reload #3

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18 changes: 18 additions & 0 deletions package/reload.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -78,6 +78,24 @@ function M:wait_start()
end

function M:_reload()
for name, m in pairs(package.loaded) do
-- M.loaded table contains reloadless packages, we'll skip it
if not M.loaded[name] and type(m) == 'table' then
-- Some packages use __index meta method, we'll go around it with rawget
local cb = rawget(m, 'on_before_reload')
if type(cb) == 'function' then
log.info('Gen %s, perform %s.on_before_reload callback', M.count, name)
local ok, err = pcall(cb)
if not ok then
local err_msg = string.format(
'Stop reload %s => %s because %s.on_before_reload failed: %s', numstr(M.count), numstr(M.count+1), name, err)
log.error(err_msg)
error(err_msg)
end
end
end
end

M.count = M.count + 1
local unload = {}
for m in pairs(package.loaded) do
Expand Down