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local M = {}
local report_info = vim.health.info
local report_warn = vim.health.warn
local function check_log()
local log = vim.lsp.log
local current_log_level = log.get_level()
local log_level_string = log.levels[current_log_level] ---@type string
report_info(string.format('LSP log level : %s', log_level_string))
if current_log_level < log.levels.WARN then
report_warn(
string.format(
'Log level %s will cause degraded performance and high disk usage',
log_level_string
)
)
end
local log_path = vim.lsp.get_log_path()
report_info(string.format('Log path: %s', log_path))
local log_file = vim.uv.fs_stat(log_path)
local log_size = log_file and log_file.size or 0
local report_fn = (log_size / 1000000 > 100 and report_warn or report_info)
report_fn(string.format('Log size: %d KB', log_size / 1000))
end
local function check_active_clients()
vim.health.start('vim.lsp: Active Clients')
local clients = vim.lsp.get_clients()
if next(clients) then
for _, client in pairs(clients) do
local attached_to = table.concat(vim.tbl_keys(client.attached_buffers or {}), ',')
report_info(
string.format(
'%s (id=%s, root_dir=%s, attached_to=[%s])',
client.name,
client.id,
vim.fn.fnamemodify(client.root_dir, ':~'),
attached_to
)
)
end
else
report_info('No active clients')
end
end
local function check_watcher()
vim.health.start('vim.lsp: File watcher')
local watchfunc = vim.lsp._watchfiles._watchfunc
assert(watchfunc)
local watchfunc_name --- @type string
if watchfunc == vim._watch.watch then
watchfunc_name = 'libuv-watch'
elseif watchfunc == vim._watch.watchdirs then
watchfunc_name = 'libuv-watchdirs'
elseif watchfunc == vim._watch.fswatch then
watchfunc_name = 'fswatch'
else
local nm = debug.getinfo(watchfunc, 'S').source
watchfunc_name = string.format('Custom (%s)', nm)
end
report_info('File watch backend: ' .. watchfunc_name)
if watchfunc_name == 'libuv-watchdirs' then
report_warn('libuv-watchdirs has known performance issues. Consider installing fswatch.')
end
end
--- Performs a healthcheck for LSP
function M.check()
check_log()
check_active_clients()
check_watcher()
end
return M
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