Add some error handling

lua/telescope/_extensions/knot.lua

@@ -53,12 +53,21 @@ local _parse_record = function(rec)
   for _, v in ipairs(rec) do
     if v ~= nil and v ~= "" then
       local key = v:match("%w+"):lower()
+      if vim.tbl_contains({ "zone", "rtype", "name", "data", "ttl" }, key) then
         record[key] = v:gsub("%w+%:%s", "")
       end
     end
+  end
   return record
 end
 
+local _validate_record = function(record)
+  if record.zone == nil or record.rtype == nil or record.name == nil or record.data == nil then
+    return false
+  end
+  return true
+end
+
 local M = {}
 M.add = function(_)
   local tempfile = vim.fn.tempname()
@@ -82,6 +91,7 @@ M.add = function(_)
     callback = function(_)
       local new = vim.api.nvim_buf_get_lines(buffer, 0, -1, false)
       local record = _parse_record(new)
+      if _validate_record(record) then
         local command = "knotctl add -z " .. record.zone ..
             " -t " .. record.ttl ..
             " -n " .. record.name ..
@@ -91,6 +101,9 @@ M.add = function(_)
         if choice == 1 then
           log.info(vim.fn.system(command))
         end
+      else
+        log.error("Invalid record")
+      end
     end
   })
 end
@@ -182,6 +195,7 @@ M.update = function(opts)
                 end
               end
               if did_update then
+                if _validate_record(cleannew) and _validate_record(cleanold) then
                   local command = "knotctl update -z " .. cleanold.zone ..
                       " -t " .. cleanold.ttl ..
                       " -n " .. cleanold.name ..
@@ -192,6 +206,9 @@ M.update = function(opts)
                   if choice == 1 then
                     log.info(vim.fn.system(command))
                   end
+                else
+                  log.error("Invalid record")
+                end
               end
             end
           end