[GitHub] [apisix] kingluo commented on a diff in pull request #8400: feat: add inspect plugin

[GitBox <gi...@apache.org>]

kingluo commented on code in PR #8400:
URL: https://github.com/apache/apisix/pull/8400#discussion_r1043062831


##########
apisix/inspect/dbg.lua:
##########
@@ -0,0 +1,153 @@
+--
+-- Licensed to the Apache Software Foundation (ASF) under one or more
+-- contributor license agreements.  See the NOTICE file distributed with
+-- this work for additional information regarding copyright ownership.
+-- The ASF licenses this file to You under the Apache License, Version 2.0
+-- (the "License"); you may not use this file except in compliance with
+-- the License.  You may obtain a copy of the License at
+--
+--     http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing, software
+-- distributed under the License is distributed on an "AS IS" BASIS,
+-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-- See the License for the specific language governing permissions and
+-- limitations under the License.
+--
+local core = require("apisix.core")
+local string_format = string.format
+local debug = debug
+local ipairs = ipairs
+local pcall = pcall
+local table_insert = table.insert
+local jit = jit
+
+local _M = {}
+
+local hooks = {}
+
+function _M.getname(n)
+    if n.what == "C" then
+        return n.name
+    end
+    local lc = string_format("%s:%d", n.short_src, n.currentline)
+    if n.what ~= "main" and n.namewhat ~= "" then
+        return string_format("%s (%s)", lc, n.name)
+    else
+        return lc
+    end
+end
+
+local function hook(evt, arg)
+    local level = 2
+    local finfo = debug.getinfo(level, "nSlf")
+    local key = finfo.source .. "#" .. arg
+
+    local hooks2 = {}
+    for _, hook in ipairs(hooks) do
+        if key:sub(-#hook.key) == hook.key then
+            local filter_func = hook.filter_func
+            local info = {finfo = finfo, uv = {}, vals = {}}
+
+            -- upvalues
+            local i = 1
+            while true do
+                local name, value = debug.getupvalue(finfo.func, i)
+                if name == nil then break end
+                if name:sub(1, 1) ~= "(" then
+                    info.uv[name] = value
+                end
+                i = i + 1
+            end
+
+            -- local values
+            local i = 1
+            while true do
+                local name, value = debug.getlocal(level, i)
+                if not name then break end
+                if name:sub(1, 1) ~= "(" then
+                    info.vals[name] = value
+                end
+                i = i + 1
+            end
+
+            local r1, r2_or_err = pcall(filter_func, info)
+            if not r1 then
+                core.log.error("inspect: pcall filter_func:", r2_or_err)

Review Comment:
   What do you mean? Here is just error logging, after that, it needs to process the following statements.



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