apisix/example/my_hook.lua

--
-- 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 apisix = require("apisix")

local old_http_init = apisix.http_init
apisix.http_init = function (...)
    ngx.log(ngx.EMERG, "my hook works in http")
    old_http_init(...)
end

local old_stream_init = apisix.stream_init
apisix.stream_init = function (...)
    ngx.log(ngx.EMERG, "my hook works in stream")
    old_stream_init(...)
end