blob: 253a4ac0c3a18518a22c7324613d831677d05a7a [file] [log] [blame]
--
-- 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 ipairs = ipairs
local pcall = pcall
local loadstring = loadstring
local require = require
local type = type
return function(plugin_name, priority)
local core = require("apisix.core")
local lrucache = core.lrucache.new({
type = "plugin",
})
local schema = {
type = "object",
properties = {
phase = {
type = "string",
default = "access",
enum = {"rewrite", "access", "header_filter", "body_filter",
"log", "balancer"}
},
functions = {
type = "array",
items = {type = "string"},
minItems = 1
},
},
required = {"functions"}
}
local _M = {
version = 0.1,
priority = priority,
name = plugin_name,
schema = schema,
}
local function load_funcs(functions)
local funcs = core.table.new(#functions, 0)
local index = 1
for _, func_str in ipairs(functions) do
local _, func = pcall(loadstring(func_str))
funcs[index] = func
index = index + 1
end
return funcs
end
local function call_funcs(phase, conf, ctx)
if phase ~= conf.phase then
return
end
local functions = core.lrucache.plugin_ctx(lrucache, ctx, nil,
load_funcs, conf.functions)
for _, func in ipairs(functions) do
func(conf, ctx)
end
end
function _M.check_schema(conf)
local ok, err = core.schema.check(schema, conf)
if not ok then
return false, err
end
local functions = conf.functions
for _, func_str in ipairs(functions) do
local func, err = loadstring(func_str)
if err then
return false, 'failed to loadstring: ' .. err
end
local ok, ret = pcall(func)
if not ok then
return false, 'pcall error: ' .. ret
end
if type(ret) ~= 'function' then
return false, 'only accept Lua function,'
.. ' the input code type is ' .. type(ret)
end
end
return true
end
function _M.rewrite(conf, ctx)
call_funcs('rewrite', conf, ctx)
end
function _M.access(conf, ctx)
call_funcs('access', conf, ctx)
end
function _M.balancer(conf, ctx)
call_funcs('balancer', conf, ctx)
end
function _M.header_filter(conf, ctx)
call_funcs('header_filter', conf, ctx)
end
function _M.body_filter(conf, ctx)
call_funcs('body_filter', conf, ctx)
end
function _M.log(conf, ctx)
call_funcs('log', conf, ctx)
end
return _M
end