| -- |
| -- 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 ngx_re = require("ngx.re") |
| local tab_concat = table.concat |
| local string = string |
| local io_open = io.open |
| local io_close = io.close |
| local ngx = ngx |
| local ipairs = ipairs |
| local pairs = pairs |
| local tonumber = tonumber |
| |
| local _M = {} |
| |
| local tmp = {} |
| function _M.generate_complex_value(data, ctx) |
| core.table.clear(tmp) |
| |
| core.log.info("proxy-cache complex value: ", core.json.delay_encode(data)) |
| for i, value in ipairs(data) do |
| core.log.info("proxy-cache complex value index-", i, ": ", value) |
| |
| if string.byte(value, 1, 1) == string.byte('$') then |
| tmp[i] = ctx.var[string.sub(value, 2)] |
| else |
| tmp[i] = value |
| end |
| end |
| |
| return tab_concat(tmp, "") |
| end |
| |
| |
| -- check whether the request method match the user defined. |
| function _M.match_method(conf, ctx) |
| for _, method in ipairs(conf.cache_method) do |
| if method == ctx.var.request_method then |
| return true |
| end |
| end |
| |
| return false |
| end |
| |
| |
| -- check whether the response status match the user defined. |
| function _M.match_status(conf, ctx) |
| for _, status in ipairs(conf.cache_http_status) do |
| if status == ngx.status then |
| return true |
| end |
| end |
| |
| return false |
| end |
| |
| |
| function _M.file_exists(name) |
| local f = io_open(name, "r") |
| if f ~= nil then |
| io_close(f) |
| return true |
| end |
| return false |
| end |
| |
| |
| function _M.generate_cache_filename(cache_path, cache_levels, cache_key) |
| local md5sum = ngx.md5(cache_key) |
| local levels = ngx_re.split(cache_levels, ":") |
| local filename = "" |
| |
| local index = #md5sum |
| for k, v in pairs(levels) do |
| local length = tonumber(v) |
| index = index - length |
| filename = filename .. md5sum:sub(index+1, index+length) .. "/" |
| end |
| if cache_path:sub(-1) ~= "/" then |
| cache_path = cache_path .. "/" |
| end |
| filename = cache_path .. filename .. md5sum |
| return filename |
| end |
| |
| return _M |