| -- |
| -- 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 require = require |
| local radixtree = require("resty.radixtree") |
| local router = require("apisix.utils.router") |
| local core = require("apisix.core") |
| local expr = require("resty.expr.v1") |
| local plugin_checker = require("apisix.plugin").plugin_checker |
| local ipairs = ipairs |
| local type = type |
| local error = error |
| local loadstring = loadstring |
| |
| |
| local _M = {} |
| |
| |
| function _M.create_radixtree_uri_router(routes, uri_routes, with_parameter) |
| routes = routes or {} |
| |
| core.table.clear(uri_routes) |
| |
| for _, route in ipairs(routes) do |
| if type(route) == "table" then |
| local status = core.table.try_read_attr(route, "value", "status") |
| -- check the status |
| if status and status == 0 then |
| goto CONTINUE |
| end |
| |
| local filter_fun, err |
| if route.value.filter_func then |
| filter_fun, err = loadstring( |
| "return " .. route.value.filter_func, |
| "router#" .. route.value.id) |
| if not filter_fun then |
| core.log.error("failed to load filter function: ", err, |
| " route id: ", route.value.id) |
| goto CONTINUE |
| end |
| |
| filter_fun = filter_fun() |
| end |
| |
| core.log.info("insert uri route: ", |
| core.json.delay_encode(route.value, true)) |
| core.table.insert(uri_routes, { |
| paths = route.value.uris or route.value.uri, |
| methods = route.value.methods, |
| priority = route.value.priority, |
| hosts = route.value.hosts or route.value.host, |
| remote_addrs = route.value.remote_addrs |
| or route.value.remote_addr, |
| vars = route.value.vars, |
| filter_fun = filter_fun, |
| handler = function (api_ctx, match_opts) |
| api_ctx.matched_params = nil |
| api_ctx.matched_route = route |
| api_ctx.curr_req_matched = match_opts.matched |
| end |
| }) |
| |
| ::CONTINUE:: |
| end |
| end |
| |
| core.log.info("route items: ", core.json.delay_encode(uri_routes, true)) |
| |
| if with_parameter then |
| return radixtree.new(uri_routes) |
| else |
| return router.new(uri_routes) |
| end |
| end |
| |
| |
| function _M.match_uri(uri_router, match_opts, api_ctx) |
| core.table.clear(match_opts) |
| match_opts.method = api_ctx.var.request_method |
| match_opts.host = api_ctx.var.host |
| match_opts.remote_addr = api_ctx.var.remote_addr |
| match_opts.vars = api_ctx.var |
| match_opts.matched = core.tablepool.fetch("matched_route_record", 0, 4) |
| |
| local ok = uri_router:dispatch(api_ctx.var.uri, match_opts, api_ctx, match_opts) |
| return ok |
| end |
| |
| |
| -- additional check for synced route configuration, run after schema check |
| local function check_route(route) |
| local ok, err = plugin_checker(route) |
| if not ok then |
| return nil, err |
| end |
| |
| if route.vars then |
| ok, err = expr.new(route.vars) |
| if not ok then |
| return nil, "failed to validate the 'vars' expression: " .. err |
| end |
| end |
| |
| return true |
| end |
| |
| |
| function _M.init_worker(filter) |
| local user_routes, err = core.config.new("/routes", { |
| automatic = true, |
| item_schema = core.schema.route, |
| checker = check_route, |
| filter = filter, |
| }) |
| if not user_routes then |
| error("failed to create etcd instance for fetching /routes : " .. err) |
| end |
| |
| return user_routes |
| end |
| |
| |
| return _M |