| -- |
| -- 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 router = require("apisix.utils.router") |
| local core = require("apisix.core") |
| local ipairs = ipairs |
| local type = type |
| local tab_insert = table.insert |
| local loadstring = loadstring |
| local pairs = pairs |
| local cached_version |
| local host_router |
| local only_uri_router |
| |
| |
| local _M = {version = 0.1} |
| |
| |
| local function push_host_router(route, host_routes, only_uri_routes) |
| if type(route) ~= "table" then |
| return |
| 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) |
| return |
| end |
| |
| filter_fun = filter_fun() |
| end |
| |
| local hosts = route.value.hosts or {route.value.host} |
| |
| local radixtree_route = { |
| paths = route.value.uris or route.value.uri, |
| methods = route.value.methods, |
| priority = route.value.priority, |
| 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 |
| } |
| |
| if #hosts == 0 then |
| core.table.insert(only_uri_routes, radixtree_route) |
| return |
| end |
| |
| for i, host in ipairs(hosts) do |
| local host_rev = host:reverse() |
| if not host_routes[host_rev] then |
| host_routes[host_rev] = {radixtree_route} |
| else |
| tab_insert(host_routes[host_rev], radixtree_route) |
| end |
| end |
| end |
| |
| |
| local function empty_func() end |
| |
| |
| local function create_radixtree_router(routes) |
| local host_routes = {} |
| local only_uri_routes = {} |
| host_router = nil |
| |
| for _, route in ipairs(routes or {}) do |
| local status = core.table.try_read_attr(route, "value", "status") |
| -- check the status |
| if not status or status == 1 then |
| push_host_router(route, host_routes, only_uri_routes) |
| end |
| end |
| |
| -- create router: host_router |
| local host_router_routes = {} |
| for host_rev, routes in pairs(host_routes) do |
| local sub_router = router.new(routes) |
| |
| core.table.insert(host_router_routes, { |
| paths = host_rev, |
| filter_fun = function(vars, opts, ...) |
| return sub_router:dispatch(vars.uri, opts, ...) |
| end, |
| handler = empty_func, |
| }) |
| end |
| if #host_router_routes > 0 then |
| host_router = router.new(host_router_routes) |
| end |
| |
| -- create router: only_uri_router |
| only_uri_router = router.new(only_uri_routes) |
| return true |
| end |
| |
| |
| local match_opts = {} |
| function _M.match(api_ctx) |
| local user_routes = _M.user_routes |
| if not cached_version or cached_version ~= user_routes.conf_version then |
| create_radixtree_router(user_routes.values) |
| cached_version = user_routes.conf_version |
| end |
| |
| core.table.clear(match_opts) |
| match_opts.method = api_ctx.var.request_method |
| match_opts.remote_addr = api_ctx.var.remote_addr |
| match_opts.vars = api_ctx.var |
| match_opts.host = api_ctx.var.host |
| match_opts.matched = core.tablepool.fetch("matched_route_record", 0, 4) |
| |
| if host_router then |
| local host_uri = api_ctx.var.host |
| local ok = host_router:dispatch(host_uri:reverse(), match_opts, api_ctx, match_opts) |
| if ok then |
| return true |
| end |
| end |
| |
| local ok = only_uri_router:dispatch(api_ctx.var.uri, match_opts, api_ctx, match_opts) |
| return ok |
| end |
| |
| |
| return _M |